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*: Regenerate.
2012-08-28 Benjamin Kosnik <bkoz@redhat.com> * doc/html/*: Regenerate. From-SVN: r190770
This commit is contained in:
Benjamin Kosnik
Benjamin Kosnik
parent
8d24c97565
commit
6247d6df14
@ -1,3 +1,7 @@
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2012-08-28 Benjamin Kosnik <bkoz@redhat.com>
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* doc/html/*: Regenerate.
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2012-08-28 Benjamin Kosnik <bkoz@redhat.com>
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PR libstdc++/54102
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@ -1,16 +1,20 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>The GNU C++ Library API Reference</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="index.html" title="The GNU C++ Library"/><link rel="up" href="bk02.html" title=""/><link rel="prev" href="bk02.html" title=""/><link rel="next" href="bk03.html" title=""/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">The GNU C++ Library API Reference</th></tr><tr><td align="left"><a accesskey="p" href="bk02.html">Prev</a> </td><th width="60%" align="center"/><td align="right"> <a accesskey="n" href="bk03.html">Next</a></td></tr></table><hr/></div><div class="article" title="The GNU C++ Library API Reference"><div class="titlepage"><div><div><h2 class="title"><a id="api"/>The GNU C++ Library API Reference</h2></div><div><p class="copyright">Copyright ©
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>The GNU C++ Library API Reference</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="index.html" title="The GNU C++ Library"><link rel="up" href="bk02.html" title=""><link rel="prev" href="bk02.html" title=""><link rel="next" href="bk03.html" title=""></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">The GNU C++ Library API Reference</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk02.html">Prev</a> </td><th width="60%" align="center"></th><td width="20%" align="right"> <a accesskey="n" href="bk03.html">Next</a></td></tr></table><hr></div><div class="article" title="The GNU C++ Library API Reference"><div class="titlepage"><div><div><h2 class="title"><a name="api"></a>The GNU C++ Library API Reference</h2></div><div><p class="copyright">Copyright ©
|
||||
2008
|
||||
,
|
||||
2010
|
||||
|
||||
<a class="link" href="http://www.fsf.org/">FSF
|
||||
<a class="link" href="http://www.fsf.org/" target="_top">FSF
|
||||
</a>
|
||||
</p></div><div><div class="legalnotice" title="Legal Notice"><a id="id436611"/><p>
|
||||
</p></div><div><div class="legalnotice" title="Legal Notice"><a name="id518764"></a><p>
|
||||
<a class="link" href="manual/license.html" title="License">License
|
||||
</a>
|
||||
</p></div></div></div><hr/></div><p>
|
||||
</p></div></div></div><hr></div><p>
|
||||
The GNU C++ library sources have been specially formatted so that
|
||||
with the proper invocation of another tool (Doxygen), a set of
|
||||
indexed reference material can generated from the sources files
|
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@ -20,29 +24,29 @@
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||||
particular include file, looking at inheritance diagrams, etc.
|
||||
</p><p>
|
||||
The API documentation, rendered into HTML, can be viewed online:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-3.4/index.html">for the 3.4 release
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-3.4/index.html" target="_top">for the 3.4 release
|
||||
</a>
|
||||
</p></li><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.1/index.html">for the 4.1 release
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.1/index.html" target="_top">for the 4.1 release
|
||||
</a>
|
||||
</p></li><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.2/index.html">for the 4.2 release
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.2/index.html" target="_top">for the 4.2 release
|
||||
</a>
|
||||
</p></li><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.3/index.html">for the 4.3 release
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.3/index.html" target="_top">for the 4.3 release
|
||||
</a>
|
||||
</p></li><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.4/index.html">for the 4.4 release
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.4/index.html" target="_top">for the 4.4 release
|
||||
</a>
|
||||
</p></li><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-api-4.5/index.html">for the 4.5 release
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-api-4.5/index.html" target="_top">for the 4.5 release
|
||||
</a>
|
||||
</p></li><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-api-4.6/index.html">for the 4.6 release
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-api-4.6/index.html" target="_top">for the 4.6 release
|
||||
</a>
|
||||
</p></li><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/index.html">"the latest collection"
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/index.html" target="_top">"the latest collection"
|
||||
</a>
|
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(For the main development tree; see the date on the first page.)
|
||||
</p></li></ul></div><p>
|
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@ -50,10 +54,10 @@
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gcc.org site in a directory located at
|
||||
<code class="literal"><URL:ftp://gcc.gnu.org/pub/gcc/libstdc++/doxygen/></code>.
|
||||
You will almost certainly need to use one of the
|
||||
<a class="link" href="http://gcc.gnu.org/mirrors.html">mirror sites</a> to download
|
||||
<a class="link" href="http://gcc.gnu.org/mirrors.html" target="_top">mirror sites</a> to download
|
||||
the tarball. After unpacking, simply load libstdc++-html-*/index.html
|
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into a browser.
|
||||
</p><p>
|
||||
In addition, a rendered set of man pages are available in the same
|
||||
location specified above. Start with C++Intro(3).
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk02.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk02.html">Up</a></td><td align="right"> <a accesskey="n" href="bk03.html">Next</a></td></tr><tr><td align="left" valign="top"> </td><td align="center"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
|
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@ -1,3 +1,7 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title/><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="index.html" title="The GNU C++ Library"/><link rel="up" href="index.html" title="The GNU C++ Library"/><link rel="prev" href="manual/backwards.html" title="Backwards Compatibility"/><link rel="next" href="api.html" title="The GNU C++ Library API Reference"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"/></tr><tr><td align="left"><a accesskey="p" href="manual/backwards.html">Prev</a> </td><th width="60%" align="center"> </th><td align="right"> <a accesskey="n" href="api.html">Next</a></td></tr></table><hr/></div><div class="book"><div class="titlepage"><hr/></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="article"><a href="api.html">The GNU C++ Library API Reference</a></span></dt></dl></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="manual/backwards.html">Prev</a> </td><td align="center"> </td><td align="right"> <a accesskey="n" href="api.html">Next</a></td></tr><tr><td align="left" valign="top">Backwards Compatibility </td><td align="center"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top"> The GNU C++ Library API Reference</td></tr></table></div></body></html>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title></title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="index.html" title="The GNU C++ Library"><link rel="up" href="index.html" title="The GNU C++ Library"><link rel="prev" href="manual/backwards.html" title="Backwards Compatibility"><link rel="next" href="api.html" title="The GNU C++ Library API Reference"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="manual/backwards.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="api.html">Next</a></td></tr></table><hr></div><div class="book"><div class="titlepage"><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="article"><a href="api.html">The GNU C++ Library API Reference</a></span></dt></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="manual/backwards.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="api.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Backwards Compatibility </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> The GNU C++ Library API Reference</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,3 +1,7 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title/><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="index.html" title="The GNU C++ Library"/><link rel="up" href="index.html" title="The GNU C++ Library"/><link rel="prev" href="api.html" title="The GNU C++ Library API Reference"/><link rel="next" href="faq.html" title="Frequently Asked Questions"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"/></tr><tr><td align="left"><a accesskey="p" href="api.html">Prev</a> </td><th width="60%" align="center"> </th><td align="right"> <a accesskey="n" href="faq.html">Next</a></td></tr></table><hr/></div><div class="book"><div class="titlepage"><hr/></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="article"><a href="faq.html">Frequently Asked Questions</a></span></dt></dl></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="api.html">Prev</a> </td><td align="center"> </td><td align="right"> <a accesskey="n" href="faq.html">Next</a></td></tr><tr><td align="left" valign="top">The GNU C++ Library API Reference </td><td align="center"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top"> Frequently Asked Questions</td></tr></table></div></body></html>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title></title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="index.html" title="The GNU C++ Library"><link rel="up" href="index.html" title="The GNU C++ Library"><link rel="prev" href="api.html" title="The GNU C++ Library API Reference"><link rel="next" href="faq.html" title="Frequently Asked Questions"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="api.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="faq.html">Next</a></td></tr></table><hr></div><div class="book"><div class="titlepage"><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="article"><a href="faq.html">Frequently Asked Questions</a></span></dt></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="api.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="faq.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">The GNU C++ Library API Reference </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Frequently Asked Questions</td></tr></table></div></body></html>
|
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|
||||
@ -1,10 +1,14 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Frequently Asked Questions</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="index.html" title="The GNU C++ Library"/><link rel="up" href="bk03.html" title=""/><link rel="prev" href="bk03.html" title=""/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Frequently Asked Questions</th></tr><tr><td align="left"><a accesskey="p" href="bk03.html">Prev</a> </td><th width="60%" align="center"/><td align="right"> </td></tr></table><hr/></div><div class="article" title="Frequently Asked Questions"><div class="titlepage"><div><div><h1 class="title"><a id="faq"/>Frequently Asked Questions</h1></div><div><p class="copyright">Copyright ©
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Frequently Asked Questions</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="index.html" title="The GNU C++ Library"><link rel="up" href="bk03.html" title=""><link rel="prev" href="bk03.html" title=""></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Frequently Asked Questions</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk03.html">Prev</a> </td><th width="60%" align="center"></th><td width="20%" align="right"> </td></tr></table><hr></div><div class="article" title="Frequently Asked Questions"><div class="titlepage"><div><div><h1 class="title"><a name="faq"></a>Frequently Asked Questions</h1></div><div><p class="copyright">Copyright ©
|
||||
2008, 2010
|
||||
|
||||
<a class="link" href="http://www.fsf.org">FSF</a>
|
||||
</p></div></div><hr/></div><div class="qandaset" title="Frequently Asked Questions"><a id="id392575"/><dl><dt/><dd><dl><dt>1.1. <a href="faq.html#faq.what">
|
||||
<a class="link" href="http://www.fsf.org" target="_top">FSF</a>
|
||||
</p></div></div><hr></div><div class="qandaset" title="Frequently Asked Questions"><a name="id570718"></a><dl><dt></dt><dd><dl><dt>1.1. <a href="faq.html#faq.what">
|
||||
What is libstdc++?
|
||||
</a></dt><dt>1.2. <a href="faq.html#faq.why">
|
||||
Why should I use libstdc++?
|
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@ -18,7 +22,7 @@
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What happened to the older libg++? I need that!
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</a></dt><dt>1.7. <a href="faq.html#faq.more_questions">
|
||||
What if I have more questions?
|
||||
</a></dt></dl></dd><dt/><dd><dl><dt>2.1. <a href="faq.html#faq.license.what">
|
||||
</a></dt></dl></dd><dt></dt><dd><dl><dt>2.1. <a href="faq.html#faq.license.what">
|
||||
What are the license terms for libstdc++?
|
||||
</a></dt><dt>2.2. <a href="faq.html#faq.license.any_program">
|
||||
So any program which uses libstdc++ falls under the GPL?
|
||||
@ -26,7 +30,7 @@
|
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How is that different from the GNU {Lesser,Library} GPL?
|
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</a></dt><dt>2.4. <a href="faq.html#faq.license.what_restrictions">
|
||||
I see. So, what restrictions are there on programs that use the library?
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||||
</a></dt></dl></dd><dt/><dd><dl><dt>3.1. <a href="faq.html#faq.how_to_install">How do I install libstdc++?
|
||||
</a></dt></dl></dd><dt></dt><dd><dl><dt>3.1. <a href="faq.html#faq.how_to_install">How do I install libstdc++?
|
||||
</a></dt><dt>3.2. <a href="faq.html#faq.how_to_get_sources">How does one get current libstdc++ sources?
|
||||
</a></dt><dt>3.3. <a href="faq.html#faq.how_to_test">How do I know if it works?
|
||||
</a></dt><dt>3.4. <a href="faq.html#faq.how_to_set_paths">How do I insure that the dynamically linked library will be found?
|
||||
@ -34,7 +38,7 @@
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What's libsupc++?
|
||||
</a></dt><dt>3.6. <a href="faq.html#faq.size">
|
||||
This library is HUGE!
|
||||
</a></dt></dl></dd><dt/><dd><dl><dt>4.1. <a href="faq.html#faq.other_compilers">
|
||||
</a></dt></dl></dd><dt></dt><dd><dl><dt>4.1. <a href="faq.html#faq.other_compilers">
|
||||
Can libstdc++ be used with non-GNU compilers?
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||||
</a></dt><dt>4.2. <a href="faq.html#faq.solaris_long_long">
|
||||
No 'long long' type on Solaris?
|
||||
@ -50,13 +54,13 @@
|
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Recent GNU/Linux glibc required?
|
||||
</a></dt><dt>4.8. <a href="faq.html#faq.freebsd_wchar">
|
||||
Can't use wchar_t/wstring on FreeBSD
|
||||
</a></dt></dl></dd><dt/><dd><dl><dt>5.1. <a href="faq.html#faq.what_works">
|
||||
</a></dt></dl></dd><dt></dt><dd><dl><dt>5.1. <a href="faq.html#faq.what_works">
|
||||
What works already?
|
||||
</a></dt><dt>5.2. <a href="faq.html#faq.standard_bugs">
|
||||
Bugs in the ISO C++ language or library specification
|
||||
</a></dt><dt>5.3. <a href="faq.html#faq.compiler_bugs">
|
||||
Bugs in the compiler (gcc/g++) and not libstdc++
|
||||
</a></dt></dl></dd><dt/><dd><dl><dt>6.1. <a href="faq.html#faq.stream_reopening_fails">
|
||||
</a></dt></dl></dd><dt></dt><dd><dl><dt>6.1. <a href="faq.html#faq.stream_reopening_fails">
|
||||
Reopening a stream fails
|
||||
</a></dt><dt>6.2. <a href="faq.html#faq.wefcxx_verbose">
|
||||
-Weffc++ complains too much
|
||||
@ -76,7 +80,7 @@
|
||||
list::size() is O(n)!
|
||||
</a></dt><dt>6.9. <a href="faq.html#faq.easy_to_fix">
|
||||
Aw, that's easy to fix!
|
||||
</a></dt></dl></dd><dt/><dd><dl><dt>7.1. <a href="faq.html#faq.iterator_as_pod">
|
||||
</a></dt></dl></dd><dt></dt><dd><dl><dt>7.1. <a href="faq.html#faq.iterator_as_pod">
|
||||
string::iterator is not char*; vector<T>::iterator is not T*
|
||||
</a></dt><dt>7.2. <a href="faq.html#faq.what_is_next">
|
||||
What's next after libstdc++?
|
||||
@ -91,7 +95,7 @@
|
||||
What's an ABI and why is it so messy?
|
||||
</a></dt><dt>7.8. <a href="faq.html#faq.size_equals_capacity">
|
||||
How do I make std::vector<T>::capacity() == std::vector<T>::size?
|
||||
</a></dt></dl></dd></dl><table border="0" width="100%" summary="Q and A Set"><col align="left" width="1%"/><col/><tbody><tr class="toc"><td align="left" valign="top" colspan="2"><dl><dt>1.1. <a href="faq.html#faq.what">
|
||||
</a></dt></dl></dd></dl><table border="0" width="100%" summary="Q and A Set"><col align="left" width="1%"><col><tbody><tr class="toc"><td align="left" valign="top" colspan="2"><dl><dt>1.1. <a href="faq.html#faq.what">
|
||||
What is libstdc++?
|
||||
</a></dt><dt>1.2. <a href="faq.html#faq.why">
|
||||
Why should I use libstdc++?
|
||||
@ -105,19 +109,19 @@
|
||||
What happened to the older libg++? I need that!
|
||||
</a></dt><dt>1.7. <a href="faq.html#faq.more_questions">
|
||||
What if I have more questions?
|
||||
</a></dt></dl></td></tr><tr class="question" title="1.1."><td align="left" valign="top"><a id="faq.what"/><a id="faq.what.q"/><p><strong>1.1.</strong></p></td><td align="left" valign="top"><p>
|
||||
</a></dt></dl></td></tr><tr class="question" title="1.1."><td align="left" valign="top"><a name="faq.what"></a><a name="faq.what.q"></a><p><b>1.1.</b></p></td><td align="left" valign="top"><p>
|
||||
What is libstdc++?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="faq.what.a"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="faq.what.a"></a></td><td align="left" valign="top"><p>
|
||||
The GNU Standard C++ Library v3 is an ongoing project to
|
||||
implement the ISO 14882 Standard C++ library as described in
|
||||
chapters 17 through 27 and annex D. For those who want to see
|
||||
exactly how far the project has come, or just want the latest
|
||||
bleeding-edge code, the up-to-date source is available over
|
||||
anonymous SVN, and can even be browsed over
|
||||
the <a class="link" href="http://gcc.gnu.org/svn.html">web</a>.
|
||||
</p></td></tr><tr class="question" title="1.2."><td align="left" valign="top"><a id="faq.why"/><a id="q-why"/><p><strong>1.2.</strong></p></td><td align="left" valign="top"><p>
|
||||
the <a class="link" href="http://gcc.gnu.org/svn.html" target="_top">web</a>.
|
||||
</p></td></tr><tr class="question" title="1.2."><td align="left" valign="top"><a name="faq.why"></a><a name="q-why"></a><p><b>1.2.</b></p></td><td align="left" valign="top"><p>
|
||||
Why should I use libstdc++?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-why"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-why"></a></td><td align="left" valign="top"><p>
|
||||
The completion of the ISO C++ standardization gave the C++
|
||||
community a powerful set of reuseable tools in the form of the C++
|
||||
Standard Library. However, all existing C++ implementations are
|
||||
@ -129,9 +133,9 @@
|
||||
(<span class="command"><strong>gcc</strong></span>, <span class="command"><strong>g++</strong></span>, etc) is widely
|
||||
considered to be one of the leading compilers in the world. Its
|
||||
development is overseen by the
|
||||
<a class="link" href="http://gcc.gnu.org/">GCC team</a>. All of
|
||||
<a class="link" href="http://gcc.gnu.org/" target="_top">GCC team</a>. All of
|
||||
the rapid development and near-legendary
|
||||
<a class="link" href="http://gcc.gnu.org/buildstat.html">portability</a>
|
||||
<a class="link" href="http://gcc.gnu.org/buildstat.html" target="_top">portability</a>
|
||||
that are the hallmarks of an open-source project are being
|
||||
applied to libstdc++.
|
||||
</p><p>
|
||||
@ -141,9 +145,9 @@
|
||||
<code class="classname">vector<></code>, iostreams, and algorithms.)
|
||||
Programmers will no longer need to <span class="quote">“<span class="quote">roll their own</span>”</span>
|
||||
nor be worried about platform-specific incompatibilities.
|
||||
</p></td></tr><tr class="question" title="1.3."><td align="left" valign="top"><a id="faq.who"/><a id="q-who"/><p><strong>1.3.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="1.3."><td align="left" valign="top"><a name="faq.who"></a><a name="q-who"></a><p><b>1.3.</b></p></td><td align="left" valign="top"><p>
|
||||
Who's in charge of it?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-who"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-who"></a></td><td align="left" valign="top"><p>
|
||||
The libstdc++ project is contributed to by several developers
|
||||
all over the world, in the same way as GCC or the Linux kernel.
|
||||
Benjamin Kosnik, Gabriel Dos Reis, Phil Edwards, Ulrich Drepper,
|
||||
@ -153,17 +157,17 @@
|
||||
Development and discussion is held on the libstdc++ mailing
|
||||
list. Subscribing to the list, or searching the list
|
||||
archives, is open to everyone. You can read instructions for
|
||||
doing so on the <a class="link" href="http://gcc.gnu.org/libstdc++/">homepage</a>.
|
||||
doing so on the <a class="link" href="http://gcc.gnu.org/libstdc++/" target="_top">homepage</a>.
|
||||
If you have questions, ideas, code, or are just curious, sign up!
|
||||
</p></td></tr><tr class="question" title="1.4."><td align="left" valign="top"><a id="faq.when"/><a id="q-when"/><p><strong>1.4.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="1.4."><td align="left" valign="top"><a name="faq.when"></a><a name="q-when"></a><p><b>1.4.</b></p></td><td align="left" valign="top"><p>
|
||||
When is libstdc++ going to be finished?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-when"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-when"></a></td><td align="left" valign="top"><p>
|
||||
Nathan Myers gave the best of all possible answers, responding to
|
||||
a Usenet article asking this question: <span class="emphasis"><em>Sooner, if you
|
||||
help.</em></span>
|
||||
</p></td></tr><tr class="question" title="1.5."><td align="left" valign="top"><a id="faq.how"/><a id="q-how"/><p><strong>1.5.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="1.5."><td align="left" valign="top"><a name="faq.how"></a><a name="q-how"></a><p><b>1.5.</b></p></td><td align="left" valign="top"><p>
|
||||
How do I contribute to the effort?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-how"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-how"></a></td><td align="left" valign="top"><p>
|
||||
Here is <a class="link" href="manual/appendix_contributing.html" title="Appendix A. Contributing">a page devoted to
|
||||
this topic</a>. Subscribing to the mailing list (see above, or
|
||||
the homepage) is a very good idea if you have something to
|
||||
@ -172,17 +176,17 @@
|
||||
anybody who is willing to help write documentation, for example,
|
||||
or has found a bug in code that we all thought was working and is
|
||||
willing to provide details, is more than welcome!
|
||||
</p></td></tr><tr class="question" title="1.6."><td align="left" valign="top"><a id="faq.whereis_old"/><a id="q-whereis_old"/><p><strong>1.6.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="1.6."><td align="left" valign="top"><a name="faq.whereis_old"></a><a name="q-whereis_old"></a><p><b>1.6.</b></p></td><td align="left" valign="top"><p>
|
||||
What happened to the older libg++? I need that!
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-whereis_old"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-whereis_old"></a></td><td align="left" valign="top"><p>
|
||||
The most recent libg++ README states that libg++ is no longer
|
||||
being actively maintained. It should not be used for new
|
||||
projects, and is only being kicked along to support older code.
|
||||
</p><p>
|
||||
More information in the <a class="link" href="manual/backwards.html" title="Backwards Compatibility">backwards compatibility documentation</a>
|
||||
</p></td></tr><tr class="question" title="1.7."><td align="left" valign="top"><a id="faq.more_questions"/><a id="q-more_questions"/><p><strong>1.7.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="1.7."><td align="left" valign="top"><a name="faq.more_questions"></a><a name="q-more_questions"></a><p><b>1.7.</b></p></td><td align="left" valign="top"><p>
|
||||
What if I have more questions?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-more_questions"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-more_questions"></a></td><td align="left" valign="top"><p>
|
||||
If you have read the README file, and your question remains
|
||||
unanswered, then just ask the mailing list. At present, you do not
|
||||
need to be subscribed to the list to send a message to it. More
|
||||
@ -201,19 +205,19 @@
|
||||
How is that different from the GNU {Lesser,Library} GPL?
|
||||
</a></dt><dt>2.4. <a href="faq.html#faq.license.what_restrictions">
|
||||
I see. So, what restrictions are there on programs that use the library?
|
||||
</a></dt></dl></td></tr><tr class="question" title="2.1."><td align="left" valign="top"><a id="faq.license.what"/><a id="q-license.what"/><p><strong>2.1.</strong></p></td><td align="left" valign="top"><p>
|
||||
</a></dt></dl></td></tr><tr class="question" title="2.1."><td align="left" valign="top"><a name="faq.license.what"></a><a name="q-license.what"></a><p><b>2.1.</b></p></td><td align="left" valign="top"><p>
|
||||
What are the license terms for libstdc++?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-license.what"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-license.what"></a></td><td align="left" valign="top"><p>
|
||||
See <a class="link" href="manual/license.html" title="License">our license description</a>
|
||||
for these and related questions.
|
||||
</p></td></tr><tr class="question" title="2.2."><td align="left" valign="top"><a id="faq.license.any_program"/><a id="q-license.any_program"/><p><strong>2.2.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="2.2."><td align="left" valign="top"><a name="faq.license.any_program"></a><a name="q-license.any_program"></a><p><b>2.2.</b></p></td><td align="left" valign="top"><p>
|
||||
So any program which uses libstdc++ falls under the GPL?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-license.any_program"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-license.any_program"></a></td><td align="left" valign="top"><p>
|
||||
No. The special exception permits use of the library in
|
||||
proprietary applications.
|
||||
</p></td></tr><tr class="question" title="2.3."><td align="left" valign="top"><a id="faq.license.lgpl"/><a id="q-license.lgpl"/><p><strong>2.3.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="2.3."><td align="left" valign="top"><a name="faq.license.lgpl"></a><a name="q-license.lgpl"></a><p><b>2.3.</b></p></td><td align="left" valign="top"><p>
|
||||
How is that different from the GNU {Lesser,Library} GPL?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-license.lgpl"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-license.lgpl"></a></td><td align="left" valign="top"><p>
|
||||
The LGPL requires that users be able to replace the LGPL code with a
|
||||
modified version; this is trivial if the library in question is a C
|
||||
shared library. But there's no way to make that work with C++, where
|
||||
@ -221,9 +225,9 @@
|
||||
are expanded inside the code that uses the library. So to allow people
|
||||
to replace the library code, someone using the library would have to
|
||||
distribute their own source, rendering the LGPL equivalent to the GPL.
|
||||
</p></td></tr><tr class="question" title="2.4."><td align="left" valign="top"><a id="faq.license.what_restrictions"/><a id="q-license.what_restrictions"/><p><strong>2.4.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="2.4."><td align="left" valign="top"><a name="faq.license.what_restrictions"></a><a name="q-license.what_restrictions"></a><p><b>2.4.</b></p></td><td align="left" valign="top"><p>
|
||||
I see. So, what restrictions are there on programs that use the library?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-license.what_restrictions"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-license.what_restrictions"></a></td><td align="left" valign="top"><p>
|
||||
None. We encourage such programs to be released as open source,
|
||||
but we won't punish you or sue you if you choose otherwise.
|
||||
</p></td></tr><tr class="toc"><td align="left" valign="top" colspan="2"><dl><dt>3.1. <a href="faq.html#faq.how_to_install">How do I install libstdc++?
|
||||
@ -234,8 +238,8 @@
|
||||
What's libsupc++?
|
||||
</a></dt><dt>3.6. <a href="faq.html#faq.size">
|
||||
This library is HUGE!
|
||||
</a></dt></dl></td></tr><tr class="question" title="3.1."><td align="left" valign="top"><a id="faq.how_to_install"/><a id="q-how_to_install"/><p><strong>3.1.</strong></p></td><td align="left" valign="top"><p>How do I install libstdc++?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-how_to_install"/></td><td align="left" valign="top"><p>
|
||||
</a></dt></dl></td></tr><tr class="question" title="3.1."><td align="left" valign="top"><a name="faq.how_to_install"></a><a name="q-how_to_install"></a><p><b>3.1.</b></p></td><td align="left" valign="top"><p>How do I install libstdc++?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-how_to_install"></a></td><td align="left" valign="top"><p>
|
||||
Often libstdc++ comes pre-installed as an integral part of many
|
||||
existing GNU/Linux and Unix systems, as well as many embedded
|
||||
development tools. It may be necessary to install extra
|
||||
@ -247,11 +251,11 @@
|
||||
documentation</a> for detailed
|
||||
instructions. You may wish to browse those files ahead
|
||||
of time to get a feel for what's required.
|
||||
</p></td></tr><tr class="question" title="3.2."><td align="left" valign="top"><a id="faq.how_to_get_sources"/><a id="q-how_to_get_sources"/><p><strong>3.2.</strong></p></td><td align="left" valign="top"><p>How does one get current libstdc++ sources?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-how_to_get_sources"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="3.2."><td align="left" valign="top"><a name="faq.how_to_get_sources"></a><a name="q-how_to_get_sources"></a><p><b>3.2.</b></p></td><td align="left" valign="top"><p>How does one get current libstdc++ sources?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-how_to_get_sources"></a></td><td align="left" valign="top"><p>
|
||||
Libstdc++ sources for all official releases can be obtained as
|
||||
part of the GCC sources, available from various sites and
|
||||
mirrors. A full <a class="link" href="http://gcc.gnu.org/mirrors.html">list of
|
||||
mirrors. A full <a class="link" href="http://gcc.gnu.org/mirrors.html" target="_top">list of
|
||||
download sites</a> is provided on the main GCC site.
|
||||
</p><p>
|
||||
Current libstdc++ sources can always be checked out of the main
|
||||
@ -262,7 +266,7 @@
|
||||
<span class="application">Subversion</span>, or <acronym class="acronym">SVN</acronym>, is
|
||||
one of several revision control packages. It was selected for GNU
|
||||
projects because it's free (speech), free (beer), and very high
|
||||
quality. The <a class="link" href="http://subversion.tigris.org"> Subversion
|
||||
quality. The <a class="link" href="http://subversion.tigris.org" target="_top"> Subversion
|
||||
home page</a> has a better description.
|
||||
</p><p>
|
||||
The <span class="quote">“<span class="quote">anonymous client checkout</span>”</span> feature of SVN is
|
||||
@ -270,21 +274,21 @@
|
||||
the latest libstdc++ sources.
|
||||
</p><p>
|
||||
For more information
|
||||
see <a class="link" href="http://gcc.gnu.org/svn.html"><acronym class="acronym">SVN</acronym>
|
||||
see <a class="link" href="http://gcc.gnu.org/svn.html" target="_top"><acronym class="acronym">SVN</acronym>
|
||||
details</a>.
|
||||
</p></td></tr><tr class="question" title="3.3."><td align="left" valign="top"><a id="faq.how_to_test"/><a id="q-how_to_test"/><p><strong>3.3.</strong></p></td><td align="left" valign="top"><p>How do I know if it works?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-how_to_test"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="3.3."><td align="left" valign="top"><a name="faq.how_to_test"></a><a name="q-how_to_test"></a><p><b>3.3.</b></p></td><td align="left" valign="top"><p>How do I know if it works?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-how_to_test"></a></td><td align="left" valign="top"><p>
|
||||
Libstdc++ comes with its own validation testsuite, which includes
|
||||
conformance testing, regression testing, ABI testing, and
|
||||
performance testing. Please consult the
|
||||
<a class="link" href="http://gcc.gnu.org/install/test.html">testing
|
||||
<a class="link" href="http://gcc.gnu.org/install/test.html" target="_top">testing
|
||||
documentation</a> for more details.
|
||||
</p><p>
|
||||
If you find bugs in the testsuite programs themselves, or if you
|
||||
think of a new test program that should be added to the suite,
|
||||
<span class="emphasis"><em>please</em></span> write up your idea and send it to the list!
|
||||
</p></td></tr><tr class="question" title="3.4."><td align="left" valign="top"><a id="faq.how_to_set_paths"/><a id="q-how_to_set_paths"/><p><strong>3.4.</strong></p></td><td align="left" valign="top"><p>How do I insure that the dynamically linked library will be found?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-how_to_set_paths"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="3.4."><td align="left" valign="top"><a name="faq.how_to_set_paths"></a><a name="q-how_to_set_paths"></a><p><b>3.4.</b></p></td><td align="left" valign="top"><p>How do I insure that the dynamically linked library will be found?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-how_to_set_paths"></a></td><td align="left" valign="top"><p>
|
||||
Depending on your platform and library version, the error message might
|
||||
be similar to one of the following:
|
||||
</p><pre class="screen">
|
||||
@ -317,9 +321,9 @@
|
||||
</p><p>
|
||||
Using LD_LIBRARY_PATH is not always the best solution, <a class="link" href="manual/using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic" title="Finding Dynamic or Shared Libraries">Finding Dynamic or Shared
|
||||
Libraries</a> in the manual gives some alternatives.
|
||||
</p></td></tr><tr class="question" title="3.5."><td align="left" valign="top"><a id="faq.what_is_libsupcxx"/><a id="q-what_is_libsupcxx"/><p><strong>3.5.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="3.5."><td align="left" valign="top"><a name="faq.what_is_libsupcxx"></a><a name="q-what_is_libsupcxx"></a><p><b>3.5.</b></p></td><td align="left" valign="top"><p>
|
||||
What's libsupc++?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-what_is_libsupcxx"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-what_is_libsupcxx"></a></td><td align="left" valign="top"><p>
|
||||
If the only functions from <code class="filename">libstdc++.a</code>
|
||||
which you need are language support functions (those listed in
|
||||
<a class="link" href="manual/support.html" title="Chapter 4. Support">clause 18</a> of the
|
||||
@ -334,9 +338,9 @@
|
||||
using anything from the rest of the library, such as IOStreams
|
||||
or vectors, then you'll still need pieces from
|
||||
<code class="filename">libstdc++.a</code>.
|
||||
</p></td></tr><tr class="question" title="3.6."><td align="left" valign="top"><a id="faq.size"/><a id="q-size"/><p><strong>3.6.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="3.6."><td align="left" valign="top"><a name="faq.size"></a><a name="q-size"></a><p><b>3.6.</b></p></td><td align="left" valign="top"><p>
|
||||
This library is HUGE!
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-size"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-size"></a></td><td align="left" valign="top"><p>
|
||||
Usually the size of libraries on disk isn't noticeable. When a
|
||||
link editor (or simply <span class="quote">“<span class="quote">linker</span>”</span>) pulls things from a
|
||||
static archive library, only the necessary object files are copied
|
||||
@ -381,9 +385,9 @@
|
||||
Recent GNU/Linux glibc required?
|
||||
</a></dt><dt>4.8. <a href="faq.html#faq.freebsd_wchar">
|
||||
Can't use wchar_t/wstring on FreeBSD
|
||||
</a></dt></dl></td></tr><tr class="question" title="4.1."><td align="left" valign="top"><a id="faq.other_compilers"/><a id="q-other_compilers"/><p><strong>4.1.</strong></p></td><td align="left" valign="top"><p>
|
||||
</a></dt></dl></td></tr><tr class="question" title="4.1."><td align="left" valign="top"><a name="faq.other_compilers"></a><a name="q-other_compilers"></a><p><b>4.1.</b></p></td><td align="left" valign="top"><p>
|
||||
Can libstdc++ be used with non-GNU compilers?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-other_compilers"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-other_compilers"></a></td><td align="left" valign="top"><p>
|
||||
Perhaps.
|
||||
</p><p>
|
||||
Since the goal of ISO Standardization is for all C++
|
||||
@ -401,9 +405,9 @@
|
||||
been known to work with versions of the EDG C++ compiler, and
|
||||
vendor-specific proprietary C++ compilers such as the Intel ICC
|
||||
C++ compiler.
|
||||
</p></td></tr><tr class="question" title="4.2."><td align="left" valign="top"><a id="faq.solaris_long_long"/><a id="q-solaris_long_long"/><p><strong>4.2.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="4.2."><td align="left" valign="top"><a name="faq.solaris_long_long"></a><a name="q-solaris_long_long"></a><p><b>4.2.</b></p></td><td align="left" valign="top"><p>
|
||||
No 'long long' type on Solaris?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-solaris_long_long"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-solaris_long_long"></a></td><td align="left" valign="top"><p>
|
||||
By default we try to support the C99 <span class="type">long long</span> type.
|
||||
This requires that certain functions from your C library be present.
|
||||
</p><p>
|
||||
@ -413,9 +417,9 @@
|
||||
commonly reported platform affected was Solaris.
|
||||
</p><p>
|
||||
This has been fixed for libstdc++ releases greater than 3.0.3.
|
||||
</p></td></tr><tr class="question" title="4.3."><td align="left" valign="top"><a id="faq.predefined"/><a id="q-predefined"/><p><strong>4.3.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="4.3."><td align="left" valign="top"><a name="faq.predefined"></a><a name="q-predefined"></a><p><b>4.3.</b></p></td><td align="left" valign="top"><p>
|
||||
<code class="constant">_XOPEN_SOURCE</code> and <code class="constant">_GNU_SOURCE</code> are always defined?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-predefined"/></td><td align="left" valign="top"><p>On Solaris, g++ (but not gcc) always defines the preprocessor
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-predefined"></a></td><td align="left" valign="top"><p>On Solaris, g++ (but not gcc) always defines the preprocessor
|
||||
macro <code class="constant">_XOPEN_SOURCE</code>. On GNU/Linux, the same happens
|
||||
with <code class="constant">_GNU_SOURCE</code>. (This is not an exhaustive list;
|
||||
other macros and other platforms are also affected.)
|
||||
@ -439,18 +443,18 @@
|
||||
<span class="command"><strong>g++ -E -dM - < /dev/null"</strong></span> to display
|
||||
a list of predefined macros for any particular installation.
|
||||
</p><p>This has been discussed on the mailing lists
|
||||
<a class="link" href="http://gcc.gnu.org/cgi-bin/htsearch?method=and&format=builtin-long&sort=score&words=_XOPEN_SOURCE+Solaris">quite a bit</a>.
|
||||
<a class="link" href="http://gcc.gnu.org/cgi-bin/htsearch?method=and&format=builtin-long&sort=score&words=_XOPEN_SOURCE+Solaris" target="_top">quite a bit</a>.
|
||||
</p><p>This method is something of a wart. We'd like to find a cleaner
|
||||
solution, but nobody yet has contributed the time.
|
||||
</p></td></tr><tr class="question" title="4.4."><td align="left" valign="top"><a id="faq.darwin_ctype"/><a id="q-darwin_ctype"/><p><strong>4.4.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="4.4."><td align="left" valign="top"><a name="faq.darwin_ctype"></a><a name="q-darwin_ctype"></a><p><b>4.4.</b></p></td><td align="left" valign="top"><p>
|
||||
Mac OS X <code class="filename">ctype.h</code> is broken! How can I fix it?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-darwin_ctype"/></td><td align="left" valign="top"><p>This is a long-standing bug in the OS X support. Fortunately,
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-darwin_ctype"></a></td><td align="left" valign="top"><p>This is a long-standing bug in the OS X support. Fortunately,
|
||||
the patch is quite simple, and well-known.
|
||||
<a class="link" href="http://gcc.gnu.org/ml/gcc/2002-03/msg00817.html"> Here's a
|
||||
<a class="link" href="http://gcc.gnu.org/ml/gcc/2002-03/msg00817.html" target="_top"> Here's a
|
||||
link to the solution</a>.
|
||||
</p></td></tr><tr class="question" title="4.5."><td align="left" valign="top"><a id="faq.threads_i386"/><a id="q-threads_i386"/><p><strong>4.5.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="4.5."><td align="left" valign="top"><a name="faq.threads_i386"></a><a name="q-threads_i386"></a><p><b>4.5.</b></p></td><td align="left" valign="top"><p>
|
||||
Threading is broken on i386?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-threads_i386"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-threads_i386"></a></td><td align="left" valign="top"><p>
|
||||
</p><p>Support for atomic integer operations is/was broken on i386
|
||||
platforms. The assembly code accidentally used opcodes that are
|
||||
only available on the i486 and later. So if you configured GCC
|
||||
@ -458,9 +462,9 @@
|
||||
on an i686, then you would encounter no problems. Only when
|
||||
actually running the code on a i386 will the problem appear.
|
||||
</p><p>This is fixed in 3.2.2.
|
||||
</p></td></tr><tr class="question" title="4.6."><td align="left" valign="top"><a id="faq.atomic_mips"/><a id="q-atomic_mips"/><p><strong>4.6.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="4.6."><td align="left" valign="top"><a name="faq.atomic_mips"></a><a name="q-atomic_mips"></a><p><b>4.6.</b></p></td><td align="left" valign="top"><p>
|
||||
MIPS atomic operations
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-atomic_mips"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-atomic_mips"></a></td><td align="left" valign="top"><p>
|
||||
The atomic locking routines for MIPS targets requires MIPS II
|
||||
and later. A patch went in just after the 3.3 release to
|
||||
make mips* use the generic implementation instead. You can also
|
||||
@ -468,9 +472,9 @@
|
||||
</p><p>
|
||||
The mips*-*-linux* port continues to use the MIPS II routines, and more
|
||||
work in this area is expected.
|
||||
</p></td></tr><tr class="question" title="4.7."><td align="left" valign="top"><a id="faq.linux_glibc"/><a id="q-linux_glibc"/><p><strong>4.7.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="4.7."><td align="left" valign="top"><a name="faq.linux_glibc"></a><a name="q-linux_glibc"></a><p><b>4.7.</b></p></td><td align="left" valign="top"><p>
|
||||
Recent GNU/Linux glibc required?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-linux_glibc"/></td><td align="left" valign="top"><p>When running on GNU/Linux, libstdc++ 3.2.1 (shared library version
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-linux_glibc"></a></td><td align="left" valign="top"><p>When running on GNU/Linux, libstdc++ 3.2.1 (shared library version
|
||||
5.0.1) and later uses localization and formatting code from the system
|
||||
C library (glibc) version 2.2.5 which contains necessary bugfixes.
|
||||
Most GNU/Linux distros make more recent versions available now.
|
||||
@ -479,9 +483,9 @@
|
||||
</p><p>The guideline is simple: the more recent the C++ library, the
|
||||
more recent the C library. (This is also documented in the main
|
||||
GCC installation instructions.)
|
||||
</p></td></tr><tr class="question" title="4.8."><td align="left" valign="top"><a id="faq.freebsd_wchar"/><a id="q-freebsd_wchar"/><p><strong>4.8.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="4.8."><td align="left" valign="top"><a name="faq.freebsd_wchar"></a><a name="q-freebsd_wchar"></a><p><b>4.8.</b></p></td><td align="left" valign="top"><p>
|
||||
Can't use wchar_t/wstring on FreeBSD
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-freebsd_wchar"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-freebsd_wchar"></a></td><td align="left" valign="top"><p>
|
||||
Older versions of FreeBSD's C library do not have sufficient
|
||||
support for wide character functions, and as a result the
|
||||
libstdc++ configury decides that wchar_t support should be
|
||||
@ -498,9 +502,9 @@
|
||||
Bugs in the ISO C++ language or library specification
|
||||
</a></dt><dt>5.3. <a href="faq.html#faq.compiler_bugs">
|
||||
Bugs in the compiler (gcc/g++) and not libstdc++
|
||||
</a></dt></dl></td></tr><tr class="question" title="5.1."><td align="left" valign="top"><a id="faq.what_works"/><a id="q-what_works"/><p><strong>5.1.</strong></p></td><td align="left" valign="top"><p>
|
||||
</a></dt></dl></td></tr><tr class="question" title="5.1."><td align="left" valign="top"><a name="faq.what_works"></a><a name="q-what_works"></a><p><b>5.1.</b></p></td><td align="left" valign="top"><p>
|
||||
What works already?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-what_works"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-what_works"></a></td><td align="left" valign="top"><p>
|
||||
Short answer: Pretty much everything <span class="emphasis"><em>works</em></span>
|
||||
except for some corner cases. Support for localization
|
||||
in <code class="classname">locale</code> may be incomplete on non-GNU
|
||||
@ -512,24 +516,24 @@
|
||||
<a class="link" href="manual/status.html#status.iso.1998" title="C++ 1998/2003">C++98</a>,
|
||||
<a class="link" href="manual/status.html#status.iso.tr1" title="C++ TR1">TR1</a>, and
|
||||
<a class="link" href="manual/status.html#status.iso.2011" title="C++ 2011">C++11</a>.
|
||||
</p></td></tr><tr class="question" title="5.2."><td align="left" valign="top"><a id="faq.standard_bugs"/><a id="q-standard_bugs"/><p><strong>5.2.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="5.2."><td align="left" valign="top"><a name="faq.standard_bugs"></a><a name="q-standard_bugs"></a><p><b>5.2.</b></p></td><td align="left" valign="top"><p>
|
||||
Bugs in the ISO C++ language or library specification
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-standard_bugs"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-standard_bugs"></a></td><td align="left" valign="top"><p>
|
||||
Unfortunately, there are some.
|
||||
</p><p>
|
||||
For those people who are not part of the ISO Library Group
|
||||
(i.e., nearly all of us needing to read this page in the first
|
||||
place), a public list of the library defects is occasionally
|
||||
published on <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/">the WG21
|
||||
published on <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/" target="_top">the WG21
|
||||
website</a>.
|
||||
Some of these issues have resulted in code changes in libstdc++.
|
||||
</p><p>
|
||||
If you think you've discovered a new bug that is not listed,
|
||||
please post a message describing your problem to the author of
|
||||
the library issues list or the Usenet group comp.lang.c++.moderated.
|
||||
</p></td></tr><tr class="question" title="5.3."><td align="left" valign="top"><a id="faq.compiler_bugs"/><a id="q-compiler_bugs"/><p><strong>5.3.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="5.3."><td align="left" valign="top"><a name="faq.compiler_bugs"></a><a name="q-compiler_bugs"></a><p><b>5.3.</b></p></td><td align="left" valign="top"><p>
|
||||
Bugs in the compiler (gcc/g++) and not libstdc++
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-compiler_bugs"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-compiler_bugs"></a></td><td align="left" valign="top"><p>
|
||||
On occasion, the compiler is wrong. Please be advised that this
|
||||
happens much less often than one would think, and avoid jumping to
|
||||
conclusions.
|
||||
@ -540,7 +544,7 @@
|
||||
these lists with terms describing your issue.
|
||||
</p><p>
|
||||
Before reporting a bug, please examine the
|
||||
<a class="link" href="http://gcc.gnu.org/bugs/">bugs database</a> with the
|
||||
<a class="link" href="http://gcc.gnu.org/bugs/" target="_top">bugs database</a> with the
|
||||
category set to <span class="quote">“<span class="quote">g++</span>”</span>.
|
||||
</p></td></tr><tr class="toc"><td align="left" valign="top" colspan="2"><dl><dt>6.1. <a href="faq.html#faq.stream_reopening_fails">
|
||||
Reopening a stream fails
|
||||
@ -562,19 +566,19 @@
|
||||
list::size() is O(n)!
|
||||
</a></dt><dt>6.9. <a href="faq.html#faq.easy_to_fix">
|
||||
Aw, that's easy to fix!
|
||||
</a></dt></dl></td></tr><tr class="question" title="6.1."><td align="left" valign="top"><a id="faq.stream_reopening_fails"/><a id="q-stream_reopening_fails"/><p><strong>6.1.</strong></p></td><td align="left" valign="top"><p>
|
||||
</a></dt></dl></td></tr><tr class="question" title="6.1."><td align="left" valign="top"><a name="faq.stream_reopening_fails"></a><a name="q-stream_reopening_fails"></a><p><b>6.1.</b></p></td><td align="left" valign="top"><p>
|
||||
Reopening a stream fails
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-stream_reopening_fails"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-stream_reopening_fails"></a></td><td align="left" valign="top"><p>
|
||||
One of the most-reported non-bug reports. Executing a sequence like:
|
||||
</p><div class="literallayout"><p><br/>
|
||||
#include <fstream><br/>
|
||||
...<br/>
|
||||
std::fstream fs(<span class="quote">“<span class="quote">a_file</span>”</span>);<br/>
|
||||
// .<br/>
|
||||
// . do things with fs...<br/>
|
||||
// .<br/>
|
||||
fs.close();<br/>
|
||||
fs.open(<span class="quote">“<span class="quote">a_new_file</span>”</span>);<br/>
|
||||
</p><div class="literallayout"><p><br>
|
||||
#include <fstream><br>
|
||||
...<br>
|
||||
std::fstream fs(<span class="quote">“<span class="quote">a_file</span>”</span>);<br>
|
||||
// .<br>
|
||||
// . do things with fs...<br>
|
||||
// .<br>
|
||||
fs.close();<br>
|
||||
fs.open(<span class="quote">“<span class="quote">a_new_file</span>”</span>);<br>
|
||||
</p></div><p>
|
||||
All operations on the re-opened <code class="varname">fs</code> will fail, or at
|
||||
least act very strangely. Yes, they often will, especially if
|
||||
@ -589,9 +593,9 @@
|
||||
<span class="emphasis"><em>Update:</em></span> for GCC 4.0 we implemented the resolution
|
||||
of <a class="link" href="manual/bugs.html" title="Bugs">DR #409</a> and open()
|
||||
now calls <code class="function">clear()</code> on success!
|
||||
</p></td></tr><tr class="question" title="6.2."><td align="left" valign="top"><a id="faq.wefcxx_verbose"/><a id="q-wefcxx_verbose"/><p><strong>6.2.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="6.2."><td align="left" valign="top"><a name="faq.wefcxx_verbose"></a><a name="q-wefcxx_verbose"></a><p><b>6.2.</b></p></td><td align="left" valign="top"><p>
|
||||
-Weffc++ complains too much
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-wefcxx_verbose"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-wefcxx_verbose"></a></td><td align="left" valign="top"><p>
|
||||
Many warnings are emitted when <code class="literal">-Weffc++</code> is used. Making
|
||||
libstdc++ <code class="literal">-Weffc++</code>-clean is not a goal of the project,
|
||||
for a few reasons. Mainly, that option tries to enforce
|
||||
@ -601,21 +605,21 @@
|
||||
We do, however, try to have libstdc++ sources as clean as possible. If
|
||||
you see some simple changes that pacify <code class="literal">-Weffc++</code>
|
||||
without other drawbacks, send us a patch.
|
||||
</p></td></tr><tr class="question" title="6.3."><td align="left" valign="top"><a id="faq.ambiguous_overloads"/><a id="q-ambiguous_overloads"/><p><strong>6.3.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="6.3."><td align="left" valign="top"><a name="faq.ambiguous_overloads"></a><a name="q-ambiguous_overloads"></a><p><b>6.3.</b></p></td><td align="left" valign="top"><p>
|
||||
Ambiguous overloads after including an old-style header
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-ambiguous_overloads"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-ambiguous_overloads"></a></td><td align="left" valign="top"><p>
|
||||
Another problem is the <code class="literal">rel_ops</code> namespace and the template
|
||||
comparison operator functions contained therein. If they become
|
||||
visible in the same namespace as other comparison functions
|
||||
(e.g., <span class="quote">“<span class="quote">using</span>”</span> them and the <iterator> header),
|
||||
then you will suddenly be faced with huge numbers of ambiguity
|
||||
errors. This was discussed on the -v3 list; Nathan Myers
|
||||
<a class="link" href="http://gcc.gnu.org/ml/libstdc++/2001-01/msg00247.html">sums
|
||||
<a class="link" href="http://gcc.gnu.org/ml/libstdc++/2001-01/msg00247.html" target="_top">sums
|
||||
things up here</a>. The collisions with vector/string iterator
|
||||
types have been fixed for 3.1.
|
||||
</p></td></tr><tr class="question" title="6.4."><td align="left" valign="top"><a id="faq.v2_headers"/><a id="q-v2_headers"/><p><strong>6.4.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="6.4."><td align="left" valign="top"><a name="faq.v2_headers"></a><a name="q-v2_headers"></a><p><b>6.4.</b></p></td><td align="left" valign="top"><p>
|
||||
The g++-3 headers are <span class="emphasis"><em>not ours</em></span>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-v2_headers"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-v2_headers"></a></td><td align="left" valign="top"><p>
|
||||
If you are using headers in
|
||||
<code class="filename">${prefix}/include/g++-3</code>, or if the installed
|
||||
library's name looks like <code class="filename">libstdc++-2.10.a</code> or
|
||||
@ -629,10 +633,10 @@
|
||||
'v'?). Starting with version 3.2 the headers are installed in
|
||||
<code class="filename">${prefix}/include/c++/${version}</code> as this prevents
|
||||
headers from previous versions being found by mistake.
|
||||
</p></td></tr><tr class="question" title="6.5."><td align="left" valign="top"><a id="faq.boost_concept_checks"/><a id="q-boost_concept_checks"/><p><strong>6.5.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="6.5."><td align="left" valign="top"><a name="faq.boost_concept_checks"></a><a name="q-boost_concept_checks"></a><p><b>6.5.</b></p></td><td align="left" valign="top"><p>
|
||||
Errors about <span class="emphasis"><em>*Concept</em></span> and
|
||||
<span class="emphasis"><em>constraints</em></span> in the STL
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-boost_concept_checks"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-boost_concept_checks"></a></td><td align="left" valign="top"><p>
|
||||
If you see compilation errors containing messages about
|
||||
<span class="errortext">foo Concept </span>and something to do with a
|
||||
<span class="errortext">constraints</span> member function, then most
|
||||
@ -646,31 +650,31 @@
|
||||
checks, is available in the
|
||||
<a class="link" href="manual/bk01pt02ch05s02.html" title="Concept Checking">Diagnostics</a>.
|
||||
chapter of the manual.
|
||||
</p></td></tr><tr class="question" title="6.6."><td align="left" valign="top"><a id="faq.dlopen_crash"/><a id="q-dlopen_crash"/><p><strong>6.6.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="6.6."><td align="left" valign="top"><a name="faq.dlopen_crash"></a><a name="q-dlopen_crash"></a><p><b>6.6.</b></p></td><td align="left" valign="top"><p>
|
||||
Program crashes when using library code in a
|
||||
dynamically-loaded library
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-dlopen_crash"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-dlopen_crash"></a></td><td align="left" valign="top"><p>
|
||||
If you are using the C++ library across dynamically-loaded
|
||||
objects, make certain that you are passing the correct options
|
||||
when compiling and linking:
|
||||
</p><div class="literallayout"><p><br/>
|
||||
// compile your library components<br/>
|
||||
g++ -fPIC -c a.cc<br/>
|
||||
g++ -fPIC -c b.cc<br/>
|
||||
...<br/>
|
||||
g++ -fPIC -c z.cc<br/>
|
||||
<br/>
|
||||
// create your library<br/>
|
||||
g++ -fPIC -shared -rdynamic -o libfoo.so a.o b.o ... z.o<br/>
|
||||
<br/>
|
||||
// link the executable<br/>
|
||||
g++ -fPIC -rdynamic -o foo ... -L. -lfoo -ldl<br/>
|
||||
</p></div></td></tr><tr class="question" title="6.7."><td align="left" valign="top"><a id="faq.memory_leaks"/><a id="q-memory_leaks"/><p><strong>6.7.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p><div class="literallayout"><p><br>
|
||||
// compile your library components<br>
|
||||
g++ -fPIC -c a.cc<br>
|
||||
g++ -fPIC -c b.cc<br>
|
||||
...<br>
|
||||
g++ -fPIC -c z.cc<br>
|
||||
<br>
|
||||
// create your library<br>
|
||||
g++ -fPIC -shared -rdynamic -o libfoo.so a.o b.o ... z.o<br>
|
||||
<br>
|
||||
// link the executable<br>
|
||||
g++ -fPIC -rdynamic -o foo ... -L. -lfoo -ldl<br>
|
||||
</p></div></td></tr><tr class="question" title="6.7."><td align="left" valign="top"><a name="faq.memory_leaks"></a><a name="q-memory_leaks"></a><p><b>6.7.</b></p></td><td align="left" valign="top"><p>
|
||||
<span class="quote">“<span class="quote">Memory leaks</span>”</span> in containers
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-memory_leaks"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-memory_leaks"></a></td><td align="left" valign="top"><p>
|
||||
A few people have reported that the standard containers appear
|
||||
to leak memory when tested with memory checkers such as
|
||||
<a class="link" href="http://valgrind.org/">valgrind</a>.
|
||||
<a class="link" href="http://valgrind.org/" target="_top">valgrind</a>.
|
||||
Under some configurations the library's allocators keep free memory in a
|
||||
pool for later reuse, rather than returning it to the OS. Although
|
||||
this memory is always reachable by the library and is never
|
||||
@ -678,18 +682,18 @@
|
||||
want to test the library for memory leaks please read
|
||||
<a class="link" href="manual/debug.html#debug.memory" title="Memory Leak Hunting">Tips for memory leak hunting</a>
|
||||
first.
|
||||
</p></td></tr><tr class="question" title="6.8."><td align="left" valign="top"><a id="faq.list_size_on"/><a id="q-list_size_on"/><p><strong>6.8.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="6.8."><td align="left" valign="top"><a name="faq.list_size_on"></a><a name="q-list_size_on"></a><p><b>6.8.</b></p></td><td align="left" valign="top"><p>
|
||||
list::size() is O(n)!
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-list_size_on"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-list_size_on"></a></td><td align="left" valign="top"><p>
|
||||
See
|
||||
the <a class="link" href="manual/containers.html" title="Chapter 9. Containers">Containers</a>
|
||||
chapter.
|
||||
</p></td></tr><tr class="question" title="6.9."><td align="left" valign="top"><a id="faq.easy_to_fix"/><a id="q-easy_to_fix"/><p><strong>6.9.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="6.9."><td align="left" valign="top"><a name="faq.easy_to_fix"></a><a name="q-easy_to_fix"></a><p><b>6.9.</b></p></td><td align="left" valign="top"><p>
|
||||
Aw, that's easy to fix!
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-easy_to_fix"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-easy_to_fix"></a></td><td align="left" valign="top"><p>
|
||||
If you have found a bug in the library and you think you have
|
||||
a working fix, then send it in! The main GCC site has a page
|
||||
on <a class="link" href="http://gcc.gnu.org/contribute.html">submitting
|
||||
on <a class="link" href="http://gcc.gnu.org/contribute.html" target="_top">submitting
|
||||
patches</a> that covers the procedure, but for libstdc++ you
|
||||
should also send the patch to our mailing list in addition to
|
||||
the GCC patches mailing list. The libstdc++
|
||||
@ -717,9 +721,9 @@
|
||||
What's an ABI and why is it so messy?
|
||||
</a></dt><dt>7.8. <a href="faq.html#faq.size_equals_capacity">
|
||||
How do I make std::vector<T>::capacity() == std::vector<T>::size?
|
||||
</a></dt></dl></td></tr><tr class="question" title="7.1."><td align="left" valign="top"><a id="faq.iterator_as_pod"/><a id="faq.iterator_as_pod_q"/><p><strong>7.1.</strong></p></td><td align="left" valign="top"><p>
|
||||
</a></dt></dl></td></tr><tr class="question" title="7.1."><td align="left" valign="top"><a name="faq.iterator_as_pod"></a><a name="faq.iterator_as_pod_q"></a><p><b>7.1.</b></p></td><td align="left" valign="top"><p>
|
||||
string::iterator is not char*; vector<T>::iterator is not T*
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="faq.iterator_as_pod_a"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="faq.iterator_as_pod_a"></a></td><td align="left" valign="top"><p>
|
||||
If you have code that depends on container<T> iterators
|
||||
being implemented as pointer-to-T, your code is broken. It's
|
||||
considered a feature, not a bug, that libstdc++ points this out.
|
||||
@ -736,9 +740,9 @@
|
||||
certain expressions to <code class="varname">&*i</code>. Future revisions
|
||||
of the Standard are expected to bless this usage for
|
||||
vector<> (but not for basic_string<>).
|
||||
</p></td></tr><tr class="question" title="7.2."><td align="left" valign="top"><a id="faq.what_is_next"/><a id="q-what_is_next"/><p><strong>7.2.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="7.2."><td align="left" valign="top"><a name="faq.what_is_next"></a><a name="q-what_is_next"></a><p><b>7.2.</b></p></td><td align="left" valign="top"><p>
|
||||
What's next after libstdc++?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-what_is_next"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-what_is_next"></a></td><td align="left" valign="top"><p>
|
||||
Hopefully, not much. The goal of libstdc++ is to produce a
|
||||
fully-compliant, fully-portable Standard Library. After that,
|
||||
we're mostly done: there won't <span class="emphasis"><em>be</em></span> any
|
||||
@ -747,12 +751,12 @@
|
||||
There is an effort underway to add significant extensions to
|
||||
the standard library specification. The latest version of
|
||||
this effort is described in
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf">
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf" target="_top">
|
||||
The C++ Library Technical Report 1</a>.
|
||||
</p></td></tr><tr class="question" title="7.3."><td align="left" valign="top"><a id="faq.sgi_stl"/><a id="q-sgi_stl"/><p><strong>7.3.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="7.3."><td align="left" valign="top"><a name="faq.sgi_stl"></a><a name="q-sgi_stl"></a><p><b>7.3.</b></p></td><td align="left" valign="top"><p>
|
||||
What about the STL from SGI?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-sgi_stl"/></td><td align="left" valign="top"><p>
|
||||
The <a class="link" href="http://www.sgi.com/tech/stl/">STL from SGI</a>,
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-sgi_stl"></a></td><td align="left" valign="top"><p>
|
||||
The <a class="link" href="http://www.sgi.com/tech/stl/" target="_top">STL from SGI</a>,
|
||||
version 3.3, was the final merge of the STL codebase. The
|
||||
code in libstdc++ contains many fixes and changes, and
|
||||
the SGI code is no longer under active
|
||||
@ -772,24 +776,24 @@
|
||||
</p><p>
|
||||
The FAQ for SGI's STL (one jump off of their main page) is
|
||||
still recommended reading.
|
||||
</p></td></tr><tr class="question" title="7.4."><td align="left" valign="top"><a id="faq.extensions_and_backwards_compat"/><a id="q-extensions_and_backwards_compat"/><p><strong>7.4.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="7.4."><td align="left" valign="top"><a name="faq.extensions_and_backwards_compat"></a><a name="q-extensions_and_backwards_compat"></a><p><b>7.4.</b></p></td><td align="left" valign="top"><p>
|
||||
Extensions and Backward Compatibility
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-extensions_and_backwards_compat"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-extensions_and_backwards_compat"></a></td><td align="left" valign="top"><p>
|
||||
See the <a class="link" href="manual/backwards.html" title="Backwards Compatibility">link</a> on backwards compatibility and <a class="link" href="manual/api.html" title="API Evolution and Deprecation History">link</a> on evolution.
|
||||
</p></td></tr><tr class="question" title="7.5."><td align="left" valign="top"><a id="faq.tr1_support"/><a id="q-tr1_support"/><p><strong>7.5.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="7.5."><td align="left" valign="top"><a name="faq.tr1_support"></a><a name="q-tr1_support"></a><p><b>7.5.</b></p></td><td align="left" valign="top"><p>
|
||||
Does libstdc++ support TR1?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-tr1_support"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-tr1_support"></a></td><td align="left" valign="top"><p>
|
||||
Yes.
|
||||
</p><p>
|
||||
The C++ Standard Library Technical Report adds many new features to
|
||||
the library. The latest version of this effort is described in
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf">
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf" target="_top">
|
||||
Technical Report 1</a>.
|
||||
</p><p>
|
||||
The implementation status of TR1 in libstdc++ can be tracked <a class="link" href="manual/status.html#status.iso.tr1" title="C++ TR1">on the TR1 status
|
||||
page</a>.
|
||||
</p></td></tr><tr class="question" title="7.6."><td align="left" valign="top"><a id="faq.get_iso_cxx"/><a id="q-get_iso_cxx"/><p><strong>7.6.</strong></p></td><td align="left" valign="top"><p>How do I get a copy of the ISO C++ Standard?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-get_iso_cxx"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="7.6."><td align="left" valign="top"><a name="faq.get_iso_cxx"></a><a name="q-get_iso_cxx"></a><p><b>7.6.</b></p></td><td align="left" valign="top"><p>How do I get a copy of the ISO C++ Standard?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-get_iso_cxx"></a></td><td align="left" valign="top"><p>
|
||||
Copies of the full ISO 14882 standard are available on line via
|
||||
the ISO mirror site for committee members. Non-members, or those
|
||||
who have not paid for the privilege of sitting on the committee
|
||||
@ -797,19 +801,19 @@
|
||||
get a copy of the standard from their respective national
|
||||
standards organization. In the USA, this national standards
|
||||
organization is ANSI and their website is
|
||||
right <a class="link" href="http://www.ansi.org">here</a>. (And if
|
||||
right <a class="link" href="http://www.ansi.org" target="_top">here</a>. (And if
|
||||
you've already registered with them, clicking this link will take
|
||||
you to directly to the place where you can
|
||||
<a class="link" href="http://webstore.ansi.org/RecordDetail.aspx?sku=ISO%2FIEC+14882:2003">buy the standard on-line</a>.
|
||||
<a class="link" href="http://webstore.ansi.org/RecordDetail.aspx?sku=ISO%2FIEC+14882:2003" target="_top">buy the standard on-line</a>.
|
||||
</p><p>
|
||||
Who is your country's member body? Visit the
|
||||
<a class="link" href="http://www.iso.ch/">ISO homepage</a> and find out!
|
||||
<a class="link" href="http://www.iso.ch/" target="_top">ISO homepage</a> and find out!
|
||||
</p><p>
|
||||
The 2003 version of the standard (the 1998 version plus TC1) is
|
||||
available in print, ISBN 0-470-84674-7.
|
||||
</p></td></tr><tr class="question" title="7.7."><td align="left" valign="top"><a id="faq.what_is_abi"/><a id="q-what_is_abi"/><p><strong>7.7.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="7.7."><td align="left" valign="top"><a name="faq.what_is_abi"></a><a name="q-what_is_abi"></a><p><b>7.7.</b></p></td><td align="left" valign="top"><p>
|
||||
What's an ABI and why is it so messy?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-what_is_abi"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-what_is_abi"></a></td><td align="left" valign="top"><p>
|
||||
<acronym class="acronym">ABI</acronym> stands for <span class="quote">“<span class="quote">Application Binary
|
||||
Interface</span>”</span>. Conventionally, it refers to a great
|
||||
mass of details about how arguments are arranged on the call
|
||||
@ -855,17 +859,17 @@
|
||||
so they may later be changed. Deciding which, and implementing
|
||||
the decisions, must happen before you can reasonably document a
|
||||
candidate C++ ABI that encompasses the standard library.
|
||||
</p></td></tr><tr class="question" title="7.8."><td align="left" valign="top"><a id="faq.size_equals_capacity"/><a id="q-size_equals_capacity"/><p><strong>7.8.</strong></p></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="question" title="7.8."><td align="left" valign="top"><a name="faq.size_equals_capacity"></a><a name="q-size_equals_capacity"></a><p><b>7.8.</b></p></td><td align="left" valign="top"><p>
|
||||
How do I make std::vector<T>::capacity() == std::vector<T>::size?
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a id="a-size_equals_capacity"/></td><td align="left" valign="top"><p>
|
||||
</p></td></tr><tr class="answer"><td align="left" valign="top"><a name="a-size_equals_capacity"></a></td><td align="left" valign="top"><p>
|
||||
The standard idiom for deallocating a <code class="classname">vector<T></code>'s
|
||||
unused memory is to create a temporary copy of the vector and swap their
|
||||
contents, e.g. for <code class="classname">vector<T> v</code>
|
||||
</p><div class="literallayout"><p><br/>
|
||||
std::vector<T>(v).swap(v);<br/>
|
||||
</p><div class="literallayout"><p><br>
|
||||
std::vector<T>(v).swap(v);<br>
|
||||
</p></div><p>
|
||||
The copy will take O(n) time and the swap is constant time.
|
||||
</p><p>
|
||||
See <a class="link" href="manual/strings.html#strings.string.shrink" title="Shrink to Fit">Shrink-to-fit
|
||||
strings</a> for a similar solution for strings.
|
||||
</p></td></tr></tbody></table></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk03.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk03.html">Up</a></td><td align="right"> </td></tr><tr><td align="left" valign="top"> </td><td align="center"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
</p></td></tr></tbody></table></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk03.html">Up</a></td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
|
||||
File diff suppressed because one or more lines are too long
@ -1,10 +1,30 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>ABI Policy and Guidelines</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , ABI , version , dynamic , shared , compatibility "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"/><link rel="prev" href="test.html" title="Test"/><link rel="next" href="api.html" title="API Evolution and Deprecation History"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">ABI Policy and Guidelines</th></tr><tr><td align="left"><a accesskey="p" href="test.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>ABI Policy and Guidelines</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
ABI
|
||||
,
|
||||
version
|
||||
,
|
||||
dynamic
|
||||
,
|
||||
shared
|
||||
,
|
||||
compatibility
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"><link rel="prev" href="test.html" title="Test"><link rel="next" href="api.html" title="API Evolution and Deprecation History"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">ABI Policy and Guidelines</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="test.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
Porting and Maintenance
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="api.html">Next</a></td></tr></table><hr/></div><div class="section" title="ABI Policy and Guidelines"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.porting.abi"/>ABI Policy and Guidelines</h2></div></div></div><p>
|
||||
</p><div class="section" title="The C++ Interface"><div class="titlepage"><div><div><h3 class="title"><a id="abi.cxx_interface"/>The C++ Interface</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="api.html">Next</a></td></tr></table><hr></div><div class="section" title="ABI Policy and Guidelines"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="appendix.porting.abi"></a>ABI Policy and Guidelines</h2></div></div></div><p>
|
||||
</p><div class="section" title="The C++ Interface"><div class="titlepage"><div><div><h3 class="title"><a name="abi.cxx_interface"></a>The C++ Interface</h3></div></div></div><p>
|
||||
C++ applications often depend on specific language support
|
||||
routines, say for throwing exceptions, or catching exceptions, and
|
||||
perhaps also depend on features in the C++ Standard Library.
|
||||
@ -21,7 +41,7 @@
|
||||
virtual functions, etc. These details are defined as the compiler
|
||||
Application Binary Interface, or ABI. The GNU C++ compiler uses an
|
||||
industry-standard C++ ABI starting with version 3. Details can be
|
||||
found in the <a class="link" href="http://www.codesourcery.com/public/cxx-abi/abi.html">ABI
|
||||
found in the <a class="link" href="http://www.codesourcery.com/public/cxx-abi/abi.html" target="_top">ABI
|
||||
specification</a>.
|
||||
</p><p>
|
||||
The GNU C++ compiler, g++, has a compiler command line option to
|
||||
@ -30,7 +50,7 @@
|
||||
g++ command line options may change the ABI as a side-effect of
|
||||
use. Such flags include <code class="code">-fpack-struct</code> and
|
||||
<code class="code">-fno-exceptions</code>, but include others: see the complete
|
||||
list in the GCC manual under the heading <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code%20Gen%20Options">Options
|
||||
list in the GCC manual under the heading <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code%20Gen%20Options" target="_top">Options
|
||||
for Code Generation Conventions</a>.
|
||||
</p><p>
|
||||
The configure options used when building a specific libstdc++
|
||||
@ -58,10 +78,10 @@ given compiler ABI. In a nutshell:
|
||||
To use a specific version of the C++ ABI, one must use a
|
||||
corresponding GNU C++ toolchain (i.e., g++ and libstdc++) that
|
||||
implements the C++ ABI in question.
|
||||
</p></div><div class="section" title="Versioning"><div class="titlepage"><div><div><h3 class="title"><a id="abi.versioning"/>Versioning</h3></div></div></div><p> The C++ interface has evolved throughout the history of the GNU
|
||||
</p></div><div class="section" title="Versioning"><div class="titlepage"><div><div><h3 class="title"><a name="abi.versioning"></a>Versioning</h3></div></div></div><p> The C++ interface has evolved throughout the history of the GNU
|
||||
C++ toolchain. With each release, various details have been changed so
|
||||
as to give distinct versions to the C++ interface.
|
||||
</p><div class="section" title="Goals"><div class="titlepage"><div><div><h4 class="title"><a id="abi.versioning.goals"/>Goals</h4></div></div></div><p>Extending existing, stable ABIs. Versioning gives subsequent
|
||||
</p><div class="section" title="Goals"><div class="titlepage"><div><div><h4 class="title"><a name="abi.versioning.goals"></a>Goals</h4></div></div></div><p>Extending existing, stable ABIs. Versioning gives subsequent
|
||||
releases of library binaries the ability to add new symbols and add
|
||||
functionality, all the while retaining compatibility with the previous
|
||||
releases in the series. Thus, program binaries linked with the initial
|
||||
@ -75,7 +95,7 @@ binary in a release series (with additional symbols added), substitute
|
||||
in the initial release of the library binary, and remain link
|
||||
compatible.
|
||||
</p><p>Allows multiple, incompatible ABIs to coexist at the same time.
|
||||
</p></div><div class="section" title="History"><div class="titlepage"><div><div><h4 class="title"><a id="abi.versioning.history"/>History</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="History"><div class="titlepage"><div><div><h4 class="title"><a name="abi.versioning.history"></a>History</h4></div></div></div><p>
|
||||
How can this complexity be managed? What does C++ versioning mean?
|
||||
Because library and compiler changes often make binaries compiled
|
||||
with one version of the GNU tools incompatible with binaries
|
||||
@ -84,12 +104,12 @@ compatible.
|
||||
easier.
|
||||
</p><p>
|
||||
The following techniques are used:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>Release versioning on the libgcc_s.so binary. </p><p>This is implemented via file names and the ELF
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>Release versioning on the libgcc_s.so binary. </p><p>This is implemented via file names and the ELF
|
||||
<code class="constant">DT_SONAME</code> mechanism (at least on ELF
|
||||
systems). It is versioned as follows:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.x: libgcc_s.so.1</p></li><li class="listitem"><p>GCC 4.x: libgcc_s.so.1</p></li></ul></div><p>For m68k-linux the versions differ as follows: </p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.4, GCC 4.x: libgcc_s.so.1
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.x: libgcc_s.so.1</p></li><li class="listitem"><p>GCC 4.x: libgcc_s.so.1</p></li></ul></div><p>For m68k-linux the versions differ as follows: </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.4, GCC 4.x: libgcc_s.so.1
|
||||
when configuring <code class="code">--with-sjlj-exceptions</code>, or
|
||||
libgcc_s.so.2 </p></li></ul></div><p>For hppa-linux the versions differ as follows: </p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.4, GCC 4.[0-1]: either libgcc_s.so.1
|
||||
libgcc_s.so.2 </p></li></ul></div><p>For hppa-linux the versions differ as follows: </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.4, GCC 4.[0-1]: either libgcc_s.so.1
|
||||
when configuring <code class="code">--with-sjlj-exceptions</code>, or
|
||||
libgcc_s.so.2 </p></li><li class="listitem"><p>GCC 4.[2-7]: either libgcc_s.so.3 when configuring
|
||||
<code class="code">--with-sjlj-exceptions</code>) or libgcc_s.so.4
|
||||
@ -97,7 +117,7 @@ compatible.
|
||||
definitions, where the version definition is the maximum for a
|
||||
particular release. Labels are cumulative. If a particular release
|
||||
is not listed, it has the same version labels as the preceding
|
||||
release.</p><p>This corresponds to the mapfile: gcc/libgcc-std.ver</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.0.0: GCC_3.0</p></li><li class="listitem"><p>GCC 3.3.0: GCC_3.3</p></li><li class="listitem"><p>GCC 3.3.1: GCC_3.3.1</p></li><li class="listitem"><p>GCC 3.3.2: GCC_3.3.2</p></li><li class="listitem"><p>GCC 3.3.4: GCC_3.3.4</p></li><li class="listitem"><p>GCC 3.4.0: GCC_3.4</p></li><li class="listitem"><p>GCC 3.4.2: GCC_3.4.2</p></li><li class="listitem"><p>GCC 3.4.4: GCC_3.4.4</p></li><li class="listitem"><p>GCC 4.0.0: GCC_4.0.0</p></li><li class="listitem"><p>GCC 4.1.0: GCC_4.1.0</p></li><li class="listitem"><p>GCC 4.2.0: GCC_4.2.0</p></li><li class="listitem"><p>GCC 4.3.0: GCC_4.3.0</p></li><li class="listitem"><p>GCC 4.4.0: GCC_4.4.0</p></li><li class="listitem"><p>GCC 4.5.0: GCC_4.5.0</p></li><li class="listitem"><p>GCC 4.6.0: GCC_4.6.0</p></li><li class="listitem"><p>GCC 4.7.0: GCC_4.7.0</p></li></ul></div></li><li class="listitem"><p>
|
||||
release.</p><p>This corresponds to the mapfile: gcc/libgcc-std.ver</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.0.0: GCC_3.0</p></li><li class="listitem"><p>GCC 3.3.0: GCC_3.3</p></li><li class="listitem"><p>GCC 3.3.1: GCC_3.3.1</p></li><li class="listitem"><p>GCC 3.3.2: GCC_3.3.2</p></li><li class="listitem"><p>GCC 3.3.4: GCC_3.3.4</p></li><li class="listitem"><p>GCC 3.4.0: GCC_3.4</p></li><li class="listitem"><p>GCC 3.4.2: GCC_3.4.2</p></li><li class="listitem"><p>GCC 3.4.4: GCC_3.4.4</p></li><li class="listitem"><p>GCC 4.0.0: GCC_4.0.0</p></li><li class="listitem"><p>GCC 4.1.0: GCC_4.1.0</p></li><li class="listitem"><p>GCC 4.2.0: GCC_4.2.0</p></li><li class="listitem"><p>GCC 4.3.0: GCC_4.3.0</p></li><li class="listitem"><p>GCC 4.4.0: GCC_4.4.0</p></li><li class="listitem"><p>GCC 4.5.0: GCC_4.5.0</p></li><li class="listitem"><p>GCC 4.6.0: GCC_4.6.0</p></li><li class="listitem"><p>GCC 4.7.0: GCC_4.7.0</p></li></ul></div></li><li class="listitem"><p>
|
||||
Release versioning on the libstdc++.so binary, implemented in
|
||||
the same way as the libgcc_s.so binary above. Listed is the
|
||||
filename: <code class="constant">DT_SONAME</code> can be deduced from
|
||||
@ -112,13 +132,13 @@ compatible.
|
||||
has the same filename and <code class="constant">DT_SONAME</code> as the
|
||||
preceding release.
|
||||
</p><p>It is versioned as follows:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.0.0: libstdc++.so.3.0.0</p></li><li class="listitem"><p>GCC 3.0.1: libstdc++.so.3.0.1</p></li><li class="listitem"><p>GCC 3.0.2: libstdc++.so.3.0.2</p></li><li class="listitem"><p>GCC 3.0.3: libstdc++.so.3.0.2 (See Note 1)</p></li><li class="listitem"><p>GCC 3.0.4: libstdc++.so.3.0.4</p></li><li class="listitem"><p>GCC 3.1.0: libstdc++.so.4.0.0 <span class="emphasis"><em>(Incompatible with previous)</em></span></p></li><li class="listitem"><p>GCC 3.1.1: libstdc++.so.4.0.1</p></li><li class="listitem"><p>GCC 3.2.0: libstdc++.so.5.0.0 <span class="emphasis"><em>(Incompatible with previous)</em></span></p></li><li class="listitem"><p>GCC 3.2.1: libstdc++.so.5.0.1</p></li><li class="listitem"><p>GCC 3.2.2: libstdc++.so.5.0.2</p></li><li class="listitem"><p>GCC 3.2.3: libstdc++.so.5.0.3 (See Note 2)</p></li><li class="listitem"><p>GCC 3.3.0: libstdc++.so.5.0.4</p></li><li class="listitem"><p>GCC 3.3.1: libstdc++.so.5.0.5</p></li><li class="listitem"><p>GCC 3.4.0: libstdc++.so.6.0.0 <span class="emphasis"><em>(Incompatible with previous)</em></span></p></li><li class="listitem"><p>GCC 3.4.1: libstdc++.so.6.0.1</p></li><li class="listitem"><p>GCC 3.4.2: libstdc++.so.6.0.2</p></li><li class="listitem"><p>GCC 3.4.3: libstdc++.so.6.0.3</p></li><li class="listitem"><p>GCC 4.0.0: libstdc++.so.6.0.4</p></li><li class="listitem"><p>GCC 4.0.1: libstdc++.so.6.0.5</p></li><li class="listitem"><p>GCC 4.0.2: libstdc++.so.6.0.6</p></li><li class="listitem"><p>GCC 4.0.3: libstdc++.so.6.0.7</p></li><li class="listitem"><p>GCC 4.1.0: libstdc++.so.6.0.7</p></li><li class="listitem"><p>GCC 4.1.1: libstdc++.so.6.0.8</p></li><li class="listitem"><p>GCC 4.2.0: libstdc++.so.6.0.9</p></li><li class="listitem"><p>GCC 4.2.1: libstdc++.so.6.0.9 (See Note 3)</p></li><li class="listitem"><p>GCC 4.2.2: libstdc++.so.6.0.9</p></li><li class="listitem"><p>GCC 4.3.0: libstdc++.so.6.0.10</p></li><li class="listitem"><p>GCC 4.4.0: libstdc++.so.6.0.11</p></li><li class="listitem"><p>GCC 4.4.1: libstdc++.so.6.0.12</p></li><li class="listitem"><p>GCC 4.4.2: libstdc++.so.6.0.13</p></li><li class="listitem"><p>GCC 4.5.0: libstdc++.so.6.0.14</p></li><li class="listitem"><p>GCC 4.6.0: libstdc++.so.6.0.15</p></li><li class="listitem"><p>GCC 4.6.1: libstdc++.so.6.0.16</p></li></ul></div><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.0.0: libstdc++.so.3.0.0</p></li><li class="listitem"><p>GCC 3.0.1: libstdc++.so.3.0.1</p></li><li class="listitem"><p>GCC 3.0.2: libstdc++.so.3.0.2</p></li><li class="listitem"><p>GCC 3.0.3: libstdc++.so.3.0.2 (See Note 1)</p></li><li class="listitem"><p>GCC 3.0.4: libstdc++.so.3.0.4</p></li><li class="listitem"><p>GCC 3.1.0: libstdc++.so.4.0.0 <span class="emphasis"><em>(Incompatible with previous)</em></span></p></li><li class="listitem"><p>GCC 3.1.1: libstdc++.so.4.0.1</p></li><li class="listitem"><p>GCC 3.2.0: libstdc++.so.5.0.0 <span class="emphasis"><em>(Incompatible with previous)</em></span></p></li><li class="listitem"><p>GCC 3.2.1: libstdc++.so.5.0.1</p></li><li class="listitem"><p>GCC 3.2.2: libstdc++.so.5.0.2</p></li><li class="listitem"><p>GCC 3.2.3: libstdc++.so.5.0.3 (See Note 2)</p></li><li class="listitem"><p>GCC 3.3.0: libstdc++.so.5.0.4</p></li><li class="listitem"><p>GCC 3.3.1: libstdc++.so.5.0.5</p></li><li class="listitem"><p>GCC 3.4.0: libstdc++.so.6.0.0 <span class="emphasis"><em>(Incompatible with previous)</em></span></p></li><li class="listitem"><p>GCC 3.4.1: libstdc++.so.6.0.1</p></li><li class="listitem"><p>GCC 3.4.2: libstdc++.so.6.0.2</p></li><li class="listitem"><p>GCC 3.4.3: libstdc++.so.6.0.3</p></li><li class="listitem"><p>GCC 4.0.0: libstdc++.so.6.0.4</p></li><li class="listitem"><p>GCC 4.0.1: libstdc++.so.6.0.5</p></li><li class="listitem"><p>GCC 4.0.2: libstdc++.so.6.0.6</p></li><li class="listitem"><p>GCC 4.0.3: libstdc++.so.6.0.7</p></li><li class="listitem"><p>GCC 4.1.0: libstdc++.so.6.0.7</p></li><li class="listitem"><p>GCC 4.1.1: libstdc++.so.6.0.8</p></li><li class="listitem"><p>GCC 4.2.0: libstdc++.so.6.0.9</p></li><li class="listitem"><p>GCC 4.2.1: libstdc++.so.6.0.9 (See Note 3)</p></li><li class="listitem"><p>GCC 4.2.2: libstdc++.so.6.0.9</p></li><li class="listitem"><p>GCC 4.3.0: libstdc++.so.6.0.10</p></li><li class="listitem"><p>GCC 4.4.0: libstdc++.so.6.0.11</p></li><li class="listitem"><p>GCC 4.4.1: libstdc++.so.6.0.12</p></li><li class="listitem"><p>GCC 4.4.2: libstdc++.so.6.0.13</p></li><li class="listitem"><p>GCC 4.5.0: libstdc++.so.6.0.14</p></li><li class="listitem"><p>GCC 4.6.0: libstdc++.so.6.0.15</p></li><li class="listitem"><p>GCC 4.6.1: libstdc++.so.6.0.16</p></li></ul></div><p>
|
||||
Note 1: Error should be libstdc++.so.3.0.3.
|
||||
</p><p>
|
||||
Note 2: Not strictly required.
|
||||
</p><p>
|
||||
Note 3: This release (but not previous or subsequent) has one
|
||||
known incompatibility, see <a class="link" href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33678">33678</a>
|
||||
known incompatibility, see <a class="link" href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33678" target="_top">33678</a>
|
||||
in the GCC bug database.
|
||||
</p></li><li class="listitem"><p>Symbol versioning on the libstdc++.so binary.</p><p>mapfile: libstdc++-v3/config/abi/pre/gnu.ver</p><p>It is versioned with the following labels and version
|
||||
definitions, where the version definition is the maximum for a
|
||||
@ -130,7 +150,7 @@ compatible.
|
||||
GLIBCPP_3.2 for symbols that were introduced in the GCC 3.2.0
|
||||
release.) If a particular release is not listed, it has the same
|
||||
version labels as the preceding release.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.0.0: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.0.1: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.0.2: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.0.3: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.0.4: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.1.0: GLIBCPP_3.1, CXXABI_1</p></li><li class="listitem"><p>GCC 3.1.1: GLIBCPP_3.1, CXXABI_1</p></li><li class="listitem"><p>GCC 3.2.0: GLIBCPP_3.2, CXXABI_1.2</p></li><li class="listitem"><p>GCC 3.2.1: GLIBCPP_3.2.1, CXXABI_1.2</p></li><li class="listitem"><p>GCC 3.2.2: GLIBCPP_3.2.2, CXXABI_1.2</p></li><li class="listitem"><p>GCC 3.2.3: GLIBCPP_3.2.2, CXXABI_1.2</p></li><li class="listitem"><p>GCC 3.3.0: GLIBCPP_3.2.2, CXXABI_1.2.1</p></li><li class="listitem"><p>GCC 3.3.1: GLIBCPP_3.2.3, CXXABI_1.2.1</p></li><li class="listitem"><p>GCC 3.3.2: GLIBCPP_3.2.3, CXXABI_1.2.1</p></li><li class="listitem"><p>GCC 3.3.3: GLIBCPP_3.2.3, CXXABI_1.2.1</p></li><li class="listitem"><p>GCC 3.4.0: GLIBCXX_3.4, CXXABI_1.3</p></li><li class="listitem"><p>GCC 3.4.1: GLIBCXX_3.4.1, CXXABI_1.3</p></li><li class="listitem"><p>GCC 3.4.2: GLIBCXX_3.4.2</p></li><li class="listitem"><p>GCC 3.4.3: GLIBCXX_3.4.3</p></li><li class="listitem"><p>GCC 4.0.0: GLIBCXX_3.4.4, CXXABI_1.3.1</p></li><li class="listitem"><p>GCC 4.0.1: GLIBCXX_3.4.5</p></li><li class="listitem"><p>GCC 4.0.2: GLIBCXX_3.4.6</p></li><li class="listitem"><p>GCC 4.0.3: GLIBCXX_3.4.7</p></li><li class="listitem"><p>GCC 4.1.1: GLIBCXX_3.4.8</p></li><li class="listitem"><p>GCC 4.2.0: GLIBCXX_3.4.9</p></li><li class="listitem"><p>GCC 4.3.0: GLIBCXX_3.4.10, CXXABI_1.3.2</p></li><li class="listitem"><p>GCC 4.4.0: GLIBCXX_3.4.11, CXXABI_1.3.3</p></li><li class="listitem"><p>GCC 4.4.1: GLIBCXX_3.4.12, CXXABI_1.3.3</p></li><li class="listitem"><p>GCC 4.4.2: GLIBCXX_3.4.13, CXXABI_1.3.3</p></li><li class="listitem"><p>GCC 4.5.0: GLIBCXX_3.4.14, CXXABI_1.3.4</p></li><li class="listitem"><p>GCC 4.6.0: GLIBCXX_3.4.15, CXXABI_1.3.5</p></li><li class="listitem"><p>GCC 4.6.1: GLIBCXX_3.4.16, CXXABI_1.3.5</p></li></ul></div></li><li class="listitem"><p>Incremental bumping of a compiler pre-defined macro,
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.0.0: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.0.1: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.0.2: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.0.3: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.0.4: (Error, not versioned)</p></li><li class="listitem"><p>GCC 3.1.0: GLIBCPP_3.1, CXXABI_1</p></li><li class="listitem"><p>GCC 3.1.1: GLIBCPP_3.1, CXXABI_1</p></li><li class="listitem"><p>GCC 3.2.0: GLIBCPP_3.2, CXXABI_1.2</p></li><li class="listitem"><p>GCC 3.2.1: GLIBCPP_3.2.1, CXXABI_1.2</p></li><li class="listitem"><p>GCC 3.2.2: GLIBCPP_3.2.2, CXXABI_1.2</p></li><li class="listitem"><p>GCC 3.2.3: GLIBCPP_3.2.2, CXXABI_1.2</p></li><li class="listitem"><p>GCC 3.3.0: GLIBCPP_3.2.2, CXXABI_1.2.1</p></li><li class="listitem"><p>GCC 3.3.1: GLIBCPP_3.2.3, CXXABI_1.2.1</p></li><li class="listitem"><p>GCC 3.3.2: GLIBCPP_3.2.3, CXXABI_1.2.1</p></li><li class="listitem"><p>GCC 3.3.3: GLIBCPP_3.2.3, CXXABI_1.2.1</p></li><li class="listitem"><p>GCC 3.4.0: GLIBCXX_3.4, CXXABI_1.3</p></li><li class="listitem"><p>GCC 3.4.1: GLIBCXX_3.4.1, CXXABI_1.3</p></li><li class="listitem"><p>GCC 3.4.2: GLIBCXX_3.4.2</p></li><li class="listitem"><p>GCC 3.4.3: GLIBCXX_3.4.3</p></li><li class="listitem"><p>GCC 4.0.0: GLIBCXX_3.4.4, CXXABI_1.3.1</p></li><li class="listitem"><p>GCC 4.0.1: GLIBCXX_3.4.5</p></li><li class="listitem"><p>GCC 4.0.2: GLIBCXX_3.4.6</p></li><li class="listitem"><p>GCC 4.0.3: GLIBCXX_3.4.7</p></li><li class="listitem"><p>GCC 4.1.1: GLIBCXX_3.4.8</p></li><li class="listitem"><p>GCC 4.2.0: GLIBCXX_3.4.9</p></li><li class="listitem"><p>GCC 4.3.0: GLIBCXX_3.4.10, CXXABI_1.3.2</p></li><li class="listitem"><p>GCC 4.4.0: GLIBCXX_3.4.11, CXXABI_1.3.3</p></li><li class="listitem"><p>GCC 4.4.1: GLIBCXX_3.4.12, CXXABI_1.3.3</p></li><li class="listitem"><p>GCC 4.4.2: GLIBCXX_3.4.13, CXXABI_1.3.3</p></li><li class="listitem"><p>GCC 4.5.0: GLIBCXX_3.4.14, CXXABI_1.3.4</p></li><li class="listitem"><p>GCC 4.6.0: GLIBCXX_3.4.15, CXXABI_1.3.5</p></li><li class="listitem"><p>GCC 4.6.1: GLIBCXX_3.4.16, CXXABI_1.3.5</p></li></ul></div></li><li class="listitem"><p>Incremental bumping of a compiler pre-defined macro,
|
||||
__GXX_ABI_VERSION. This macro is defined as the version of the
|
||||
compiler v3 ABI, with g++ 3.0 being version 100. This macro will
|
||||
be automatically defined whenever g++ is used (the curious can
|
||||
@ -142,11 +162,11 @@ compatible.
|
||||
'-fabi-version' command line option.
|
||||
</p><p>
|
||||
It is versioned as follows, where 'n' is given by '-fabi-version=n':
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.0: 100</p></li><li class="listitem"><p>GCC 3.1: 100 (Error, should be 101)</p></li><li class="listitem"><p>GCC 3.2: 102</p></li><li class="listitem"><p>GCC 3.3: 102</p></li><li class="listitem"><p>GCC 3.4, GCC 4.x: 102 (when n=1)</p></li><li class="listitem"><p>GCC 3.4, GCC 4.x: 1000 + n (when n>1) </p></li><li class="listitem"><p>GCC 3.4, GCC 4.x: 999999 (when n=0)</p></li></ul></div><p/></li><li class="listitem"><p>Changes to the default compiler option for
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.0: 100</p></li><li class="listitem"><p>GCC 3.1: 100 (Error, should be 101)</p></li><li class="listitem"><p>GCC 3.2: 102</p></li><li class="listitem"><p>GCC 3.3: 102</p></li><li class="listitem"><p>GCC 3.4, GCC 4.x: 102 (when n=1)</p></li><li class="listitem"><p>GCC 3.4, GCC 4.x: 1000 + n (when n>1) </p></li><li class="listitem"><p>GCC 3.4, GCC 4.x: 999999 (when n=0)</p></li></ul></div><p></p></li><li class="listitem"><p>Changes to the default compiler option for
|
||||
<code class="code">-fabi-version</code>.
|
||||
</p><p>
|
||||
It is versioned as follows:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.0: (Error, not versioned) </p></li><li class="listitem"><p>GCC 3.1: (Error, not versioned) </p></li><li class="listitem"><p>GCC 3.2: <code class="code">-fabi-version=1</code></p></li><li class="listitem"><p>GCC 3.3: <code class="code">-fabi-version=1</code></p></li><li class="listitem"><p>GCC 3.4, GCC 4.x: <code class="code">-fabi-version=2</code> <span class="emphasis"><em>(Incompatible with previous)</em></span></p></li></ul></div><p/></li><li class="listitem"><p>Incremental bumping of a library pre-defined macro. For releases
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.0: (Error, not versioned) </p></li><li class="listitem"><p>GCC 3.1: (Error, not versioned) </p></li><li class="listitem"><p>GCC 3.2: <code class="code">-fabi-version=1</code></p></li><li class="listitem"><p>GCC 3.3: <code class="code">-fabi-version=1</code></p></li><li class="listitem"><p>GCC 3.4, GCC 4.x: <code class="code">-fabi-version=2</code> <span class="emphasis"><em>(Incompatible with previous)</em></span></p></li></ul></div><p></p></li><li class="listitem"><p>Incremental bumping of a library pre-defined macro. For releases
|
||||
before 3.4.0, the macro is __GLIBCPP__. For later releases, it's
|
||||
__GLIBCXX__. (The libstdc++ project generously changed from CPP to
|
||||
CXX throughout its source to allow the "C" pre-processor the CPP
|
||||
@ -159,7 +179,7 @@ compatible.
|
||||
the same value as gcc/DATESTAMP.)
|
||||
</p><p>
|
||||
It is versioned as follows:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.0.0: 20010615</p></li><li class="listitem"><p>GCC 3.0.1: 20010819</p></li><li class="listitem"><p>GCC 3.0.2: 20011023</p></li><li class="listitem"><p>GCC 3.0.3: 20011220</p></li><li class="listitem"><p>GCC 3.0.4: 20020220</p></li><li class="listitem"><p>GCC 3.1.0: 20020514</p></li><li class="listitem"><p>GCC 3.1.1: 20020725</p></li><li class="listitem"><p>GCC 3.2.0: 20020814</p></li><li class="listitem"><p>GCC 3.2.1: 20021119</p></li><li class="listitem"><p>GCC 3.2.2: 20030205</p></li><li class="listitem"><p>GCC 3.2.3: 20030422</p></li><li class="listitem"><p>GCC 3.3.0: 20030513</p></li><li class="listitem"><p>GCC 3.3.1: 20030804</p></li><li class="listitem"><p>GCC 3.3.2: 20031016</p></li><li class="listitem"><p>GCC 3.3.3: 20040214</p></li><li class="listitem"><p>GCC 3.4.0: 20040419</p></li><li class="listitem"><p>GCC 3.4.1: 20040701</p></li><li class="listitem"><p>GCC 3.4.2: 20040906</p></li><li class="listitem"><p>GCC 3.4.3: 20041105</p></li><li class="listitem"><p>GCC 3.4.4: 20050519</p></li><li class="listitem"><p>GCC 3.4.5: 20051201</p></li><li class="listitem"><p>GCC 3.4.6: 20060306</p></li><li class="listitem"><p>GCC 4.0.0: 20050421</p></li><li class="listitem"><p>GCC 4.0.1: 20050707</p></li><li class="listitem"><p>GCC 4.0.2: 20050921</p></li><li class="listitem"><p>GCC 4.0.3: 20060309</p></li><li class="listitem"><p>GCC 4.1.0: 20060228</p></li><li class="listitem"><p>GCC 4.1.1: 20060524</p></li><li class="listitem"><p>GCC 4.1.2: 20070214</p></li><li class="listitem"><p>GCC 4.2.0: 20070514</p></li><li class="listitem"><p>GCC 4.2.1: 20070719</p></li><li class="listitem"><p>GCC 4.2.2: 20071007</p></li><li class="listitem"><p>GCC 4.2.3: 20080201</p></li><li class="listitem"><p>GCC 4.2.4: 20080519</p></li><li class="listitem"><p>GCC 4.3.0: 20080306</p></li><li class="listitem"><p>GCC 4.3.1: 20080606</p></li><li class="listitem"><p>GCC 4.3.2: 20080827</p></li><li class="listitem"><p>GCC 4.3.3: 20090124</p></li><li class="listitem"><p>GCC 4.3.4: 20090804</p></li><li class="listitem"><p>GCC 4.3.5: 20100522</p></li><li class="listitem"><p>GCC 4.3.6: 20110627</p></li><li class="listitem"><p>GCC 4.4.0: 20090421</p></li><li class="listitem"><p>GCC 4.4.1: 20090722</p></li><li class="listitem"><p>GCC 4.4.2: 20091015</p></li><li class="listitem"><p>GCC 4.4.3: 20100121</p></li><li class="listitem"><p>GCC 4.4.4: 20100429</p></li><li class="listitem"><p>GCC 4.4.5: 20101001</p></li><li class="listitem"><p>GCC 4.4.6: 20110416</p></li><li class="listitem"><p>GCC 4.5.0: 20100414</p></li><li class="listitem"><p>GCC 4.5.1: 20100731</p></li><li class="listitem"><p>GCC 4.5.2: 20101216</p></li><li class="listitem"><p>GCC 4.5.3: 20110428</p></li><li class="listitem"><p>GCC 4.6.0: 20110325</p></li><li class="listitem"><p>GCC 4.6.1: 20110627</p></li><li class="listitem"><p>GCC 4.6.2: 20111026</p></li></ul></div><p/></li><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.0.0: 20010615</p></li><li class="listitem"><p>GCC 3.0.1: 20010819</p></li><li class="listitem"><p>GCC 3.0.2: 20011023</p></li><li class="listitem"><p>GCC 3.0.3: 20011220</p></li><li class="listitem"><p>GCC 3.0.4: 20020220</p></li><li class="listitem"><p>GCC 3.1.0: 20020514</p></li><li class="listitem"><p>GCC 3.1.1: 20020725</p></li><li class="listitem"><p>GCC 3.2.0: 20020814</p></li><li class="listitem"><p>GCC 3.2.1: 20021119</p></li><li class="listitem"><p>GCC 3.2.2: 20030205</p></li><li class="listitem"><p>GCC 3.2.3: 20030422</p></li><li class="listitem"><p>GCC 3.3.0: 20030513</p></li><li class="listitem"><p>GCC 3.3.1: 20030804</p></li><li class="listitem"><p>GCC 3.3.2: 20031016</p></li><li class="listitem"><p>GCC 3.3.3: 20040214</p></li><li class="listitem"><p>GCC 3.4.0: 20040419</p></li><li class="listitem"><p>GCC 3.4.1: 20040701</p></li><li class="listitem"><p>GCC 3.4.2: 20040906</p></li><li class="listitem"><p>GCC 3.4.3: 20041105</p></li><li class="listitem"><p>GCC 3.4.4: 20050519</p></li><li class="listitem"><p>GCC 3.4.5: 20051201</p></li><li class="listitem"><p>GCC 3.4.6: 20060306</p></li><li class="listitem"><p>GCC 4.0.0: 20050421</p></li><li class="listitem"><p>GCC 4.0.1: 20050707</p></li><li class="listitem"><p>GCC 4.0.2: 20050921</p></li><li class="listitem"><p>GCC 4.0.3: 20060309</p></li><li class="listitem"><p>GCC 4.1.0: 20060228</p></li><li class="listitem"><p>GCC 4.1.1: 20060524</p></li><li class="listitem"><p>GCC 4.1.2: 20070214</p></li><li class="listitem"><p>GCC 4.2.0: 20070514</p></li><li class="listitem"><p>GCC 4.2.1: 20070719</p></li><li class="listitem"><p>GCC 4.2.2: 20071007</p></li><li class="listitem"><p>GCC 4.2.3: 20080201</p></li><li class="listitem"><p>GCC 4.2.4: 20080519</p></li><li class="listitem"><p>GCC 4.3.0: 20080306</p></li><li class="listitem"><p>GCC 4.3.1: 20080606</p></li><li class="listitem"><p>GCC 4.3.2: 20080827</p></li><li class="listitem"><p>GCC 4.3.3: 20090124</p></li><li class="listitem"><p>GCC 4.3.4: 20090804</p></li><li class="listitem"><p>GCC 4.3.5: 20100522</p></li><li class="listitem"><p>GCC 4.3.6: 20110627</p></li><li class="listitem"><p>GCC 4.4.0: 20090421</p></li><li class="listitem"><p>GCC 4.4.1: 20090722</p></li><li class="listitem"><p>GCC 4.4.2: 20091015</p></li><li class="listitem"><p>GCC 4.4.3: 20100121</p></li><li class="listitem"><p>GCC 4.4.4: 20100429</p></li><li class="listitem"><p>GCC 4.4.5: 20101001</p></li><li class="listitem"><p>GCC 4.4.6: 20110416</p></li><li class="listitem"><p>GCC 4.5.0: 20100414</p></li><li class="listitem"><p>GCC 4.5.1: 20100731</p></li><li class="listitem"><p>GCC 4.5.2: 20101216</p></li><li class="listitem"><p>GCC 4.5.3: 20110428</p></li><li class="listitem"><p>GCC 4.6.0: 20110325</p></li><li class="listitem"><p>GCC 4.6.1: 20110627</p></li><li class="listitem"><p>GCC 4.6.2: 20111026</p></li></ul></div><p></p></li><li class="listitem"><p>
|
||||
Incremental bumping of a library pre-defined macro,
|
||||
_GLIBCPP_VERSION. This macro is defined as the released version of
|
||||
the library, as a string literal. This is only implemented in
|
||||
@ -172,7 +192,7 @@ compatible.
|
||||
of config.h.
|
||||
</p><p>
|
||||
It is versioned as follows:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.0.0: "3.0.0"</p></li><li class="listitem"><p>GCC 3.0.1: "3.0.0" (Error, should be "3.0.1")</p></li><li class="listitem"><p>GCC 3.0.2: "3.0.0" (Error, should be "3.0.2")</p></li><li class="listitem"><p>GCC 3.0.3: "3.0.0" (Error, should be "3.0.3")</p></li><li class="listitem"><p>GCC 3.0.4: "3.0.0" (Error, should be "3.0.4")</p></li><li class="listitem"><p>GCC 3.1.0: "3.1.0"</p></li><li class="listitem"><p>GCC 3.1.1: "3.1.1"</p></li><li class="listitem"><p>GCC 3.2.0: "3.2"</p></li><li class="listitem"><p>GCC 3.2.1: "3.2.1"</p></li><li class="listitem"><p>GCC 3.2.2: "3.2.2"</p></li><li class="listitem"><p>GCC 3.2.3: "3.2.3"</p></li><li class="listitem"><p>GCC 3.3.0: "3.3"</p></li><li class="listitem"><p>GCC 3.3.1: "3.3.1"</p></li><li class="listitem"><p>GCC 3.3.2: "3.3.2"</p></li><li class="listitem"><p>GCC 3.3.3: "3.3.3"</p></li><li class="listitem"><p>GCC 3.4: "version-unused"</p></li><li class="listitem"><p>GCC 4.x: "version-unused"</p></li></ul></div><p/></li><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.0.0: "3.0.0"</p></li><li class="listitem"><p>GCC 3.0.1: "3.0.0" (Error, should be "3.0.1")</p></li><li class="listitem"><p>GCC 3.0.2: "3.0.0" (Error, should be "3.0.2")</p></li><li class="listitem"><p>GCC 3.0.3: "3.0.0" (Error, should be "3.0.3")</p></li><li class="listitem"><p>GCC 3.0.4: "3.0.0" (Error, should be "3.0.4")</p></li><li class="listitem"><p>GCC 3.1.0: "3.1.0"</p></li><li class="listitem"><p>GCC 3.1.1: "3.1.1"</p></li><li class="listitem"><p>GCC 3.2.0: "3.2"</p></li><li class="listitem"><p>GCC 3.2.1: "3.2.1"</p></li><li class="listitem"><p>GCC 3.2.2: "3.2.2"</p></li><li class="listitem"><p>GCC 3.2.3: "3.2.3"</p></li><li class="listitem"><p>GCC 3.3.0: "3.3"</p></li><li class="listitem"><p>GCC 3.3.1: "3.3.1"</p></li><li class="listitem"><p>GCC 3.3.2: "3.3.2"</p></li><li class="listitem"><p>GCC 3.3.3: "3.3.3"</p></li><li class="listitem"><p>GCC 3.4: "version-unused"</p></li><li class="listitem"><p>GCC 4.x: "version-unused"</p></li></ul></div><p></p></li><li class="listitem"><p>
|
||||
Matching each specific C++ compiler release to a specific set of
|
||||
C++ include files. This is only implemented in GCC 3.1.1 releases
|
||||
and higher.
|
||||
@ -185,13 +205,13 @@ compatible.
|
||||
file's macro GLIBCXX_CONFIGURE (GLIBCPP_CONFIGURE before GCC 3.4.0).
|
||||
</p><p>
|
||||
C++ includes are versioned as follows:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>GCC 3.0.0: include/g++-v3</p></li><li class="listitem"><p>GCC 3.0.1: include/g++-v3</p></li><li class="listitem"><p>GCC 3.0.2: include/g++-v3</p></li><li class="listitem"><p>GCC 3.0.3: include/g++-v3</p></li><li class="listitem"><p>GCC 3.0.4: include/g++-v3</p></li><li class="listitem"><p>GCC 3.1.0: include/g++-v3</p></li><li class="listitem"><p>GCC 3.1.1: include/c++/3.1.1</p></li><li class="listitem"><p>GCC 3.2.0: include/c++/3.2</p></li><li class="listitem"><p>GCC 3.2.1: include/c++/3.2.1</p></li><li class="listitem"><p>GCC 3.2.2: include/c++/3.2.2</p></li><li class="listitem"><p>GCC 3.2.3: include/c++/3.2.3</p></li><li class="listitem"><p>GCC 3.3.0: include/c++/3.3</p></li><li class="listitem"><p>GCC 3.3.1: include/c++/3.3.1</p></li><li class="listitem"><p>GCC 3.3.2: include/c++/3.3.2</p></li><li class="listitem"><p>GCC 3.3.3: include/c++/3.3.3</p></li><li class="listitem"><p>GCC 3.4.x: include/c++/3.4.x</p></li><li class="listitem"><p>GCC 4.x.y: include/c++/4.x.y</p></li></ul></div><p/></li></ol></div><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>GCC 3.0.0: include/g++-v3</p></li><li class="listitem"><p>GCC 3.0.1: include/g++-v3</p></li><li class="listitem"><p>GCC 3.0.2: include/g++-v3</p></li><li class="listitem"><p>GCC 3.0.3: include/g++-v3</p></li><li class="listitem"><p>GCC 3.0.4: include/g++-v3</p></li><li class="listitem"><p>GCC 3.1.0: include/g++-v3</p></li><li class="listitem"><p>GCC 3.1.1: include/c++/3.1.1</p></li><li class="listitem"><p>GCC 3.2.0: include/c++/3.2</p></li><li class="listitem"><p>GCC 3.2.1: include/c++/3.2.1</p></li><li class="listitem"><p>GCC 3.2.2: include/c++/3.2.2</p></li><li class="listitem"><p>GCC 3.2.3: include/c++/3.2.3</p></li><li class="listitem"><p>GCC 3.3.0: include/c++/3.3</p></li><li class="listitem"><p>GCC 3.3.1: include/c++/3.3.1</p></li><li class="listitem"><p>GCC 3.3.2: include/c++/3.3.2</p></li><li class="listitem"><p>GCC 3.3.3: include/c++/3.3.3</p></li><li class="listitem"><p>GCC 3.4.x: include/c++/3.4.x</p></li><li class="listitem"><p>GCC 4.x.y: include/c++/4.x.y</p></li></ul></div><p></p></li></ol></div><p>
|
||||
Taken together, these techniques can accurately specify interface
|
||||
and implementation changes in the GNU C++ tools themselves. Used
|
||||
properly, they allow both the GNU C++ tools implementation, and
|
||||
programs using them, an evolving yet controlled development that
|
||||
maintains backward compatibility.
|
||||
</p></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h4 class="title"><a id="abi.versioning.prereq"/>Prerequisites</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h4 class="title"><a name="abi.versioning.prereq"></a>Prerequisites</h4></div></div></div><p>
|
||||
Minimum environment that supports a versioned ABI: A supported
|
||||
dynamic linker, a GNU linker of sufficient vintage to understand
|
||||
demangled C++ name globbing (ld) or the Sun linker, a shared
|
||||
@ -206,7 +226,7 @@ compatible.
|
||||
Most modern GNU/Linux and BSD versions, particularly ones using
|
||||
GCC 3.1 and later, will meet the
|
||||
requirements above, as does Solaris 2.5 and up.
|
||||
</p></div><div class="section" title="Configuring"><div class="titlepage"><div><div><h4 class="title"><a id="abi.versioning.config"/>Configuring</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Configuring"><div class="titlepage"><div><div><h4 class="title"><a name="abi.versioning.config"></a>Configuring</h4></div></div></div><p>
|
||||
It turns out that most of the configure options that change
|
||||
default behavior will impact the mangled names of exported
|
||||
symbols, and thus impact versioning and compatibility.
|
||||
@ -224,7 +244,7 @@ compatible.
|
||||
attempts to make sure that all the requirement for symbol
|
||||
versioning are in place. For more information, please consult
|
||||
acinclude.m4.
|
||||
</p></div><div class="section" title="Checking Active"><div class="titlepage"><div><div><h4 class="title"><a id="abi.versioning.active"/>Checking Active</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Checking Active"><div class="titlepage"><div><div><h4 class="title"><a name="abi.versioning.active"></a>Checking Active</h4></div></div></div><p>
|
||||
When the GNU C++ library is being built with symbol versioning
|
||||
on, you should see the following at configure time for
|
||||
libstdc++:
|
||||
@ -272,16 +292,16 @@ On Solaris 2, you can use <code class="code">pvs -r</code> instead:
|
||||
libc.so.1 (SUNWprivate_1.1, SYSVABI_1.3);
|
||||
</pre><p>
|
||||
<code class="code">ldd -v</code> works too, but is very verbose.
|
||||
</p></div></div><div class="section" title="Allowed Changes"><div class="titlepage"><div><div><h3 class="title"><a id="abi.changes_allowed"/>Allowed Changes</h3></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Allowed Changes"><div class="titlepage"><div><div><h3 class="title"><a name="abi.changes_allowed"></a>Allowed Changes</h3></div></div></div><p>
|
||||
The following will cause the library minor version number to
|
||||
increase, say from "libstdc++.so.3.0.4" to "libstdc++.so.3.0.5".
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>Adding an exported global or static data member</p></li><li class="listitem"><p>Adding an exported function, static or non-virtual member function</p></li><li class="listitem"><p>Adding an exported symbol or symbols by additional instantiations</p></li></ol></div><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>Adding an exported global or static data member</p></li><li class="listitem"><p>Adding an exported function, static or non-virtual member function</p></li><li class="listitem"><p>Adding an exported symbol or symbols by additional instantiations</p></li></ol></div><p>
|
||||
Other allowed changes are possible.
|
||||
</p></div><div class="section" title="Prohibited Changes"><div class="titlepage"><div><div><h3 class="title"><a id="abi.changes_no"/>Prohibited Changes</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Prohibited Changes"><div class="titlepage"><div><div><h3 class="title"><a name="abi.changes_no"></a>Prohibited Changes</h3></div></div></div><p>
|
||||
The following non-exhaustive list will cause the library major version
|
||||
number to increase, say from "libstdc++.so.3.0.4" to
|
||||
"libstdc++.so.4.0.0".
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>Changes in the gcc/g++ compiler ABI</p></li><li class="listitem"><p>Changing size of an exported symbol</p></li><li class="listitem"><p>Changing alignment of an exported symbol</p></li><li class="listitem"><p>Changing the layout of an exported symbol</p></li><li class="listitem"><p>Changing mangling on an exported symbol</p></li><li class="listitem"><p>Deleting an exported symbol</p></li><li class="listitem"><p>Changing the inheritance properties of a type by adding or removing
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>Changes in the gcc/g++ compiler ABI</p></li><li class="listitem"><p>Changing size of an exported symbol</p></li><li class="listitem"><p>Changing alignment of an exported symbol</p></li><li class="listitem"><p>Changing the layout of an exported symbol</p></li><li class="listitem"><p>Changing mangling on an exported symbol</p></li><li class="listitem"><p>Deleting an exported symbol</p></li><li class="listitem"><p>Changing the inheritance properties of a type by adding or removing
|
||||
base classes</p></li><li class="listitem"><p>
|
||||
Changing the size, alignment, or layout of types
|
||||
specified in the C++ standard. These may not necessarily be
|
||||
@ -293,10 +313,10 @@ class that would otherwise have implicit versions. This will change
|
||||
the way the compiler deals with this class in by-value return
|
||||
statements or parameters: instead of passing instances of this
|
||||
class in registers, the compiler will be forced to use memory. See the
|
||||
section on <a class="link" href="http://www.codesourcery.com/public/cxx-abi/abi.html#calls">Function
|
||||
section on <a class="link" href="http://www.codesourcery.com/public/cxx-abi/abi.html#calls" target="_top">Function
|
||||
Calling Conventions and APIs</a>
|
||||
of the C++ ABI documentation for further details.
|
||||
</p></li></ol></div></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h3 class="title"><a id="abi.impl"/>Implementation</h3></div></div></div><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p></li></ol></div></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h3 class="title"><a name="abi.impl"></a>Implementation</h3></div></div></div><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Separation of interface and implementation
|
||||
</p><p>
|
||||
This is accomplished by two techniques that separate the API from
|
||||
@ -344,7 +364,7 @@ exceptional symbols are allowed to be visible.</p></dd><dt><span class="term"><c
|
||||
<code class="code">CXXABI</code>, select items are allowed to be visible.</p></dd></dl></div><p>
|
||||
</p></li><li class="listitem"><p>Freezing the API</p><p>Disallowed changes, as above, are not made on a stable release
|
||||
branch. Enforcement tends to be less strict with GNU extensions that
|
||||
standard includes.</p></li></ol></div></div><div class="section" title="Testing"><div class="titlepage"><div><div><h3 class="title"><a id="abi.testing"/>Testing</h3></div></div></div><div class="section" title="Single ABI Testing"><div class="titlepage"><div><div><h4 class="title"><a id="abi.testing.single"/>Single ABI Testing</h4></div></div></div><p>
|
||||
standard includes.</p></li></ol></div></div><div class="section" title="Testing"><div class="titlepage"><div><div><h3 class="title"><a name="abi.testing"></a>Testing</h3></div></div></div><div class="section" title="Single ABI Testing"><div class="titlepage"><div><div><h4 class="title"><a name="abi.testing.single"></a>Single ABI Testing</h4></div></div></div><p>
|
||||
Testing for GNU C++ ABI changes is composed of two distinct
|
||||
areas: testing the C++ compiler (g++) for compiler changes, and
|
||||
testing the C++ library (libstdc++) for library changes.
|
||||
@ -410,7 +430,7 @@ and other detailed data is not displayed with this flag.
|
||||
</p><p>
|
||||
Perhaps there are other C++ ABI checkers. If so, please notify
|
||||
us. We'd like to know about them!
|
||||
</p></div><div class="section" title="Multiple ABI Testing"><div class="titlepage"><div><div><h4 class="title"><a id="abi.testing.multi"/>Multiple ABI Testing</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Multiple ABI Testing"><div class="titlepage"><div><div><h4 class="title"><a name="abi.testing.multi"></a>Multiple ABI Testing</h4></div></div></div><p>
|
||||
A "C" application, dynamically linked to two shared libraries, liba,
|
||||
libb. The dependent library liba is a C++ shared library compiled with
|
||||
GCC 3.3, and uses io, exceptions, locale, etc. The dependent library
|
||||
@ -473,7 +493,7 @@ gcc test.c -g -O2 -L. -lone -ltwo /usr/lib/libstdc++.so.5 /usr/lib/libstdc++.so.
|
||||
This resulting binary, when executed, will be able to safely use
|
||||
code from both liba, and the dependent libstdc++.so.6, and libb,
|
||||
with the dependent libstdc++.so.5.
|
||||
</p></div></div><div class="section" title="Outstanding Issues"><div class="titlepage"><div><div><h3 class="title"><a id="abi.issues"/>Outstanding Issues</h3></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Outstanding Issues"><div class="titlepage"><div><div><h3 class="title"><a name="abi.issues"></a>Outstanding Issues</h3></div></div></div><p>
|
||||
Some features in the C++ language make versioning especially
|
||||
difficult. In particular, compiler generated constructs such as
|
||||
implicit instantiations for templates, typeinfo information, and
|
||||
@ -483,54 +503,54 @@ gcc test.c -g -O2 -L. -lone -ltwo /usr/lib/libstdc++.so.5 /usr/lib/libstdc++.so.
|
||||
</p><p>
|
||||
For more background on this issue, see these bugzilla entries:
|
||||
</p><p>
|
||||
<a class="link" href="http://gcc.gnu.org/PR24660">24660: versioning weak symbols in libstdc++</a>
|
||||
<a class="link" href="http://gcc.gnu.org/PR24660" target="_top">24660: versioning weak symbols in libstdc++</a>
|
||||
</p><p>
|
||||
<a class="link" href="http://gcc.gnu.org/PR19664">19664: libstdc++ headers should have pop/push of the visibility around the declarations</a>
|
||||
</p></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h3 class="title"><a id="abi.biblio"/>Bibliography</h3></div></div></div><div class="biblioentry" title="ABIcheck"><a id="biblio.abicheck"/><p>[biblio.abicheck] <span class="title"><em>
|
||||
<a class="link" href="http://abicheck.sourceforge.net">
|
||||
<a class="link" href="http://gcc.gnu.org/PR19664" target="_top">19664: libstdc++ headers should have pop/push of the visibility around the declarations</a>
|
||||
</p></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h3 class="title"><a name="abi.biblio"></a>Bibliography</h3></div></div></div><div class="biblioentry" title="ABIcheck"><a name="biblio.abicheck"></a><p>[biblio.abicheck] <span class="title"><i>
|
||||
<a class="link" href="http://abicheck.sourceforge.net" target="_top">
|
||||
ABIcheck
|
||||
</a>
|
||||
</em>. </span></p></div><div class="biblioentry" title="C++ ABI Summary"><a id="biblio.cxxabi"/><p>[biblio.cxxabi] <span class="title"><em>
|
||||
<a class="link" href="http://www.codesourcery.com/public/cxx-abi">
|
||||
</i>. </span></p></div><div class="biblioentry" title="C++ ABI Summary"><a name="biblio.cxxabi"></a><p>[biblio.cxxabi] <span class="title"><i>
|
||||
<a class="link" href="http://www.codesourcery.com/public/cxx-abi" target="_top">
|
||||
C++ ABI Summary
|
||||
</a>
|
||||
</em>. </span></p></div><div class="biblioentry" title="Intel Compilers for Linux Compatibility with the GNU Compilers"><a id="id570957"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.intel.com/cd/software/products/asmo-na/eng/284736.htm">
|
||||
</i>. </span></p></div><div class="biblioentry" title="Intel Compilers for Linux Compatibility with the GNU Compilers"><a name="id684275"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.intel.com/cd/software/products/asmo-na/eng/284736.htm" target="_top">
|
||||
Intel Compilers for Linux Compatibility with the GNU Compilers
|
||||
</a>
|
||||
</em>. </span></p></div><div class="biblioentry" title="Linker and Libraries Guide (document 819-0690)"><a id="id570973"/><p><span class="title"><em>
|
||||
<a class="link" href="http://download.oracle.com/docs/cd/E19963-01/html/819-0690/index.html">
|
||||
</i>. </span></p></div><div class="biblioentry" title="Linker and Libraries Guide (document 819-0690)"><a name="id684291"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://download.oracle.com/docs/cd/E19963-01/html/819-0690/index.html" target="_top">
|
||||
Linker and Libraries Guide (document 819-0690)
|
||||
</a>
|
||||
</em>. </span></p></div><div class="biblioentry" title="Sun Studio 11: C++ Migration Guide (document 819-3689)"><a id="id570988"/><p><span class="title"><em>
|
||||
<a class="link" href="http://download.oracle.com/docs/cd/E19422-01/819-3689/index.html">
|
||||
</i>. </span></p></div><div class="biblioentry" title="Sun Studio 11: C++ Migration Guide (document 819-3689)"><a name="id684306"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://download.oracle.com/docs/cd/E19422-01/819-3689/index.html" target="_top">
|
||||
Sun Studio 11: C++ Migration Guide (document 819-3689)
|
||||
</a>
|
||||
</em>. </span></p></div><div class="biblioentry" title="How to Write Shared Libraries"><a id="id571003"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.akkadia.org/drepper/dsohowto.pdf">
|
||||
</i>. </span></p></div><div class="biblioentry" title="How to Write Shared Libraries"><a name="id684322"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.akkadia.org/drepper/dsohowto.pdf" target="_top">
|
||||
How to Write Shared Libraries
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span></p></div><div class="biblioentry" title="C++ ABI for the ARM Architecture"><a id="id571032"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.arm.com/miscPDFs/8033.pdf">
|
||||
</i>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span></p></div><div class="biblioentry" title="C++ ABI for the ARM Architecture"><a name="id684350"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.arm.com/miscPDFs/8033.pdf" target="_top">
|
||||
C++ ABI for the ARM Architecture
|
||||
</a>
|
||||
</em>. </span></p></div><div class="biblioentry" title="Dynamic Shared Objects: Survey and Issues"><a id="id571047"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1976.html">
|
||||
</i>. </span></p></div><div class="biblioentry" title="Dynamic Shared Objects: Survey and Issues"><a name="id684365"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1976.html" target="_top">
|
||||
Dynamic Shared Objects: Survey and Issues
|
||||
</a>
|
||||
</em>. </span><span class="subtitle">
|
||||
</i>. </span><span class="subtitle">
|
||||
ISO C++ J16/06-0046
|
||||
. </span><span class="author"><span class="firstname">Benjamin</span> <span class="surname">Kosnik</span>. </span></p></div><div class="biblioentry" title="Versioning With Namespaces"><a id="id571075"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2013.html">
|
||||
. </span><span class="author"><span class="firstname">Benjamin</span> <span class="surname">Kosnik</span>. </span></p></div><div class="biblioentry" title="Versioning With Namespaces"><a name="id684393"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2013.html" target="_top">
|
||||
Versioning With Namespaces
|
||||
</a>
|
||||
</em>. </span><span class="subtitle">
|
||||
</i>. </span><span class="subtitle">
|
||||
ISO C++ J16/06-0083
|
||||
. </span><span class="author"><span class="firstname">Benjamin</span> <span class="surname">Kosnik</span>. </span></p></div><div class="biblioentry" title="Binary Compatibility of Shared Libraries Implemented in C++ on GNU/Linux Systems"><a id="id571102"/><p><span class="title"><em>
|
||||
<a class="link" href="http://syrcose.ispras.ru/2009/files/SYRCoSE2009-CfP.pdf">
|
||||
. </span><span class="author"><span class="firstname">Benjamin</span> <span class="surname">Kosnik</span>. </span></p></div><div class="biblioentry" title="Binary Compatibility of Shared Libraries Implemented in C++ on GNU/Linux Systems"><a name="id684420"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://syrcose.ispras.ru/2009/files/SYRCoSE2009-CfP.pdf" target="_top">
|
||||
Binary Compatibility of Shared Libraries Implemented in C++
|
||||
on GNU/Linux Systems
|
||||
</a>
|
||||
</em>. </span><span class="subtitle">
|
||||
</i>. </span><span class="subtitle">
|
||||
SYRCoSE 2009
|
||||
. </span><span class="author"><span class="firstname">Pavel</span> <span class="surname">Shved</span>. </span><span class="author"><span class="firstname">Denis</span> <span class="surname">Silakov</span>. </span></p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="test.html">Prev</a> </td><td align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td align="right"> <a accesskey="n" href="api.html">Next</a></td></tr><tr><td align="left" valign="top">Test </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> API Evolution and Deprecation History</td></tr></table></div></body></html>
|
||||
. </span><span class="author"><span class="firstname">Pavel</span> <span class="surname">Shved</span>. </span><span class="author"><span class="firstname">Denis</span> <span class="surname">Silakov</span>. </span></p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="test.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="api.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Test </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> API Evolution and Deprecation History</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,18 +1,28 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 11. Algorithms</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library , algorithm "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="iterators.html" title="Chapter 10. Iterators"/><link rel="next" href="numerics.html" title="Chapter 12. Numerics"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 11.
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="iterators.html" title="Chapter 10. Iterators"><link rel="next" href="numerics.html" title="Chapter 12. Numerics"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 11.
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Algorithms
|
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|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="iterators.html">Prev</a> </td><th width="60%" align="center">Part II.
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</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="iterators.html">Prev</a> </td><th width="60%" align="center">Part II.
|
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Standard Contents
|
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</th><td align="right"> <a accesskey="n" href="numerics.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 11. Algorithms"><div class="titlepage"><div><div><h2 class="title"><a id="std.algorithms"/>Chapter 11.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="numerics.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 11. Algorithms"><div class="titlepage"><div><div><h2 class="title"><a name="std.algorithms"></a>Chapter 11.
|
||||
Algorithms
|
||||
<a id="id515203" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="algorithms.html#std.algorithms.mutating">Mutating</a></span></dt><dd><dl><dt><span class="section"><a href="algorithms.html#algorithms.mutating.swap"><code class="function">swap</code></a></span></dt><dd><dl><dt><span class="section"><a href="algorithms.html#algorithms.swap.specializations">Specializations</a></span></dt></dl></dd></dl></dd></dl></div><p>
|
||||
<a class="indexterm" name="id628522"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="algorithms.html#std.algorithms.mutating">Mutating</a></span></dt><dd><dl><dt><span class="section"><a href="algorithms.html#algorithms.mutating.swap"><code class="function">swap</code></a></span></dt><dd><dl><dt><span class="section"><a href="algorithms.html#algorithms.swap.specializations">Specializations</a></span></dt></dl></dd></dl></dd></dl></div><p>
|
||||
The neatest accomplishment of the algorithms section is that all the
|
||||
work is done via iterators, not containers directly. This means two
|
||||
important things:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Anything that behaves like an iterator can be used in one of
|
||||
these algorithms. Raw pointers make great candidates, thus
|
||||
built-in arrays are fine containers, as well as your own
|
||||
@ -42,7 +52,7 @@
|
||||
to cause so much confusion. Once you
|
||||
get <span class="emphasis"><em>range</em></span> into your head (it's not that hard,
|
||||
honest!), then the algorithms are a cakewalk.
|
||||
</p><div class="section" title="Mutating"><div class="titlepage"><div><div><h2 class="title"><a id="std.algorithms.mutating"/>Mutating</h2></div></div></div><div class="section" title="swap"><div class="titlepage"><div><div><h3 class="title"><a id="algorithms.mutating.swap"/><code class="function">swap</code></h3></div></div></div><div class="section" title="Specializations"><div class="titlepage"><div><div><h4 class="title"><a id="algorithms.swap.specializations"/>Specializations</h4></div></div></div><p>If you call <code class="code"> std::swap(x,y); </code> where x and y are standard
|
||||
</p><div class="section" title="Mutating"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.algorithms.mutating"></a>Mutating</h2></div></div></div><div class="section" title="swap"><div class="titlepage"><div><div><h3 class="title"><a name="algorithms.mutating.swap"></a><code class="function">swap</code></h3></div></div></div><div class="section" title="Specializations"><div class="titlepage"><div><div><h4 class="title"><a name="algorithms.swap.specializations"></a>Specializations</h4></div></div></div><p>If you call <code class="code"> std::swap(x,y); </code> where x and y are standard
|
||||
containers, then the call will automatically be replaced by a call to
|
||||
<code class="code"> x.swap(y); </code> instead.
|
||||
</p><p>This allows member functions of each container class to take over, and
|
||||
@ -52,10 +62,10 @@
|
||||
fact use constant-time swaps.) This should not be surprising, since
|
||||
for two containers of the same type to swap contents, only some
|
||||
internal pointers to storage need to be exchanged.
|
||||
</p></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="iterators.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="numerics.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 10.
|
||||
</p></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="iterators.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="numerics.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 10.
|
||||
Iterators
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 12.
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 12.
|
||||
Numerics
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,11 +1,19 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>API Evolution and Deprecation History</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content="ISO C++, api, evolution, deprecation, history"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"/><link rel="prev" href="abi.html" title="ABI Policy and Guidelines"/><link rel="next" href="backwards.html" title="Backwards Compatibility"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">API Evolution and Deprecation History</th></tr><tr><td align="left"><a accesskey="p" href="abi.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>API Evolution and Deprecation History</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="ISO C++, api, evolution, deprecation, history"><meta name="keywords" content="
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|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"><link rel="prev" href="abi.html" title="ABI Policy and Guidelines"><link rel="next" href="backwards.html" title="Backwards Compatibility"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">API Evolution and Deprecation History</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="abi.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
Porting and Maintenance
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="backwards.html">Next</a></td></tr></table><hr/></div><div class="section" title="API Evolution and Deprecation History"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.porting.api"/>API Evolution and Deprecation History</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="backwards.html">Next</a></td></tr></table><hr></div><div class="section" title="API Evolution and Deprecation History"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="appendix.porting.api"></a>API Evolution and Deprecation History</h2></div></div></div><p>
|
||||
A list of user-visible changes, in chronological order
|
||||
</p><div class="section" title="3.0"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_300"/><code class="constant">3.0</code></h3></div></div></div><p>
|
||||
</p><div class="section" title="3.0"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_300"></a><code class="constant">3.0</code></h3></div></div></div><p>
|
||||
Extensions moved to <code class="filename">include/ext</code>.
|
||||
</p><p>
|
||||
Include files from the SGI/HP sources that pre-date the ISO standard
|
||||
@ -14,7 +22,7 @@ the <code class="filename">include/backward</code> directory and a deprecated wa
|
||||
is added that notifies on inclusion (<code class="literal">-Wno-deprecated</code>
|
||||
deactivates the warning.)
|
||||
</p><p>Deprecated include <code class="filename">backward/strstream</code> added.</p><p>Removal of include <code class="filename">builtinbuf.h</code>, <code class="filename">indstream.h</code>, <code class="filename">parsestream.h</code>, <code class="filename">PlotFile.h</code>, <code class="filename">SFile.h</code>, <code class="filename">stdiostream.h</code>, and <code class="filename">stream.h</code>.
|
||||
</p></div><div class="section" title="3.1"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_310"/><code class="constant">3.1</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="3.1"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_310"></a><code class="constant">3.1</code></h3></div></div></div><p>
|
||||
</p><p>
|
||||
Extensions from SGI/HP moved from <code class="code">namespace std</code>
|
||||
to <code class="code">namespace __gnu_cxx</code>. As part of this, the following
|
||||
@ -26,7 +34,7 @@ Extensions to <code class="code">basic_filebuf</code> introduced: <code class="c
|
||||
Extensions to tree data structures added in <code class="filename">ext/rb_tree</code>.
|
||||
</p><p>
|
||||
Removal of <code class="filename">ext/tree</code>, moved to <code class="filename">backward/tree.h</code>.
|
||||
</p></div><div class="section" title="3.2"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_320"/><code class="constant">3.2</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="3.2"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_320"></a><code class="constant">3.2</code></h3></div></div></div><p>
|
||||
</p><p>Symbol versioning introduced for shared library.</p><p>Removal of include <code class="filename">backward/strstream.h</code>.</p><p>Allocator changes. Change <code class="code">__malloc_alloc</code> to <code class="code">malloc_allocator</code> and <code class="code">__new_alloc</code> to <code class="code">new_allocator</code>. </p><p> For GCC releases from 2.95 through the 3.1 series, defining
|
||||
<code class="literal">__USE_MALLOC</code> on the gcc command line would change the
|
||||
default allocation strategy to instead use <code class="code"> malloc</code> and
|
||||
@ -36,8 +44,8 @@ Removal of <code class="filename">ext/tree</code>, moved to <code class="filenam
|
||||
<code class="literal">GLIBCXX_FORCE_NEW</code> in the environment, see
|
||||
<a class="link" href="mt_allocator.html" title="Chapter 20. The mt_allocator">the mt allocator chapter</a>
|
||||
for details.
|
||||
</p><p>Error handling in iostreams cleaned up, made consistent. </p></div><div class="section" title="3.3"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_330"/><code class="constant">3.3</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="3.4"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_340"/><code class="constant">3.4</code></h3></div></div></div><p>
|
||||
</p><p>Error handling in iostreams cleaned up, made consistent. </p></div><div class="section" title="3.3"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_330"></a><code class="constant">3.3</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="3.4"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_340"></a><code class="constant">3.4</code></h3></div></div></div><p>
|
||||
</p><p>
|
||||
Large file support.
|
||||
</p><p> Extensions for generic characters and <code class="code">char_traits</code> added in <code class="filename">ext/pod_char_traits.h</code>.
|
||||
@ -78,11 +86,11 @@ _Alloc_traits</code> have been removed.
|
||||
<span class="type">__alloc</span> to select an underlying allocator that
|
||||
satisfied memory allocation requests. The selection of this
|
||||
underlying allocator was not user-configurable.
|
||||
</p><div class="table"><a id="id571666"/><p class="title"><strong>Table B.6. Extension Allocators</strong></p><div class="table-contents"><table summary="Extension Allocators" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/><col style="text-align: left" class="c3"/><col style="text-align: left" class="c4"/></colgroup><thead><tr><th style="text-align: left">Allocator (3.4)</th><th style="text-align: left">Header (3.4)</th><th style="text-align: left">Allocator (3.[0-3])</th><th style="text-align: left">Header (3.[0-3])</th></tr></thead><tbody><tr><td style="text-align: left"><code class="classname">__gnu_cxx::new_allocator<T></code></td><td style="text-align: left"><code class="filename">ext/new_allocator.h</code></td><td style="text-align: left"><code class="classname">std::__new_alloc</code></td><td style="text-align: left"><code class="filename">memory</code></td></tr><tr><td style="text-align: left"><code class="classname">__gnu_cxx::malloc_allocator<T></code></td><td style="text-align: left"><code class="filename">ext/malloc_allocator.h</code></td><td style="text-align: left"><code class="classname">std::__malloc_alloc_template<int></code></td><td style="text-align: left"><code class="filename">memory</code></td></tr><tr><td style="text-align: left"><code class="classname">__gnu_cxx::debug_allocator<T></code></td><td style="text-align: left"><code class="filename">ext/debug_allocator.h</code></td><td style="text-align: left"><code class="classname">std::debug_alloc<T></code></td><td style="text-align: left"><code class="filename">memory</code></td></tr><tr><td style="text-align: left"><code class="classname">__gnu_cxx::__pool_alloc<T></code></td><td style="text-align: left"><code class="filename">ext/pool_allocator.h</code></td><td style="text-align: left"><code class="classname">std::__default_alloc_template<bool,int></code></td><td style="text-align: left"><code class="filename">memory</code></td></tr><tr><td style="text-align: left"><code class="classname">__gnu_cxx::__mt_alloc<T></code></td><td style="text-align: left"><code class="filename">ext/mt_allocator.h</code></td><td style="text-align: left"> </td><td style="text-align: left"> </td></tr><tr><td style="text-align: left"><code class="classname">__gnu_cxx::bitmap_allocator<T></code></td><td style="text-align: left"><code class="filename">ext/bitmap_allocator.h</code></td><td style="text-align: left"> </td><td style="text-align: left"> </td></tr></tbody></table></div></div><br class="table-break"/><p> Releases after gcc-3.4 have continued to add to the collection
|
||||
</p><div class="table"><a name="id684984"></a><p class="title"><b>Table B.6. Extension Allocators</b></p><div class="table-contents"><table summary="Extension Allocators" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"><col align="left" class="c3"><col align="left" class="c4"></colgroup><thead><tr><th align="left">Allocator (3.4)</th><th align="left">Header (3.4)</th><th align="left">Allocator (3.[0-3])</th><th align="left">Header (3.[0-3])</th></tr></thead><tbody><tr><td align="left"><code class="classname">__gnu_cxx::new_allocator<T></code></td><td align="left"><code class="filename">ext/new_allocator.h</code></td><td align="left"><code class="classname">std::__new_alloc</code></td><td align="left"><code class="filename">memory</code></td></tr><tr><td align="left"><code class="classname">__gnu_cxx::malloc_allocator<T></code></td><td align="left"><code class="filename">ext/malloc_allocator.h</code></td><td align="left"><code class="classname">std::__malloc_alloc_template<int></code></td><td align="left"><code class="filename">memory</code></td></tr><tr><td align="left"><code class="classname">__gnu_cxx::debug_allocator<T></code></td><td align="left"><code class="filename">ext/debug_allocator.h</code></td><td align="left"><code class="classname">std::debug_alloc<T></code></td><td align="left"><code class="filename">memory</code></td></tr><tr><td align="left"><code class="classname">__gnu_cxx::__pool_alloc<T></code></td><td align="left"><code class="filename">ext/pool_allocator.h</code></td><td align="left"><code class="classname">std::__default_alloc_template<bool,int></code></td><td align="left"><code class="filename">memory</code></td></tr><tr><td align="left"><code class="classname">__gnu_cxx::__mt_alloc<T></code></td><td align="left"><code class="filename">ext/mt_allocator.h</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left"><code class="classname">__gnu_cxx::bitmap_allocator<T></code></td><td align="left"><code class="filename">ext/bitmap_allocator.h</code></td><td align="left"> </td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break"><p> Releases after gcc-3.4 have continued to add to the collection
|
||||
of available allocators. All of these new allocators are
|
||||
standard-style. The following table includes details, along with
|
||||
the first released version of GCC that included the extension allocator.
|
||||
</p><div class="table"><a id="id571896"/><p class="title"><strong>Table B.7. Extension Allocators Continued</strong></p><div class="table-contents"><table summary="Extension Allocators Continued" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/><col style="text-align: left" class="c3"/></colgroup><thead><tr><th style="text-align: left">Allocator</th><th style="text-align: left">Include</th><th style="text-align: left">Version</th></tr></thead><tbody><tr><td style="text-align: left"><code class="classname">__gnu_cxx::array_allocator<T></code></td><td style="text-align: left"><code class="filename">ext/array_allocator.h</code></td><td style="text-align: left">4.0.0</td></tr><tr><td style="text-align: left"><code class="classname">__gnu_cxx::throw_allocator<T></code></td><td style="text-align: left"><code class="filename">ext/throw_allocator.h</code></td><td style="text-align: left">4.2.0</td></tr></tbody></table></div></div><br class="table-break"/><p>
|
||||
</p><div class="table"><a name="id685214"></a><p class="title"><b>Table B.7. Extension Allocators Continued</b></p><div class="table-contents"><table summary="Extension Allocators Continued" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"><col align="left" class="c3"></colgroup><thead><tr><th align="left">Allocator</th><th align="left">Include</th><th align="left">Version</th></tr></thead><tbody><tr><td align="left"><code class="classname">__gnu_cxx::array_allocator<T></code></td><td align="left"><code class="filename">ext/array_allocator.h</code></td><td align="left">4.0.0</td></tr><tr><td align="left"><code class="classname">__gnu_cxx::throw_allocator<T></code></td><td align="left"><code class="filename">ext/throw_allocator.h</code></td><td align="left">4.2.0</td></tr></tbody></table></div></div><br class="table-break"><p>
|
||||
Debug mode first appears.
|
||||
</p><p>
|
||||
Precompiled header support <acronym class="acronym">PCH</acronym> support.
|
||||
@ -92,7 +100,7 @@ Macro guard for changed, from <code class="literal">_GLIBCPP_</code> to <code cl
|
||||
Extension <code class="filename">ext/stdio_sync_filebuf.h</code> added.
|
||||
</p><p>
|
||||
Extension <code class="filename">ext/demangle.h</code> added.
|
||||
</p></div><div class="section" title="4.0"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_400"/><code class="constant">4.0</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="4.0"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_400"></a><code class="constant">4.0</code></h3></div></div></div><p>
|
||||
</p><p>
|
||||
TR1 features first appear.
|
||||
</p><p>
|
||||
@ -101,14 +109,14 @@ Extension allocator <code class="filename">ext/array_allocator.h</code> added.
|
||||
Extension <code class="code">codecvt</code> specializations moved to <code class="filename">ext/codecvt_specializations.h</code>.
|
||||
</p><p>
|
||||
Removal of <code class="filename">ext/demangle.h</code>.
|
||||
</p></div><div class="section" title="4.1"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_410"/><code class="constant">4.1</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="4.1"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_410"></a><code class="constant">4.1</code></h3></div></div></div><p>
|
||||
</p><p>
|
||||
Removal of <code class="filename">cassert</code> from all standard headers: now has to be explicitly included for <code class="code">std::assert</code> calls.
|
||||
</p><p> Extensions for policy-based data structures first added. New includes,
|
||||
types, namespace <code class="code">pb_assoc</code>.
|
||||
</p><p> Extensions for typelists added in <code class="filename">ext/typelist.h</code>.
|
||||
</p><p> Extension for policy-based <code class="code">basic_string</code> first added: <code class="code">__gnu_cxx::__versa_string</code> in <code class="filename">ext/vstring.h</code>.
|
||||
</p></div><div class="section" title="4.2"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_420"/><code class="constant">4.2</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="4.2"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_420"></a><code class="constant">4.2</code></h3></div></div></div><p>
|
||||
</p><p> Default visibility attributes applied to <code class="code">namespace std</code>. Support for <code class="code">-fvisibility</code>.
|
||||
</p><p>TR1 <code class="filename">random</code>, <code class="filename">complex</code>, and C compatibility headers added.</p><p> Extensions for concurrent programming consolidated
|
||||
into <code class="filename">ext/concurrence.h</code> and <code class="filename">ext/atomicity.h</code>,
|
||||
@ -123,13 +131,13 @@ types, namespace moved to <code class="code">__pb_ds</code>.
|
||||
std::__debug</code> and extensions in <code class="code">namespace
|
||||
__gnu_cxx::__debug</code>.</p><p> Extensions added: <code class="filename">ext/typelist.h</code>
|
||||
and <code class="filename">ext/throw_allocator.h</code>.
|
||||
</p></div><div class="section" title="4.3"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_430"/><code class="constant">4.3</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="4.3"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_430"></a><code class="constant">4.3</code></h3></div></div></div><p>
|
||||
</p><p>
|
||||
C++0X features first appear.
|
||||
</p><p>TR1 <code class="filename">regex</code> and <code class="filename">cmath</code>'s mathematical special function added.
|
||||
</p><p>
|
||||
Backward include edit.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>Removed</p><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>Removed</p><p>
|
||||
<code class="filename">algobase.h</code> <code class="filename">algo.h</code> <code class="filename">alloc.h</code> <code class="filename">bvector.h</code> <code class="filename">complex.h</code>
|
||||
<code class="filename">defalloc.h</code> <code class="filename">deque.h</code> <code class="filename">fstream.h</code> <code class="filename">function.h</code> <code class="filename">hash_map.h</code> <code class="filename">hash_set.h</code>
|
||||
<code class="filename">hashtable.h</code> <code class="filename">heap.h</code> <code class="filename">iomanip.h</code> <code class="filename">iostream.h</code> <code class="filename">istream.h</code> <code class="filename">iterator.h</code>
|
||||
@ -141,7 +149,7 @@ Backward include edit.
|
||||
<code class="filename">auto_ptr.h</code> and <code class="filename">binders.h</code>
|
||||
</p></li></ul></div><p>
|
||||
Header dependency streamlining.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="filename">algorithm</code> no longer includes <code class="filename">climits</code>, <code class="filename">cstring</code>, or <code class="filename">iosfwd</code> </p></li><li class="listitem"><p><code class="filename">bitset</code> no longer includes <code class="filename">istream</code> or <code class="filename">ostream</code>, adds <code class="filename">iosfwd</code> </p></li><li class="listitem"><p><code class="filename">functional</code> no longer includes <code class="filename">cstddef</code></p></li><li class="listitem"><p><code class="filename">iomanip</code> no longer includes <code class="filename">istream</code>, <code class="filename">istream</code>, or <code class="filename">functional</code>, adds <code class="filename">ioswd</code> </p></li><li class="listitem"><p><code class="filename">numeric</code> no longer includes <code class="filename">iterator</code></p></li><li class="listitem"><p><code class="filename">string</code> no longer includes <code class="filename">algorithm</code> or <code class="filename">memory</code></p></li><li class="listitem"><p><code class="filename">valarray</code> no longer includes <code class="filename">numeric</code> or <code class="filename">cstdlib</code></p></li><li class="listitem"><p><code class="filename">tr1/hashtable</code> no longer includes <code class="filename">memory</code> or <code class="filename">functional</code></p></li><li class="listitem"><p><code class="filename">tr1/memory</code> no longer includes <code class="filename">algorithm</code></p></li><li class="listitem"><p><code class="filename">tr1/random</code> no longer includes <code class="filename">algorithm</code> or <code class="filename">fstream</code></p></li></ul></div><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="filename">algorithm</code> no longer includes <code class="filename">climits</code>, <code class="filename">cstring</code>, or <code class="filename">iosfwd</code> </p></li><li class="listitem"><p><code class="filename">bitset</code> no longer includes <code class="filename">istream</code> or <code class="filename">ostream</code>, adds <code class="filename">iosfwd</code> </p></li><li class="listitem"><p><code class="filename">functional</code> no longer includes <code class="filename">cstddef</code></p></li><li class="listitem"><p><code class="filename">iomanip</code> no longer includes <code class="filename">istream</code>, <code class="filename">istream</code>, or <code class="filename">functional</code>, adds <code class="filename">ioswd</code> </p></li><li class="listitem"><p><code class="filename">numeric</code> no longer includes <code class="filename">iterator</code></p></li><li class="listitem"><p><code class="filename">string</code> no longer includes <code class="filename">algorithm</code> or <code class="filename">memory</code></p></li><li class="listitem"><p><code class="filename">valarray</code> no longer includes <code class="filename">numeric</code> or <code class="filename">cstdlib</code></p></li><li class="listitem"><p><code class="filename">tr1/hashtable</code> no longer includes <code class="filename">memory</code> or <code class="filename">functional</code></p></li><li class="listitem"><p><code class="filename">tr1/memory</code> no longer includes <code class="filename">algorithm</code></p></li><li class="listitem"><p><code class="filename">tr1/random</code> no longer includes <code class="filename">algorithm</code> or <code class="filename">fstream</code></p></li></ul></div><p>
|
||||
Debug mode for <code class="filename">unordered_map</code> and <code class="filename">unordered_set</code>.
|
||||
</p><p>
|
||||
Parallel mode first appears.
|
||||
@ -155,10 +163,10 @@ Parallel mode first appears.
|
||||
PCH binary files no longer installed. Instead, the source files are installed.
|
||||
</p><p>
|
||||
Namespace pb_ds moved to __gnu_pb_ds.
|
||||
</p></div><div class="section" title="4.4"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_440"/><code class="constant">4.4</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="4.4"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_440"></a><code class="constant">4.4</code></h3></div></div></div><p>
|
||||
</p><p>
|
||||
C++0X features.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Added.
|
||||
</p><p>
|
||||
<code class="filename">atomic</code>,
|
||||
@ -210,10 +218,10 @@ and <code class="filename">ext/extptr_allocator.h</code>. Support
|
||||
for non-standard pointer types has been added
|
||||
to <code class="classname">vector</code>
|
||||
and <code class="classname">forward_list</code>.
|
||||
</p></div><div class="section" title="4.5"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_450"/><code class="constant">4.5</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="4.5"><div class="titlepage"><div><div><h3 class="title"><a name="api.rel_450"></a><code class="constant">4.5</code></h3></div></div></div><p>
|
||||
</p><p>
|
||||
C++0X features.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Added.
|
||||
</p><p>
|
||||
<code class="filename">functional</code>,
|
||||
@ -240,4 +248,4 @@ The default behavior for comparing typeinfo names changed, so
|
||||
in <code class="filename">typeinfo</code>, <code class="literal">__GXX_MERGED_TYPEINFO_NAMES</code>
|
||||
now defaults to zero.
|
||||
</p><p> Extensions modified: <code class="filename">ext/throw_allocator.h</code>.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="abi.html">Prev</a> </td><td align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td align="right"> <a accesskey="n" href="backwards.html">Next</a></td></tr><tr><td align="left" valign="top">ABI Policy and Guidelines </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Backwards Compatibility</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="abi.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="backwards.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">ABI Policy and Guidelines </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Backwards Compatibility</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,19 +1,27 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Appendix A. Contributing</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"/><link rel="prev" href="bk01pt04.html" title="Part IV. Appendices"/><link rel="next" href="source_organization.html" title="Directory Layout and Source Conventions"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix A.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Appendix A. Contributing</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"><link rel="prev" href="bk01pt04.html" title="Part IV. Appendices"><link rel="next" href="source_organization.html" title="Directory Layout and Source Conventions"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix A.
|
||||
Contributing
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt04.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt04.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
Appendices
|
||||
</th><td align="right"> <a accesskey="n" href="source_organization.html">Next</a></td></tr></table><hr/></div><div class="appendix" title="Appendix A. Contributing"><div class="titlepage"><div><div><h1 class="title"><a id="appendix.contrib"/>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="source_organization.html">Next</a></td></tr></table><hr></div><div class="appendix" title="Appendix A. Contributing"><div class="titlepage"><div><div><h1 class="title"><a name="appendix.contrib"></a>
|
||||
Contributing
|
||||
<a id="id562555" class="indexterm"/>
|
||||
</h1></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="appendix_contributing.html#contrib.list">Contributor Checklist</a></span></dt><dd><dl><dt><span class="section"><a href="appendix_contributing.html#list.reading">Reading</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.copyright">Assignment</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.getting">Getting Sources</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.patches">Submitting Patches</a></span></dt></dl></dd><dt><span class="section"><a href="source_organization.html">Directory Layout and Source Conventions</a></span></dt><dt><span class="section"><a href="source_code_style.html">Coding Style</a></span></dt><dd><dl><dt><span class="section"><a href="source_code_style.html#coding_style.bad_identifiers">Bad Identifiers</a></span></dt><dt><span class="section"><a href="source_code_style.html#coding_style.example">By Example</a></span></dt></dl></dd><dt><span class="section"><a href="source_design_notes.html">Design Notes</a></span></dt></dl></div><p>
|
||||
<a class="indexterm" name="id675873"></a>
|
||||
</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="appendix_contributing.html#contrib.list">Contributor Checklist</a></span></dt><dd><dl><dt><span class="section"><a href="appendix_contributing.html#list.reading">Reading</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.copyright">Assignment</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.getting">Getting Sources</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.patches">Submitting Patches</a></span></dt></dl></dd><dt><span class="section"><a href="source_organization.html">Directory Layout and Source Conventions</a></span></dt><dt><span class="section"><a href="source_code_style.html">Coding Style</a></span></dt><dd><dl><dt><span class="section"><a href="source_code_style.html#coding_style.bad_identifiers">Bad Identifiers</a></span></dt><dt><span class="section"><a href="source_code_style.html#coding_style.example">By Example</a></span></dt></dl></dd><dt><span class="section"><a href="source_design_notes.html">Design Notes</a></span></dt></dl></div><p>
|
||||
The GNU C++ Library follows an open development model. Active
|
||||
contributors are assigned maintainer-ship responsibility, and given
|
||||
write access to the source repository. First time contributors
|
||||
should follow this procedure:
|
||||
</p><div class="section" title="Contributor Checklist"><div class="titlepage"><div><div><h2 class="title"><a id="contrib.list"/>Contributor Checklist</h2></div></div></div><div class="section" title="Reading"><div class="titlepage"><div><div><h3 class="title"><a id="list.reading"/>Reading</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="section" title="Contributor Checklist"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="contrib.list"></a>Contributor Checklist</h2></div></div></div><div class="section" title="Reading"><div class="titlepage"><div><div><h3 class="title"><a name="list.reading"></a>Reading</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Get and read the relevant sections of the C++ language
|
||||
specification. Copies of the full ISO 14882 standard are
|
||||
available on line via the ISO mirror site for committee
|
||||
@ -23,21 +31,21 @@
|
||||
the standard from their respective national standards
|
||||
organization. In the USA, this national standards
|
||||
organization is
|
||||
<a class="link" href="http://www.ansi.org">ANSI</a>.
|
||||
<a class="link" href="http://www.ansi.org" target="_top">ANSI</a>.
|
||||
(And if you've already registered with them you can
|
||||
<a class="link" href="http://webstore.ansi.org/RecordDetail.aspx?sku=INCITS%2fISO%2fIEC+14882-2003">buy the standard on-line</a>.)
|
||||
<a class="link" href="http://webstore.ansi.org/RecordDetail.aspx?sku=INCITS%2fISO%2fIEC+14882-2003" target="_top">buy the standard on-line</a>.)
|
||||
</p></li><li class="listitem"><p>
|
||||
The library working group bugs, and known defects, can
|
||||
be obtained here:
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/">http://www.open-std.org/jtc1/sc22/wg21</a>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/" target="_top">http://www.open-std.org/jtc1/sc22/wg21</a>
|
||||
</p></li><li class="listitem"><p>
|
||||
The newsgroup dedicated to standardization issues is
|
||||
comp.std.c++: the
|
||||
<a class="link" href="http://www.comeaucomputing.com/csc/faq.html">FAQ</a>
|
||||
<a class="link" href="http://www.comeaucomputing.com/csc/faq.html" target="_top">FAQ</a>
|
||||
for this group is quite useful.
|
||||
</p></li><li class="listitem"><p>
|
||||
Peruse
|
||||
the <a class="link" href="http://www.gnu.org/prep/standards">GNU
|
||||
the <a class="link" href="http://www.gnu.org/prep/standards" target="_top">GNU
|
||||
Coding Standards</a>, and chuckle when you hit the part
|
||||
about <span class="quote">“<span class="quote">Using Languages Other Than C</span>”</span>.
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -48,7 +56,7 @@
|
||||
And last but certainly not least, read the
|
||||
library-specific information found in
|
||||
<a class="link" href="appendix_porting.html" title="Appendix B. Porting and Maintenance">Porting and Maintenance</a>.
|
||||
</p></li></ul></div></div><div class="section" title="Assignment"><div class="titlepage"><div><div><h3 class="title"><a id="list.copyright"/>Assignment</h3></div></div></div><p>
|
||||
</p></li></ul></div></div><div class="section" title="Assignment"><div class="titlepage"><div><div><h3 class="title"><a name="list.copyright"></a>Assignment</h3></div></div></div><p>
|
||||
Small changes can be accepted without a copyright assignment form on
|
||||
file. New code and additions to the library need completed copyright
|
||||
assignment form on file at the FSF. Note: your employer may be required
|
||||
@ -66,7 +74,7 @@
|
||||
this question would be appreciated.
|
||||
</p><p>
|
||||
For more information about getting a copyright assignment, please see
|
||||
<a class="link" href="http://www.gnu.org/prep/maintain/html_node/Legal-Matters.html">Legal
|
||||
<a class="link" href="http://www.gnu.org/prep/maintain/html_node/Legal-Matters.html" target="_top">Legal
|
||||
Matters</a>.
|
||||
</p><p>
|
||||
Please contact Benjamin Kosnik at
|
||||
@ -75,14 +83,14 @@
|
||||
requesting an assignment form from
|
||||
<code class="email"><<a class="email" href="mailto:mailto:assign@gnu.org">mailto:assign@gnu.org</a>></code>, please cc the libstdc++
|
||||
maintainer above so that progress can be monitored.
|
||||
</p></div><div class="section" title="Getting Sources"><div class="titlepage"><div><div><h3 class="title"><a id="list.getting"/>Getting Sources</h3></div></div></div><p>
|
||||
<a class="link" href="http://gcc.gnu.org/svnwrite.html">Getting write access
|
||||
</p></div><div class="section" title="Getting Sources"><div class="titlepage"><div><div><h3 class="title"><a name="list.getting"></a>Getting Sources</h3></div></div></div><p>
|
||||
<a class="link" href="http://gcc.gnu.org/svnwrite.html" target="_top">Getting write access
|
||||
(look for "Write after approval")</a>
|
||||
</p></div><div class="section" title="Submitting Patches"><div class="titlepage"><div><div><h3 class="title"><a id="list.patches"/>Submitting Patches</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Submitting Patches"><div class="titlepage"><div><div><h3 class="title"><a name="list.patches"></a>Submitting Patches</h3></div></div></div><p>
|
||||
Every patch must have several pieces of information before it can be
|
||||
properly evaluated. Ideally (and to ensure the fastest possible
|
||||
response from the maintainers) it would have all of these pieces:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
A description of the bug and how your patch fixes this
|
||||
bug. For new features a description of the feature and your
|
||||
implementation.
|
||||
@ -103,7 +111,7 @@
|
||||
else, use <span class="command"><strong>diff -cp OLD NEW</strong></span> ... If your
|
||||
version of diff does not support these options, then get the
|
||||
latest version of GNU
|
||||
diff. The <a class="link" href="http://gcc.gnu.org/wiki/SvnTricks">SVN
|
||||
diff. The <a class="link" href="http://gcc.gnu.org/wiki/SvnTricks" target="_top">SVN
|
||||
Tricks</a> wiki page has information on customising the
|
||||
output of <code class="code">svn diff</code>.
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -111,6 +119,6 @@
|
||||
mail message and send it to libstdc++@gcc.gnu.org. All
|
||||
patches and related discussion should be sent to the
|
||||
libstdc++ mailing list.
|
||||
</p></li></ul></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt04.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td align="right"> <a accesskey="n" href="source_organization.html">Next</a></td></tr><tr><td align="left" valign="top">Part IV.
|
||||
</p></li></ul></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt04.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="source_organization.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part IV.
|
||||
Appendices
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Directory Layout and Source Conventions</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Directory Layout and Source Conventions</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,13 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Appendix C. Free Software Needs Free Documentation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"/><link rel="prev" href="backwards.html" title="Backwards Compatibility"/><link rel="next" href="appendix_gpl.html" title="Appendix D. GNU General Public License version 3"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix C.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Appendix C. Free Software Needs Free Documentation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"><link rel="prev" href="backwards.html" title="Backwards Compatibility"><link rel="next" href="appendix_gpl.html" title="Appendix D. GNU General Public License version 3"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix C.
|
||||
Free Software Needs Free Documentation
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="backwards.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="backwards.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
Appendices
|
||||
</th><td align="right"> <a accesskey="n" href="appendix_gpl.html">Next</a></td></tr></table><hr/></div><div class="appendix" title="Appendix C. Free Software Needs Free Documentation"><div class="titlepage"><div><div><h1 class="title"><a id="appendix.free"/>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="appendix_gpl.html">Next</a></td></tr></table><hr></div><div class="appendix" title="Appendix C. Free Software Needs Free Documentation"><div class="titlepage"><div><div><h1 class="title"><a name="appendix.free"></a>
|
||||
Free Software Needs Free Documentation
|
||||
<a id="id574972" class="indexterm"/>
|
||||
<a class="indexterm" name="id688290"></a>
|
||||
</h1></div></div></div><p>
|
||||
The biggest deficiency in free operating systems is not in the
|
||||
software--it is the lack of good free manuals that we can include in
|
||||
@ -41,7 +49,7 @@ can ill afford to lose manuals this way.
|
||||
Free documentation, like free software, is a matter of freedom,
|
||||
not price. The problem with these manuals was not that O'Reilly
|
||||
Associates charged a price for printed copies--that in itself is fine.
|
||||
(The Free Software Foundation <a class="link" href="http://www.gnu.org/doc/doc.html">sells printed copies</a> of
|
||||
(The Free Software Foundation <a class="link" href="http://www.gnu.org/doc/doc.html" target="_top">sells printed copies</a> of
|
||||
free GNU manuals, too.) But GNU manuals are available in source code
|
||||
form, while these manuals are available only on paper. GNU manuals
|
||||
come with permission to copy and modify; the Perl manuals do not.
|
||||
@ -117,10 +125,10 @@ manuals instead of proprietary ones. One way you can help this is to
|
||||
check the distribution terms of a manual before you buy it, and
|
||||
prefer copylefted manuals to non-copylefted ones.
|
||||
</p><p>
|
||||
[Note: We now maintain a <a class="link" href="http://www.fsf.org/licensing/doc/other-free-books.html">web page
|
||||
[Note: We now maintain a <a class="link" href="http://www.fsf.org/licensing/doc/other-free-books.html" target="_top">web page
|
||||
that lists free books available from other publishers</a>].
|
||||
</p><p>Copyright © 2004, 2005, 2006, 2007 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA</p><p>Verbatim copying and distribution of this entire article are
|
||||
permitted worldwide, without royalty, in any medium, provided this
|
||||
notice is preserved.</p><p>Report any problems or suggestions to <code class="email"><<a class="email" href="mailto:webmaster@fsf.org">webmaster@fsf.org</a>></code>.</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="backwards.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td align="right"> <a accesskey="n" href="appendix_gpl.html">Next</a></td></tr><tr><td align="left" valign="top">Backwards Compatibility </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Appendix D.
|
||||
notice is preserved.</p><p>Report any problems or suggestions to <code class="email"><<a class="email" href="mailto:webmaster@fsf.org">webmaster@fsf.org</a>></code>.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="backwards.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="appendix_gpl.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Backwards Compatibility </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Appendix D.
|
||||
<acronym class="acronym">GNU</acronym> General Public License version 3
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Appendix E. GNU Free Documentation License</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"/><link rel="prev" href="appendix_gpl.html" title="Appendix D. GNU General Public License version 3"/><link rel="next" href="../bk02.html" title=""/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix E. GNU Free Documentation License</th></tr><tr><td align="left"><a accesskey="p" href="appendix_gpl.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Appendix E. GNU Free Documentation License</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"><link rel="prev" href="appendix_gpl.html" title="Appendix D. GNU General Public License version 3"><link rel="next" href="../bk02.html" title=""></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix E. GNU Free Documentation License</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_gpl.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
Appendices
|
||||
</th><td align="right"> <a accesskey="n" href="../bk02.html">Next</a></td></tr></table><hr/></div><div class="appendix" title="Appendix E. GNU Free Documentation License"><div class="titlepage"><div><div><h1 class="title"><a id="appendix.gfdl-1.3"/>GNU Free Documentation License</h1></div></div></div><p>Version 1.3, 3 November 2008</p><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="../bk02.html">Next</a></td></tr></table><hr></div><div class="appendix" title="Appendix E. GNU Free Documentation License"><div class="titlepage"><div><div><h1 class="title"><a name="appendix.gfdl-1.3"></a>GNU Free Documentation License</h1></div></div></div><p>Version 1.3, 3 November 2008</p><p>
|
||||
Copyright © 2000, 2001, 2002, 2007, 2008
|
||||
<a class="link" href="http://www.fsf.org/">Free Software Foundation, Inc.</a>
|
||||
<a class="link" href="http://www.fsf.org/" target="_top">Free Software Foundation, Inc.</a>
|
||||
</p><p>
|
||||
Everyone is permitted to copy and distribute verbatim copies of this
|
||||
license document, but changing it is not allowed.
|
||||
</p><h3><a id="fdl-1-section0"/>
|
||||
</p><h3><a name="fdl-1-section0"></a>
|
||||
0. PREAMBLE
|
||||
</h3><p>
|
||||
The purpose of this License is to make a manual, textbook, or other
|
||||
@ -31,7 +35,7 @@
|
||||
for any textual work, regardless of subject matter or whether it is
|
||||
published as a printed book. We recommend this License principally for
|
||||
works whose purpose is instruction or reference.
|
||||
</p><h3><a id="fdl-1-section1"/>
|
||||
</p><h3><a name="fdl-1-section1"></a>
|
||||
1. APPLICABILITY AND DEFINITIONS
|
||||
</h3><p>
|
||||
This License applies to any manual or other work, in any medium, that
|
||||
@ -120,7 +124,7 @@
|
||||
but only as regards disclaiming warranties: any other implication that
|
||||
these Warranty Disclaimers may have is void and has no effect on the
|
||||
meaning of this License.
|
||||
</p><h3><a id="fdl-1-section2"/>
|
||||
</p><h3><a name="fdl-1-section2"></a>
|
||||
2. VERBATIM COPYING
|
||||
</h3><p>
|
||||
You may copy and distribute the Document in any medium, either
|
||||
@ -135,7 +139,7 @@
|
||||
</p><p>
|
||||
You may also lend copies, under the same conditions stated above, and you
|
||||
may publicly display copies.
|
||||
</p><h3><a id="fdl-1-section3"/>
|
||||
</p><h3><a name="fdl-1-section3"></a>
|
||||
3. COPYING IN QUANTITY
|
||||
</h3><p>
|
||||
If you publish printed copies (or copies in media that commonly have
|
||||
@ -169,7 +173,7 @@
|
||||
It is requested, but not required, that you contact the authors of the
|
||||
Document well before redistributing any large number of copies, to give
|
||||
them a chance to provide you with an updated version of the Document.
|
||||
</p><h3><a id="fdl-1-section4"/>
|
||||
</p><h3><a name="fdl-1-section4"></a>
|
||||
4. MODIFICATIONS
|
||||
</h3><p>
|
||||
You may copy and distribute a Modified Version of the Document under the
|
||||
@ -178,7 +182,7 @@
|
||||
filling the role of the Document, thus licensing distribution and
|
||||
modification of the Modified Version to whoever possesses a copy of it. In
|
||||
addition, you must do these things in the Modified Version:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem">
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="A"><li class="listitem">
|
||||
Use in the Title Page (and on the covers, if any) a title distinct
|
||||
from that of the Document, and from those of previous versions (which
|
||||
should, if there were any, be listed in the History section of the
|
||||
@ -269,7 +273,7 @@
|
||||
The author(s) and publisher(s) of the Document do not by this License give
|
||||
permission to use their names for publicity for or to assert or imply
|
||||
endorsement of any Modified Version.
|
||||
</p><h3><a id="fdl-1-section5"/>
|
||||
</p><h3><a name="fdl-1-section5"></a>
|
||||
5. COMBINING DOCUMENTS
|
||||
</h3><p>
|
||||
You may combine the Document with other documents released under this
|
||||
@ -294,7 +298,7 @@
|
||||
Entitled “Acknowledgements”, and any sections Entitled
|
||||
“Dedications”. You must delete all sections Entitled
|
||||
“Endorsements”.
|
||||
</p><h3><a id="fdl-1-section6"/>
|
||||
</p><h3><a name="fdl-1-section6"></a>
|
||||
6. COLLECTIONS OF DOCUMENTS
|
||||
</h3><p>
|
||||
You may make a collection consisting of the Document and other documents
|
||||
@ -307,7 +311,7 @@
|
||||
it individually under this License, provided you insert a copy of this
|
||||
License into the extracted document, and follow this License in all other
|
||||
respects regarding verbatim copying of that document.
|
||||
</p><h3><a id="fdl-1-section7"/>
|
||||
</p><h3><a name="fdl-1-section7"></a>
|
||||
7. AGGREGATION WITH INDEPENDENT WORKS
|
||||
</h3><p>
|
||||
A compilation of the Document or its derivatives with other separate and
|
||||
@ -325,7 +329,7 @@
|
||||
bracket the Document within the aggregate, or the electronic equivalent of
|
||||
covers if the Document is in electronic form. Otherwise they must appear
|
||||
on printed covers that bracket the whole aggregate.
|
||||
</p><h3><a id="fdl-1-section8"/>
|
||||
</p><h3><a name="fdl-1-section8"></a>
|
||||
8. TRANSLATION
|
||||
</h3><p>
|
||||
Translation is considered a kind of modification, so you may distribute
|
||||
@ -344,7 +348,7 @@
|
||||
“Dedications”, or “History”, the requirement
|
||||
(section 4) to Preserve its Title (section 1) will typically require
|
||||
changing the actual title.
|
||||
</p><h3><a id="fdl-1-section9"/>
|
||||
</p><h3><a name="fdl-1-section9"></a>
|
||||
9. TERMINATION
|
||||
</h3><p>
|
||||
You may not copy, modify, sublicense, or distribute the Document except as
|
||||
@ -370,14 +374,14 @@
|
||||
License. If your rights have been terminated and not permanently
|
||||
reinstated, receipt of a copy of some or all of the same material does not
|
||||
give you any rights to use it.
|
||||
</p><h3><a id="fdl-1-section10"/>
|
||||
</p><h3><a name="fdl-1-section10"></a>
|
||||
10. FUTURE REVISIONS OF THIS LICENSE
|
||||
</h3><p>
|
||||
The Free Software Foundation may publish new, revised versions of the GNU
|
||||
Free Documentation License from time to time. Such new versions will be
|
||||
similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns. See
|
||||
<a class="link" href="http://www.gnu.org/copyleft/">Copyleft</a>.
|
||||
<a class="link" href="http://www.gnu.org/copyleft/" target="_top">Copyleft</a>.
|
||||
</p><p>
|
||||
Each version of the License is given a distinguishing version number. If
|
||||
the Document specifies that a particular numbered version of this License
|
||||
@ -390,7 +394,7 @@
|
||||
can decide which future versions of this License can be used, that
|
||||
proxy’s public statement of acceptance of a version permanently
|
||||
authorizes you to choose that version for the Document.
|
||||
</p><h3><a id="fdl-1-section11"/>
|
||||
</p><h3><a name="fdl-1-section11"></a>
|
||||
11. RELICENSING
|
||||
</h3><p>
|
||||
“Massive Multiauthor Collaboration Site” (or “MMC
|
||||
@ -419,7 +423,7 @@
|
||||
The operator of an MMC Site may republish an MMC contained in the site
|
||||
under CC-BY-SA on the same site at any time before August 1, 2009,
|
||||
provided the MMC is eligible for relicensing.
|
||||
</p><h3><a id="fdl-1-addendum"/>
|
||||
</p><h3><a name="fdl-1-addendum"></a>
|
||||
ADDENDUM: How to use this License for your documents
|
||||
</h3><p>
|
||||
To use this License in a document you have written, include a copy of the
|
||||
@ -444,6 +448,6 @@ being LIST, and with the Back-Cover Texts being LIST.</pre><p>
|
||||
recommend releasing these examples in parallel under your choice of free
|
||||
software license, such as the GNU General Public License, to permit their
|
||||
use in free software.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="appendix_gpl.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td align="right"> <a accesskey="n" href="../bk02.html">Next</a></td></tr><tr><td align="left" valign="top">Appendix D.
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_gpl.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="../bk02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix D.
|
||||
<acronym class="acronym">GNU</acronym> General Public License version 3
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
|
||||
@ -1,20 +1,24 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Appendix D. GNU General Public License version 3</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"/><link rel="prev" href="appendix_free.html" title="Appendix C. Free Software Needs Free Documentation"/><link rel="next" href="appendix_gfdl.html" title="Appendix E. GNU Free Documentation License"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix D.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Appendix D. GNU General Public License version 3</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"><link rel="prev" href="appendix_free.html" title="Appendix C. Free Software Needs Free Documentation"><link rel="next" href="appendix_gfdl.html" title="Appendix E. GNU Free Documentation License"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix D.
|
||||
<acronym class="acronym">GNU</acronym> General Public License version 3
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="appendix_free.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_free.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
Appendices
|
||||
</th><td align="right"> <a accesskey="n" href="appendix_gfdl.html">Next</a></td></tr></table><hr/></div><div class="appendix" title="Appendix D. GNU General Public License version 3"><div class="titlepage"><div><div><h1 class="title"><a id="appendix.gpl-3.0"/>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="appendix_gfdl.html">Next</a></td></tr></table><hr></div><div class="appendix" title="Appendix D. GNU General Public License version 3"><div class="titlepage"><div><div><h1 class="title"><a name="appendix.gpl-3.0"></a>
|
||||
<acronym class="acronym">GNU</acronym> General Public License version 3
|
||||
</h1></div></div></div><p>
|
||||
Version 3, 29 June 2007
|
||||
</p><p>
|
||||
Copyright © 2007 Free Software Foundation, Inc.
|
||||
<a class="link" href="http://www.fsf.org/">http://www.fsf.org/</a>
|
||||
<a class="link" href="http://www.fsf.org/" target="_top">http://www.fsf.org/</a>
|
||||
</p><p>
|
||||
Everyone is permitted to copy and distribute verbatim copies of this license
|
||||
document, but changing it is not allowed.
|
||||
</p><h2><a id="gpl-3-preamble"/>
|
||||
</p><h2><a name="gpl-3-preamble"></a>
|
||||
Preamble
|
||||
</h2><p>
|
||||
The <acronym class="acronym">GNU</acronym> General Public License is a free, copyleft
|
||||
@ -78,9 +82,9 @@
|
||||
</p><p>
|
||||
The precise terms and conditions for copying, distribution and modification
|
||||
follow.
|
||||
</p><h2><a id="id575311"/>
|
||||
</p><h2><a name="id688629"></a>
|
||||
TERMS AND CONDITIONS
|
||||
</h2><h2><a id="gpl-3-definitions"/>
|
||||
</h2><h2><a name="gpl-3-definitions"></a>
|
||||
0. Definitions.
|
||||
</h2><p>
|
||||
“This License” refers to version 3 of the <acronym class="acronym">GNU</acronym>
|
||||
@ -122,7 +126,7 @@
|
||||
License, and how to view a copy of this License. If the interface presents
|
||||
a list of user commands or options, such as a menu, a prominent item in the
|
||||
list meets this criterion.
|
||||
</p><h2><a id="SourceCode"/>
|
||||
</p><h2><a name="SourceCode"></a>
|
||||
1. Source Code.
|
||||
</h2><p>
|
||||
The “source code” for a work means the preferred form of the
|
||||
@ -162,7 +166,7 @@
|
||||
automatically from other parts of the Corresponding Source.
|
||||
</p><p>
|
||||
The Corresponding Source for a work in source code form is that same work.
|
||||
</p><h2><a id="BasicPermissions"/>
|
||||
</p><h2><a name="BasicPermissions"></a>
|
||||
2. Basic Permissions.
|
||||
</h2><p>
|
||||
All rights granted under this License are granted for the term of copyright
|
||||
@ -187,7 +191,7 @@
|
||||
Conveying under any other circumstances is permitted solely under the
|
||||
conditions stated below. Sublicensing is not allowed; section 10 makes it
|
||||
unnecessary.
|
||||
</p><h2><a id="Protecting"/>
|
||||
</p><h2><a name="Protecting"></a>
|
||||
3. Protecting Users’ Legal Rights From Anti-Circumvention Law.
|
||||
</h2><p>
|
||||
No covered work shall be deemed part of an effective technological measure
|
||||
@ -202,7 +206,7 @@
|
||||
the work as a means of enforcing, against the work’s users, your or
|
||||
third parties’ legal rights to forbid circumvention of technological
|
||||
measures.
|
||||
</p><h2><a id="ConveyingVerbatim"/>
|
||||
</p><h2><a name="ConveyingVerbatim"></a>
|
||||
4. Conveying Verbatim Copies.
|
||||
</h2><p>
|
||||
You may convey verbatim copies of the Program’s source code as you
|
||||
@ -215,13 +219,13 @@
|
||||
</p><p>
|
||||
You may charge any price or no price for each copy that you convey, and you
|
||||
may offer support or warranty protection for a fee.
|
||||
</p><h2><a id="ConveyingModified"/>
|
||||
</p><h2><a name="ConveyingModified"></a>
|
||||
5. Conveying Modified Source Versions.
|
||||
</h2><p>
|
||||
You may convey a work based on the Program, or the modifications to produce
|
||||
it from the Program, in the form of source code under the terms of section
|
||||
4, provided that you also meet all of these conditions:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p>
|
||||
The work must carry prominent notices stating that you modified it, and
|
||||
giving a relevant date.
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -251,13 +255,13 @@
|
||||
or legal rights of the compilation’s users beyond what the individual works
|
||||
permit. Inclusion of a covered work in an aggregate does not cause
|
||||
this License to apply to the other parts of the aggregate.
|
||||
</p><h2><a id="ConveyingNonSource"/>
|
||||
</p><h2><a name="ConveyingNonSource"></a>
|
||||
6. Conveying Non-Source Forms.
|
||||
</h2><p>
|
||||
You may convey a covered work in object code form under the terms of
|
||||
sections 4 and 5, provided that you also convey the machine-readable
|
||||
Corresponding Source under the terms of this License, in one of these ways:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p>
|
||||
Convey the object code in, or embodied in, a physical product (including
|
||||
a physical distribution medium), accompanied by the Corresponding Source
|
||||
fixed on a durable physical medium customarily used for software
|
||||
@ -346,7 +350,7 @@
|
||||
(and with an implementation available to the public in source code form),
|
||||
and must require no special password or key for unpacking, reading or
|
||||
copying.
|
||||
</p><h2><a id="AdditionalTerms"/>
|
||||
</p><h2><a name="AdditionalTerms"></a>
|
||||
7. Additional Terms.
|
||||
</h2><p>
|
||||
“Additional permissions” are terms that supplement the terms of
|
||||
@ -368,7 +372,7 @@
|
||||
Notwithstanding any other provision of this License, for material you add
|
||||
to a covered work, you may (if authorized by the copyright holders of that
|
||||
material) supplement the terms of this License with terms:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p>
|
||||
Disclaiming warranty or limiting liability differently from the terms
|
||||
of sections 15 and 16 of this License; or
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -410,7 +414,7 @@
|
||||
Additional terms, permissive or non-permissive, may be stated in the form
|
||||
of a separately written license, or stated as exceptions; the above
|
||||
requirements apply either way.
|
||||
</p><h2><a id="gpl-3-termination"/>
|
||||
</p><h2><a name="gpl-3-termination"></a>
|
||||
8. Termination.
|
||||
</h2><p>
|
||||
You may not propagate or modify a covered work except as expressly provided
|
||||
@ -436,7 +440,7 @@
|
||||
License. If your rights have been terminated and not permanently
|
||||
reinstated, you do not qualify to receive new licenses for the same
|
||||
material under section 10.
|
||||
</p><h2><a id="AcceptanceNotRequired"/>
|
||||
</p><h2><a name="AcceptanceNotRequired"></a>
|
||||
9. Acceptance Not Required for Having Copies.
|
||||
</h2><p>
|
||||
You are not required to accept this License in order to receive or run a
|
||||
@ -447,7 +451,7 @@
|
||||
These actions infringe copyright if you do not accept this License.
|
||||
Therefore, by modifying or propagating a covered work, you indicate your
|
||||
acceptance of this License to do so.
|
||||
</p><h2><a id="AutomaticDownstream"/>
|
||||
</p><h2><a name="AutomaticDownstream"></a>
|
||||
10. Automatic Licensing of Downstream Recipients.
|
||||
</h2><p>
|
||||
Each time you convey a covered work, the recipient automatically receives a
|
||||
@ -472,7 +476,7 @@
|
||||
or counterclaim in a lawsuit) alleging that any patent claim is infringed
|
||||
by making, using, selling, offering for sale, or importing the Program or
|
||||
any portion of it.
|
||||
</p><h2><a id="Patents"/>
|
||||
</p><h2><a name="Patents"></a>
|
||||
11. Patents.
|
||||
</h2><p>
|
||||
A “contributor” is a copyright holder who authorizes use under
|
||||
@ -539,7 +543,7 @@
|
||||
Nothing in this License shall be construed as excluding or limiting any
|
||||
implied license or other defenses to infringement that may otherwise be
|
||||
available to you under applicable patent law.
|
||||
</p><h2><a id="NoSurrender"/>
|
||||
</p><h2><a name="NoSurrender"></a>
|
||||
12. No Surrender of Others’ Freedom.
|
||||
</h2><p>
|
||||
If conditions are imposed on you (whether by court order, agreement or
|
||||
@ -551,7 +555,7 @@
|
||||
to collect a royalty for further conveying from those to whom you convey the
|
||||
Program, the only way you could satisfy both those terms and this License
|
||||
would be to refrain entirely from conveying the Program.
|
||||
</p><h2><a id="UsedWithAGPL"/>
|
||||
</p><h2><a name="UsedWithAGPL"></a>
|
||||
13. Use with the <acronym class="acronym">GNU</acronym> Affero General Public License.
|
||||
</h2><p>
|
||||
Notwithstanding any other provision of this License, you have permission to
|
||||
@ -562,7 +566,7 @@
|
||||
requirements of the <acronym class="acronym">GNU</acronym> Affero General Public License,
|
||||
section 13, concerning interaction through a network will apply to the
|
||||
combination as such.
|
||||
</p><h2><a id="RevisedVersions"/>
|
||||
</p><h2><a name="RevisedVersions"></a>
|
||||
14. Revised Versions of this License.
|
||||
</h2><p>
|
||||
The Free Software Foundation may publish revised and/or new versions of the
|
||||
@ -587,7 +591,7 @@
|
||||
Later license versions may give you additional or different permissions.
|
||||
However, no additional obligations are imposed on any author or copyright
|
||||
holder as a result of your choosing to follow a later version.
|
||||
</p><h2><a id="WarrantyDisclaimer"/>
|
||||
</p><h2><a name="WarrantyDisclaimer"></a>
|
||||
15. Disclaimer of Warranty.
|
||||
</h2><p>
|
||||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
|
||||
@ -598,7 +602,7 @@
|
||||
THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH
|
||||
YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
|
||||
NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
</p><h2><a id="LiabilityLimitation"/>
|
||||
</p><h2><a name="LiabilityLimitation"></a>
|
||||
16. Limitation of Liability.
|
||||
</h2><p>
|
||||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL
|
||||
@ -610,7 +614,7 @@
|
||||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
</p><h2><a id="InterpretationSecs1516"/>
|
||||
</p><h2><a name="InterpretationSecs1516"></a>
|
||||
17. Interpretation of Sections 15 and 16.
|
||||
</h2><p>
|
||||
If the disclaimer of warranty and limitation of liability provided above
|
||||
@ -619,9 +623,9 @@
|
||||
waiver of all civil liability in connection with the Program, unless a
|
||||
warranty or assumption of liability accompanies a copy of the Program in
|
||||
return for a fee.
|
||||
</p><h2><a id="id576135"/>
|
||||
</p><h2><a name="id689453"></a>
|
||||
END OF TERMS AND CONDITIONS
|
||||
</h2><h2><a id="HowToApply"/>
|
||||
</h2><h2><a name="HowToApply"></a>
|
||||
How to Apply These Terms to Your New Programs
|
||||
</h2><p>
|
||||
If you develop a new program, and you want it to be of the greatest possible
|
||||
@ -648,7 +652,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
<acronym class="acronym">GNU</acronym> General Public License for more details.
|
||||
|
||||
You should have received a copy of the <acronym class="acronym">GNU</acronym> General Public License
|
||||
along with this program. If not, see <a class="link" href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.
|
||||
along with this program. If not, see <a class="link" href="http://www.gnu.org/licenses/" target="_top">http://www.gnu.org/licenses/</a>.
|
||||
</pre><p>
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
</p><p>
|
||||
@ -669,15 +673,15 @@ under certain conditions; type ‘<code class="literal">show c</code>’ for det
|
||||
if any, to sign a “copyright disclaimer” for the program, if
|
||||
necessary. For more information on this, and how to apply and follow the
|
||||
<acronym class="acronym">GNU</acronym> <acronym class="acronym">GPL</acronym>, see
|
||||
<a class="link" href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.
|
||||
<a class="link" href="http://www.gnu.org/licenses/" target="_top">http://www.gnu.org/licenses/</a>.
|
||||
</p><p>
|
||||
The <acronym class="acronym">GNU</acronym> General Public License does not permit
|
||||
incorporating your program into proprietary programs. If your program is a
|
||||
subroutine library, you may consider it more useful to permit linking
|
||||
proprietary applications with the library. If this is what you want to do,
|
||||
use the <acronym class="acronym">GNU</acronym> Lesser General Public License instead of this
|
||||
License. But first, please read <a class="link" href="http://www.gnu.org/philosophy/why-not-lgpl.html">http://www.gnu.org/philosophy/why-not-lgpl.html</a>.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="appendix_free.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td align="right"> <a accesskey="n" href="appendix_gfdl.html">Next</a></td></tr><tr><td align="left" valign="top">Appendix C.
|
||||
License. But first, please read <a class="link" href="http://www.gnu.org/philosophy/why-not-lgpl.html" target="_top">http://www.gnu.org/philosophy/why-not-lgpl.html</a>.
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_free.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="appendix_gfdl.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix C.
|
||||
Free Software Needs Free Documentation
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Appendix E. GNU Free Documentation License</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Appendix E. GNU Free Documentation License</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Appendix B. Porting and Maintenance</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"/><link rel="prev" href="source_design_notes.html" title="Design Notes"/><link rel="next" href="documentation_hacking.html" title="Writing and Generating Documentation"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix B.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Appendix B. Porting and Maintenance</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt04.html" title="Part IV. Appendices"><link rel="prev" href="source_design_notes.html" title="Design Notes"><link rel="next" href="documentation_hacking.html" title="Writing and Generating Documentation"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix B.
|
||||
Porting and Maintenance
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="source_design_notes.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="source_design_notes.html">Prev</a> </td><th width="60%" align="center">Part IV.
|
||||
Appendices
|
||||
</th><td align="right"> <a accesskey="n" href="documentation_hacking.html">Next</a></td></tr></table><hr/></div><div class="appendix" title="Appendix B. Porting and Maintenance"><div class="titlepage"><div><div><h1 class="title"><a id="appendix.porting"/>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="documentation_hacking.html">Next</a></td></tr></table><hr></div><div class="appendix" title="Appendix B. Porting and Maintenance"><div class="titlepage"><div><div><h1 class="title"><a name="appendix.porting"></a>
|
||||
Porting and Maintenance
|
||||
<a id="id563673" class="indexterm"/>
|
||||
</h1></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="appendix_porting.html#appendix.porting.build_hacking">Configure and Build Hacking</a></span></dt><dd><dl><dt><span class="section"><a href="appendix_porting.html#build_hacking.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.map">Overview: What Comes from Where</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.scripts">Storing Information in non-AC files (like configure.host)</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.conventions">Coding and Commenting Conventions</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.acinclude">The acinclude.m4 layout</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.enable"><code class="constant">GLIBCXX_ENABLE</code>, the <code class="literal">--enable</code> maker</a></span></dt></dl></dd><dt><span class="section"><a href="documentation_hacking.html">Writing and Generating Documentation</a></span></dt><dd><dl><dt><span class="section"><a href="documentation_hacking.html#doc.intro">Introduction</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#doc.generation">Generating Documentation</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#doc.doxygen">Doxygen</a></span></dt><dd><dl><dt><span class="section"><a href="documentation_hacking.html#doxygen.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#doxygen.rules">Generating the Doxygen Files</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#doxygen.markup">Markup</a></span></dt></dl></dd><dt><span class="section"><a href="documentation_hacking.html#doc.docbook">Docbook</a></span></dt><dd><dl><dt><span class="section"><a href="documentation_hacking.html#docbook.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#docbook.rules">Generating the DocBook Files</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#docbook.validation">Editing and Validation</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#docbook.examples">File Organization and Basics</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#docbook.markup">Markup By Example</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="internals.html">Porting to New Hardware or Operating Systems</a></span></dt><dd><dl><dt><span class="section"><a href="internals.html#internals.os">Operating System</a></span></dt><dt><span class="section"><a href="internals.html#internals.cpu">CPU</a></span></dt><dt><span class="section"><a href="internals.html#internals.char_types">Character Types</a></span></dt><dt><span class="section"><a href="internals.html#internals.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="internals.html#internals.numeric_limits">Numeric Limits</a></span></dt><dt><span class="section"><a href="internals.html#internals.libtool">Libtool</a></span></dt></dl></dd><dt><span class="section"><a href="test.html">Test</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.organization">Organization</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.organization.layout">Directory Layout</a></span></dt><dt><span class="section"><a href="test.html#test.organization.naming">Naming Conventions</a></span></dt></dl></dd><dt><span class="section"><a href="test.html#test.run">Running the Testsuite</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.run.basic">Basic</a></span></dt><dt><span class="section"><a href="test.html#test.run.variations">Variations</a></span></dt><dt><span class="section"><a href="test.html#test.run.permutations">Permutations</a></span></dt></dl></dd><dt><span class="section"><a href="test.html#test.new_tests">Writing a new test case</a></span></dt><dt><span class="section"><a href="test.html#test.harness">Test Harness and Utilities</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.harness.dejagnu">Dejagnu Harness Details</a></span></dt><dt><span class="section"><a href="test.html#test.harness.utils">Utilities</a></span></dt></dl></dd><dt><span class="section"><a href="test.html#test.special">Special Topics</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.exception.safety">
|
||||
<a class="indexterm" name="id676991"></a>
|
||||
</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="appendix_porting.html#appendix.porting.build_hacking">Configure and Build Hacking</a></span></dt><dd><dl><dt><span class="section"><a href="appendix_porting.html#build_hacking.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.map">Overview: What Comes from Where</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.scripts">Storing Information in non-AC files (like configure.host)</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.conventions">Coding and Commenting Conventions</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.acinclude">The acinclude.m4 layout</a></span></dt><dt><span class="section"><a href="appendix_porting.html#build_hacking.enable"><code class="constant">GLIBCXX_ENABLE</code>, the <code class="literal">--enable</code> maker</a></span></dt></dl></dd><dt><span class="section"><a href="documentation_hacking.html">Writing and Generating Documentation</a></span></dt><dd><dl><dt><span class="section"><a href="documentation_hacking.html#doc.intro">Introduction</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#doc.generation">Generating Documentation</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#doc.doxygen">Doxygen</a></span></dt><dd><dl><dt><span class="section"><a href="documentation_hacking.html#doxygen.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#doxygen.rules">Generating the Doxygen Files</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#doxygen.markup">Markup</a></span></dt></dl></dd><dt><span class="section"><a href="documentation_hacking.html#doc.docbook">Docbook</a></span></dt><dd><dl><dt><span class="section"><a href="documentation_hacking.html#docbook.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#docbook.rules">Generating the DocBook Files</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#docbook.validation">Editing and Validation</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#docbook.examples">File Organization and Basics</a></span></dt><dt><span class="section"><a href="documentation_hacking.html#docbook.markup">Markup By Example</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="internals.html">Porting to New Hardware or Operating Systems</a></span></dt><dd><dl><dt><span class="section"><a href="internals.html#internals.os">Operating System</a></span></dt><dt><span class="section"><a href="internals.html#internals.cpu">CPU</a></span></dt><dt><span class="section"><a href="internals.html#internals.char_types">Character Types</a></span></dt><dt><span class="section"><a href="internals.html#internals.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="internals.html#internals.numeric_limits">Numeric Limits</a></span></dt><dt><span class="section"><a href="internals.html#internals.libtool">Libtool</a></span></dt></dl></dd><dt><span class="section"><a href="test.html">Test</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.organization">Organization</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.organization.layout">Directory Layout</a></span></dt><dt><span class="section"><a href="test.html#test.organization.naming">Naming Conventions</a></span></dt></dl></dd><dt><span class="section"><a href="test.html#test.run">Running the Testsuite</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.run.basic">Basic</a></span></dt><dt><span class="section"><a href="test.html#test.run.variations">Variations</a></span></dt><dt><span class="section"><a href="test.html#test.run.permutations">Permutations</a></span></dt></dl></dd><dt><span class="section"><a href="test.html#test.new_tests">Writing a new test case</a></span></dt><dt><span class="section"><a href="test.html#test.harness">Test Harness and Utilities</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.harness.dejagnu">Dejagnu Harness Details</a></span></dt><dt><span class="section"><a href="test.html#test.harness.utils">Utilities</a></span></dt></dl></dd><dt><span class="section"><a href="test.html#test.special">Special Topics</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.exception.safety">
|
||||
Qualifying Exception Safety Guarantees
|
||||
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="test.html#test.exception.safety.overview">Overview</a></span></dt><dt><span class="section"><a href="test.html#test.exception.safety.status">
|
||||
@ -30,8 +38,8 @@ Support for C++TR1 dialect.
|
||||
Support for C++11 dialect.
|
||||
</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.iterator_type">
|
||||
<code class="code">Container::iterator_type</code> is not necessarily <code class="code">Container::value_type*</code>
|
||||
</a></span></dt></dl></dd></dl></dd></dl></div><div class="section" title="Configure and Build Hacking"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.porting.build_hacking"/>Configure and Build Hacking</h2></div></div></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h3 class="title"><a id="build_hacking.prereq"/>Prerequisites</h3></div></div></div><p>
|
||||
As noted <a class="link" href="http://gcc.gnu.org/install/prerequisites.html">previously</a>,
|
||||
</a></span></dt></dl></dd></dl></dd></dl></div><div class="section" title="Configure and Build Hacking"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="appendix.porting.build_hacking"></a>Configure and Build Hacking</h2></div></div></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h3 class="title"><a name="build_hacking.prereq"></a>Prerequisites</h3></div></div></div><p>
|
||||
As noted <a class="link" href="http://gcc.gnu.org/install/prerequisites.html" target="_top">previously</a>,
|
||||
certain other tools are necessary for hacking on files that
|
||||
control configure (<code class="code">configure.ac</code>,
|
||||
<code class="code">acinclude.m4</code>) and make
|
||||
@ -41,17 +49,17 @@ Support for C++11 dialect.
|
||||
in GCC try to stay in sync with each other in terms of versions of
|
||||
the auto-tools used, so please try to play nicely with the
|
||||
neighbors.
|
||||
</p></div><div class="section" title="Overview: What Comes from Where"><div class="titlepage"><div><div><h3 class="title"><a id="build_hacking.map"/>Overview: What Comes from Where</h3></div></div></div><div class="figure"><a id="id563805"/><p class="title"><strong>Figure B.1. Configure and Build File Dependencies</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/confdeps.png" style="text-align: middle" alt="Dependency Graph for Configure and Build Files"/></div></div></div><br class="figure-break"/><p>
|
||||
</p></div><div class="section" title="Overview: What Comes from Where"><div class="titlepage"><div><div><h3 class="title"><a name="build_hacking.map"></a>Overview: What Comes from Where</h3></div></div></div><div class="figure"><a name="id677123"></a><p class="title"><b>Figure B.1. Configure and Build File Dependencies</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/confdeps.png" align="middle" alt="Dependency Graph for Configure and Build Files"></div></div></div><br class="figure-break"><p>
|
||||
Regenerate all generated files by using the command sequence
|
||||
<code class="code">"autoreconf"</code> at the top level of the libstdc++ source
|
||||
directory. The following will also work, but is much more complex:
|
||||
<code class="code">"aclocal-1.11 && autoconf-2.64 &&
|
||||
autoheader-2.64 && automake-1.11"</code> The version
|
||||
numbers may be absent entirely or otherwise vary depending on
|
||||
<a class="link" href="http://gcc.gnu.org/install/prerequisites.html">the
|
||||
<a class="link" href="http://gcc.gnu.org/install/prerequisites.html" target="_top">the
|
||||
current requirements</a> and your vendor's choice of
|
||||
installation names.
|
||||
</p></div><div class="section" title="Storing Information in non-AC files (like configure.host)"><div class="titlepage"><div><div><h3 class="title"><a id="build_hacking.scripts"/>Storing Information in non-AC files (like configure.host)</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Storing Information in non-AC files (like configure.host)"><div class="titlepage"><div><div><h3 class="title"><a name="build_hacking.scripts"></a>Storing Information in non-AC files (like configure.host)</h3></div></div></div><p>
|
||||
Until that glorious day when we can use AC_TRY_LINK with a
|
||||
cross-compiler, we have to hardcode the results of what the tests
|
||||
would have shown if they could be run. So we have an inflexible
|
||||
@ -73,7 +81,7 @@ Support for C++11 dialect.
|
||||
for instance, but then we would need arguments to aclocal/autoconf
|
||||
to properly find them all when generating configure. I would
|
||||
discourage that.
|
||||
</p></div><div class="section" title="Coding and Commenting Conventions"><div class="titlepage"><div><div><h3 class="title"><a id="build_hacking.conventions"/>Coding and Commenting Conventions</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Coding and Commenting Conventions"><div class="titlepage"><div><div><h3 class="title"><a name="build_hacking.conventions"></a>Coding and Commenting Conventions</h3></div></div></div><p>
|
||||
Most comments should use {octothorpes, shibboleths, hash marks,
|
||||
pound signs, whatever} rather than "dnl". Nearly all comments in
|
||||
configure.ac should. Comments inside macros written in ancilliary
|
||||
@ -90,7 +98,7 @@ Support for C++11 dialect.
|
||||
Do not use any <code class="code">$target*</code> variables, such as
|
||||
<code class="code">$target_alias</code>. The single exception is in
|
||||
configure.ac, for automake+dejagnu's sake.
|
||||
</p></div><div class="section" title="The acinclude.m4 layout"><div class="titlepage"><div><div><h3 class="title"><a id="build_hacking.acinclude"/>The acinclude.m4 layout</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="The acinclude.m4 layout"><div class="titlepage"><div><div><h3 class="title"><a name="build_hacking.acinclude"></a>The acinclude.m4 layout</h3></div></div></div><p>
|
||||
The nice thing about acinclude.m4/aclocal.m4 is that macros aren't
|
||||
actually performed/called/expanded/whatever here, just loaded. So
|
||||
we can arrange the contents however we like. As of this writing,
|
||||
@ -161,11 +169,11 @@ Support for C++11 dialect.
|
||||
</pre><p>
|
||||
Things which we don't seem to use directly, but just has to be
|
||||
present otherwise stuff magically goes wonky.
|
||||
</p></div><div class="section" title="GLIBCXX_ENABLE, the --enable maker"><div class="titlepage"><div><div><h3 class="title"><a id="build_hacking.enable"/><code class="constant">GLIBCXX_ENABLE</code>, the <code class="literal">--enable</code> maker</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="GLIBCXX_ENABLE, the --enable maker"><div class="titlepage"><div><div><h3 class="title"><a name="build_hacking.enable"></a><code class="constant">GLIBCXX_ENABLE</code>, the <code class="literal">--enable</code> maker</h3></div></div></div><p>
|
||||
All the GLIBCXX_ENABLE_FOO macros use a common helper,
|
||||
GLIBCXX_ENABLE. (You don't have to use it, but it's easy.) The
|
||||
helper does two things for us:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Builds the call to the AC_ARG_ENABLE macro, with --help text
|
||||
properly quoted and aligned. (Death to changequote!)
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -190,7 +198,7 @@ Support for C++11 dialect.
|
||||
GLIBCXX_ENABLE (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
|
||||
GLIBCXX_ENABLE (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
|
||||
GLIBCXX_ENABLE (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
|
||||
</pre><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</pre><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
FEATURE is the string that follows --enable. The results of the
|
||||
test (such as it is) will be in the variable $enable_FEATURE,
|
||||
where FEATURE has been squashed. Example:
|
||||
@ -218,7 +226,7 @@ Support for C++11 dialect.
|
||||
</p><p>
|
||||
If you're wondering what that line noise in the last example was,
|
||||
that's how you embed autoconf special characters in output text.
|
||||
They're called <a class="link" href="http://www.gnu.org/software/autoconf/manual/autoconf.html#Quadrigraphs"><span class="emphasis"><em>quadrigraphs</em></span></a>
|
||||
They're called <a class="link" href="http://www.gnu.org/software/autoconf/manual/autoconf.html#Quadrigraphs" target="_top"><span class="emphasis"><em>quadrigraphs</em></span></a>
|
||||
and you should use them whenever necessary.
|
||||
</p></li><li class="listitem"><p>HELP-STRING is what you think it is. Do not include the
|
||||
"default" text like we used to do; it will be done for you by
|
||||
@ -249,4 +257,4 @@ Support for C++11 dialect.
|
||||
argument checking at all is done in this signature. See
|
||||
GLIBCXX_ENABLE_CXX_FLAGS for an example of handling, and an error
|
||||
message.
|
||||
</p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="source_design_notes.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td align="right"> <a accesskey="n" href="documentation_hacking.html">Next</a></td></tr><tr><td align="left" valign="top">Design Notes </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Writing and Generating Documentation</td></tr></table></div></body></html>
|
||||
</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="source_design_notes.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt04.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="documentation_hacking.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Design Notes </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Writing and Generating Documentation</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Associative</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="containers.html" title="Chapter 9. Containers"/><link rel="prev" href="containers.html" title="Chapter 9. Containers"/><link rel="next" href="containers_and_c.html" title="Interacting with C"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Associative</th></tr><tr><td align="left"><a accesskey="p" href="containers.html">Prev</a> </td><th width="60%" align="center">Chapter 9.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Associative</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="containers.html" title="Chapter 9. Containers"><link rel="prev" href="containers.html" title="Chapter 9. Containers"><link rel="next" href="containers_and_c.html" title="Interacting with C"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Associative</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="containers.html">Prev</a> </td><th width="60%" align="center">Chapter 9.
|
||||
Containers
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="containers_and_c.html">Next</a></td></tr></table><hr/></div><div class="section" title="Associative"><div class="titlepage"><div><div><h2 class="title"><a id="std.containers.associative"/>Associative</h2></div></div></div><div class="section" title="Insertion Hints"><div class="titlepage"><div><div><h3 class="title"><a id="containers.associative.insert_hints"/>Insertion Hints</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="containers_and_c.html">Next</a></td></tr></table><hr></div><div class="section" title="Associative"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.containers.associative"></a>Associative</h2></div></div></div><div class="section" title="Insertion Hints"><div class="titlepage"><div><div><h3 class="title"><a name="containers.associative.insert_hints"></a>Insertion Hints</h3></div></div></div><p>
|
||||
Section [23.1.2], Table 69, of the C++ standard lists this
|
||||
function for all of the associative containers (map, set, etc):
|
||||
</p><pre class="programlisting">
|
||||
@ -13,7 +21,7 @@
|
||||
item to insert. The standard says that <span class="quote">“<span class="quote"><code class="code">t</code> is
|
||||
inserted as close as possible to the position just prior to
|
||||
<code class="code">p</code>.</span>”</span> (Library DR #233 addresses this topic,
|
||||
referring to <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1780.html">N1780</a>.
|
||||
referring to <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1780.html" target="_top">N1780</a>.
|
||||
Since version 4.2 GCC implements the resolution to DR 233, so
|
||||
that insertions happen as close as possible to the hint. For
|
||||
earlier releases the hint was only used as described below.
|
||||
@ -39,7 +47,7 @@
|
||||
paragraph. *grin*
|
||||
</p><p>
|
||||
If the <code class="code">hint</code> parameter ('p' above) is equivalent to:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<code class="code">begin()</code>, then the item being inserted should
|
||||
have a key less than all the other keys in the container.
|
||||
The item will be inserted at the beginning of the container,
|
||||
@ -84,7 +92,7 @@
|
||||
the new item would in fact belong there. If the hint does not
|
||||
point to the correct place, then no further local searching is
|
||||
done; the search begins from scratch in logarithmic time.
|
||||
</p></div><div class="section" title="bitset"><div class="titlepage"><div><div><h3 class="title"><a id="containers.associative.bitset"/>bitset</h3></div></div></div><div class="section" title="Size Variable"><div class="titlepage"><div><div><h4 class="title"><a id="associative.bitset.size_variable"/>Size Variable</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="bitset"><div class="titlepage"><div><div><h3 class="title"><a name="containers.associative.bitset"></a>bitset</h3></div></div></div><div class="section" title="Size Variable"><div class="titlepage"><div><div><h4 class="title"><a name="associative.bitset.size_variable"></a>Size Variable</h4></div></div></div><p>
|
||||
No, you cannot write code of the form
|
||||
</p><pre class="programlisting">
|
||||
#include <bitset>
|
||||
@ -102,7 +110,7 @@
|
||||
There are a couple of ways to handle this kind of thing. Please
|
||||
consider all of them before passing judgement. They include, in
|
||||
no chaptericular order:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>A very large N in <code class="code">bitset<N></code>.</p></li><li class="listitem"><p>A container<bool>.</p></li><li class="listitem"><p>Extremely weird solutions.</p></li></ul></div><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>A very large N in <code class="code">bitset<N></code>.</p></li><li class="listitem"><p>A container<bool>.</p></li><li class="listitem"><p>Extremely weird solutions.</p></li></ul></div><p>
|
||||
<span class="emphasis"><em>A very large N in
|
||||
<code class="code">bitset<N></code>. </em></span> It has been
|
||||
pointed out a few times in newsgroups that N bits only takes up
|
||||
@ -169,7 +177,7 @@
|
||||
</p><p>
|
||||
Also note that the implementation of bitset used in libstdc++ has
|
||||
<a class="link" href="ext_containers.html#manual.ext.containers.sgi" title="Backwards Compatibility">some extensions</a>.
|
||||
</p></div><div class="section" title="Type String"><div class="titlepage"><div><div><h4 class="title"><a id="associative.bitset.type_string"/>Type String</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Type String"><div class="titlepage"><div><div><h4 class="title"><a name="associative.bitset.type_string"></a>Type String</h4></div></div></div><p>
|
||||
</p><p>
|
||||
Bitmasks do not take char* nor const char* arguments in their
|
||||
constructors. This is something of an accident, but you can read
|
||||
@ -186,7 +194,7 @@
|
||||
instead of
|
||||
</p><pre class="programlisting">
|
||||
std::bitset<5> b ( <span class="quote">“<span class="quote">10110</span>”</span> ); // invalid
|
||||
</pre></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="containers.html">Prev</a> </td><td align="center"><a accesskey="u" href="containers.html">Up</a></td><td align="right"> <a accesskey="n" href="containers_and_c.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 9.
|
||||
</pre></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="containers.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="containers.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="containers_and_c.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 9.
|
||||
Containers
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Interacting with C</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Interacting with C</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,16 +1,26 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 14. Atomics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library , atomic "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="io_and_c.html" title="Interacting with C"/><link rel="next" href="concurrency.html" title="Chapter 15. Concurrency"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 14.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 14. Atomics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
,
|
||||
atomic
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="io_and_c.html" title="Interacting with C"><link rel="next" href="concurrency.html" title="Chapter 15. Concurrency"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 14.
|
||||
Atomics
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="io_and_c.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="io_and_c.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="concurrency.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 14. Atomics"><div class="titlepage"><div><div><h2 class="title"><a id="std.atomics"/>Chapter 14.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="concurrency.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 14. Atomics"><div class="titlepage"><div><div><h2 class="title"><a name="std.atomics"></a>Chapter 14.
|
||||
Atomics
|
||||
<a id="id516871" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="atomics.html#std.atomics.api">API Reference</a></span></dt></dl></div><p>
|
||||
<a class="indexterm" name="id630189"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="atomics.html#std.atomics.api">API Reference</a></span></dt></dl></div><p>
|
||||
Facilities for atomic operations.
|
||||
</p><div class="section" title="API Reference"><div class="titlepage"><div><div><h2 class="title"><a id="std.atomics.api"/>API Reference</h2></div></div></div><p>
|
||||
</p><div class="section" title="API Reference"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.atomics.api"></a>API Reference</h2></div></div></div><p>
|
||||
All items are declared in the standard header
|
||||
file <code class="filename">atomic</code>.
|
||||
</p><p>
|
||||
@ -25,7 +35,7 @@
|
||||
<code class="classname">atomic<int></code>.
|
||||
</p><p>
|
||||
Full API details.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="io_and_c.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="concurrency.html">Next</a></td></tr><tr><td align="left" valign="top">Interacting with C </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 15.
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="io_and_c.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="concurrency.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Interacting with C </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 15.
|
||||
Concurrency
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Backwards Compatibility</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , backwards "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"/><link rel="prev" href="api.html" title="API Evolution and Deprecation History"/><link rel="next" href="appendix_free.html" title="Appendix C. Free Software Needs Free Documentation"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Backwards Compatibility</th></tr><tr><td align="left"><a accesskey="p" href="api.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Backwards Compatibility</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
backwards
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"><link rel="prev" href="api.html" title="API Evolution and Deprecation History"><link rel="next" href="appendix_free.html" title="Appendix C. Free Software Needs Free Documentation"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Backwards Compatibility</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="api.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
Porting and Maintenance
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="appendix_free.html">Next</a></td></tr></table><hr/></div><div class="section" title="Backwards Compatibility"><div class="titlepage"><div><div><h2 class="title"><a id="manual.appendix.porting.backwards"/>Backwards Compatibility</h2></div></div></div><div class="section" title="First"><div class="titlepage"><div><div><h3 class="title"><a id="backwards.first"/>First</h3></div></div></div><p>The first generation GNU C++ library was called libg++. It was a
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="appendix_free.html">Next</a></td></tr></table><hr></div><div class="section" title="Backwards Compatibility"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.appendix.porting.backwards"></a>Backwards Compatibility</h2></div></div></div><div class="section" title="First"><div class="titlepage"><div><div><h3 class="title"><a name="backwards.first"></a>First</h3></div></div></div><p>The first generation GNU C++ library was called libg++. It was a
|
||||
separate GNU project, although reliably paired with GCC. Rumors imply
|
||||
that it had a working relationship with at least two kinds of
|
||||
dinosaur.
|
||||
@ -17,8 +29,8 @@ ISO Standard (e.g., statistical analysis). While there are a lot of
|
||||
really useful things that are used by a lot of people, the Standards
|
||||
Committee couldn't include everything, and so a lot of those
|
||||
<span class="quote">“<span class="quote">obvious</span>”</span> classes didn't get included.
|
||||
</p><p>Known Issues include many of the limitations of its immediate ancestor.</p><p>Portability notes and known implementation limitations are as follows.</p><div class="section" title="No ios_base"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.first.ios_base"/>No <code class="code">ios_base</code></h4></div></div></div><p> At least some older implementations don't have <code class="code">std::ios_base</code>, so you should use <code class="code">std::ios::badbit</code>, <code class="code">std::ios::failbit</code> and <code class="code">std::ios::eofbit</code> and <code class="code">std::ios::goodbit</code>.
|
||||
</p></div><div class="section" title="No cout in <ostream.h>, no cin in <istream.h>"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.first.cout_cin"/>No <code class="code">cout</code> in <code class="filename"><ostream.h></code>, no <code class="code">cin</code> in <code class="filename"><istream.h></code></h4></div></div></div><p>
|
||||
</p><p>Known Issues include many of the limitations of its immediate ancestor.</p><p>Portability notes and known implementation limitations are as follows.</p><div class="section" title="No ios_base"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.first.ios_base"></a>No <code class="code">ios_base</code></h4></div></div></div><p> At least some older implementations don't have <code class="code">std::ios_base</code>, so you should use <code class="code">std::ios::badbit</code>, <code class="code">std::ios::failbit</code> and <code class="code">std::ios::eofbit</code> and <code class="code">std::ios::goodbit</code>.
|
||||
</p></div><div class="section" title="No cout in <ostream.h>, no cin in <istream.h>"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.first.cout_cin"></a>No <code class="code">cout</code> in <code class="filename"><ostream.h></code>, no <code class="code">cin</code> in <code class="filename"><istream.h></code></h4></div></div></div><p>
|
||||
In earlier versions of the standard,
|
||||
<code class="filename"><fstream.h></code>,
|
||||
<code class="filename"><ostream.h></code>
|
||||
@ -29,10 +41,10 @@ Committee couldn't include everything, and so a lot of those
|
||||
explicitly to get the required definitions.
|
||||
</p><p> Some include adjustment may be required.</p><p>This project is no longer maintained or supported, and the sources
|
||||
archived. For the desperate,
|
||||
the <a class="link" href="http://gcc.gnu.org/extensions.html">GCC extensions
|
||||
the <a class="link" href="http://gcc.gnu.org/extensions.html" target="_top">GCC extensions
|
||||
page</a> describes where to find the last libg++ source. The code is
|
||||
considered replaced and rewritten.
|
||||
</p></div></div><div class="section" title="Second"><div class="titlepage"><div><div><h3 class="title"><a id="backwards.second"/>Second</h3></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Second"><div class="titlepage"><div><div><h3 class="title"><a name="backwards.second"></a>Second</h3></div></div></div><p>
|
||||
The second generation GNU C++ library was called libstdc++, or
|
||||
libstdc++-v2. It spans the time between libg++ and pre-ISO C++
|
||||
standardization and is usually associated with the following GCC
|
||||
@ -44,7 +56,7 @@ considered replaced and rewritten.
|
||||
archived. The code is considered replaced and rewritten.
|
||||
</p><p>
|
||||
Portability notes and known implementation limitations are as follows.
|
||||
</p><div class="section" title="Namespace std:: not supported"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.std"/>Namespace <code class="code">std::</code> not supported</h4></div></div></div><p>
|
||||
</p><div class="section" title="Namespace std:: not supported"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.std"></a>Namespace <code class="code">std::</code> not supported</h4></div></div></div><p>
|
||||
Some care is required to support C++ compiler and or library
|
||||
implementation that do not have the standard library in
|
||||
<code class="code">namespace std</code>.
|
||||
@ -108,10 +120,10 @@ AC_DEFUN([AC_CXX_NAMESPACE_STD], [
|
||||
AC_DEFINE(HAVE_NAMESPACE_STD,,[Define if g++ supports namespace std. ])
|
||||
fi
|
||||
])
|
||||
</pre></div><div class="section" title="Illegal iterator usage"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.iterators"/>Illegal iterator usage</h4></div></div></div><p>
|
||||
</pre></div><div class="section" title="Illegal iterator usage"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.iterators"></a>Illegal iterator usage</h4></div></div></div><p>
|
||||
The following illustrate implementation-allowed illegal iterator
|
||||
use, and then correct use.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
you cannot do <code class="code">ostream::operator<<(iterator)</code>
|
||||
to print the address of the iterator => use
|
||||
<code class="code">operator<< &*iterator</code> instead
|
||||
@ -121,7 +133,7 @@ AC_DEFUN([AC_CXX_NAMESPACE_STD], [
|
||||
</p></li><li class="listitem"><p>
|
||||
<code class="code">if (iterator)</code> won't work any more => use
|
||||
<code class="code">if (iterator != iterator_type())</code>
|
||||
</p></li></ul></div></div><div class="section" title="isspace from <cctype> is a macro"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.isspace"/><code class="code">isspace</code> from <code class="filename"><cctype></code> is a macro
|
||||
</p></li></ul></div></div><div class="section" title="isspace from <cctype> is a macro"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.isspace"></a><code class="code">isspace</code> from <code class="filename"><cctype></code> is a macro
|
||||
</h4></div></div></div><p>
|
||||
Glibc 2.0.x and 2.1.x define <code class="filename"><ctype.h></code> functionality as macros
|
||||
(isspace, isalpha etc.).
|
||||
@ -155,7 +167,7 @@ std:: (__ctype_b[(int) ( ( 'X' ) )] & (unsigned short int) _ISspace ) ;
|
||||
(<code class="filename"><ctype.h></code>) and the
|
||||
definitions in namespace <code class="code">std::</code>
|
||||
(<code class="code"><cctype></code>).
|
||||
</p></div><div class="section" title="No vector::at, deque::at, string::at"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.at"/>No <code class="code">vector::at</code>, <code class="code">deque::at</code>, <code class="code">string::at</code></h4></div></div></div><p>
|
||||
</p></div><div class="section" title="No vector::at, deque::at, string::at"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.at"></a>No <code class="code">vector::at</code>, <code class="code">deque::at</code>, <code class="code">string::at</code></h4></div></div></div><p>
|
||||
One solution is to add an autoconf-test for this:
|
||||
</p><pre class="programlisting">
|
||||
AC_MSG_CHECKING(for container::at)
|
||||
@ -181,7 +193,7 @@ AC_DEFINE(HAVE_CONTAINER_AT)],
|
||||
</pre><p>
|
||||
If you are using other (non-GNU) compilers it might be a good idea
|
||||
to check for <code class="code">string::at</code> separately.
|
||||
</p></div><div class="section" title="No std::char_traits<char>::eof"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.eof"/>No <code class="code">std::char_traits<char>::eof</code></h4></div></div></div><p>
|
||||
</p></div><div class="section" title="No std::char_traits<char>::eof"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.eof"></a>No <code class="code">std::char_traits<char>::eof</code></h4></div></div></div><p>
|
||||
Use some kind of autoconf test, plus this:
|
||||
</p><pre class="programlisting">
|
||||
#ifdef HAVE_CHAR_TRAITS
|
||||
@ -189,7 +201,7 @@ AC_DEFINE(HAVE_CONTAINER_AT)],
|
||||
#else
|
||||
#define CPP_EOF EOF
|
||||
#endif
|
||||
</pre></div><div class="section" title="No string::clear"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.stringclear"/>No <code class="code">string::clear</code></h4></div></div></div><p>
|
||||
</pre></div><div class="section" title="No string::clear"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.stringclear"></a>No <code class="code">string::clear</code></h4></div></div></div><p>
|
||||
There are two functions for deleting the contents of a string:
|
||||
<code class="code">clear</code> and <code class="code">erase</code> (the latter returns the
|
||||
string).
|
||||
@ -207,18 +219,18 @@ erase(size_type __pos = 0, size_type __n = npos)
|
||||
Unfortunately, <code class="code">clear</code> is not implemented in this
|
||||
version, so you should use <code class="code">erase</code> (which is probably
|
||||
faster than <code class="code">operator=(charT*)</code>).
|
||||
</p></div><div class="section" title="Removal of ostream::form and istream::scan extensions"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.ostreamform_istreamscan"/>
|
||||
</p></div><div class="section" title="Removal of ostream::form and istream::scan extensions"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.ostreamform_istreamscan"></a>
|
||||
Removal of <code class="code">ostream::form</code> and <code class="code">istream::scan</code>
|
||||
extensions
|
||||
</h4></div></div></div><p>
|
||||
These are no longer supported. Please use stringstreams instead.
|
||||
</p></div><div class="section" title="No basic_stringbuf, basic_stringstream"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.stringstreams"/>No <code class="code">basic_stringbuf</code>, <code class="code">basic_stringstream</code></h4></div></div></div><p>
|
||||
</p></div><div class="section" title="No basic_stringbuf, basic_stringstream"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.stringstreams"></a>No <code class="code">basic_stringbuf</code>, <code class="code">basic_stringstream</code></h4></div></div></div><p>
|
||||
Although the ISO standard <code class="code">i/ostringstream</code>-classes are
|
||||
provided, (<code class="filename"><sstream></code>), for
|
||||
compatibility with older implementations the pre-ISO
|
||||
<code class="code">i/ostrstream</code> (<code class="filename"><strstream></code>) interface is also provided,
|
||||
with these caveats:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<code class="code">strstream</code> is considered to be deprecated
|
||||
</p></li><li class="listitem"><p>
|
||||
<code class="code">strstream</code> is limited to <code class="code">char</code>
|
||||
@ -300,14 +312,14 @@ any = temp;
|
||||
Another example of using stringstreams is in <a class="link" href="strings.html#strings.string.shrink" title="Shrink to Fit">this howto</a>.
|
||||
</p><p> There is additional information in the libstdc++-v2 info files, in
|
||||
particular <span class="quote">“<span class="quote">info iostream</span>”</span>.
|
||||
</p></div><div class="section" title="Little or no wide character support"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.wchar"/>Little or no wide character support</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Little or no wide character support"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.wchar"></a>Little or no wide character support</h4></div></div></div><p>
|
||||
Classes <code class="classname">wstring</code> and
|
||||
<code class="classname">char_traits<wchar_t></code> are
|
||||
not supported.
|
||||
</p></div><div class="section" title="No templatized iostreams"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.iostream_templates"/>No templatized iostreams</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="No templatized iostreams"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.iostream_templates"></a>No templatized iostreams</h4></div></div></div><p>
|
||||
Classes <code class="classname">wfilebuf</code> and
|
||||
<code class="classname">wstringstream</code> are not supported.
|
||||
</p></div><div class="section" title="Thread safety issues"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.second.thread_safety"/>Thread safety issues</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Thread safety issues"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.second.thread_safety"></a>Thread safety issues</h4></div></div></div><p>
|
||||
Earlier GCC releases had a somewhat different approach to
|
||||
threading configuration and proper compilation. Before GCC 3.0,
|
||||
configuration of the threading model was dictated by compiler
|
||||
@ -332,7 +344,7 @@ particular <span class="quote">“<span class="quote">info iostream</span>”</s
|
||||
against the gthr.h abstraction layer which is provided by gcc. A
|
||||
minor problem that pops up every so often is different
|
||||
interpretations of what "thread-safe" means for a
|
||||
library (not a general program). We currently use the <a class="link" href="http://www.sgi.com/tech/stl/thread_safety.html">same
|
||||
library (not a general program). We currently use the <a class="link" href="http://www.sgi.com/tech/stl/thread_safety.html" target="_top">same
|
||||
definition that SGI</a> uses for their STL subset. However,
|
||||
the exception for read-only containers only applies to the STL
|
||||
components. This definition is widely-used and something similar
|
||||
@ -343,12 +355,12 @@ particular <span class="quote">“<span class="quote">info iostream</span>”</s
|
||||
first relevant message in the thread; from there you can use
|
||||
"Thread Next" to move down the thread. This farm is in
|
||||
latest-to-oldest order.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
Our threading expert Loren gives a breakdown of <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2001-10/msg00024.html">the
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Our threading expert Loren gives a breakdown of <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2001-10/msg00024.html" target="_top">the
|
||||
six situations involving threads</a> for the 3.0
|
||||
release series.
|
||||
</p></li><li class="listitem"><p>
|
||||
<a class="link" href="http://gcc.gnu.org/ml/libstdc++/2001-05/msg00384.html">
|
||||
<a class="link" href="http://gcc.gnu.org/ml/libstdc++/2001-05/msg00384.html" target="_top">
|
||||
This message</a> inspired a recent updating of issues with
|
||||
threading and the SGI STL library. It also contains some
|
||||
example POSIX-multithreaded STL code.
|
||||
@ -358,14 +370,14 @@ particular <span class="quote">“<span class="quote">info iostream</span>”</s
|
||||
few people with access to the backup tapes have been too swamped
|
||||
with work to restore them. Many of the points have been
|
||||
superseded anyhow.)
|
||||
</p></div></div><div class="section" title="Third"><div class="titlepage"><div><div><h3 class="title"><a id="backwards.third"/>Third</h3></div></div></div><p> The third generation GNU C++ library is called libstdc++, or
|
||||
</p></div></div><div class="section" title="Third"><div class="titlepage"><div><div><h3 class="title"><a name="backwards.third"></a>Third</h3></div></div></div><p> The third generation GNU C++ library is called libstdc++, or
|
||||
libstdc++-v3.
|
||||
</p><p>The subset commonly known as the Standard Template Library
|
||||
(chapters 23 through 25, mostly) is adapted from the final release
|
||||
of the SGI STL (version 3.3), with extensive changes.
|
||||
</p><p>A more formal description of the V3 goals can be found in the
|
||||
official <a class="link" href="source_design_notes.html" title="Design Notes">design document</a>.
|
||||
</p><p>Portability notes and known implementation limitations are as follows.</p><div class="section" title="Pre-ISO headers moved to backwards or removed"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.third.headers"/>Pre-ISO headers moved to backwards or removed</h4></div></div></div><p> The pre-ISO C++ headers
|
||||
</p><p>Portability notes and known implementation limitations are as follows.</p><div class="section" title="Pre-ISO headers moved to backwards or removed"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.third.headers"></a>Pre-ISO headers moved to backwards or removed</h4></div></div></div><p> The pre-ISO C++ headers
|
||||
(<code class="filename"><iostream.h></code>,
|
||||
<code class="filename"><defalloc.h></code> etc.) are
|
||||
available, unlike previous libstdc++ versions, but inclusion
|
||||
@ -375,7 +387,7 @@ libstdc++-v3.
|
||||
<code class="code">std::</code> into the global namespace.
|
||||
</p><p>For those of you new to ISO C++ (welcome, time travelers!), no,
|
||||
that isn't a typo. Yes, the headers really have new names.
|
||||
Marshall Cline's C++ FAQ Lite has a good explanation in <a class="link" href="http://www.parashift.com/c++-faq-lite/coding-standards.html#faq-27.4">item
|
||||
Marshall Cline's C++ FAQ Lite has a good explanation in <a class="link" href="http://www.parashift.com/c++-faq-lite/coding-standards.html#faq-27.4" target="_top">item
|
||||
[27.4]</a>.
|
||||
</p><p> Some include adjustment may be required. What follows is an
|
||||
autoconf test that defines <code class="code">PRE_STDCXX_HEADERS</code> when they
|
||||
@ -438,7 +450,7 @@ like <code class="filename"><vector.h></code> can be replaced with <code c
|
||||
directive <code class="code">using namespace std;</code> can be put at the global
|
||||
scope. This should be enough to get this code compiling, assuming the
|
||||
other usage is correct.
|
||||
</p></div><div class="section" title="Extension headers hash_map, hash_set moved to ext or backwards"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.third.hash"/>Extension headers hash_map, hash_set moved to ext or backwards</h4></div></div></div><p>At this time most of the features of the SGI STL extension have been
|
||||
</p></div><div class="section" title="Extension headers hash_map, hash_set moved to ext or backwards"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.third.hash"></a>Extension headers hash_map, hash_set moved to ext or backwards</h4></div></div></div><p>At this time most of the features of the SGI STL extension have been
|
||||
replaced by standardized libraries.
|
||||
In particular, the <code class="classname">unordered_map</code> and
|
||||
<code class="classname">unordered_set</code> containers of TR1 and C++ 2011
|
||||
@ -512,7 +524,7 @@ AC_DEFUN([AC_HEADER_EXT_HASH_SET], [
|
||||
AC_DEFINE(HAVE_EXT_HASH_SET,,[Define if ext/hash_set is present. ])
|
||||
fi
|
||||
])
|
||||
</pre></div><div class="section" title="No ios::nocreate/ios::noreplace."><div class="titlepage"><div><div><h4 class="title"><a id="backwards.third.nocreate_noreplace"/>No <code class="code">ios::nocreate/ios::noreplace</code>.
|
||||
</pre></div><div class="section" title="No ios::nocreate/ios::noreplace."><div class="titlepage"><div><div><h4 class="title"><a name="backwards.third.nocreate_noreplace"></a>No <code class="code">ios::nocreate/ios::noreplace</code>.
|
||||
</h4></div></div></div><p> The existence of <code class="code">ios::nocreate</code> being used for
|
||||
input-streams has been confirmed, most probably because the author
|
||||
thought it would be more correct to specify nocreate explicitly. So
|
||||
@ -523,7 +535,7 @@ open the file for reading, check if it has been opened, and then
|
||||
decide whether you want to create/replace or not. To my knowledge,
|
||||
even older implementations support <code class="code">app</code>, <code class="code">ate</code>
|
||||
and <code class="code">trunc</code> (except for <code class="code">app</code> ?).
|
||||
</p></div><div class="section" title="No stream::attach(int fd)"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.third.streamattach"/>
|
||||
</p></div><div class="section" title="No stream::attach(int fd)"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.third.streamattach"></a>
|
||||
No <code class="code">stream::attach(int fd)</code>
|
||||
</h4></div></div></div><p>
|
||||
Phil Edwards writes: It was considered and rejected for the ISO
|
||||
@ -539,14 +551,14 @@ No <code class="code">stream::attach(int fd)</code>
|
||||
</p><p>
|
||||
An extension is available that implements this.
|
||||
<code class="filename"><ext/stdio_filebuf.h></code> contains a derived class called
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00074.html"><code class="code">__gnu_cxx::stdio_filebuf</code></a>.
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00074.html" target="_top"><code class="code">__gnu_cxx::stdio_filebuf</code></a>.
|
||||
This class can be constructed from a C <code class="code">FILE*</code> or a file
|
||||
descriptor, and provides the <code class="code">fd()</code> function.
|
||||
</p><p>
|
||||
For another example of this, refer to
|
||||
<a class="link" href="http://www.josuttis.com/cppcode/fdstream.html">fdstream example</a>
|
||||
<a class="link" href="http://www.josuttis.com/cppcode/fdstream.html" target="_top">fdstream example</a>
|
||||
by Nicolai Josuttis.
|
||||
</p></div><div class="section" title="Support for C++98 dialect."><div class="titlepage"><div><div><h4 class="title"><a id="backwards.third.support_cxx98"/>
|
||||
</p></div><div class="section" title="Support for C++98 dialect."><div class="titlepage"><div><div><h4 class="title"><a name="backwards.third.support_cxx98"></a>
|
||||
Support for C++98 dialect.
|
||||
</h4></div></div></div><p>Check for complete library coverage of the C++1998/2003 standard.
|
||||
</p><pre class="programlisting">
|
||||
@ -614,7 +626,7 @@ AC_DEFUN([AC_HEADER_STDCXX_98], [
|
||||
AC_DEFINE(STDCXX_98_HEADERS,,[Define if ISO C++ 1998 header files are present. ])
|
||||
fi
|
||||
])
|
||||
</pre></div><div class="section" title="Support for C++TR1 dialect."><div class="titlepage"><div><div><h4 class="title"><a id="backwards.third.support_tr1"/>
|
||||
</pre></div><div class="section" title="Support for C++TR1 dialect."><div class="titlepage"><div><div><h4 class="title"><a name="backwards.third.support_tr1"></a>
|
||||
Support for C++TR1 dialect.
|
||||
</h4></div></div></div><p>Check for library coverage of the TR1 standard.
|
||||
</p><pre class="programlisting">
|
||||
@ -691,7 +703,7 @@ AC_DEFUN([AC_HEADER_TR1_UNORDERED_SET], [
|
||||
AC_DEFINE(HAVE_TR1_UNORDERED_SET,,[Define if tr1/unordered_set is present. ])
|
||||
fi
|
||||
])
|
||||
</pre></div><div class="section" title="Support for C++11 dialect."><div class="titlepage"><div><div><h4 class="title"><a id="backwards.third.support_cxx11"/>
|
||||
</pre></div><div class="section" title="Support for C++11 dialect."><div class="titlepage"><div><div><h4 class="title"><a name="backwards.third.support_cxx11"></a>
|
||||
Support for C++11 dialect.
|
||||
</h4></div></div></div><p>Check for baseline language coverage in the compiler for the C++11 standard.
|
||||
</p><pre class="programlisting">
|
||||
@ -935,25 +947,25 @@ AC_DEFUN([AC_HEADER_UNORDERED_SET], [
|
||||
but the autoconf checks above could be extended to test for incomplete
|
||||
C++11 support with <code class="option">-std=c++0x</code> and
|
||||
<code class="option">-std=gnu++0x</code>.
|
||||
</p></div><div class="section" title="Container::iterator_type is not necessarily Container::value_type*"><div class="titlepage"><div><div><h4 class="title"><a id="backwards.third.iterator_type"/>
|
||||
</p></div><div class="section" title="Container::iterator_type is not necessarily Container::value_type*"><div class="titlepage"><div><div><h4 class="title"><a name="backwards.third.iterator_type"></a>
|
||||
<code class="code">Container::iterator_type</code> is not necessarily <code class="code">Container::value_type*</code>
|
||||
</h4></div></div></div><p>
|
||||
This is a change in behavior from older versions. Now, most
|
||||
<span class="type">iterator_type</span> typedefs in container classes are POD
|
||||
objects, not <span class="type">value_type</span> pointers.
|
||||
</p></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h3 class="title"><a id="backwards.biblio"/>Bibliography</h3></div></div></div><div class="biblioentry" title="Migrating to GCC 4.1"><a id="id574875"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.kegel.com/gcc/gcc4.html">
|
||||
</p></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h3 class="title"><a name="backwards.biblio"></a>Bibliography</h3></div></div></div><div class="biblioentry" title="Migrating to GCC 4.1"><a name="id688193"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.kegel.com/gcc/gcc4.html" target="_top">
|
||||
Migrating to GCC 4.1
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Dan</span> <span class="surname">Kegel</span>. </span></p></div><div class="biblioentry" title="Building the Whole Debian Archive with GCC 4.1: A Summary"><a id="id574898"/><p><span class="title"><em>
|
||||
<a class="link" href="http://lists.debian.org/debian-gcc/2006/03/msg00405.html">
|
||||
</i>. </span><span class="author"><span class="firstname">Dan</span> <span class="surname">Kegel</span>. </span></p></div><div class="biblioentry" title="Building the Whole Debian Archive with GCC 4.1: A Summary"><a name="id688216"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://lists.debian.org/debian-gcc/2006/03/msg00405.html" target="_top">
|
||||
Building the Whole Debian Archive with GCC 4.1: A Summary
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Martin</span> <span class="surname">Michlmayr</span>. </span></p></div><div class="biblioentry" title="Migration guide for GCC-3.2"><a id="id574922"/><p><span class="title"><em>
|
||||
<a class="link" href="http://annwm.lbl.gov/~leggett/Atlas/gcc-3.2.html">
|
||||
</i>. </span><span class="author"><span class="firstname">Martin</span> <span class="surname">Michlmayr</span>. </span></p></div><div class="biblioentry" title="Migration guide for GCC-3.2"><a name="id688240"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://annwm.lbl.gov/~leggett/Atlas/gcc-3.2.html" target="_top">
|
||||
Migration guide for GCC-3.2
|
||||
</a>
|
||||
</em>. </span></p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="api.html">Prev</a> </td><td align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td align="right"> <a accesskey="n" href="appendix_free.html">Next</a></td></tr><tr><td align="left" valign="top">API Evolution and Deprecation History </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Appendix C.
|
||||
</i>. </span></p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="api.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="appendix_free.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">API Evolution and Deprecation History </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Appendix C.
|
||||
Free Software Needs Free Documentation
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 21. The bitmap_allocator</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , allocator "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="bk01pt03ch20s05.html" title="Multiple Thread Example"/><link rel="next" href="bk01pt03ch21s02.html" title="Implementation"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 21. The bitmap_allocator</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch20s05.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 21. The bitmap_allocator</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
allocator
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="bk01pt03ch20s05.html" title="Multiple Thread Example"><link rel="next" href="bk01pt03ch21s02.html" title="Implementation"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 21. The bitmap_allocator</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch20s05.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="bk01pt03ch21s02.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 21. The bitmap_allocator"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.allocator.bitmap"/>Chapter 21. The bitmap_allocator</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="bitmap_allocator.html#allocator.bitmap.design">Design</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.free_list_store">Free List Store</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.super_block">Super Block</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.super_block_data">Super Block Data Layout</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.max_wasted">Maximum Wasted Percentage</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.allocate"><code class="function">allocate</code></a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.deallocate"><code class="function">deallocate</code></a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.questions">Questions</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.question.1">1</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.question.2">2</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.question.3">3</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.locality">Locality</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.grow_policy">Overhead and Grow Policy</a></span></dt></dl></dd></dl></div><p>
|
||||
</p><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title"><a id="allocator.bitmap.design"/>Design</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch21s02.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 21. The bitmap_allocator"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.allocator.bitmap"></a>Chapter 21. The bitmap_allocator</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="bitmap_allocator.html#allocator.bitmap.design">Design</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.free_list_store">Free List Store</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.super_block">Super Block</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.super_block_data">Super Block Data Layout</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.max_wasted">Maximum Wasted Percentage</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.allocate"><code class="function">allocate</code></a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.deallocate"><code class="function">deallocate</code></a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.questions">Questions</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.question.1">1</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.question.2">2</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.question.3">3</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.locality">Locality</a></span></dt><dt><span class="section"><a href="bk01pt03ch21s02.html#bitmap.impl.grow_policy">Overhead and Grow Policy</a></span></dt></dl></dd></dl></div><p>
|
||||
</p><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="allocator.bitmap.design"></a>Design</h2></div></div></div><p>
|
||||
As this name suggests, this allocator uses a bit-map to keep track
|
||||
of the used and unused memory locations for its book-keeping
|
||||
purposes.
|
||||
@ -30,4 +42,4 @@
|
||||
Mutex Protection around every allocation/deallocation. The state
|
||||
of the macro is picked up automatically from the gthr abstraction
|
||||
layer.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch20s05.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch21s02.html">Next</a></td></tr><tr><td align="left" valign="top">Multiple Thread Example </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Implementation</td></tr></table></div></body></html>
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</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch20s05.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch21s02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Multiple Thread Example </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Implementation</td></tr></table></div></body></html>
|
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|
||||
@ -1,10 +1,14 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Part II. Standard Contents</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="index.html" title="The GNU C++ Library Manual"/><link rel="prev" href="debug.html" title="Debugging Support"/><link rel="next" href="support.html" title="Chapter 4. Support"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Part II.
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Part II. Standard Contents</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="index.html" title="The GNU C++ Library Manual"><link rel="prev" href="debug.html" title="Debugging Support"><link rel="next" href="support.html" title="Chapter 4. Support"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Part II.
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Standard Contents
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="debug.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library Manual</th><td align="right"> <a accesskey="n" href="support.html">Next</a></td></tr></table><hr/></div><div class="part" title="Part II. Standard Contents"><div class="titlepage"><div><div><h1 class="title"><a id="manual.std"/>Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="debug.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library Manual</th><td width="20%" align="right"> <a accesskey="n" href="support.html">Next</a></td></tr></table><hr></div><div class="part" title="Part II. Standard Contents"><div class="titlepage"><div><div><h1 class="title"><a name="manual.std"></a>Part II.
|
||||
Standard Contents
|
||||
</h1></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="chapter"><a href="support.html">4.
|
||||
</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="chapter"><a href="support.html">4.
|
||||
Support
|
||||
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="support.html#std.support.types">Types</a></span></dt><dd><dl><dt><span class="section"><a href="support.html#std.support.types.fundamental">Fundamental Types</a></span></dt><dt><span class="section"><a href="support.html#std.support.types.numeric_limits">Numeric Properties</a></span></dt><dt><span class="section"><a href="support.html#std.support.types.null">NULL</a></span></dt></dl></dd><dt><span class="section"><a href="dynamic_memory.html">Dynamic Memory</a></span></dt><dt><span class="section"><a href="termination.html">Termination</a></span></dt><dd><dl><dt><span class="section"><a href="termination.html#support.termination.handlers">Termination Handlers</a></span></dt><dt><span class="section"><a href="termination.html#support.termination.verbose">Verbose Terminate Handler</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="diagnostics.html">5.
|
||||
@ -13,13 +17,13 @@
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions.api">API Reference</a></span></dt><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions.data">Adding Data to <code class="classname">exception</code></a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt02ch05s02.html">Concept Checking</a></span></dt></dl></dd><dt><span class="chapter"><a href="utilities.html">6.
|
||||
Utilities
|
||||
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="utilities.html#std.util.functors">Functors</a></span></dt><dt><span class="section"><a href="pairs.html">Pairs</a></span></dt><dt><span class="section"><a href="memory.html">Memory</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#std.util.memory.allocator">Allocators</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#allocator.req">Requirements</a></span></dt><dt><span class="section"><a href="memory.html#allocator.design_issues">Design Issues</a></span></dt><dt><span class="section"><a href="memory.html#allocator.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#id496148">Interface Design</a></span></dt><dt><span class="section"><a href="memory.html#id496177">Selecting Default Allocation Policy</a></span></dt><dt><span class="section"><a href="memory.html#id496288">Disabling Memory Caching</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#allocator.using">Using a Specific Allocator</a></span></dt><dt><span class="section"><a href="memory.html#allocator.custom">Custom Allocators</a></span></dt><dt><span class="section"><a href="memory.html#allocator.ext">Extension Allocators</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#std.util.memory.auto_ptr">auto_ptr</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#auto_ptr.limitations">Limitations</a></span></dt><dt><span class="section"><a href="memory.html#auto_ptr.using">Use in Containers</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#std.util.memory.shared_ptr">shared_ptr</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#shared_ptr.req">Requirements</a></span></dt><dt><span class="section"><a href="memory.html#shared_ptr.design_issues">Design Issues</a></span></dt><dt><span class="section"><a href="memory.html#shared_ptr.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#id497294">Class Hierarchy</a></span></dt><dt><span class="section"><a href="memory.html#id497482">Thread Safety</a></span></dt><dt><span class="section"><a href="memory.html#id497543">Selecting Lock Policy</a></span></dt><dt><span class="section"><a href="memory.html#id497665">Related functions and classes</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#shared_ptr.using">Use</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#id510115">Examples</a></span></dt><dt><span class="section"><a href="memory.html#id510145">Unresolved Issues</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#shared_ptr.ack">Acknowledgments</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="traits.html">Traits</a></span></dt></dl></dd><dt><span class="chapter"><a href="strings.html">7.
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="utilities.html#std.util.functors">Functors</a></span></dt><dt><span class="section"><a href="pairs.html">Pairs</a></span></dt><dt><span class="section"><a href="memory.html">Memory</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#std.util.memory.allocator">Allocators</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#allocator.req">Requirements</a></span></dt><dt><span class="section"><a href="memory.html#allocator.design_issues">Design Issues</a></span></dt><dt><span class="section"><a href="memory.html#allocator.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#id609466">Interface Design</a></span></dt><dt><span class="section"><a href="memory.html#id609496">Selecting Default Allocation Policy</a></span></dt><dt><span class="section"><a href="memory.html#id609607">Disabling Memory Caching</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#allocator.using">Using a Specific Allocator</a></span></dt><dt><span class="section"><a href="memory.html#allocator.custom">Custom Allocators</a></span></dt><dt><span class="section"><a href="memory.html#allocator.ext">Extension Allocators</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#std.util.memory.auto_ptr">auto_ptr</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#auto_ptr.limitations">Limitations</a></span></dt><dt><span class="section"><a href="memory.html#auto_ptr.using">Use in Containers</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#std.util.memory.shared_ptr">shared_ptr</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#shared_ptr.req">Requirements</a></span></dt><dt><span class="section"><a href="memory.html#shared_ptr.design_issues">Design Issues</a></span></dt><dt><span class="section"><a href="memory.html#shared_ptr.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#id610613">Class Hierarchy</a></span></dt><dt><span class="section"><a href="memory.html#id610801">Thread Safety</a></span></dt><dt><span class="section"><a href="memory.html#id610862">Selecting Lock Policy</a></span></dt><dt><span class="section"><a href="memory.html#id610983">Related functions and classes</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#shared_ptr.using">Use</a></span></dt><dd><dl><dt><span class="section"><a href="memory.html#id623434">Examples</a></span></dt><dt><span class="section"><a href="memory.html#id623464">Unresolved Issues</a></span></dt></dl></dd><dt><span class="section"><a href="memory.html#shared_ptr.ack">Acknowledgments</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="traits.html">Traits</a></span></dt></dl></dd><dt><span class="chapter"><a href="strings.html">7.
|
||||
Strings
|
||||
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="strings.html#std.strings.string">String Classes</a></span></dt><dd><dl><dt><span class="section"><a href="strings.html#strings.string.simple">Simple Transformations</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.case">Case Sensitivity</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.character_types">Arbitrary Character Types</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.token">Tokenizing</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.shrink">Shrink to Fit</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.Cstring">CString (MFC)</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="localization.html">8.
|
||||
Localization
|
||||
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#std.localization.locales">Locales</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#std.localization.locales.locale">locale</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#locales.locale.req">Requirements</a></span></dt><dt><span class="section"><a href="localization.html#locales.locale.design">Design</a></span></dt><dt><span class="section"><a href="localization.html#locales.locale.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#locale.impl.c">Interacting with "C" locales</a></span></dt></dl></dd><dt><span class="section"><a href="localization.html#locales.locale.future">Future</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="facets.html">Facets</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#std.localization.facet.ctype">ctype</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.ctype.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#id511845">Specializations</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.ctype.future">Future</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#std.localization.facet.codecvt">codecvt</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.codecvt.req">Requirements</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.design">Design</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#codecvt.design.wchar_t_size"><span class="type">wchar_t</span> Size</a></span></dt><dt><span class="section"><a href="facets.html#codecvt.design.unicode">Support for Unicode</a></span></dt><dt><span class="section"><a href="facets.html#codecvt.design.issues">Other Issues</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.codecvt.impl">Implementation</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.use">Use</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.future">Future</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#manual.localization.facet.messages">messages</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.messages.req">Requirements</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.design">Design</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#messages.impl.models">Models</a></span></dt><dt><span class="section"><a href="facets.html#messages.impl.gnu">The GNU Model</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.messages.use">Use</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.future">Future</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="chapter"><a href="containers.html">9.
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#std.localization.locales">Locales</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#std.localization.locales.locale">locale</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#locales.locale.req">Requirements</a></span></dt><dt><span class="section"><a href="localization.html#locales.locale.design">Design</a></span></dt><dt><span class="section"><a href="localization.html#locales.locale.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#locale.impl.c">Interacting with "C" locales</a></span></dt></dl></dd><dt><span class="section"><a href="localization.html#locales.locale.future">Future</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="facets.html">Facets</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#std.localization.facet.ctype">ctype</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.ctype.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#id625164">Specializations</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.ctype.future">Future</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#std.localization.facet.codecvt">codecvt</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.codecvt.req">Requirements</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.design">Design</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#codecvt.design.wchar_t_size"><span class="type">wchar_t</span> Size</a></span></dt><dt><span class="section"><a href="facets.html#codecvt.design.unicode">Support for Unicode</a></span></dt><dt><span class="section"><a href="facets.html#codecvt.design.issues">Other Issues</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.codecvt.impl">Implementation</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.use">Use</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.future">Future</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#manual.localization.facet.messages">messages</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.messages.req">Requirements</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.design">Design</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#messages.impl.models">Models</a></span></dt><dt><span class="section"><a href="facets.html#messages.impl.gnu">The GNU Model</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.messages.use">Use</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.future">Future</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="chapter"><a href="containers.html">9.
|
||||
Containers
|
||||
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#std.containers.sequences">Sequences</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#containers.sequences.list">list</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#sequences.list.size">list::size() is O(n)</a></span></dt></dl></dd><dt><span class="section"><a href="containers.html#containers.sequences.vector">vector</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#sequences.vector.management">Space Overhead Management</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="associative.html">Associative</a></span></dt><dd><dl><dt><span class="section"><a href="associative.html#containers.associative.insert_hints">Insertion Hints</a></span></dt><dt><span class="section"><a href="associative.html#containers.associative.bitset">bitset</a></span></dt><dd><dl><dt><span class="section"><a href="associative.html#associative.bitset.size_variable">Size Variable</a></span></dt><dt><span class="section"><a href="associative.html#associative.bitset.type_string">Type String</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="containers_and_c.html">Interacting with C</a></span></dt><dd><dl><dt><span class="section"><a href="containers_and_c.html#containers.c.vs_array">Containers vs. Arrays</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="iterators.html">10.
|
||||
@ -40,7 +44,7 @@
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="atomics.html#std.atomics.api">API Reference</a></span></dt></dl></dd><dt><span class="chapter"><a href="concurrency.html">15.
|
||||
Concurrency
|
||||
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="concurrency.html#std.concurrency.api">API Reference</a></span></dt></dl></dd></dl></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="debug.html">Prev</a> </td><td align="center"><a accesskey="u" href="index.html">Up</a></td><td align="right"> <a accesskey="n" href="support.html">Next</a></td></tr><tr><td align="left" valign="top">Debugging Support </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 4.
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="concurrency.html#std.concurrency.api">API Reference</a></span></dt></dl></dd></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="debug.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="index.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="support.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Debugging Support </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 4.
|
||||
Support
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Concept Checking</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="diagnostics.html" title="Chapter 5. Diagnostics"/><link rel="prev" href="diagnostics.html" title="Chapter 5. Diagnostics"/><link rel="next" href="utilities.html" title="Chapter 6. Utilities"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Concept Checking</th></tr><tr><td align="left"><a accesskey="p" href="diagnostics.html">Prev</a> </td><th width="60%" align="center">Chapter 5.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Concept Checking</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
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,
|
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library
|
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"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="diagnostics.html" title="Chapter 5. Diagnostics"><link rel="prev" href="diagnostics.html" title="Chapter 5. Diagnostics"><link rel="next" href="utilities.html" title="Chapter 6. Utilities"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Concept Checking</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="diagnostics.html">Prev</a> </td><th width="60%" align="center">Chapter 5.
|
||||
Diagnostics
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="utilities.html">Next</a></td></tr></table><hr/></div><div class="section" title="Concept Checking"><div class="titlepage"><div><div><h2 class="title"><a id="std.diagnostics.concept_checking"/>Concept Checking</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="utilities.html">Next</a></td></tr></table><hr></div><div class="section" title="Concept Checking"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.diagnostics.concept_checking"></a>Concept Checking</h2></div></div></div><p>
|
||||
In 1999, SGI added <span class="quote">“<span class="quote">concept checkers</span>”</span> to their
|
||||
implementation of the STL: code which checked the template
|
||||
parameters of instantiated pieces of the STL, in order to insure
|
||||
@ -21,7 +29,7 @@
|
||||
The primary author of the checking code, Jeremy Siek, had already
|
||||
started work on a replacement implementation. The new code was
|
||||
formally reviewed and accepted into
|
||||
<a class="link" href="http://www.boost.org/libs/concept_check/concept_check.htm">the
|
||||
<a class="link" href="http://www.boost.org/libs/concept_check/concept_check.htm" target="_top">the
|
||||
Boost libraries</a>, and we are pleased to incorporate it into the
|
||||
GNU C++ library.
|
||||
</p><p>
|
||||
@ -41,10 +49,10 @@
|
||||
for example template argument types may need to be complete when used in
|
||||
a template definition, rather than at the point of instantiation.
|
||||
There are no plans to address these shortcomings.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="diagnostics.html">Prev</a> </td><td align="center"><a accesskey="u" href="diagnostics.html">Up</a></td><td align="right"> <a accesskey="n" href="utilities.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 5.
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="diagnostics.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="diagnostics.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="utilities.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 5.
|
||||
Diagnostics
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 6.
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 6.
|
||||
Utilities
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,20 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Semantics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , debug "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="debug_mode.html" title="Chapter 17. Debug Mode"/><link rel="prev" href="debug_mode.html" title="Chapter 17. Debug Mode"/><link rel="next" href="bk01pt03ch17s03.html" title="Using"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Semantics</th></tr><tr><td align="left"><a accesskey="p" href="debug_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 17. Debug Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch17s03.html">Next</a></td></tr></table><hr/></div><div class="section" title="Semantics"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.debug_mode.semantics"/>Semantics</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Semantics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
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C++
|
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,
|
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library
|
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,
|
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debug
|
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"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
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library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
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,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="debug_mode.html" title="Chapter 17. Debug Mode"><link rel="prev" href="debug_mode.html" title="Chapter 17. Debug Mode"><link rel="next" href="bk01pt03ch17s03.html" title="Using"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Semantics</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="debug_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 17. Debug Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch17s03.html">Next</a></td></tr></table><hr></div><div class="section" title="Semantics"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.debug_mode.semantics"></a>Semantics</h2></div></div></div><p>
|
||||
</p><p>A program that uses the C++ standard library correctly
|
||||
will maintain the same semantics under debug mode as it had with
|
||||
the normal (release) library. All functional and exception-handling
|
||||
@ -36,7 +50,7 @@
|
||||
(N.B. In GCC 3.4.x and 4.0.0, due to a bug,
|
||||
<code class="code">-D_GLIBXX_DEBUG_PEDANTIC</code> was also needed. The problem has
|
||||
been fixed in GCC 4.0.1 and later versions.) </p><p>The following library components provide extra debugging
|
||||
capabilities in debug mode:</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="code">std::basic_string</code> (no safe iterators and see note below)</p></li><li class="listitem"><p><code class="code">std::bitset</code></p></li><li class="listitem"><p><code class="code">std::deque</code></p></li><li class="listitem"><p><code class="code">std::list</code></p></li><li class="listitem"><p><code class="code">std::map</code></p></li><li class="listitem"><p><code class="code">std::multimap</code></p></li><li class="listitem"><p><code class="code">std::multiset</code></p></li><li class="listitem"><p><code class="code">std::set</code></p></li><li class="listitem"><p><code class="code">std::vector</code></p></li><li class="listitem"><p><code class="code">std::unordered_map</code></p></li><li class="listitem"><p><code class="code">std::unordered_multimap</code></p></li><li class="listitem"><p><code class="code">std::unordered_set</code></p></li><li class="listitem"><p><code class="code">std::unordered_multiset</code></p></li></ul></div><p>N.B. although there are precondition checks for some string operations,
|
||||
capabilities in debug mode:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">std::basic_string</code> (no safe iterators and see note below)</p></li><li class="listitem"><p><code class="code">std::bitset</code></p></li><li class="listitem"><p><code class="code">std::deque</code></p></li><li class="listitem"><p><code class="code">std::list</code></p></li><li class="listitem"><p><code class="code">std::map</code></p></li><li class="listitem"><p><code class="code">std::multimap</code></p></li><li class="listitem"><p><code class="code">std::multiset</code></p></li><li class="listitem"><p><code class="code">std::set</code></p></li><li class="listitem"><p><code class="code">std::vector</code></p></li><li class="listitem"><p><code class="code">std::unordered_map</code></p></li><li class="listitem"><p><code class="code">std::unordered_multimap</code></p></li><li class="listitem"><p><code class="code">std::unordered_set</code></p></li><li class="listitem"><p><code class="code">std::unordered_multiset</code></p></li></ul></div><p>N.B. although there are precondition checks for some string operations,
|
||||
e.g. <code class="code">operator[]</code>,
|
||||
they will not always be run when using the <code class="code">char</code> and
|
||||
<code class="code">wchar_t</code> specialisations (<code class="code">std::string</code> and
|
||||
@ -52,4 +66,4 @@ with the debug-mode checks included, but this is unsupported and not
|
||||
guaranteed to work. For full debug-mode support you can use the
|
||||
<code class="code">__gnu_debug::basic_string</code> debugging container directly,
|
||||
which always works correctly.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="debug_mode.html">Prev</a> </td><td align="center"><a accesskey="u" href="debug_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch17s03.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 17. Debug Mode </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Using</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="debug_mode.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="debug_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch17s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 17. Debug Mode </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Using</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,7 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Using</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , debug "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="debug_mode.html" title="Chapter 17. Debug Mode"/><link rel="prev" href="bk01pt03ch17s02.html" title="Semantics"/><link rel="next" href="bk01pt03ch17s04.html" title="Design"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Using</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch17s02.html">Prev</a> </td><th width="60%" align="center">Chapter 17. Debug Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch17s04.html">Next</a></td></tr></table><hr/></div><div class="section" title="Using"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.debug_mode.using"/>Using</h2></div></div></div><p>
|
||||
</p><div class="section" title="Using the Debug Mode"><div class="titlepage"><div><div><h3 class="title"><a id="debug_mode.using.mode"/>Using the Debug Mode</h3></div></div></div><p>To use the libstdc++ debug mode, compile your application with the
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Using</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
library
|
||||
,
|
||||
debug
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="debug_mode.html" title="Chapter 17. Debug Mode"><link rel="prev" href="bk01pt03ch17s02.html" title="Semantics"><link rel="next" href="bk01pt03ch17s04.html" title="Design"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Using</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch17s02.html">Prev</a> </td><th width="60%" align="center">Chapter 17. Debug Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch17s04.html">Next</a></td></tr></table><hr></div><div class="section" title="Using"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.debug_mode.using"></a>Using</h2></div></div></div><p>
|
||||
</p><div class="section" title="Using the Debug Mode"><div class="titlepage"><div><div><h3 class="title"><a name="debug_mode.using.mode"></a>Using the Debug Mode</h3></div></div></div><p>To use the libstdc++ debug mode, compile your application with the
|
||||
compiler flag <code class="code">-D_GLIBCXX_DEBUG</code>. Note that this flag
|
||||
changes the sizes and behavior of standard class templates such
|
||||
as <code class="code">std::vector</code>, and therefore you can only link code
|
||||
@ -10,7 +24,7 @@
|
||||
units.</p><p>By default, error messages are formatted to fit on lines of about
|
||||
78 characters. The environment variable
|
||||
<code class="code">GLIBCXX_DEBUG_MESSAGE_LENGTH</code> can be used to request a
|
||||
different length.</p></div><div class="section" title="Using a Specific Debug Container"><div class="titlepage"><div><div><h3 class="title"><a id="debug_mode.using.specific"/>Using a Specific Debug Container</h3></div></div></div><p>When it is not feasible to recompile your entire application, or
|
||||
different length.</p></div><div class="section" title="Using a Specific Debug Container"><div class="titlepage"><div><div><h3 class="title"><a name="debug_mode.using.specific"></a>Using a Specific Debug Container</h3></div></div></div><p>When it is not feasible to recompile your entire application, or
|
||||
only specific containers need checking, debugging containers are
|
||||
available as GNU extensions. These debugging containers are
|
||||
functionally equivalent to the standard drop-in containers used in
|
||||
@ -19,6 +33,6 @@
|
||||
mode or with debug mode. The
|
||||
following table provides the names and headers of the debugging
|
||||
containers:
|
||||
</p><div class="table"><a id="id517707"/><p class="title"><strong>Table 17.1. Debugging Containers</strong></p><div class="table-contents"><table summary="Debugging Containers" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/><col style="text-align: left" class="c3"/><col style="text-align: left" class="c4"/></colgroup><thead><tr><th style="text-align: left">Container</th><th style="text-align: left">Header</th><th style="text-align: left">Debug container</th><th style="text-align: left">Debug header</th></tr></thead><tbody><tr><td style="text-align: left"><code class="classname">std::bitset</code></td><td style="text-align: left"><code class="filename">bitset</code></td><td style="text-align: left"><code class="classname">__gnu_debug::bitset</code></td><td style="text-align: left"><code class="filename"><debug/bitset></code></td></tr><tr><td style="text-align: left"><code class="classname">std::deque</code></td><td style="text-align: left"><code class="filename">deque</code></td><td style="text-align: left"><code class="classname">__gnu_debug::deque</code></td><td style="text-align: left"><code class="filename"><debug/deque></code></td></tr><tr><td style="text-align: left"><code class="classname">std::list</code></td><td style="text-align: left"><code class="filename">list</code></td><td style="text-align: left"><code class="classname">__gnu_debug::list</code></td><td style="text-align: left"><code class="filename"><debug/list></code></td></tr><tr><td style="text-align: left"><code class="classname">std::map</code></td><td style="text-align: left"><code class="filename">map</code></td><td style="text-align: left"><code class="classname">__gnu_debug::map</code></td><td style="text-align: left"><code class="filename"><debug/map></code></td></tr><tr><td style="text-align: left"><code class="classname">std::multimap</code></td><td style="text-align: left"><code class="filename">map</code></td><td style="text-align: left"><code class="classname">__gnu_debug::multimap</code></td><td style="text-align: left"><code class="filename"><debug/map></code></td></tr><tr><td style="text-align: left"><code class="classname">std::multiset</code></td><td style="text-align: left"><code class="filename">set</code></td><td style="text-align: left"><code class="classname">__gnu_debug::multiset</code></td><td style="text-align: left"><code class="filename"><debug/set></code></td></tr><tr><td style="text-align: left"><code class="classname">std::set</code></td><td style="text-align: left"><code class="filename">set</code></td><td style="text-align: left"><code class="classname">__gnu_debug::set</code></td><td style="text-align: left"><code class="filename"><debug/set></code></td></tr><tr><td style="text-align: left"><code class="classname">std::string</code></td><td style="text-align: left"><code class="filename">string</code></td><td style="text-align: left"><code class="classname">__gnu_debug::string</code></td><td style="text-align: left"><code class="filename"><debug/string></code></td></tr><tr><td style="text-align: left"><code class="classname">std::wstring</code></td><td style="text-align: left"><code class="filename">string</code></td><td style="text-align: left"><code class="classname">__gnu_debug::wstring</code></td><td style="text-align: left"><code class="filename"><debug/string></code></td></tr><tr><td style="text-align: left"><code class="classname">std::basic_string</code></td><td style="text-align: left"><code class="filename">string</code></td><td style="text-align: left"><code class="classname">__gnu_debug::basic_string</code></td><td style="text-align: left"><code class="filename"><debug/string></code></td></tr><tr><td style="text-align: left"><code class="classname">std::vector</code></td><td style="text-align: left"><code class="filename">vector</code></td><td style="text-align: left"><code class="classname">__gnu_debug::vector</code></td><td style="text-align: left"><code class="filename"><debug/vector></code></td></tr></tbody></table></div></div><br class="table-break"/><p>In addition, when compiling in C++11 mode, these additional
|
||||
</p><div class="table"><a name="id631025"></a><p class="title"><b>Table 17.1. Debugging Containers</b></p><div class="table-contents"><table summary="Debugging Containers" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"><col align="left" class="c3"><col align="left" class="c4"></colgroup><thead><tr><th align="left">Container</th><th align="left">Header</th><th align="left">Debug container</th><th align="left">Debug header</th></tr></thead><tbody><tr><td align="left"><code class="classname">std::bitset</code></td><td align="left"><code class="filename">bitset</code></td><td align="left"><code class="classname">__gnu_debug::bitset</code></td><td align="left"><code class="filename"><debug/bitset></code></td></tr><tr><td align="left"><code class="classname">std::deque</code></td><td align="left"><code class="filename">deque</code></td><td align="left"><code class="classname">__gnu_debug::deque</code></td><td align="left"><code class="filename"><debug/deque></code></td></tr><tr><td align="left"><code class="classname">std::list</code></td><td align="left"><code class="filename">list</code></td><td align="left"><code class="classname">__gnu_debug::list</code></td><td align="left"><code class="filename"><debug/list></code></td></tr><tr><td align="left"><code class="classname">std::map</code></td><td align="left"><code class="filename">map</code></td><td align="left"><code class="classname">__gnu_debug::map</code></td><td align="left"><code class="filename"><debug/map></code></td></tr><tr><td align="left"><code class="classname">std::multimap</code></td><td align="left"><code class="filename">map</code></td><td align="left"><code class="classname">__gnu_debug::multimap</code></td><td align="left"><code class="filename"><debug/map></code></td></tr><tr><td align="left"><code class="classname">std::multiset</code></td><td align="left"><code class="filename">set</code></td><td align="left"><code class="classname">__gnu_debug::multiset</code></td><td align="left"><code class="filename"><debug/set></code></td></tr><tr><td align="left"><code class="classname">std::set</code></td><td align="left"><code class="filename">set</code></td><td align="left"><code class="classname">__gnu_debug::set</code></td><td align="left"><code class="filename"><debug/set></code></td></tr><tr><td align="left"><code class="classname">std::string</code></td><td align="left"><code class="filename">string</code></td><td align="left"><code class="classname">__gnu_debug::string</code></td><td align="left"><code class="filename"><debug/string></code></td></tr><tr><td align="left"><code class="classname">std::wstring</code></td><td align="left"><code class="filename">string</code></td><td align="left"><code class="classname">__gnu_debug::wstring</code></td><td align="left"><code class="filename"><debug/string></code></td></tr><tr><td align="left"><code class="classname">std::basic_string</code></td><td align="left"><code class="filename">string</code></td><td align="left"><code class="classname">__gnu_debug::basic_string</code></td><td align="left"><code class="filename"><debug/string></code></td></tr><tr><td align="left"><code class="classname">std::vector</code></td><td align="left"><code class="filename">vector</code></td><td align="left"><code class="classname">__gnu_debug::vector</code></td><td align="left"><code class="filename"><debug/vector></code></td></tr></tbody></table></div></div><br class="table-break"><p>In addition, when compiling in C++11 mode, these additional
|
||||
containers have additional debug capability.
|
||||
</p><div class="table"><a id="id518081"/><p class="title"><strong>Table 17.2. Debugging Containers C++11</strong></p><div class="table-contents"><table summary="Debugging Containers C++11" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/><col style="text-align: left" class="c3"/><col style="text-align: left" class="c4"/></colgroup><thead><tr><th style="text-align: left">Container</th><th style="text-align: left">Header</th><th style="text-align: left">Debug container</th><th style="text-align: left">Debug header</th></tr></thead><tbody><tr><td style="text-align: left"><code class="classname">std::unordered_map</code></td><td style="text-align: left"><code class="filename">unordered_map</code></td><td style="text-align: left"><code class="classname">__gnu_debug::unordered_map</code></td><td style="text-align: left"><code class="filename"><debug/unordered_map></code></td></tr><tr><td style="text-align: left"><code class="classname">std::unordered_multimap</code></td><td style="text-align: left"><code class="filename">unordered_map</code></td><td style="text-align: left"><code class="classname">__gnu_debug::unordered_multimap</code></td><td style="text-align: left"><code class="filename"><debug/unordered_map></code></td></tr><tr><td style="text-align: left"><code class="classname">std::unordered_set</code></td><td style="text-align: left"><code class="filename">unordered_set</code></td><td style="text-align: left"><code class="classname">__gnu_debug::unordered_set</code></td><td style="text-align: left"><code class="filename"><debug/unordered_set></code></td></tr><tr><td style="text-align: left"><code class="classname">std::unordered_multiset</code></td><td style="text-align: left"><code class="filename">unordered_set</code></td><td style="text-align: left"><code class="classname">__gnu_debug::unordered_multiset</code></td><td style="text-align: left"><code class="filename"><debug/unordered_set></code></td></tr></tbody></table></div></div><br class="table-break"/></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch17s02.html">Prev</a> </td><td align="center"><a accesskey="u" href="debug_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch17s04.html">Next</a></td></tr><tr><td align="left" valign="top">Semantics </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Design</td></tr></table></div></body></html>
|
||||
</p><div class="table"><a name="id631400"></a><p class="title"><b>Table 17.2. Debugging Containers C++11</b></p><div class="table-contents"><table summary="Debugging Containers C++11" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"><col align="left" class="c3"><col align="left" class="c4"></colgroup><thead><tr><th align="left">Container</th><th align="left">Header</th><th align="left">Debug container</th><th align="left">Debug header</th></tr></thead><tbody><tr><td align="left"><code class="classname">std::unordered_map</code></td><td align="left"><code class="filename">unordered_map</code></td><td align="left"><code class="classname">__gnu_debug::unordered_map</code></td><td align="left"><code class="filename"><debug/unordered_map></code></td></tr><tr><td align="left"><code class="classname">std::unordered_multimap</code></td><td align="left"><code class="filename">unordered_map</code></td><td align="left"><code class="classname">__gnu_debug::unordered_multimap</code></td><td align="left"><code class="filename"><debug/unordered_map></code></td></tr><tr><td align="left"><code class="classname">std::unordered_set</code></td><td align="left"><code class="filename">unordered_set</code></td><td align="left"><code class="classname">__gnu_debug::unordered_set</code></td><td align="left"><code class="filename"><debug/unordered_set></code></td></tr><tr><td align="left"><code class="classname">std::unordered_multiset</code></td><td align="left"><code class="filename">unordered_set</code></td><td align="left"><code class="classname">__gnu_debug::unordered_multiset</code></td><td align="left"><code class="filename"><debug/unordered_set></code></td></tr></tbody></table></div></div><br class="table-break"></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch17s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="debug_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch17s04.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Semantics </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Design</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,11 +1,25 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Design</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , debug "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="debug_mode.html" title="Chapter 17. Debug Mode"/><link rel="prev" href="bk01pt03ch17s03.html" title="Using"/><link rel="next" href="parallel_mode.html" title="Chapter 18. Parallel Mode"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch17s03.html">Prev</a> </td><th width="60%" align="center">Chapter 17. Debug Mode</th><td align="right"> <a accesskey="n" href="parallel_mode.html">Next</a></td></tr></table><hr/></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.debug_mode.design"/>Design</h2></div></div></div><p>
|
||||
</p><div class="section" title="Goals"><div class="titlepage"><div><div><h3 class="title"><a id="debug_mode.design.goals"/>Goals</h3></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Design</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
library
|
||||
,
|
||||
debug
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="debug_mode.html" title="Chapter 17. Debug Mode"><link rel="prev" href="bk01pt03ch17s03.html" title="Using"><link rel="next" href="parallel_mode.html" title="Chapter 18. Parallel Mode"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch17s03.html">Prev</a> </td><th width="60%" align="center">Chapter 17. Debug Mode</th><td width="20%" align="right"> <a accesskey="n" href="parallel_mode.html">Next</a></td></tr></table><hr></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.debug_mode.design"></a>Design</h2></div></div></div><p>
|
||||
</p><div class="section" title="Goals"><div class="titlepage"><div><div><h3 class="title"><a name="debug_mode.design.goals"></a>Goals</h3></div></div></div><p>
|
||||
</p><p> The libstdc++ debug mode replaces unsafe (but efficient) standard
|
||||
containers and iterators with semantically equivalent safe standard
|
||||
containers and iterators to aid in debugging user programs. The
|
||||
following goals directed the design of the libstdc++ debug mode:</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Correctness</em></span>: the libstdc++ debug mode must not change
|
||||
following goals directed the design of the libstdc++ debug mode:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Correctness</em></span>: the libstdc++ debug mode must not change
|
||||
the semantics of the standard library for all cases specified in
|
||||
the ANSI/ISO C++ standard. The essence of this constraint is that
|
||||
any valid C++ program should behave in the same manner regardless
|
||||
@ -39,7 +53,7 @@
|
||||
higher-numbered conformance levels are more usable (i.e., require
|
||||
less recompilation) but are more complicated to implement than
|
||||
the lower-numbered conformance levels.
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p><span class="emphasis"><em>Full recompilation</em></span>: The user must recompile his or
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p><span class="emphasis"><em>Full recompilation</em></span>: The user must recompile his or
|
||||
her entire application and all C++ libraries it depends on,
|
||||
including the C++ standard library that ships with the
|
||||
compiler. This must be done even if only a small part of the
|
||||
@ -89,10 +103,10 @@
|
||||
(performance regression) or allocating extra memory associated
|
||||
with each iterator with <code class="code">new</code> (changes the program
|
||||
semantics).</p></li></ol></div><p>
|
||||
</p></li></ul></div></div><div class="section" title="Methods"><div class="titlepage"><div><div><h3 class="title"><a id="debug_mode.design.methods"/>Methods</h3></div></div></div><p>
|
||||
</p></li></ul></div></div><div class="section" title="Methods"><div class="titlepage"><div><div><h3 class="title"><a name="debug_mode.design.methods"></a>Methods</h3></div></div></div><p>
|
||||
</p><p>This section provides an overall view of the design of the
|
||||
libstdc++ debug mode and details the relationship between design
|
||||
decisions and the stated design goals.</p><div class="section" title="The Wrapper Model"><div class="titlepage"><div><div><h4 class="title"><a id="debug_mode.design.methods.wrappers"/>The Wrapper Model</h4></div></div></div><p>The libstdc++ debug mode uses a wrapper model where the
|
||||
decisions and the stated design goals.</p><div class="section" title="The Wrapper Model"><div class="titlepage"><div><div><h4 class="title"><a name="debug_mode.design.methods.wrappers"></a>The Wrapper Model</h4></div></div></div><p>The libstdc++ debug mode uses a wrapper model where the
|
||||
debugging versions of library components (e.g., iterators and
|
||||
containers) form a layer on top of the release versions of the
|
||||
library components. The debugging components first verify that the
|
||||
@ -109,19 +123,19 @@
|
||||
their associated containers, which are necessary to detect certain
|
||||
types of standard library usage errors such as dereferencing
|
||||
past-the-end iterators or inserting into a container using an
|
||||
iterator from a different container.</p><div class="section" title="Safe Iterators"><div class="titlepage"><div><div><h5 class="title"><a id="debug_mode.design.methods.safe_iter"/>Safe Iterators</h5></div></div></div><p>Iterator wrappers provide a debugging layer over any iterator that
|
||||
iterator from a different container.</p><div class="section" title="Safe Iterators"><div class="titlepage"><div><div><h5 class="title"><a name="debug_mode.design.methods.safe_iter"></a>Safe Iterators</h5></div></div></div><p>Iterator wrappers provide a debugging layer over any iterator that
|
||||
is attached to a particular container, and will manage the
|
||||
information detailing the iterator's state (singular,
|
||||
dereferenceable, etc.) and tracking the container to which the
|
||||
iterator is attached. Because iterators have a well-defined, common
|
||||
interface the iterator wrapper is implemented with the iterator
|
||||
adaptor class template <code class="code">__gnu_debug::_Safe_iterator</code>,
|
||||
which takes two template parameters:</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="code">Iterator</code>: The underlying iterator type, which must
|
||||
which takes two template parameters:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">Iterator</code>: The underlying iterator type, which must
|
||||
be either the <code class="code">iterator</code> or <code class="code">const_iterator</code>
|
||||
typedef from the sequence type this iterator can reference.</p></li><li class="listitem"><p><code class="code">Sequence</code>: The type of sequence that this iterator
|
||||
references. This sequence must be a safe sequence (discussed below)
|
||||
whose <code class="code">iterator</code> or <code class="code">const_iterator</code> typedef
|
||||
is the type of the safe iterator.</p></li></ul></div></div><div class="section" title="Safe Sequences (Containers)"><div class="titlepage"><div><div><h5 class="title"><a id="debug_mode.design.methods.safe_seq"/>Safe Sequences (Containers)</h5></div></div></div><p>Container wrappers provide a debugging layer over a particular
|
||||
is the type of the safe iterator.</p></li></ul></div></div><div class="section" title="Safe Sequences (Containers)"><div class="titlepage"><div><div><h5 class="title"><a name="debug_mode.design.methods.safe_seq"></a>Safe Sequences (Containers)</h5></div></div></div><p>Container wrappers provide a debugging layer over a particular
|
||||
container type. Because containers vary greatly in the member
|
||||
functions they support and the semantics of those member functions
|
||||
(especially in the area of iterator invalidation), container
|
||||
@ -157,7 +171,7 @@ template<typename _Tp, typename _Allocator = allocator<_Tp>
|
||||
|
||||
// duplicate std::list interface with debugging semantics
|
||||
};
|
||||
</pre></div></div><div class="section" title="Precondition Checking"><div class="titlepage"><div><div><h4 class="title"><a id="debug_mode.design.methods.precond"/>Precondition Checking</h4></div></div></div><p>The debug mode operates primarily by checking the preconditions of
|
||||
</pre></div></div><div class="section" title="Precondition Checking"><div class="titlepage"><div><div><h4 class="title"><a name="debug_mode.design.methods.precond"></a>Precondition Checking</h4></div></div></div><p>The debug mode operates primarily by checking the preconditions of
|
||||
all standard library operations that it supports. Preconditions that
|
||||
are always checked (regardless of whether or not we are in debug
|
||||
mode) are checked via the <code class="code">__check_xxx</code> macros defined
|
||||
@ -184,7 +198,7 @@ template<typename _Tp, typename _Allocator = allocator<_Tp>
|
||||
cousin <code class="code">_GLIBCXX_DEBUG_PEDASSERT</code>, or the assertion
|
||||
check macro that supports more advance formulation of error
|
||||
messages, <code class="code">_GLIBCXX_DEBUG_VERIFY</code>. These macros are
|
||||
documented more thoroughly in the debug mode source code.</p></div><div class="section" title="Release- and debug-mode coexistence"><div class="titlepage"><div><div><h4 class="title"><a id="debug_mode.design.methods.coexistence"/>Release- and debug-mode coexistence</h4></div></div></div><p>The libstdc++ debug mode is the first debug mode we know of that
|
||||
documented more thoroughly in the debug mode source code.</p></div><div class="section" title="Release- and debug-mode coexistence"><div class="titlepage"><div><div><h4 class="title"><a name="debug_mode.design.methods.coexistence"></a>Release- and debug-mode coexistence</h4></div></div></div><p>The libstdc++ debug mode is the first debug mode we know of that
|
||||
is able to provide the "Per-use recompilation" (4) guarantee, that
|
||||
allows release-compiled and debug-compiled code to be linked and
|
||||
executed together without causing unpredictable behavior. This
|
||||
@ -194,13 +208,13 @@ template<typename _Tp, typename _Allocator = allocator<_Tp>
|
||||
environments by minimizing dependencies.</p><p>Achieving link- and run-time coexistence is not a trivial
|
||||
implementation task. To achieve this goal we required a small
|
||||
extension to the GNU C++ compiler (since incorporated into the C++11 language specification, described in the GCC Manual for the C++ language as
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Namespace-Association.html#Namespace-Association">namespace
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Namespace-Association.html#Namespace-Association" target="_top">namespace
|
||||
association</a>), and a complex organization of debug- and
|
||||
release-modes. The end result is that we have achieved per-use
|
||||
recompilation but have had to give up some checking of the
|
||||
<code class="code">std::basic_string</code> class template (namely, safe
|
||||
iterators).
|
||||
</p><div class="section" title="Compile-time coexistence of release- and debug-mode components"><div class="titlepage"><div><div><h5 class="title"><a id="methods.coexistence.compile"/>Compile-time coexistence of release- and debug-mode components</h5></div></div></div><p>Both the release-mode components and the debug-mode
|
||||
</p><div class="section" title="Compile-time coexistence of release- and debug-mode components"><div class="titlepage"><div><div><h5 class="title"><a name="methods.coexistence.compile"></a>Compile-time coexistence of release- and debug-mode components</h5></div></div></div><p>Both the release-mode components and the debug-mode
|
||||
components need to exist within a single translation unit so that
|
||||
the debug versions can wrap the release versions. However, only one
|
||||
of these components should be user-visible at any particular
|
||||
@ -254,7 +268,7 @@ namespace std
|
||||
// namespace __debug __attribute__ ((strong));
|
||||
inline namespace __debug { }
|
||||
}
|
||||
</pre></div><div class="section" title="Link- and run-time coexistence of release- and debug-mode components"><div class="titlepage"><div><div><h5 class="title"><a id="methods.coexistence.link"/>Link- and run-time coexistence of release- and
|
||||
</pre></div><div class="section" title="Link- and run-time coexistence of release- and debug-mode components"><div class="titlepage"><div><div><h5 class="title"><a name="methods.coexistence.link"></a>Link- and run-time coexistence of release- and
|
||||
debug-mode components</h5></div></div></div><p>Because each component has a distinct and separate release and
|
||||
debug implementation, there is no issue with link-time
|
||||
coexistence: the separate namespaces result in different mangled
|
||||
@ -301,7 +315,7 @@ test02()
|
||||
release-mode <code class="code">basic_string</code>? While the answer could be
|
||||
"both", and the difference hidden via renaming a la the
|
||||
debug/release containers, we must note two things about locale
|
||||
facets:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>They exist as shared state: one can create a facet in one
|
||||
facets:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>They exist as shared state: one can create a facet in one
|
||||
translation unit and access the facet via the same type name in a
|
||||
different translation unit. This means that we cannot have two
|
||||
different versions of locale facets, because the types would not be
|
||||
@ -316,10 +330,10 @@ test02()
|
||||
changes. The effect on users is expected to be minimal, as there are
|
||||
simple alternatives (e.g., <code class="code">__gnu_debug::basic_string</code>),
|
||||
and the usability benefit we gain from the ability to mix debug- and
|
||||
release-compiled translation units is enormous.</p></div><div class="section" title="Alternatives for Coexistence"><div class="titlepage"><div><div><h5 class="title"><a id="methods.coexistence.alt"/>Alternatives for Coexistence</h5></div></div></div><p>The coexistence scheme above was chosen over many alternatives,
|
||||
release-compiled translation units is enormous.</p></div><div class="section" title="Alternatives for Coexistence"><div class="titlepage"><div><div><h5 class="title"><a name="methods.coexistence.alt"></a>Alternatives for Coexistence</h5></div></div></div><p>The coexistence scheme above was chosen over many alternatives,
|
||||
including language-only solutions and solutions that also required
|
||||
extensions to the C++ front end. The following is a partial list of
|
||||
solutions, with justifications for our rejection of each.</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Completely separate debug/release libraries</em></span>: This is by
|
||||
solutions, with justifications for our rejection of each.</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Completely separate debug/release libraries</em></span>: This is by
|
||||
far the simplest implementation option, where we do not allow any
|
||||
coexistence of debug- and release-compiled translation units in a
|
||||
program. This solution has an extreme negative affect on usability,
|
||||
@ -353,7 +367,7 @@ test02()
|
||||
declarations disallow specialization. This method fails
|
||||
the <span class="emphasis"><em>correctness</em></span> criteria.</p></li><li class="listitem"><p><span class="emphasis"><em> Use implementation-specific properties of anonymous
|
||||
namespaces. </em></span>
|
||||
See <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2003-08/msg00004.html"> this post
|
||||
See <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2003-08/msg00004.html" target="_top"> this post
|
||||
</a>
|
||||
This method fails the <span class="emphasis"><em>correctness</em></span> criteria.</p></li><li class="listitem"><p><span class="emphasis"><em>Extension: allow reopening on namespaces</em></span>: This would
|
||||
allow the debug mode to effectively alias the
|
||||
@ -376,7 +390,7 @@ test02()
|
||||
functions taking no arguments in mixed-mode settings resulting in
|
||||
equivalent link names, <code class="code"> vector::push_back() </code> being
|
||||
one example.
|
||||
See <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2003-08/msg00177.html">link
|
||||
See <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2003-08/msg00177.html" target="_top">link
|
||||
name</a> </p></li></ul></div><p>Other options may exist for implementing the debug mode, many of
|
||||
which have probably been considered and others that may still be
|
||||
lurking. This list may be expanded over time to include other
|
||||
@ -388,17 +402,17 @@ test02()
|
||||
that breaks user specialization), and additional testcases will be
|
||||
added as we are able to identify other typical problem cases. These
|
||||
test cases will serve as a benchmark by which we can compare debug
|
||||
mode implementations.</p></div></div></div><div class="section" title="Other Implementations"><div class="titlepage"><div><div><h3 class="title"><a id="debug_mode.design.other"/>Other Implementations</h3></div></div></div><p>
|
||||
mode implementations.</p></div></div></div><div class="section" title="Other Implementations"><div class="titlepage"><div><div><h3 class="title"><a name="debug_mode.design.other"></a>Other Implementations</h3></div></div></div><p>
|
||||
</p><p> There are several existing implementations of debug modes for C++
|
||||
standard library implementations, although none of them directly
|
||||
supports debugging for programs using libstdc++. The existing
|
||||
implementations include:</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><a class="link" href="http://www.mathcs.sjsu.edu/faculty/horstman/safestl.html">SafeSTL</a>:
|
||||
implementations include:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a class="link" href="http://www.mathcs.sjsu.edu/faculty/horstman/safestl.html" target="_top">SafeSTL</a>:
|
||||
SafeSTL was the original debugging version of the Standard Template
|
||||
Library (STL), implemented by Cay S. Horstmann on top of the
|
||||
Hewlett-Packard STL. Though it inspired much work in this area, it
|
||||
has not been kept up-to-date for use with modern compilers or C++
|
||||
standard library implementations.</p></li><li class="listitem"><p><a class="link" href="http://www.stlport.org/">STLport</a>: STLport is a free
|
||||
implementation of the C++ standard library derived from the <a class="link" href="http://www.sgi.com/tech/stl/">SGI implementation</a>, and
|
||||
standard library implementations.</p></li><li class="listitem"><p><a class="link" href="http://www.stlport.org/" target="_top">STLport</a>: STLport is a free
|
||||
implementation of the C++ standard library derived from the <a class="link" href="http://www.sgi.com/tech/stl/" target="_top">SGI implementation</a>, and
|
||||
ported to many other platforms. It includes a debug mode that uses a
|
||||
wrapper model (that in some ways inspired the libstdc++ debug mode
|
||||
design), although at the time of this writing the debug mode is
|
||||
@ -409,4 +423,4 @@ test02()
|
||||
a full debug-mode implementation (including debugging for
|
||||
CodeWarrior extensions) and is easy to use, although it meets only
|
||||
the "Full recompilation" (1) recompilation
|
||||
guarantee.</p></li></ul></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch17s03.html">Prev</a> </td><td align="center"><a accesskey="u" href="debug_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="parallel_mode.html">Next</a></td></tr><tr><td align="left" valign="top">Using </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 18. Parallel Mode</td></tr></table></div></body></html>
|
||||
guarantee.</p></li></ul></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch17s03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="debug_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="parallel_mode.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Using </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 18. Parallel Mode</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,20 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Semantics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , parallel "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="parallel_mode.html" title="Chapter 18. Parallel Mode"/><link rel="prev" href="parallel_mode.html" title="Chapter 18. Parallel Mode"/><link rel="next" href="bk01pt03ch18s03.html" title="Using"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Semantics</th></tr><tr><td align="left"><a accesskey="p" href="parallel_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 18. Parallel Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch18s03.html">Next</a></td></tr></table><hr/></div><div class="section" title="Semantics"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.parallel_mode.semantics"/>Semantics</h2></div></div></div><p> The parallel mode STL algorithms are currently not exception-safe,
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Semantics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
library
|
||||
,
|
||||
parallel
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="parallel_mode.html" title="Chapter 18. Parallel Mode"><link rel="prev" href="parallel_mode.html" title="Chapter 18. Parallel Mode"><link rel="next" href="bk01pt03ch18s03.html" title="Using"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Semantics</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="parallel_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 18. Parallel Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch18s03.html">Next</a></td></tr></table><hr></div><div class="section" title="Semantics"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.parallel_mode.semantics"></a>Semantics</h2></div></div></div><p> The parallel mode STL algorithms are currently not exception-safe,
|
||||
i.e. user-defined functors must not throw exceptions.
|
||||
Also, the order of execution is not guaranteed for some functions, of course.
|
||||
Therefore, user-defined functors should not have any concurrent side effects.
|
||||
@ -8,4 +22,4 @@ Therefore, user-defined functors should not have any concurrent side effects.
|
||||
OpenMP parallel regions in concurrent threads,
|
||||
it is not possible to call parallel STL algorithm in
|
||||
concurrent threads, either.
|
||||
It might work with other compilers, though.</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="parallel_mode.html">Prev</a> </td><td align="center"><a accesskey="u" href="parallel_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch18s03.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 18. Parallel Mode </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Using</td></tr></table></div></body></html>
|
||||
It might work with other compilers, though.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="parallel_mode.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="parallel_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch18s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 18. Parallel Mode </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Using</td></tr></table></div></body></html>
|
||||
|
||||
File diff suppressed because one or more lines are too long
@ -1,7 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Design</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , parallel "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="parallel_mode.html" title="Chapter 18. Parallel Mode"/><link rel="prev" href="bk01pt03ch18s03.html" title="Using"/><link rel="next" href="bk01pt03ch18s05.html" title="Testing"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch18s03.html">Prev</a> </td><th width="60%" align="center">Chapter 18. Parallel Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch18s05.html">Next</a></td></tr></table><hr/></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.parallel_mode.design"/>Design</h2></div></div></div><p>
|
||||
</p><div class="section" title="Interface Basics"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.intro"/>Interface Basics</h3></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Design</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
library
|
||||
,
|
||||
parallel
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="parallel_mode.html" title="Chapter 18. Parallel Mode"><link rel="prev" href="bk01pt03ch18s03.html" title="Using"><link rel="next" href="bk01pt03ch18s05.html" title="Testing"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch18s03.html">Prev</a> </td><th width="60%" align="center">Chapter 18. Parallel Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch18s05.html">Next</a></td></tr></table><hr></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.parallel_mode.design"></a>Design</h2></div></div></div><p>
|
||||
</p><div class="section" title="Interface Basics"><div class="titlepage"><div><div><h3 class="title"><a name="parallel_mode.design.intro"></a>Interface Basics</h3></div></div></div><p>
|
||||
All parallel algorithms are intended to have signatures that are
|
||||
equivalent to the ISO C++ algorithms replaced. For instance, the
|
||||
<code class="function">std::adjacent_find</code> function is declared as:
|
||||
@ -36,13 +50,13 @@ function, if no parallel functions are deemed worthy), based on either
|
||||
compile-time or run-time conditions.
|
||||
</p><p> The available signature options are specific for the different
|
||||
algorithms/algorithm classes.</p><p> The general view of overloads for the parallel algorithms look like this:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>ISO C++ signature</p></li><li class="listitem"><p>ISO C++ signature + sequential_tag argument</p></li><li class="listitem"><p>ISO C++ signature + algorithm-specific tag type
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>ISO C++ signature</p></li><li class="listitem"><p>ISO C++ signature + sequential_tag argument</p></li><li class="listitem"><p>ISO C++ signature + algorithm-specific tag type
|
||||
(several signatures)</p></li></ul></div><p> Please note that the implementation may use additional functions
|
||||
(designated with the <code class="code">_switch</code> suffix) to dispatch from the
|
||||
ISO C++ signature to the correct parallel version. Also, some of the
|
||||
algorithms do not have support for run-time conditions, so the last
|
||||
overload is therefore missing.
|
||||
</p></div><div class="section" title="Configuration and Tuning"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.tuning"/>Configuration and Tuning</h3></div></div></div><div class="section" title="Setting up the OpenMP Environment"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.omp"/>Setting up the OpenMP Environment</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Configuration and Tuning"><div class="titlepage"><div><div><h3 class="title"><a name="parallel_mode.design.tuning"></a>Configuration and Tuning</h3></div></div></div><div class="section" title="Setting up the OpenMP Environment"><div class="titlepage"><div><div><h4 class="title"><a name="parallel_mode.design.tuning.omp"></a>Setting up the OpenMP Environment</h4></div></div></div><p>
|
||||
Several aspects of the overall runtime environment can be manipulated
|
||||
by standard OpenMP function calls.
|
||||
</p><p>
|
||||
@ -72,7 +86,7 @@ Other parts of the runtime environment able to be manipulated include
|
||||
nested parallelism (<code class="function">omp_set_nested</code>), schedule kind
|
||||
(<code class="function">omp_set_schedule</code>), and others. See the OpenMP
|
||||
documentation for more information.
|
||||
</p></div><div class="section" title="Compile Time Switches"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.compile"/>Compile Time Switches</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Compile Time Switches"><div class="titlepage"><div><div><h4 class="title"><a name="parallel_mode.design.tuning.compile"></a>Compile Time Switches</h4></div></div></div><p>
|
||||
To force an algorithm to execute sequentially, even though parallelism
|
||||
is switched on in general via the macro <code class="constant">_GLIBCXX_PARALLEL</code>,
|
||||
add <code class="classname">__gnu_parallel::sequential_tag()</code> to the end
|
||||
@ -126,7 +140,7 @@ several additional choices, namely
|
||||
<code class="code">__gnu_parallel::balanced_quicksort_tag</code>.
|
||||
Multiway mergesort comes with the two splitting strategies for multi-way
|
||||
merging. The quicksort options cannot be used for <code class="code">stable_sort</code>.
|
||||
</p></div><div class="section" title="Run Time Settings and Defaults"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.settings"/>Run Time Settings and Defaults</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Run Time Settings and Defaults"><div class="titlepage"><div><div><h4 class="title"><a name="parallel_mode.design.tuning.settings"></a>Run Time Settings and Defaults</h4></div></div></div><p>
|
||||
The default parallelization strategy, the choice of specific algorithm
|
||||
strategy, the minimum threshold limits for individual parallel
|
||||
algorithms, and aspects of the underlying hardware can be specified as
|
||||
@ -175,7 +189,7 @@ i. e. it is a singleton. It can be read and written by calling
|
||||
<code class="code">__gnu_parallel::_Settings::set</code>, respectively.
|
||||
Please note that the first call return a const object, so direct manipulation
|
||||
is forbidden.
|
||||
See <a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01005.html">
|
||||
See <a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01005.html" target="_top">
|
||||
<code class="filename">settings.h</code></a>
|
||||
for complete details.
|
||||
</p><p>
|
||||
@ -194,7 +208,7 @@ int main()
|
||||
|
||||
return 0;
|
||||
}
|
||||
</pre></div></div><div class="section" title="Implementation Namespaces"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.impl"/>Implementation Namespaces</h3></div></div></div><p> One namespace contain versions of code that are always
|
||||
</pre></div></div><div class="section" title="Implementation Namespaces"><div class="titlepage"><div><div><h3 class="title"><a name="parallel_mode.design.impl"></a>Implementation Namespaces</h3></div></div></div><p> One namespace contain versions of code that are always
|
||||
explicitly sequential:
|
||||
<code class="code">__gnu_serial</code>.
|
||||
</p><p> Two namespaces contain the parallel mode:
|
||||
@ -210,4 +224,4 @@ __gnu_parallel</code>.
|
||||
</p><p> More information, and an organized index of types and functions
|
||||
related to the parallel mode on a per-namespace basis, can be found in
|
||||
the generated source documentation.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch18s03.html">Prev</a> </td><td align="center"><a accesskey="u" href="parallel_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch18s05.html">Next</a></td></tr><tr><td align="left" valign="top">Using </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Testing</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch18s03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="parallel_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch18s05.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Using </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Testing</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,20 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Testing</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , parallel "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="parallel_mode.html" title="Chapter 18. Parallel Mode"/><link rel="prev" href="bk01pt03ch18s04.html" title="Design"/><link rel="next" href="profile_mode.html" title="Chapter 19. Profile Mode"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Testing</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch18s04.html">Prev</a> </td><th width="60%" align="center">Chapter 18. Parallel Mode</th><td align="right"> <a accesskey="n" href="profile_mode.html">Next</a></td></tr></table><hr/></div><div class="section" title="Testing"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.parallel_mode.test"/>Testing</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Testing</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
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C++
|
||||
,
|
||||
library
|
||||
,
|
||||
parallel
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="parallel_mode.html" title="Chapter 18. Parallel Mode"><link rel="prev" href="bk01pt03ch18s04.html" title="Design"><link rel="next" href="profile_mode.html" title="Chapter 19. Profile Mode"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Testing</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch18s04.html">Prev</a> </td><th width="60%" align="center">Chapter 18. Parallel Mode</th><td width="20%" align="right"> <a accesskey="n" href="profile_mode.html">Next</a></td></tr></table><hr></div><div class="section" title="Testing"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.parallel_mode.test"></a>Testing</h2></div></div></div><p>
|
||||
Both the normal conformance and regression tests and the
|
||||
supplemental performance tests work.
|
||||
</p><p>
|
||||
@ -23,4 +37,4 @@
|
||||
additional software dependencies than the usual bare-boned text
|
||||
file, and can be generated by using the <code class="code">make
|
||||
doc-performance</code> rule in the testsuite's Makefile.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch18s04.html">Prev</a> </td><td align="center"><a accesskey="u" href="parallel_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="profile_mode.html">Next</a></td></tr><tr><td align="left" valign="top">Design </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 19. Profile Mode</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch18s04.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="parallel_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="profile_mode.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Design </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 19. Profile Mode</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,24 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Design</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , profile "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"/><link rel="prev" href="profile_mode.html" title="Chapter 19. Profile Mode"/><link rel="next" href="bk01pt03ch19s03.html" title="Extensions for Custom Containers"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design</th></tr><tr><td align="left"><a accesskey="p" href="profile_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch19s03.html">Next</a></td></tr></table><hr/></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.profile_mode.design"/>Design</h2></div></div></div><p>
|
||||
</p><div class="table"><a id="id521792"/><p class="title"><strong>Table 19.1. Profile Code Location</strong></p><div class="table-contents"><table summary="Profile Code Location" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/></colgroup><thead><tr><th style="text-align: left">Code Location</th><th style="text-align: left">Use</th></tr></thead><tbody><tr><td style="text-align: left"><code class="code">libstdc++-v3/include/std/*</code></td><td style="text-align: left">Preprocessor code to redirect to profile extension headers.</td></tr><tr><td style="text-align: left"><code class="code">libstdc++-v3/include/profile/*</code></td><td style="text-align: left">Profile extension public headers (map, vector, ...).</td></tr><tr><td style="text-align: left"><code class="code">libstdc++-v3/include/profile/impl/*</code></td><td style="text-align: left">Profile extension internals. Implementation files are
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Design</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
library
|
||||
,
|
||||
profile
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"><link rel="prev" href="profile_mode.html" title="Chapter 19. Profile Mode"><link rel="next" href="bk01pt03ch19s03.html" title="Extensions for Custom Containers"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="profile_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch19s03.html">Next</a></td></tr></table><hr></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.profile_mode.design"></a>Design</h2></div></div></div><p>
|
||||
</p><div class="table"><a name="id635111"></a><p class="title"><b>Table 19.1. Profile Code Location</b></p><div class="table-contents"><table summary="Profile Code Location" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"></colgroup><thead><tr><th align="left">Code Location</th><th align="left">Use</th></tr></thead><tbody><tr><td align="left"><code class="code">libstdc++-v3/include/std/*</code></td><td align="left">Preprocessor code to redirect to profile extension headers.</td></tr><tr><td align="left"><code class="code">libstdc++-v3/include/profile/*</code></td><td align="left">Profile extension public headers (map, vector, ...).</td></tr><tr><td align="left"><code class="code">libstdc++-v3/include/profile/impl/*</code></td><td align="left">Profile extension internals. Implementation files are
|
||||
only included from <code class="code">impl/profiler.h</code>, which is the only
|
||||
file included from the public headers.</td></tr></tbody></table></div></div><br class="table-break"/><p>
|
||||
</p><div class="section" title="Wrapper Model"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.design.wrapper"/>Wrapper Model</h3></div></div></div><p>
|
||||
file included from the public headers.</td></tr></tbody></table></div></div><br class="table-break"><p>
|
||||
</p><div class="section" title="Wrapper Model"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.design.wrapper"></a>Wrapper Model</h3></div></div></div><p>
|
||||
In order to get our instrumented library version included instead of the
|
||||
release one,
|
||||
we use the same wrapper model as the debug mode.
|
||||
@ -25,7 +39,7 @@
|
||||
Currently, mixing the profile mode with debug and parallel extensions is
|
||||
not allowed. Mixing them at compile time will result in preprocessor errors.
|
||||
Mixing them at link time is undefined.
|
||||
</p></div><div class="section" title="Instrumentation"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.design.instrumentation"/>Instrumentation</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Instrumentation"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.design.instrumentation"></a>Instrumentation</h3></div></div></div><p>
|
||||
Instead of instrumenting every public entry and exit point,
|
||||
we chose to add instrumentation on demand, as needed
|
||||
by individual diagnostics.
|
||||
@ -44,7 +58,7 @@
|
||||
</p><p>
|
||||
All the instrumentation on/off compile time switches live in
|
||||
<code class="code">include/profile/profiler.h</code>.
|
||||
</p></div><div class="section" title="Run Time Behavior"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.design.rtlib"/>Run Time Behavior</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Run Time Behavior"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.design.rtlib"></a>Run Time Behavior</h3></div></div></div><p>
|
||||
For practical reasons, the instrumentation library processes the trace
|
||||
partially
|
||||
rather than dumping it to disk in raw form. Each event is processed when
|
||||
@ -61,20 +75,20 @@
|
||||
call stack of its constructor location.
|
||||
</p><p>
|
||||
For details, see
|
||||
<a class="link" href="http://dx.doi.org/10.1109/CGO.2009.36">paper presented at
|
||||
<a class="link" href="http://dx.doi.org/10.1109/CGO.2009.36" target="_top">paper presented at
|
||||
CGO 2009</a>.
|
||||
</p></div><div class="section" title="Analysis and Diagnostics"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.design.analysis"/>Analysis and Diagnostics</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Analysis and Diagnostics"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.design.analysis"></a>Analysis and Diagnostics</h3></div></div></div><p>
|
||||
Final analysis takes place offline, and it is based entirely on the
|
||||
generated trace and debugging info in the application binary.
|
||||
See section Diagnostics for a list of analysis types that we plan to support.
|
||||
</p><p>
|
||||
The input to the analysis is a table indexed by profile type and call stack.
|
||||
The data type for each entry depends on the profile type.
|
||||
</p></div><div class="section" title="Cost Model"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.design.cost-model"/>Cost Model</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Cost Model"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.design.cost-model"></a>Cost Model</h3></div></div></div><p>
|
||||
While it is likely that cost models become complex as we get into
|
||||
more sophisticated analysis, we will try to follow a simple set of rules
|
||||
at the beginning.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Relative benefit estimation:</em></span>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Relative benefit estimation:</em></span>
|
||||
The idea is to estimate or measure the cost of all operations
|
||||
in the original scenario versus the scenario we advise to switch to.
|
||||
For instance, when advising to change a vector to a list, an occurrence
|
||||
@ -98,7 +112,7 @@
|
||||
For instance, when considering switching from <code class="code">set</code> to
|
||||
<code class="code">unordered_set</code>, if we detect use of operator <code class="code">++</code>,
|
||||
we will simply not issue the advice, since this could signal that the use
|
||||
care require a sorted container.</p></li></ul></div></div><div class="section" title="Reports"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.design.reports"/>Reports</h3></div></div></div><p>
|
||||
care require a sorted container.</p></li></ul></div></div><div class="section" title="Reports"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.design.reports"></a>Reports</h3></div></div></div><p>
|
||||
There are two types of reports. First, if we recognize a pattern for which
|
||||
we have a substitute that is likely to give better performance, we print
|
||||
the advice and estimated performance gain. The advice is usually associated
|
||||
@ -110,7 +124,7 @@ the top 10 <code class="code">multimap</code> locations
|
||||
which have the worst data locality in actual traversals.
|
||||
Although this does not offer a solution,
|
||||
it helps the user focus on the key problems and ignore the uninteresting ones.
|
||||
</p></div><div class="section" title="Testing"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.design.testing"/>Testing</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Testing"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.design.testing"></a>Testing</h3></div></div></div><p>
|
||||
First, we want to make sure we preserve the behavior of the release mode.
|
||||
You can just type <code class="code">"make check-profile"</code>, which
|
||||
builds and runs the whole test suite in profile mode.
|
||||
@ -119,4 +133,4 @@ it helps the user focus on the key problems and ignore the uninteresting ones.
|
||||
We created a <code class="code">profile</code> directory in the test suite.
|
||||
Each diagnostic must come with at least two tests, one for false positives
|
||||
and one for false negatives.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="profile_mode.html">Prev</a> </td><td align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch19s03.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 19. Profile Mode </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Extensions for Custom Containers</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="profile_mode.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch19s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 19. Profile Mode </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Extensions for Custom Containers</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,24 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Extensions for Custom Containers</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , profile "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"/><link rel="prev" href="bk01pt03ch19s02.html" title="Design"/><link rel="next" href="bk01pt03ch19s04.html" title="Empirical Cost Model"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Extensions for Custom Containers</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s02.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch19s04.html">Next</a></td></tr></table><hr/></div><div class="section" title="Extensions for Custom Containers"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.profile_mode.api"/>Extensions for Custom Containers</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Extensions for Custom Containers</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
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C++
|
||||
,
|
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library
|
||||
,
|
||||
profile
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"><link rel="prev" href="bk01pt03ch19s02.html" title="Design"><link rel="next" href="bk01pt03ch19s04.html" title="Empirical Cost Model"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Extensions for Custom Containers</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch19s02.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch19s04.html">Next</a></td></tr></table><hr></div><div class="section" title="Extensions for Custom Containers"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.profile_mode.api"></a>Extensions for Custom Containers</h2></div></div></div><p>
|
||||
Many large projects use their own data structures instead of the ones in the
|
||||
standard library. If these data structures are similar in functionality
|
||||
to the standard library, they can be instrumented with the same hooks
|
||||
that are used to instrument the standard library.
|
||||
The instrumentation API is exposed in file
|
||||
<code class="code">profiler.h</code> (look for "Instrumentation hooks").
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s02.html">Prev</a> </td><td align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch19s04.html">Next</a></td></tr><tr><td align="left" valign="top">Design </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Empirical Cost Model</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch19s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch19s04.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Design </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Empirical Cost Model</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,20 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Empirical Cost Model</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , profile "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"/><link rel="prev" href="bk01pt03ch19s03.html" title="Extensions for Custom Containers"/><link rel="next" href="bk01pt03ch19s05.html" title="Implementation Issues"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Empirical Cost Model</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s03.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch19s05.html">Next</a></td></tr></table><hr/></div><div class="section" title="Empirical Cost Model"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.profile_mode.cost_model"/>Empirical Cost Model</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Empirical Cost Model</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
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C++
|
||||
,
|
||||
library
|
||||
,
|
||||
profile
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"><link rel="prev" href="bk01pt03ch19s03.html" title="Extensions for Custom Containers"><link rel="next" href="bk01pt03ch19s05.html" title="Implementation Issues"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Empirical Cost Model</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch19s03.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch19s05.html">Next</a></td></tr></table><hr></div><div class="section" title="Empirical Cost Model"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.profile_mode.cost_model"></a>Empirical Cost Model</h2></div></div></div><p>
|
||||
Currently, the cost model uses formulas with predefined relative weights
|
||||
for alternative containers or container implementations. For instance,
|
||||
iterating through a vector is X times faster than iterating through a list.
|
||||
@ -15,4 +29,4 @@
|
||||
filled in either by hand or by an automated training mechanism.
|
||||
The analysis module will then use this database instead of the built in.
|
||||
generic parameters.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s03.html">Prev</a> </td><td align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch19s05.html">Next</a></td></tr><tr><td align="left" valign="top">Extensions for Custom Containers </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Implementation Issues</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch19s03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch19s05.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Extensions for Custom Containers </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Implementation Issues</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,20 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Implementation Issues</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , profile "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"/><link rel="prev" href="bk01pt03ch19s04.html" title="Empirical Cost Model"/><link rel="next" href="bk01pt03ch19s06.html" title="Developer Information"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation Issues</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s04.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch19s06.html">Next</a></td></tr></table><hr/></div><div class="section" title="Implementation Issues"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.profile_mode.implementation"/>Implementation Issues</h2></div></div></div><div class="section" title="Stack Traces"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.stack"/>Stack Traces</h3></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Implementation Issues</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
library
|
||||
,
|
||||
profile
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"><link rel="prev" href="bk01pt03ch19s04.html" title="Empirical Cost Model"><link rel="next" href="bk01pt03ch19s06.html" title="Developer Information"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation Issues</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch19s04.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch19s06.html">Next</a></td></tr></table><hr></div><div class="section" title="Implementation Issues"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.profile_mode.implementation"></a>Implementation Issues</h2></div></div></div><div class="section" title="Stack Traces"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.implementation.stack"></a>Stack Traces</h3></div></div></div><p>
|
||||
Accurate stack traces are needed during profiling since we group events by
|
||||
call context and dynamic instance. Without accurate traces, diagnostics
|
||||
may be hard to interpret. For instance, when giving advice to the user
|
||||
@ -11,24 +25,24 @@
|
||||
<code class="code">_GLIBCXX_PROFILE_STACK_DEPTH</code> can be set
|
||||
to 0 if you are willing to give up call context information, or to a small
|
||||
positive value to reduce run time overhead.
|
||||
</p></div><div class="section" title="Symbolization of Instruction Addresses"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.symbols"/>Symbolization of Instruction Addresses</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Symbolization of Instruction Addresses"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.implementation.symbols"></a>Symbolization of Instruction Addresses</h3></div></div></div><p>
|
||||
The profiling and analysis phases use only instruction addresses.
|
||||
An external utility such as addr2line is needed to postprocess the result.
|
||||
We do not plan to add symbolization support in the profile extension.
|
||||
This would require access to symbol tables, debug information tables,
|
||||
external programs or libraries and other system dependent information.
|
||||
</p></div><div class="section" title="Concurrency"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.concurrency"/>Concurrency</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Concurrency"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.implementation.concurrency"></a>Concurrency</h3></div></div></div><p>
|
||||
Our current model is simplistic, but precise.
|
||||
We cannot afford to approximate because some of our diagnostics require
|
||||
precise matching of operations to container instance and call context.
|
||||
During profiling, we keep a single information table per diagnostic.
|
||||
There is a single lock per information table.
|
||||
</p></div><div class="section" title="Using the Standard Library in the Instrumentation Implementation"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.stdlib-in-proflib"/>Using the Standard Library in the Instrumentation Implementation</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Using the Standard Library in the Instrumentation Implementation"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.implementation.stdlib-in-proflib"></a>Using the Standard Library in the Instrumentation Implementation</h3></div></div></div><p>
|
||||
As much as we would like to avoid uses of libstdc++ within our
|
||||
instrumentation library, containers such as unordered_map are very
|
||||
appealing. We plan to use them as long as they are named properly
|
||||
to avoid ambiguity.
|
||||
</p></div><div class="section" title="Malloc Hooks"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.malloc-hooks"/>Malloc Hooks</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Malloc Hooks"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.implementation.malloc-hooks"></a>Malloc Hooks</h3></div></div></div><p>
|
||||
User applications/libraries can provide malloc hooks.
|
||||
When the implementation of the malloc hooks uses stdlibc++, there can
|
||||
be an infinite cycle between the profile mode instrumentation and the
|
||||
@ -42,10 +56,10 @@
|
||||
uses non-recursive locks.
|
||||
XXX: A definitive solution to this problem would be for the profile extension
|
||||
to use a custom allocator internally, and perhaps not to use libstdc++.
|
||||
</p></div><div class="section" title="Construction and Destruction of Global Objects"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.construction-destruction"/>Construction and Destruction of Global Objects</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Construction and Destruction of Global Objects"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.implementation.construction-destruction"></a>Construction and Destruction of Global Objects</h3></div></div></div><p>
|
||||
The profiling library state is initialized at the first call to a profiling
|
||||
method. This allows us to record the construction of all global objects.
|
||||
However, we cannot do the same at destruction time. The trace is written
|
||||
by a function registered by <code class="code">atexit</code>, thus invoked by
|
||||
<code class="code">exit</code>.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s04.html">Prev</a> </td><td align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch19s06.html">Next</a></td></tr><tr><td align="left" valign="top">Empirical Cost Model </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Developer Information</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch19s04.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch19s06.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Empirical Cost Model </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Developer Information</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,20 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Developer Information</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , profile "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"/><link rel="prev" href="bk01pt03ch19s05.html" title="Implementation Issues"/><link rel="next" href="bk01pt03ch19s07.html" title="Diagnostics"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Developer Information</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s05.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch19s07.html">Next</a></td></tr></table><hr/></div><div class="section" title="Developer Information"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.profile_mode.developer"/>Developer Information</h2></div></div></div><div class="section" title="Big Picture"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.developer.bigpic"/>Big Picture</h3></div></div></div><p>The profile mode headers are included with
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Developer Information</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
library
|
||||
,
|
||||
profile
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"><link rel="prev" href="bk01pt03ch19s05.html" title="Implementation Issues"><link rel="next" href="bk01pt03ch19s07.html" title="Diagnostics"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Developer Information</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch19s05.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch19s07.html">Next</a></td></tr></table><hr></div><div class="section" title="Developer Information"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.profile_mode.developer"></a>Developer Information</h2></div></div></div><div class="section" title="Big Picture"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.developer.bigpic"></a>Big Picture</h3></div></div></div><p>The profile mode headers are included with
|
||||
<code class="code">-D_GLIBCXX_PROFILE</code> through preprocessor directives in
|
||||
<code class="code">include/std/*</code>.
|
||||
</p><p>Instrumented implementations are provided in
|
||||
@ -14,7 +28,7 @@
|
||||
must ensure (1) that the call is guarded against reentrance and
|
||||
(2) that the call can be turned off at compile time using a
|
||||
<code class="code">-D_GLIBCXX_PROFILE_...</code> compiler option.
|
||||
</p></div><div class="section" title="How To Add A Diagnostic"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.developer.howto"/>How To Add A Diagnostic</h3></div></div></div><p>Let's say the diagnostic name is "magic".
|
||||
</p></div><div class="section" title="How To Add A Diagnostic"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.developer.howto"></a>How To Add A Diagnostic</h3></div></div></div><p>Let's say the diagnostic name is "magic".
|
||||
</p><p>If you need to instrument a header not already under
|
||||
<code class="code">include/profile/*</code>, first edit the corresponding header
|
||||
under <code class="code">include/std/</code> and add a preprocessor directive such
|
||||
@ -42,7 +56,7 @@
|
||||
All names of methods in namespace <code class="code">__gnu_profile</code> called from
|
||||
<code class="code">profiler.h</code> must start with <code class="code">__trace_magic_</code>.
|
||||
</p><p>Add the implementation of the diagnostic.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Create new file <code class="code">include/profile/impl/profiler_magic.h</code>.
|
||||
</p></li><li class="listitem"><p>
|
||||
Define class <code class="code">__magic_info: public __object_info_base</code>.
|
||||
@ -65,4 +79,4 @@
|
||||
<code class="code">include/profile/impl/profiler_trace.h</code>. Use
|
||||
<code class="code">__trace_vector_to_list</code> as an example.
|
||||
</p><p>Add documentation in file <code class="code">doc/xml/manual/profile_mode.xml</code>.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s05.html">Prev</a> </td><td align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch19s07.html">Next</a></td></tr><tr><td align="left" valign="top">Implementation Issues </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Diagnostics</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch19s05.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch19s07.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Implementation Issues </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Diagnostics</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,20 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Diagnostics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , profile "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"/><link rel="prev" href="bk01pt03ch19s06.html" title="Developer Information"/><link rel="next" href="mt_allocator.html" title="Chapter 20. The mt_allocator"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Diagnostics</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s06.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td align="right"> <a accesskey="n" href="mt_allocator.html">Next</a></td></tr></table><hr/></div><div class="section" title="Diagnostics"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.profile_mode.diagnostics"/>Diagnostics</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Diagnostics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
library
|
||||
,
|
||||
profile
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode"><link rel="prev" href="bk01pt03ch19s06.html" title="Developer Information"><link rel="next" href="mt_allocator.html" title="Chapter 20. The mt_allocator"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Diagnostics</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch19s06.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="mt_allocator.html">Next</a></td></tr></table><hr></div><div class="section" title="Diagnostics"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.profile_mode.diagnostics"></a>Diagnostics</h2></div></div></div><p>
|
||||
The table below presents all the diagnostics we intend to implement.
|
||||
Each diagnostic has a corresponding compile time switch
|
||||
<code class="code">-D_GLIBCXX_PROFILE_<diagnostic></code>.
|
||||
@ -18,24 +32,24 @@
|
||||
A high accuracy means that the diagnostic is unlikely to be wrong.
|
||||
These grades are not perfect. They are just meant to guide users with
|
||||
specific needs or time budgets.
|
||||
</p><div class="table"><a id="id522674"/><p class="title"><strong>Table 19.2. Profile Diagnostics</strong></p><div class="table-contents"><table summary="Profile Diagnostics" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/><col style="text-align: left" class="c3"/><col style="text-align: left" class="c4"/><col style="text-align: left" class="c5"/><col style="text-align: left" class="c6"/><col style="text-align: left" class="c7"/></colgroup><thead><tr><th style="text-align: left">Group</th><th style="text-align: left">Flag</th><th style="text-align: left">Benefit</th><th style="text-align: left">Cost</th><th style="text-align: left">Freq.</th><th style="text-align: left">Implemented</th><td class="auto-generated"> </td></tr></thead><tbody><tr><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.containers" title="Containers">
|
||||
CONTAINERS</a></td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.hashtable_too_small" title="Hashtable Too Small">
|
||||
HASHTABLE_TOO_SMALL</a></td><td style="text-align: left">10</td><td style="text-align: left">1</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">yes</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.hashtable_too_large" title="Hashtable Too Large">
|
||||
HASHTABLE_TOO_LARGE</a></td><td style="text-align: left">5</td><td style="text-align: left">1</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">yes</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.inefficient_hash" title="Inefficient Hash">
|
||||
INEFFICIENT_HASH</a></td><td style="text-align: left">7</td><td style="text-align: left">3</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">yes</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.vector_too_small" title="Vector Too Small">
|
||||
VECTOR_TOO_SMALL</a></td><td style="text-align: left">8</td><td style="text-align: left">1</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">yes</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.vector_too_large" title="Vector Too Large">
|
||||
VECTOR_TOO_LARGE</a></td><td style="text-align: left">5</td><td style="text-align: left">1</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">yes</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.vector_to_hashtable" title="Vector to Hashtable">
|
||||
VECTOR_TO_HASHTABLE</a></td><td style="text-align: left">7</td><td style="text-align: left">7</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">no</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.hashtable_to_vector" title="Hashtable to Vector">
|
||||
HASHTABLE_TO_VECTOR</a></td><td style="text-align: left">7</td><td style="text-align: left">7</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">no</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.vector_to_list" title="Vector to List">
|
||||
VECTOR_TO_LIST</a></td><td style="text-align: left">8</td><td style="text-align: left">5</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">yes</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.list_to_vector" title="List to Vector">
|
||||
LIST_TO_VECTOR</a></td><td style="text-align: left">10</td><td style="text-align: left">5</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">no</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.assoc_ord_to_unord" title="Ordered to Unordered Associative Container">
|
||||
ORDERED_TO_UNORDERED</a></td><td style="text-align: left">10</td><td style="text-align: left">5</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">only map/unordered_map</td></tr><tr><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.algorithms" title="Algorithms">
|
||||
ALGORITHMS</a></td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.algorithms.sort" title="Sort Algorithm Performance">
|
||||
SORT</a></td><td style="text-align: left">7</td><td style="text-align: left">8</td><td style="text-align: left"> </td><td style="text-align: left">7</td><td style="text-align: left">no</td></tr><tr><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.locality" title="Data Locality">
|
||||
LOCALITY</a></td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.locality.sw_prefetch" title="Need Software Prefetch">
|
||||
SOFTWARE_PREFETCH</a></td><td style="text-align: left">8</td><td style="text-align: left">8</td><td style="text-align: left"> </td><td style="text-align: left">5</td><td style="text-align: left">no</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.locality.linked" title="Linked Structure Locality">
|
||||
RBTREE_LOCALITY</a></td><td style="text-align: left">4</td><td style="text-align: left">8</td><td style="text-align: left"> </td><td style="text-align: left">5</td><td style="text-align: left">no</td></tr><tr><td style="text-align: left"> </td><td style="text-align: left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.mthread.false_share" title="False Sharing">
|
||||
FALSE_SHARING</a></td><td style="text-align: left">8</td><td style="text-align: left">10</td><td style="text-align: left"> </td><td style="text-align: left">10</td><td style="text-align: left">no</td></tr></tbody></table></div></div><br class="table-break"/><div class="section" title="Diagnostic Template"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.analysis.template"/>Diagnostic Template</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p><div class="table"><a name="id635993"></a><p class="title"><b>Table 19.2. Profile Diagnostics</b></p><div class="table-contents"><table summary="Profile Diagnostics" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"><col align="left" class="c3"><col align="left" class="c4"><col align="left" class="c5"><col align="left" class="c6"><col align="left" class="c7"></colgroup><thead><tr><th align="left">Group</th><th align="left">Flag</th><th align="left">Benefit</th><th align="left">Cost</th><th align="left">Freq.</th><th align="left">Implemented</th><td class="auto-generated"> </td></tr></thead><tbody><tr><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.containers" title="Containers">
|
||||
CONTAINERS</a></td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.hashtable_too_small" title="Hashtable Too Small">
|
||||
HASHTABLE_TOO_SMALL</a></td><td align="left">10</td><td align="left">1</td><td align="left"> </td><td align="left">10</td><td align="left">yes</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.hashtable_too_large" title="Hashtable Too Large">
|
||||
HASHTABLE_TOO_LARGE</a></td><td align="left">5</td><td align="left">1</td><td align="left"> </td><td align="left">10</td><td align="left">yes</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.inefficient_hash" title="Inefficient Hash">
|
||||
INEFFICIENT_HASH</a></td><td align="left">7</td><td align="left">3</td><td align="left"> </td><td align="left">10</td><td align="left">yes</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.vector_too_small" title="Vector Too Small">
|
||||
VECTOR_TOO_SMALL</a></td><td align="left">8</td><td align="left">1</td><td align="left"> </td><td align="left">10</td><td align="left">yes</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.vector_too_large" title="Vector Too Large">
|
||||
VECTOR_TOO_LARGE</a></td><td align="left">5</td><td align="left">1</td><td align="left"> </td><td align="left">10</td><td align="left">yes</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.vector_to_hashtable" title="Vector to Hashtable">
|
||||
VECTOR_TO_HASHTABLE</a></td><td align="left">7</td><td align="left">7</td><td align="left"> </td><td align="left">10</td><td align="left">no</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.hashtable_to_vector" title="Hashtable to Vector">
|
||||
HASHTABLE_TO_VECTOR</a></td><td align="left">7</td><td align="left">7</td><td align="left"> </td><td align="left">10</td><td align="left">no</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.vector_to_list" title="Vector to List">
|
||||
VECTOR_TO_LIST</a></td><td align="left">8</td><td align="left">5</td><td align="left"> </td><td align="left">10</td><td align="left">yes</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.list_to_vector" title="List to Vector">
|
||||
LIST_TO_VECTOR</a></td><td align="left">10</td><td align="left">5</td><td align="left"> </td><td align="left">10</td><td align="left">no</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.assoc_ord_to_unord" title="Ordered to Unordered Associative Container">
|
||||
ORDERED_TO_UNORDERED</a></td><td align="left">10</td><td align="left">5</td><td align="left"> </td><td align="left">10</td><td align="left">only map/unordered_map</td></tr><tr><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.algorithms" title="Algorithms">
|
||||
ALGORITHMS</a></td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.algorithms.sort" title="Sort Algorithm Performance">
|
||||
SORT</a></td><td align="left">7</td><td align="left">8</td><td align="left"> </td><td align="left">7</td><td align="left">no</td></tr><tr><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.locality" title="Data Locality">
|
||||
LOCALITY</a></td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.locality.sw_prefetch" title="Need Software Prefetch">
|
||||
SOFTWARE_PREFETCH</a></td><td align="left">8</td><td align="left">8</td><td align="left"> </td><td align="left">5</td><td align="left">no</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.locality.linked" title="Linked Structure Locality">
|
||||
RBTREE_LOCALITY</a></td><td align="left">4</td><td align="left">8</td><td align="left"> </td><td align="left">5</td><td align="left">no</td></tr><tr><td align="left"> </td><td align="left"><a class="link" href="bk01pt03ch19s07.html#manual.ext.profile_mode.analysis.mthread.false_share" title="False Sharing">
|
||||
FALSE_SHARING</a></td><td align="left">8</td><td align="left">10</td><td align="left"> </td><td align="left">10</td><td align="left">no</td></tr></tbody></table></div></div><br class="table-break"><div class="section" title="Diagnostic Template"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.analysis.template"></a>Diagnostic Template</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_<diagnostic></code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> What problem will it diagnose?
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Fundamentals:</em></span>.
|
||||
@ -52,10 +66,10 @@ program code
|
||||
...
|
||||
advice sample
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Containers"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.analysis.containers"/>Containers</h3></div></div></div><p>
|
||||
</p></li></ul></div></div><div class="section" title="Containers"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.analysis.containers"></a>Containers</h3></div></div></div><p>
|
||||
<span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_CONTAINERS</code>.
|
||||
</p><div class="section" title="Hashtable Too Small"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.hashtable_too_small"/>Hashtable Too Small</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p><div class="section" title="Hashtable Too Small"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.hashtable_too_small"></a>Hashtable Too Small</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_HASHTABLE_TOO_SMALL</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect hashtables with many
|
||||
rehash operations, small construction size and large destruction size.
|
||||
@ -81,7 +95,7 @@ advice sample
|
||||
|
||||
foo.cc:1: advice: Changing initial unordered_set size from 10 to 1000000 saves 1025530 rehash operations.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Hashtable Too Large"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.hashtable_too_large"/>Hashtable Too Large</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Hashtable Too Large"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.hashtable_too_large"></a>Hashtable Too Large</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_HASHTABLE_TOO_LARGE</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect hashtables which are
|
||||
never filled up because fewer elements than reserved are ever
|
||||
@ -110,7 +124,7 @@ foo.cc:1: advice: Changing initial unordered_set size from 10 to 1000000 saves 1
|
||||
foo.cc:1: advice: Changing initial unordered_set size from 100 to 10 saves N
|
||||
bytes of memory and M iteration steps.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Inefficient Hash"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.inefficient_hash"/>Inefficient Hash</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Inefficient Hash"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.inefficient_hash"></a>Inefficient Hash</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_INEFFICIENT_HASH</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect hashtables with polarized
|
||||
distribution.
|
||||
@ -141,7 +155,7 @@ class dumb_hash {
|
||||
hs.find(i);
|
||||
}
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Vector Too Small"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.vector_too_small"/>Vector Too Small</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Vector Too Small"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.vector_too_small"></a>Vector Too Small</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_VECTOR_TOO_SMALL</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span>Detect vectors with many
|
||||
resize operations, small construction size and large destruction size..
|
||||
@ -166,7 +180,7 @@ class dumb_hash {
|
||||
foo.cc:1: advice: Changing initial vector size from 10 to 1000000 saves
|
||||
copying 4000000 bytes and 20 memory allocations and deallocations.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Vector Too Large"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.vector_too_large"/>Vector Too Large</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Vector Too Large"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.vector_too_large"></a>Vector Too Large</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_VECTOR_TOO_LARGE</code>
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span>Detect vectors which are
|
||||
never filled up because fewer elements than reserved are ever
|
||||
@ -192,7 +206,7 @@ copying 4000000 bytes and 20 memory allocations and deallocations.
|
||||
foo.cc:1: advice: Changing initial vector size from 100 to 10 saves N
|
||||
bytes of memory and may reduce the number of cache and TLB misses.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Vector to Hashtable"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.vector_to_hashtable"/>Vector to Hashtable</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Vector to Hashtable"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.vector_to_hashtable"></a>Vector to Hashtable</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_VECTOR_TO_HASHTABLE</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect uses of
|
||||
<code class="code">vector</code> that can be substituted with <code class="code">unordered_set</code>
|
||||
@ -223,7 +237,7 @@ bytes of memory and may reduce the number of cache and TLB misses.
|
||||
foo.cc:1: advice: Changing "vector" to "unordered_set" will save about 500,000
|
||||
comparisons.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Hashtable to Vector"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.hashtable_to_vector"/>Hashtable to Vector</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Hashtable to Vector"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.hashtable_to_vector"></a>Hashtable to Vector</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_HASHTABLE_TO_VECTOR</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect uses of
|
||||
<code class="code">unordered_set</code> that can be substituted with <code class="code">vector</code>
|
||||
@ -252,7 +266,7 @@ comparisons.
|
||||
foo.cc:1: advice: Changing "unordered_set" to "vector" will save about N
|
||||
indirections and may achieve better data locality.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Vector to List"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.vector_to_list"/>Vector to List</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Vector to List"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.vector_to_list"></a>Vector to List</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_VECTOR_TO_LIST</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect cases where
|
||||
<code class="code">vector</code> could be substituted with <code class="code">list</code> for
|
||||
@ -282,7 +296,7 @@ indirections and may achieve better data locality.
|
||||
foo.cc:1: advice: Changing "vector" to "list" will save about 5,000,000
|
||||
operations.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="List to Vector"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.list_to_vector"/>List to Vector</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="List to Vector"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.list_to_vector"></a>List to Vector</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_LIST_TO_VECTOR</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect cases where
|
||||
<code class="code">list</code> could be substituted with <code class="code">vector</code> for
|
||||
@ -309,7 +323,7 @@ operations.
|
||||
foo.cc:1: advice: Changing "list" to "vector" will save about 1000000 indirect
|
||||
memory references.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="List to Forward List (Slist)"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.list_to_slist"/>List to Forward List (Slist)</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="List to Forward List (Slist)"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.list_to_slist"></a>List to Forward List (Slist)</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_LIST_TO_SLIST</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect cases where
|
||||
<code class="code">list</code> could be substituted with <code class="code">forward_list</code> for
|
||||
@ -339,7 +353,7 @@ memory references.
|
||||
|
||||
foo.cc:1: advice: Change "list" to "forward_list".
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Ordered to Unordered Associative Container"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.assoc_ord_to_unord"/>Ordered to Unordered Associative Container</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Ordered to Unordered Associative Container"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.assoc_ord_to_unord"></a>Ordered to Unordered Associative Container</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_ORDERED_TO_UNORDERED</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect cases where ordered
|
||||
associative containers can be replaced with unordered ones.
|
||||
@ -366,18 +380,18 @@ foo.cc:1: advice: Change "list" to "forward_list".
|
||||
7 sum += *s.find(i);
|
||||
8 }
|
||||
</pre><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Algorithms"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.analysis.algorithms"/>Algorithms</h3></div></div></div><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div></div><div class="section" title="Algorithms"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.analysis.algorithms"></a>Algorithms</h3></div></div></div><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_ALGORITHMS</code>.
|
||||
</p><div class="section" title="Sort Algorithm Performance"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.algorithms.sort"/>Sort Algorithm Performance</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p><div class="section" title="Sort Algorithm Performance"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.algorithms.sort"></a>Sort Algorithm Performance</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_SORT</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Give measure of sort algorithm
|
||||
performance based on actual input. For instance, advise Radix Sort over
|
||||
Quick Sort for a particular call context.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Fundamentals:</em></span>
|
||||
See papers:
|
||||
<a class="link" href="http://portal.acm.org/citation.cfm?doid=1065944.1065981">
|
||||
<a class="link" href="http://portal.acm.org/citation.cfm?doid=1065944.1065981" target="_top">
|
||||
A framework for adaptive algorithm selection in STAPL</a> and
|
||||
<a class="link" href="http://ieeexplore.ieee.org/search/wrapper.jsp?arnumber=4228227">
|
||||
<a class="link" href="http://ieeexplore.ieee.org/search/wrapper.jsp?arnumber=4228227" target="_top">
|
||||
Optimizing Sorting with Machine Learning Algorithms</a>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Sample runtime reduction:</em></span>60%.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Recommendation:</em></span> Change sort algorithm
|
||||
@ -389,9 +403,9 @@ foo.cc:1: advice: Change "list" to "forward_list".
|
||||
Runtime(algo) for algo in [radix, quick, merge, ...]</p></li><li class="listitem"><p><span class="emphasis"><em>Example:</em></span>
|
||||
</p><pre class="programlisting">
|
||||
</pre><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Data Locality"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.analysis.locality"/>Data Locality</h3></div></div></div><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div></div><div class="section" title="Data Locality"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.analysis.locality"></a>Data Locality</h3></div></div></div><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_LOCALITY</code>.
|
||||
</p><div class="section" title="Need Software Prefetch"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.locality.sw_prefetch"/>Need Software Prefetch</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p><div class="section" title="Need Software Prefetch"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.locality.sw_prefetch"></a>Need Software Prefetch</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_SOFTWARE_PREFETCH</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Discover sequences of indirect
|
||||
memory accesses that are not regular, thus cannot be predicted by
|
||||
@ -434,7 +448,7 @@ foo.cc:1: advice: Change "list" to "forward_list".
|
||||
|
||||
foo.cc:7: advice: Insert prefetch instruction.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="Linked Structure Locality"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.locality.linked"/>Linked Structure Locality</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="Linked Structure Locality"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.locality.linked"></a>Linked Structure Locality</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_RBTREE_LOCALITY</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Give measure of locality of
|
||||
objects stored in linked structures (lists, red-black trees and hashtables)
|
||||
@ -442,7 +456,7 @@ foo.cc:7: advice: Insert prefetch instruction.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Fundamentals:</em></span>Allocation can be tuned
|
||||
to a specific traversal pattern, to result in better data locality.
|
||||
See paper:
|
||||
<a class="link" href="http://www.springerlink.com/content/8085744l00x72662/">
|
||||
<a class="link" href="http://www.springerlink.com/content/8085744l00x72662/" target="_top">
|
||||
Custom Memory Allocation for Free</a>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Sample runtime reduction:</em></span>30%.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Recommendation:</em></span>
|
||||
@ -479,13 +493,13 @@ foo.cc:7: advice: Insert prefetch instruction.
|
||||
foo.cc:5: advice: High scatter score NNN for set built here. Consider changing
|
||||
the allocation sequence or switching to a structure conscious allocator.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Multithreaded Data Access"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.analysis.mthread"/>Multithreaded Data Access</h3></div></div></div><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Multithreaded Data Access"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.analysis.mthread"></a>Multithreaded Data Access</h3></div></div></div><p>
|
||||
The diagnostics in this group are not meant to be implemented short term.
|
||||
They require compiler support to know when container elements are written
|
||||
to. Instrumentation can only tell us when elements are referenced.
|
||||
</p><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_MULTITHREADED</code>.
|
||||
</p><div class="section" title="Data Dependence Violations at Container Level"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.mthread.ddtest"/>Data Dependence Violations at Container Level</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p><div class="section" title="Data Dependence Violations at Container Level"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.mthread.ddtest"></a>Data Dependence Violations at Container Level</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_DDTEST</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect container elements
|
||||
that are referenced from multiple threads in the parallel region or
|
||||
@ -501,7 +515,7 @@ the allocation sequence or switching to a structure conscious allocator.
|
||||
Keep a shadow for each container. Record iterator dereferences and
|
||||
container member accesses. Issue advice for elements referenced by
|
||||
multiple threads.
|
||||
See paper: <a class="link" href="http://portal.acm.org/citation.cfm?id=207110.207148">
|
||||
See paper: <a class="link" href="http://portal.acm.org/citation.cfm?id=207110.207148" target="_top">
|
||||
The LRPD test: speculative run-time parallelization of loops with
|
||||
privatization and reduction parallelization</a>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Cost model:</em></span>
|
||||
@ -509,7 +523,7 @@ the allocation sequence or switching to a structure conscious allocator.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Example:</em></span>
|
||||
</p><pre class="programlisting">
|
||||
</pre><p>
|
||||
</p></li></ul></div></div><div class="section" title="False Sharing"><div class="titlepage"><div><div><h4 class="title"><a id="manual.ext.profile_mode.analysis.mthread.false_share"/>False Sharing</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
</p></li></ul></div></div><div class="section" title="False Sharing"><div class="titlepage"><div><div><h4 class="title"><a name="manual.ext.profile_mode.analysis.mthread.false_share"></a>False Sharing</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_FALSE_SHARING</code>.
|
||||
</p></li><li class="listitem"><p><span class="emphasis"><em>Goal:</em></span> Detect elements in the
|
||||
same container which share a cache line, are written by at least one
|
||||
@ -542,7 +556,7 @@ OMP_NUM_THREADS=2 ./a.out
|
||||
foo.cc:1: advice: Change container structure or padding to avoid false
|
||||
sharing in multithreaded access at foo.cc:4. Detected N shared cache lines.
|
||||
</pre><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Statistics"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.analysis.statistics"/>Statistics</h3></div></div></div><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Statistics"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.profile_mode.analysis.statistics"></a>Statistics</h3></div></div></div><p>
|
||||
<span class="emphasis"><em>Switch:</em></span>
|
||||
<code class="code">_GLIBCXX_PROFILE_STATISTICS</code>.
|
||||
</p><p>
|
||||
@ -555,4 +569,4 @@ sharing in multithreaded access at foo.cc:4. Detected N shared cache lines.
|
||||
This diagnostic will not issue any advice, but it will print statistics for
|
||||
each container construction site. The statistics will contain the cost
|
||||
of each operation actually performed on the container.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s06.html">Prev</a> </td><td align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="mt_allocator.html">Next</a></td></tr><tr><td align="left" valign="top">Developer Information </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 20. The mt_allocator</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch19s06.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="mt_allocator.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Developer Information </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 20. The mt_allocator</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Design Issues</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , allocator "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="mt_allocator.html" title="Chapter 20. The mt_allocator"/><link rel="prev" href="mt_allocator.html" title="Chapter 20. The mt_allocator"/><link rel="next" href="bk01pt03ch20s03.html" title="Implementation"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design Issues</th></tr><tr><td align="left"><a accesskey="p" href="mt_allocator.html">Prev</a> </td><th width="60%" align="center">Chapter 20. The mt_allocator</th><td align="right"> <a accesskey="n" href="bk01pt03ch20s03.html">Next</a></td></tr></table><hr/></div><div class="section" title="Design Issues"><div class="titlepage"><div><div><h2 class="title"><a id="allocator.mt.design_issues"/>Design Issues</h2></div></div></div><div class="section" title="Overview"><div class="titlepage"><div><div><h3 class="title"><a id="allocator.mt.overview"/>Overview</h3></div></div></div><p> There are three general components to the allocator: a datum
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Design Issues</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
allocator
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="mt_allocator.html" title="Chapter 20. The mt_allocator"><link rel="prev" href="mt_allocator.html" title="Chapter 20. The mt_allocator"><link rel="next" href="bk01pt03ch20s03.html" title="Implementation"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design Issues</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="mt_allocator.html">Prev</a> </td><th width="60%" align="center">Chapter 20. The mt_allocator</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch20s03.html">Next</a></td></tr></table><hr></div><div class="section" title="Design Issues"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="allocator.mt.design_issues"></a>Design Issues</h2></div></div></div><div class="section" title="Overview"><div class="titlepage"><div><div><h3 class="title"><a name="allocator.mt.overview"></a>Overview</h3></div></div></div><p> There are three general components to the allocator: a datum
|
||||
describing the characteristics of the memory pool, a policy class
|
||||
containing this pool that links instantiation types to common or
|
||||
individual pools, and a class inheriting from the policy class that is
|
||||
@ -36,4 +48,4 @@ tuning, for instance.
|
||||
</pre><p> This class has the interface required for standard library allocator
|
||||
classes, namely member functions <code class="code">allocate</code> and
|
||||
<code class="code">deallocate</code>, plus others.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="mt_allocator.html">Prev</a> </td><td align="center"><a accesskey="u" href="mt_allocator.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch20s03.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 20. The mt_allocator </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Implementation</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="mt_allocator.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="mt_allocator.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch20s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 20. The mt_allocator </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Implementation</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Implementation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , allocator "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="mt_allocator.html" title="Chapter 20. The mt_allocator"/><link rel="prev" href="bk01pt03ch20s02.html" title="Design Issues"/><link rel="next" href="bk01pt03ch20s04.html" title="Single Thread Example"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch20s02.html">Prev</a> </td><th width="60%" align="center">Chapter 20. The mt_allocator</th><td align="right"> <a accesskey="n" href="bk01pt03ch20s04.html">Next</a></td></tr></table><hr/></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h2 class="title"><a id="allocator.mt.impl"/>Implementation</h2></div></div></div><div class="section" title="Tunable Parameters"><div class="titlepage"><div><div><h3 class="title"><a id="allocator.mt.tune"/>Tunable Parameters</h3></div></div></div><p>Certain allocation parameters can be modified, or tuned. There
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Implementation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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"><meta name="keywords" content="
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ISO C++
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|
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"><meta name="keywords" content="
|
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ISO C++
|
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,
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|
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|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="mt_allocator.html" title="Chapter 20. The mt_allocator"><link rel="prev" href="bk01pt03ch20s02.html" title="Design Issues"><link rel="next" href="bk01pt03ch20s04.html" title="Single Thread Example"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch20s02.html">Prev</a> </td><th width="60%" align="center">Chapter 20. The mt_allocator</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch20s04.html">Next</a></td></tr></table><hr></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="allocator.mt.impl"></a>Implementation</h2></div></div></div><div class="section" title="Tunable Parameters"><div class="titlepage"><div><div><h3 class="title"><a name="allocator.mt.tune"></a>Tunable Parameters</h3></div></div></div><p>Certain allocation parameters can be modified, or tuned. There
|
||||
exists a nested <code class="code">struct __pool_base::_Tune</code> that contains all
|
||||
these parameters, which include settings for
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>Alignment</p></li><li class="listitem"><p>Maximum bytes before calling <code class="code">::operator new</code> directly</p></li><li class="listitem"><p>Minimum bytes</p></li><li class="listitem"><p>Size of underlying global allocations</p></li><li class="listitem"><p>Maximum number of supported threads</p></li><li class="listitem"><p>Migration of deallocations to the global free list</p></li><li class="listitem"><p>Shunt for global <code class="code">new</code> and <code class="code">delete</code></p></li></ul></div><p>Adjusting parameters for a given instance of an allocator can only
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>Alignment</p></li><li class="listitem"><p>Maximum bytes before calling <code class="code">::operator new</code> directly</p></li><li class="listitem"><p>Minimum bytes</p></li><li class="listitem"><p>Size of underlying global allocations</p></li><li class="listitem"><p>Maximum number of supported threads</p></li><li class="listitem"><p>Migration of deallocations to the global free list</p></li><li class="listitem"><p>Shunt for global <code class="code">new</code> and <code class="code">delete</code></p></li></ul></div><p>Adjusting parameters for a given instance of an allocator can only
|
||||
happen before any allocations take place, when the allocator itself is
|
||||
initialized. For instance:
|
||||
</p><pre class="programlisting">
|
||||
@ -39,7 +51,7 @@ int main()
|
||||
|
||||
return 0;
|
||||
}
|
||||
</pre></div><div class="section" title="Initialization"><div class="titlepage"><div><div><h3 class="title"><a id="allocator.mt.init"/>Initialization</h3></div></div></div><p>
|
||||
</pre></div><div class="section" title="Initialization"><div class="titlepage"><div><div><h3 class="title"><a name="allocator.mt.init"></a>Initialization</h3></div></div></div><p>
|
||||
The static variables (pointers to freelists, tuning parameters etc)
|
||||
are initialized as above, or are set to the global defaults.
|
||||
</p><p>
|
||||
@ -131,7 +143,7 @@ The _S_initialize() function:
|
||||
for this specific bin. This only occurs when a number of blocks
|
||||
are grabbed from the global list to a thread specific list or when
|
||||
a thread decides to return some blocks to the global freelist.
|
||||
</p></div><div class="section" title="Deallocation Notes"><div class="titlepage"><div><div><h3 class="title"><a id="allocator.mt.deallocation"/>Deallocation Notes</h3></div></div></div><p> Notes about deallocation. This allocator does not explicitly
|
||||
</p></div><div class="section" title="Deallocation Notes"><div class="titlepage"><div><div><h3 class="title"><a name="allocator.mt.deallocation"></a>Deallocation Notes</h3></div></div></div><p> Notes about deallocation. This allocator does not explicitly
|
||||
release memory. Because of this, memory debugging programs like
|
||||
valgrind or purify may notice leaks: sorry about this
|
||||
inconvenience. Operating systems will reclaim allocated memory at
|
||||
@ -156,6 +168,6 @@ containers, this works, as an instance of the allocator is constructed
|
||||
as part of a container's constructor. However, this assumption is
|
||||
implementation-specific, and subject to change. For an example of a
|
||||
pool that frees memory, see the following
|
||||
<a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc++-v3/testsuite/ext/mt_allocator/deallocate_local-6.cc?view=markup">
|
||||
<a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc++-v3/testsuite/ext/mt_allocator/deallocate_local-6.cc?view=markup" target="_top">
|
||||
example.</a>
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch20s02.html">Prev</a> </td><td align="center"><a accesskey="u" href="mt_allocator.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch20s04.html">Next</a></td></tr><tr><td align="left" valign="top">Design Issues </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Single Thread Example</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch20s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="mt_allocator.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch20s04.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Design Issues </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Single Thread Example</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Single Thread Example</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , allocator "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="mt_allocator.html" title="Chapter 20. The mt_allocator"/><link rel="prev" href="bk01pt03ch20s03.html" title="Implementation"/><link rel="next" href="bk01pt03ch20s05.html" title="Multiple Thread Example"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Single Thread Example</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch20s03.html">Prev</a> </td><th width="60%" align="center">Chapter 20. The mt_allocator</th><td align="right"> <a accesskey="n" href="bk01pt03ch20s05.html">Next</a></td></tr></table><hr/></div><div class="section" title="Single Thread Example"><div class="titlepage"><div><div><h2 class="title"><a id="allocator.mt.example_single"/>Single Thread Example</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Single Thread Example</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
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,
|
||||
allocator
|
||||
"><meta name="keywords" content="
|
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ISO C++
|
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,
|
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library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
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,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="mt_allocator.html" title="Chapter 20. The mt_allocator"><link rel="prev" href="bk01pt03ch20s03.html" title="Implementation"><link rel="next" href="bk01pt03ch20s05.html" title="Multiple Thread Example"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Single Thread Example</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch20s03.html">Prev</a> </td><th width="60%" align="center">Chapter 20. The mt_allocator</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch20s05.html">Next</a></td></tr></table><hr></div><div class="section" title="Single Thread Example"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="allocator.mt.example_single"></a>Single Thread Example</h2></div></div></div><p>
|
||||
Let's start by describing how the data on a freelist is laid out in memory.
|
||||
This is the first two blocks in freelist for thread id 3 in bin 3 (8 bytes):
|
||||
</p><pre class="programlisting">
|
||||
@ -76,4 +88,4 @@ of the global freelist and update the pointer as needed
|
||||
The decision to add deallocated blocks to the front of the freelist was made
|
||||
after a set of performance measurements that showed that this is roughly 10%
|
||||
faster than maintaining a set of "last pointers" as well.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch20s03.html">Prev</a> </td><td align="center"><a accesskey="u" href="mt_allocator.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch20s05.html">Next</a></td></tr><tr><td align="left" valign="top">Implementation </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Multiple Thread Example</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch20s03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="mt_allocator.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch20s05.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Implementation </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Multiple Thread Example</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Multiple Thread Example</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , allocator "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="mt_allocator.html" title="Chapter 20. The mt_allocator"/><link rel="prev" href="bk01pt03ch20s04.html" title="Single Thread Example"/><link rel="next" href="bitmap_allocator.html" title="Chapter 21. The bitmap_allocator"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Multiple Thread Example</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch20s04.html">Prev</a> </td><th width="60%" align="center">Chapter 20. The mt_allocator</th><td align="right"> <a accesskey="n" href="bitmap_allocator.html">Next</a></td></tr></table><hr/></div><div class="section" title="Multiple Thread Example"><div class="titlepage"><div><div><h2 class="title"><a id="allocator.mt.example_multi"/>Multiple Thread Example</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Multiple Thread Example</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
allocator
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="mt_allocator.html" title="Chapter 20. The mt_allocator"><link rel="prev" href="bk01pt03ch20s04.html" title="Single Thread Example"><link rel="next" href="bitmap_allocator.html" title="Chapter 21. The bitmap_allocator"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Multiple Thread Example</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch20s04.html">Prev</a> </td><th width="60%" align="center">Chapter 20. The mt_allocator</th><td width="20%" align="right"> <a accesskey="n" href="bitmap_allocator.html">Next</a></td></tr></table><hr></div><div class="section" title="Multiple Thread Example"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="allocator.mt.example_multi"></a>Multiple Thread Example</h2></div></div></div><p>
|
||||
In the ST example we never used the thread_id variable present in each block.
|
||||
Let's start by explaining the purpose of this in a MT application.
|
||||
</p><p>
|
||||
@ -104,4 +116,4 @@ mutex to be locked) this operation is also made in chunks of blocks
|
||||
a threads freelist mentioned above). The "formula" used can probably
|
||||
be improved to further reduce the risk of blocks being "bounced back
|
||||
and forth" between freelists.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch20s04.html">Prev</a> </td><td align="center"><a accesskey="u" href="mt_allocator.html">Up</a></td><td align="right"> <a accesskey="n" href="bitmap_allocator.html">Next</a></td></tr><tr><td align="left" valign="top">Single Thread Example </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 21. The bitmap_allocator</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch20s04.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="mt_allocator.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bitmap_allocator.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Single Thread Example </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 21. The bitmap_allocator</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Implementation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , allocator "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bitmap_allocator.html" title="Chapter 21. The bitmap_allocator"/><link rel="prev" href="bitmap_allocator.html" title="Chapter 21. The bitmap_allocator"/><link rel="next" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation</th></tr><tr><td align="left"><a accesskey="p" href="bitmap_allocator.html">Prev</a> </td><th width="60%" align="center">Chapter 21. The bitmap_allocator</th><td align="right"> <a accesskey="n" href="policy_data_structures.html">Next</a></td></tr></table><hr/></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h2 class="title"><a id="allocator.bitmap.impl"/>Implementation</h2></div></div></div><div class="section" title="Free List Store"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.free_list_store"/>Free List Store</h3></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Implementation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
allocator
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bitmap_allocator.html" title="Chapter 21. The bitmap_allocator"><link rel="prev" href="bitmap_allocator.html" title="Chapter 21. The bitmap_allocator"><link rel="next" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bitmap_allocator.html">Prev</a> </td><th width="60%" align="center">Chapter 21. The bitmap_allocator</th><td width="20%" align="right"> <a accesskey="n" href="policy_data_structures.html">Next</a></td></tr></table><hr></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="allocator.bitmap.impl"></a>Implementation</h2></div></div></div><div class="section" title="Free List Store"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.free_list_store"></a>Free List Store</h3></div></div></div><p>
|
||||
The Free List Store (referred to as FLS for the remaining part of this
|
||||
document) is the Global memory pool that is shared by all instances of
|
||||
the bitmapped allocator instantiated for any type. This maintains a
|
||||
@ -38,7 +50,7 @@
|
||||
this internal fragmentation has to be decided by this function. I
|
||||
can see 3 possibilities right now. Please add more as and when you
|
||||
find better strategies.
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>Equal size check. Return true only when the 2 blocks are of equal
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>Equal size check. Return true only when the 2 blocks are of equal
|
||||
size.</p></li><li class="listitem"><p>Difference Threshold: Return true only when the _block_size is
|
||||
greater than or equal to the _required_size, and if the _BS is > _RS
|
||||
by a difference of less than some THRESHOLD value, then return true,
|
||||
@ -48,7 +60,7 @@ by a percentage of less than some THRESHOLD value, then return true,
|
||||
else return false.</p></li></ol></div><p>
|
||||
Currently, (3) is being used with a value of 36% Maximum wastage per
|
||||
Super Block.
|
||||
</p></div><div class="section" title="Super Block"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.super_block"/>Super Block</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Super Block"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.super_block"></a>Super Block</h3></div></div></div><p>
|
||||
A super block is the block of memory acquired from the FLS from
|
||||
which the bitmap allocator carves out memory for single objects
|
||||
and satisfies the user's requests. These super blocks come in
|
||||
@ -63,7 +75,7 @@ else return false.</p></li></ol></div><p>
|
||||
The super block is contained in the FLS, and the FLS is responsible for
|
||||
getting / returning Super Bocks to and from the OS using operator new
|
||||
as defined by the C++ standard.
|
||||
</p></div><div class="section" title="Super Block Data Layout"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.super_block_data"/>Super Block Data Layout</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Super Block Data Layout"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.super_block_data"></a>Super Block Data Layout</h3></div></div></div><p>
|
||||
Each Super Block will be of some size that is a multiple of the
|
||||
number of Bits Per Block. Typically, this value is chosen as
|
||||
Bits_Per_Byte x sizeof(size_t). On an x86 system, this gives the
|
||||
@ -76,7 +88,7 @@ else return false.</p></li></ol></div><p>
|
||||
</p><p>
|
||||
Consider a block of size 64 ints. In memory, it would look like this:
|
||||
(assume a 32-bit system where, size_t is a 32-bit entity).
|
||||
</p><div class="table"><a id="id526104"/><p class="title"><strong>Table 21.1. Bitmap Allocator Memory Map</strong></p><div class="table-contents"><table summary="Bitmap Allocator Memory Map" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/><col style="text-align: left" class="c3"/><col style="text-align: left" class="c4"/><col style="text-align: left" class="c5"/></colgroup><tbody><tr><td style="text-align: left">268</td><td style="text-align: left">0</td><td style="text-align: left">4294967295</td><td style="text-align: left">4294967295</td><td style="text-align: left">Data -> Space for 64 ints</td></tr></tbody></table></div></div><br class="table-break"/><p>
|
||||
</p><div class="table"><a name="id639423"></a><p class="title"><b>Table 21.1. Bitmap Allocator Memory Map</b></p><div class="table-contents"><table summary="Bitmap Allocator Memory Map" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"><col align="left" class="c3"><col align="left" class="c4"><col align="left" class="c5"></colgroup><tbody><tr><td align="left">268</td><td align="left">0</td><td align="left">4294967295</td><td align="left">4294967295</td><td align="left">Data -> Space for 64 ints</td></tr></tbody></table></div></div><br class="table-break"><p>
|
||||
The first Column(268) represents the size of the Block in bytes as
|
||||
seen by the Bitmap Allocator. Internally, a global free list is
|
||||
used to keep track of the free blocks used and given back by the
|
||||
@ -103,7 +115,7 @@ else return false.</p></li></ol></div><p>
|
||||
The 3rd 4x2 is size of the bitmap itself, which is the size of 32-bits
|
||||
x 2,
|
||||
which is 8-bytes, or 2 x sizeof(size_t).
|
||||
</p></div><div class="section" title="Maximum Wasted Percentage"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.max_wasted"/>Maximum Wasted Percentage</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Maximum Wasted Percentage"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.max_wasted"></a>Maximum Wasted Percentage</h3></div></div></div><p>
|
||||
This has nothing to do with the algorithm per-se,
|
||||
only with some vales that must be chosen correctly to ensure that the
|
||||
allocator performs well in a real word scenario, and maintains a good
|
||||
@ -128,14 +140,14 @@ For map/multimap: k = 12, and c = 4 (int and double), we get: 37.524%
|
||||
</p><p>
|
||||
Thus, knowing these values, and based on the sizeof(value_type), we may
|
||||
create a function that returns the Max_Wastage_Percentage for us to use.
|
||||
</p></div><div class="section" title="allocate"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.allocate"/><code class="function">allocate</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="allocate"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.allocate"></a><code class="function">allocate</code></h3></div></div></div><p>
|
||||
The allocate function is specialized for single object allocation
|
||||
ONLY. Thus, ONLY if n == 1, will the bitmap_allocator's
|
||||
specialized algorithm be used. Otherwise, the request is satisfied
|
||||
directly by calling operator new.
|
||||
</p><p>
|
||||
Suppose n == 1, then the allocator does the following:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Checks to see whether a free block exists somewhere in a region
|
||||
of memory close to the last satisfied request. If so, then that
|
||||
block is marked as allocated in the bit map and given to the
|
||||
@ -148,7 +160,7 @@ For map/multimap: k = 12, and c = 4 (int and double), we get: 37.524%
|
||||
</p></li><li class="listitem"><p>
|
||||
Is there any block in whatever region of memory that we own
|
||||
free? This is done by checking
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
The use count for each super block, and if that fails then
|
||||
</p></li><li class="listitem"><p>
|
||||
The individual bit-maps for each super block.
|
||||
@ -163,7 +175,7 @@ For map/multimap: k = 12, and c = 4 (int and double), we get: 37.524%
|
||||
This process involves Refilling the internal exponentially
|
||||
growing memory pool. The said effect is achieved by calling
|
||||
_S_refill_pool which does the following:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Gets more memory from the Global Free List of the Required
|
||||
size.
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -183,13 +195,13 @@ For map/multimap: k = 12, and c = 4 (int and double), we get: 37.524%
|
||||
Thus, you can clearly see that the allocate function is nothing but a
|
||||
combination of the next-fit and first-fit algorithm optimized ONLY for
|
||||
single object allocations.
|
||||
</p></div><div class="section" title="deallocate"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.deallocate"/><code class="function">deallocate</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="deallocate"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.deallocate"></a><code class="function">deallocate</code></h3></div></div></div><p>
|
||||
The deallocate function again is specialized for single objects ONLY.
|
||||
For all n belonging to > 1, the operator delete is called without
|
||||
further ado, and the deallocate function returns.
|
||||
</p><p>
|
||||
However for n == 1, a series of steps are performed:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
We first need to locate that super-block which holds the memory
|
||||
location given to us by the user. For that purpose, we maintain
|
||||
a static variable _S_last_dealloc_index, which holds the index
|
||||
@ -214,7 +226,7 @@ single object allocations.
|
||||
the vector. While doing this, we also make sure that the basic
|
||||
invariant is maintained by making sure that _S_last_request and
|
||||
_S_last_dealloc_index point to valid locations within the vector.
|
||||
</p></div><div class="section" title="Questions"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.questions"/>Questions</h3></div></div></div><div class="section" title="1"><div class="titlepage"><div><div><h4 class="title"><a id="bitmap.impl.question.1"/>1</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Questions"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.questions"></a>Questions</h3></div></div></div><div class="section" title="1"><div class="titlepage"><div><div><h4 class="title"><a name="bitmap.impl.question.1"></a>1</h4></div></div></div><p>
|
||||
Q1) The "Data Layout" section is
|
||||
cryptic. I have no idea of what you are trying to say. Layout of what?
|
||||
The free-list? Each bitmap? The Super Block?
|
||||
@ -224,7 +236,7 @@ size. In the example, a super block of size 32 x 1 is taken. The
|
||||
general formula for calculating the size of a super block is
|
||||
32 x sizeof(value_type) x 2^n, where n ranges from 0 to 32 for 32-bit
|
||||
systems.
|
||||
</p></div><div class="section" title="2"><div class="titlepage"><div><div><h4 class="title"><a id="bitmap.impl.question.2"/>2</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="2"><div class="titlepage"><div><div><h4 class="title"><a name="bitmap.impl.question.2"></a>2</h4></div></div></div><p>
|
||||
And since I just mentioned the
|
||||
term `each bitmap', what in the world is meant by it? What does each
|
||||
bitmap manage? How does it relate to the super block? Is the Super
|
||||
@ -241,7 +253,7 @@ Block a bitmap as well?
|
||||
blocks' status. Each bit-map is made up of a number of size_t,
|
||||
whose exact number for a super-block of a given size I have just
|
||||
mentioned.
|
||||
</p></div><div class="section" title="3"><div class="titlepage"><div><div><h4 class="title"><a id="bitmap.impl.question.3"/>3</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="3"><div class="titlepage"><div><div><h4 class="title"><a name="bitmap.impl.question.3"></a>3</h4></div></div></div><p>
|
||||
How do the allocate and deallocate functions work in regard to
|
||||
bitmaps?
|
||||
</p><p>
|
||||
@ -270,13 +282,13 @@ Block a bitmap as well?
|
||||
</p><p>
|
||||
The bit-map now looks like this:
|
||||
1111111111111111111111111111111111111111111111111111111111111110
|
||||
</p></div></div><div class="section" title="Locality"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.locality"/>Locality</h3></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Locality"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.locality"></a>Locality</h3></div></div></div><p>
|
||||
Another issue would be whether to keep the all bitmaps in a
|
||||
separate area in memory, or to keep them near the actual blocks
|
||||
that will be given out or allocated for the client. After some
|
||||
testing, I've decided to keep these bitmaps close to the actual
|
||||
blocks. This will help in 2 ways.
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>Constant time access for the bitmap themselves, since no kind of
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>Constant time access for the bitmap themselves, since no kind of
|
||||
look up will be needed to find the correct bitmap list or its
|
||||
equivalent.</p></li><li class="listitem"><p>And also this would preserve the cache as far as possible.</p></li></ol></div><p>
|
||||
So in effect, this kind of an allocator might prove beneficial from a
|
||||
@ -287,7 +299,7 @@ equivalent.</p></li><li class="listitem"><p>And also this would preserve the cac
|
||||
new_allocator's book keeping overhead is too much for small objects and
|
||||
single object allocations, though it preserves the locality of blocks
|
||||
very well when they are returned back to the allocator.
|
||||
</p></div><div class="section" title="Overhead and Grow Policy"><div class="titlepage"><div><div><h3 class="title"><a id="bitmap.impl.grow_policy"/>Overhead and Grow Policy</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Overhead and Grow Policy"><div class="titlepage"><div><div><h3 class="title"><a name="bitmap.impl.grow_policy"></a>Overhead and Grow Policy</h3></div></div></div><p>
|
||||
Expected overhead per block would be 1 bit in memory. Also, once
|
||||
the address of the free list has been found, the cost for
|
||||
allocation/deallocation would be negligible, and is supposed to be
|
||||
@ -310,4 +322,4 @@ equivalent.</p></li><li class="listitem"><p>And also this would preserve the cac
|
||||
sizeof(size_t) x 8 which is the number of bits in an integer,
|
||||
which can fit exactly in a CPU register. Hence, the term given is
|
||||
exponential growth of the internal pool.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bitmap_allocator.html">Prev</a> </td><td align="center"><a accesskey="u" href="bitmap_allocator.html">Up</a></td><td align="right"> <a accesskey="n" href="policy_data_structures.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 21. The bitmap_allocator </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 22. Policy-Based Data Structures</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bitmap_allocator.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bitmap_allocator.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="policy_data_structures.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 21. The bitmap_allocator </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 22. Policy-Based Data Structures</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,14 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Deprecated</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="ext_containers.html" title="Chapter 23. HP/SGI Extensions"/><link rel="prev" href="ext_containers.html" title="Chapter 23. HP/SGI Extensions"/><link rel="next" href="ext_utilities.html" title="Chapter 24. Utilities"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Deprecated</th></tr><tr><td align="left"><a accesskey="p" href="ext_containers.html">Prev</a> </td><th width="60%" align="center">Chapter 23. HP/SGI Extensions</th><td align="right"> <a accesskey="n" href="ext_utilities.html">Next</a></td></tr></table><hr/></div><div class="section" title="Deprecated"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.containers.deprecated_sgi"/>Deprecated</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Deprecated</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="ext_containers.html" title="Chapter 23. HP/SGI Extensions"><link rel="prev" href="ext_containers.html" title="Chapter 23. HP/SGI Extensions"><link rel="next" href="ext_utilities.html" title="Chapter 24. Utilities"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Deprecated</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_containers.html">Prev</a> </td><th width="60%" align="center">Chapter 23. HP/SGI Extensions</th><td width="20%" align="right"> <a accesskey="n" href="ext_utilities.html">Next</a></td></tr></table><hr></div><div class="section" title="Deprecated"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.containers.deprecated_sgi"></a>Deprecated</h2></div></div></div><p>
|
||||
The SGI hashing classes <code class="classname">hash_set</code> and
|
||||
<code class="classname">hash_set</code> have been deprecated by the
|
||||
unordered_set, unordered_multiset, unordered_map,
|
||||
@ -29,12 +37,12 @@
|
||||
and sets.
|
||||
</p><p>Each of the associative containers map, multimap, set, and multiset
|
||||
have a counterpart which uses a
|
||||
<a class="link" href="http://www.sgi.com/tech/stl/HashFunction.html">hashing
|
||||
<a class="link" href="http://www.sgi.com/tech/stl/HashFunction.html" target="_top">hashing
|
||||
function</a> to do the arranging, instead of a strict weak ordering
|
||||
function. The classes take as one of their template parameters a
|
||||
function object that will return the hash value; by default, an
|
||||
instantiation of
|
||||
<a class="link" href="http://www.sgi.com/tech/stl/hash.html">hash</a>.
|
||||
<a class="link" href="http://www.sgi.com/tech/stl/hash.html" target="_top">hash</a>.
|
||||
You should specialize this functor for your class, or define your own,
|
||||
before trying to use one of the hashing classes.
|
||||
</p><p>The hashing classes support all the usual associative container
|
||||
@ -56,4 +64,4 @@
|
||||
associative containers defined in the ISO C++ 2011 standard in the
|
||||
headers <code class="filename"><unordered_map></code>
|
||||
and <code class="filename"><unordered_set></code>.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_containers.html">Prev</a> </td><td align="center"><a accesskey="u" href="ext_containers.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_utilities.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 23. HP/SGI Extensions </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 24. Utilities</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ext_containers.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ext_containers.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ext_utilities.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 23. HP/SGI Extensions </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 24. Utilities</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Implementation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="ext_concurrency.html" title="Chapter 30. Concurrency"/><link rel="prev" href="ext_concurrency.html" title="Chapter 30. Concurrency"/><link rel="next" href="bk01pt03ch30s03.html" title="Use"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation</th></tr><tr><td align="left"><a accesskey="p" href="ext_concurrency.html">Prev</a> </td><th width="60%" align="center">Chapter 30. Concurrency</th><td align="right"> <a accesskey="n" href="bk01pt03ch30s03.html">Next</a></td></tr></table><hr/></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.concurrency.impl"/>Implementation</h2></div></div></div><div class="section" title="Using Builtin Atomic Functions"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.impl.atomic_fallbacks"/>Using Builtin Atomic Functions</h3></div></div></div><p>The functions for atomic operations described above are either
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Implementation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="ext_concurrency.html" title="Chapter 30. Concurrency"><link rel="prev" href="ext_concurrency.html" title="Chapter 30. Concurrency"><link rel="next" href="bk01pt03ch30s03.html" title="Use"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_concurrency.html">Prev</a> </td><th width="60%" align="center">Chapter 30. Concurrency</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch30s03.html">Next</a></td></tr></table><hr></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.concurrency.impl"></a>Implementation</h2></div></div></div><div class="section" title="Using Builtin Atomic Functions"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.concurrency.impl.atomic_fallbacks"></a>Using Builtin Atomic Functions</h3></div></div></div><p>The functions for atomic operations described above are either
|
||||
implemented via compiler intrinsics (if the underlying host is
|
||||
capable) or by library fallbacks.</p><p>Compiler intrinsics (builtins) are always preferred. However, as
|
||||
the compiler builtins for atomics are not universally implemented,
|
||||
@ -22,14 +34,14 @@ If builtins are possible for bool-sized integral types,
|
||||
If builtins are possible for int-sized integral types,
|
||||
<code class="code">ATOMIC_INT_LOCK_FREE</code> will be defined.
|
||||
</p><p>For the following hosts, intrinsics are enabled by default.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>alpha</p></li><li class="listitem"><p>ia64</p></li><li class="listitem"><p>powerpc</p></li><li class="listitem"><p>s390</p></li></ul></div><p>For others, some form of <code class="code">-march</code> may work. On
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>alpha</p></li><li class="listitem"><p>ia64</p></li><li class="listitem"><p>powerpc</p></li><li class="listitem"><p>s390</p></li></ul></div><p>For others, some form of <code class="code">-march</code> may work. On
|
||||
non-ancient x86 hardware, <code class="code">-march=native</code> usually does the
|
||||
trick.</p><p> For hosts without compiler intrinsics, but with capable
|
||||
hardware, hand-crafted assembly is selected. This is the case for the following hosts:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>cris</p></li><li class="listitem"><p>hppa</p></li><li class="listitem"><p>i386</p></li><li class="listitem"><p>i486</p></li><li class="listitem"><p>m48k</p></li><li class="listitem"><p>mips</p></li><li class="listitem"><p>sparc</p></li></ul></div><p>And for the rest, a simulated atomic lock via pthreads.
|
||||
</p><p> Detailed information about compiler intrinsics for atomic operations can be found in the GCC <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html"> documentation</a>.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>cris</p></li><li class="listitem"><p>hppa</p></li><li class="listitem"><p>i386</p></li><li class="listitem"><p>i486</p></li><li class="listitem"><p>m48k</p></li><li class="listitem"><p>mips</p></li><li class="listitem"><p>sparc</p></li></ul></div><p>And for the rest, a simulated atomic lock via pthreads.
|
||||
</p><p> Detailed information about compiler intrinsics for atomic operations can be found in the GCC <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html" target="_top"> documentation</a>.
|
||||
</p><p> More details on the library fallbacks from the porting <a class="link" href="internals.html#internals.thread_safety" title="Thread Safety">section</a>.
|
||||
</p></div><div class="section" title="Thread Abstraction"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.impl.thread"/>Thread Abstraction</h3></div></div></div><p>A thin layer above IEEE 1003.1 (i.e. pthreads) is used to abstract
|
||||
</p></div><div class="section" title="Thread Abstraction"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.concurrency.impl.thread"></a>Thread Abstraction</h3></div></div></div><p>A thin layer above IEEE 1003.1 (i.e. pthreads) is used to abstract
|
||||
the thread interface for GCC. This layer is called "gthread," and is
|
||||
comprised of one header file that wraps the host's default thread layer with
|
||||
a POSIX-like interface.
|
||||
@ -37,9 +49,9 @@ a POSIX-like interface.
|
||||
the current host. In libstdc++ implementation files,
|
||||
<bits/gthr.h> is used to select the proper gthreads file.
|
||||
</p><p>Within libstdc++ sources, all calls to underlying thread functionality
|
||||
use this layer. More detail as to the specific interface can be found in the source <a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00883_source.html">documentation</a>.
|
||||
use this layer. More detail as to the specific interface can be found in the source <a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00883_source.html" target="_top">documentation</a>.
|
||||
</p><p>By design, the gthread layer is interoperable with the types,
|
||||
functions, and usage found in the usual <pthread.h> file,
|
||||
including <code class="code">pthread_t</code>, <code class="code">pthread_once_t</code>, <code class="code">pthread_create</code>,
|
||||
etc.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_concurrency.html">Prev</a> </td><td align="center"><a accesskey="u" href="ext_concurrency.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch30s03.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 30. Concurrency </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Use</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ext_concurrency.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ext_concurrency.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch30s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 30. Concurrency </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Use</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Use</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="ext_concurrency.html" title="Chapter 30. Concurrency"/><link rel="prev" href="bk01pt03ch30s02.html" title="Implementation"/><link rel="next" href="bk01pt04.html" title="Part IV. Appendices"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Use</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch30s02.html">Prev</a> </td><th width="60%" align="center">Chapter 30. Concurrency</th><td align="right"> <a accesskey="n" href="bk01pt04.html">Next</a></td></tr></table><hr/></div><div class="section" title="Use"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.concurrency.use"/>Use</h2></div></div></div><p>Typical usage of the last two constructs is demonstrated as follows:
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Use</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="ext_concurrency.html" title="Chapter 30. Concurrency"><link rel="prev" href="bk01pt03ch30s02.html" title="Implementation"><link rel="next" href="bk01pt04.html" title="Part IV. Appendices"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Use</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch30s02.html">Prev</a> </td><th width="60%" align="center">Chapter 30. Concurrency</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt04.html">Next</a></td></tr></table><hr></div><div class="section" title="Use"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.concurrency.use"></a>Use</h2></div></div></div><p>Typical usage of the last two constructs is demonstrated as follows:
|
||||
</p><pre class="programlisting">
|
||||
#include <ext/concurrence.h>
|
||||
|
||||
@ -31,6 +43,6 @@ the mutex as control moves out of this block.
|
||||
concurrence-related errors. These classes
|
||||
are: <code class="code">__concurrence_lock_error</code>, <code class="code">__concurrence_unlock_error</code>, <code class="code">__concurrence_wait_error</code>,
|
||||
and <code class="code">__concurrence_broadcast_error</code>.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch30s02.html">Prev</a> </td><td align="center"><a accesskey="u" href="ext_concurrency.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt04.html">Next</a></td></tr><tr><td align="left" valign="top">Implementation </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Part IV.
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch30s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ext_concurrency.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt04.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Implementation </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Part IV.
|
||||
Appendices
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,16 +1,24 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title/><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="extensions.html" title="Part III. Extensions"/><link rel="next" href="ext_compile_checks.html" title="Chapter 16. Compile Time Checks"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"/></tr><tr><td align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title></title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="extensions.html" title="Part III. Extensions"><link rel="next" href="ext_compile_checks.html" title="Chapter 16. Compile Time Checks"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr></table><hr/></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a id="id517174"/></h1></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr></table><hr></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="id630492"></a></h1></div></div></div><p>
|
||||
Here we will make an attempt at describing the non-Standard
|
||||
extensions to the library. Some of these are from older versions of
|
||||
standard library components, namely SGI's STL, and some of these are
|
||||
GNU's.
|
||||
</p><p><span class="emphasis"><em>Before</em></span> you leap in and use any of these
|
||||
extensions, be aware of two things:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Non-Standard means exactly that.
|
||||
</p><p>
|
||||
The behavior, and the very
|
||||
@ -21,7 +29,7 @@ extensions, be aware of two things:
|
||||
treat them differently, or...
|
||||
</p></li><li class="listitem"><p>
|
||||
You should know how to access these headers properly.
|
||||
</p></li></ol></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr><tr><td align="left" valign="top">Part III.
|
||||
</p></li></ol></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part III.
|
||||
Extensions
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 16. Compile Time Checks</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 16. Compile Time Checks</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,14 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Part IV. Appendices</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="index.html" title="The GNU C++ Library Manual"/><link rel="prev" href="bk01pt03ch30s03.html" title="Use"/><link rel="next" href="appendix_contributing.html" title="Appendix A. Contributing"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Part IV.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Part IV. Appendices</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="index.html" title="The GNU C++ Library Manual"><link rel="prev" href="bk01pt03ch30s03.html" title="Use"><link rel="next" href="appendix_contributing.html" title="Appendix A. Contributing"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Part IV.
|
||||
Appendices
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch30s03.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library Manual</th><td align="right"> <a accesskey="n" href="appendix_contributing.html">Next</a></td></tr></table><hr/></div><div class="part" title="Part IV. Appendices"><div class="titlepage"><div><div><h1 class="title"><a id="appendix"/>Part IV.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch30s03.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library Manual</th><td width="20%" align="right"> <a accesskey="n" href="appendix_contributing.html">Next</a></td></tr></table><hr></div><div class="part" title="Part IV. Appendices"><div class="titlepage"><div><div><h1 class="title"><a name="appendix"></a>Part IV.
|
||||
Appendices
|
||||
</h1></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="appendix"><a href="appendix_contributing.html">A.
|
||||
</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="appendix"><a href="appendix_contributing.html">A.
|
||||
Contributing
|
||||
|
||||
</a></span></dt><dd><dl><dt><span class="section"><a href="appendix_contributing.html#contrib.list">Contributor Checklist</a></span></dt><dd><dl><dt><span class="section"><a href="appendix_contributing.html#list.reading">Reading</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.copyright">Assignment</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.getting">Getting Sources</a></span></dt><dt><span class="section"><a href="appendix_contributing.html#list.patches">Submitting Patches</a></span></dt></dl></dd><dt><span class="section"><a href="source_organization.html">Directory Layout and Source Conventions</a></span></dt><dt><span class="section"><a href="source_code_style.html">Coding Style</a></span></dt><dd><dl><dt><span class="section"><a href="source_code_style.html#coding_style.bad_identifiers">Bad Identifiers</a></span></dt><dt><span class="section"><a href="source_code_style.html#coding_style.example">By Example</a></span></dt></dl></dd><dt><span class="section"><a href="source_design_notes.html">Design Notes</a></span></dt></dl></dd><dt><span class="appendix"><a href="appendix_porting.html">B.
|
||||
@ -37,7 +41,7 @@ Support for C++11 dialect.
|
||||
|
||||
</a></span></dt><dt><span class="appendix"><a href="appendix_gpl.html">D.
|
||||
<acronym class="acronym">GNU</acronym> General Public License version 3
|
||||
</a></span></dt><dt><span class="appendix"><a href="appendix_gfdl.html">E. GNU Free Documentation License</a></span></dt></dl></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch30s03.html">Prev</a> </td><td align="center"><a accesskey="u" href="index.html">Up</a></td><td align="right"> <a accesskey="n" href="appendix_contributing.html">Next</a></td></tr><tr><td align="left" valign="top">Use </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Appendix A.
|
||||
</a></span></dt><dt><span class="appendix"><a href="appendix_gfdl.html">E. GNU Free Documentation License</a></span></dt></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch30s03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="index.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="appendix_contributing.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Use </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Appendix A.
|
||||
Contributing
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Bugs</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="status.html" title="Chapter 1. Status"/><link rel="prev" href="license.html" title="License"/><link rel="next" href="setup.html" title="Chapter 2. Setup"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Bugs</th></tr><tr><td align="left"><a accesskey="p" href="license.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr></table><hr/></div><div class="section" title="Bugs"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.status.bugs"/>Bugs</h2></div></div></div><div class="section" title="Implementation Bugs"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.bugs.impl"/>Implementation Bugs</h3></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Bugs</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="status.html" title="Chapter 1. Status"><link rel="prev" href="license.html" title="License"><link rel="next" href="setup.html" title="Chapter 2. Setup"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Bugs</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="license.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td width="20%" align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr></table><hr></div><div class="section" title="Bugs"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.intro.status.bugs"></a>Bugs</h2></div></div></div><div class="section" title="Implementation Bugs"><div class="titlepage"><div><div><h3 class="title"><a name="manual.intro.status.bugs.impl"></a>Implementation Bugs</h3></div></div></div><p>
|
||||
Information on known bugs, details on efforts to fix them, and
|
||||
fixed bugs are all available as part of the <a class="link" href="http://gcc.gnu.org/bugs/">GCC bug tracking system</a>,
|
||||
fixed bugs are all available as part of the <a class="link" href="http://gcc.gnu.org/bugs/" target="_top">GCC bug tracking system</a>,
|
||||
with the category set to <code class="literal">libstdc++</code>.
|
||||
</p></div><div class="section" title="Standard Bugs"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.bugs.iso"/>Standard Bugs</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Standard Bugs"><div class="titlepage"><div><div><h3 class="title"><a name="manual.intro.status.bugs.iso"></a>Standard Bugs</h3></div></div></div><p>
|
||||
Everybody's got issues. Even the C++ Standard Library.
|
||||
</p><p>
|
||||
The Library Working Group, or LWG, is the ISO subcommittee responsible
|
||||
@ -15,9 +23,9 @@
|
||||
Here are the issues which have resulted in code changes to the library.
|
||||
The links are to the specific defect reports from a <span class="emphasis"><em>partial
|
||||
copy</em></span> of the Issues List. You can read the full version online
|
||||
at the <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/">ISO C++
|
||||
at the <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/" target="_top">ISO C++
|
||||
Committee homepage</a>, linked to on the
|
||||
<a class="link" href="http://gcc.gnu.org/readings.html">GCC "Readings"
|
||||
<a class="link" href="http://gcc.gnu.org/readings.html" target="_top">GCC "Readings"
|
||||
page</a>. If
|
||||
you spend a lot of time reading the issues, we recommend downloading
|
||||
the ZIP file and reading them locally.
|
||||
@ -34,319 +42,319 @@
|
||||
and src directories for appearances of
|
||||
<code class="constant">_GLIBCXX_RESOLVE_LIB_DEFECTS</code> for examples
|
||||
of style. Note that we usually do not make changes to the
|
||||
code until an issue has reached <a class="link" href="../ext/lwg-active.html#DR">DR</a> status.
|
||||
</p><div class="variablelist"><dl><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#5">5</a>:
|
||||
code until an issue has reached <a class="link" href="../ext/lwg-active.html#DR" target="_top">DR</a> status.
|
||||
</p><div class="variablelist"><dl><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#5" target="_top">5</a>:
|
||||
<span class="emphasis"><em>string::compare specification questionable</em></span>
|
||||
</span></dt><dd><p>This should be two overloaded functions rather than a single function.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#17">17</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#17" target="_top">17</a>:
|
||||
<span class="emphasis"><em>Bad bool parsing</em></span>
|
||||
</span></dt><dd><p>Apparently extracting Boolean values was messed up...
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#19">19</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#19" target="_top">19</a>:
|
||||
<span class="emphasis"><em>"Noconv" definition too vague</em></span>
|
||||
</span></dt><dd><p>If <code class="code">codecvt::do_in</code> returns <code class="code">noconv</code> there are
|
||||
no changes to the values in <code class="code">[to, to_limit)</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#22">22</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#22" target="_top">22</a>:
|
||||
<span class="emphasis"><em>Member open vs flags</em></span>
|
||||
</span></dt><dd><p>Re-opening a file stream does <span class="emphasis"><em>not</em></span> clear the state flags.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#23">23</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#23" target="_top">23</a>:
|
||||
<span class="emphasis"><em>Num_get overflow result</em></span>
|
||||
</span></dt><dd><p>Implement the proposed resolution.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#25">25</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#25" target="_top">25</a>:
|
||||
<span class="emphasis"><em>String operator<< uses width() value wrong</em></span>
|
||||
</span></dt><dd><p>Padding issues.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#48">48</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#48" target="_top">48</a>:
|
||||
<span class="emphasis"><em>Use of non-existent exception constructor</em></span>
|
||||
</span></dt><dd><p>An instance of <code class="code">ios_base::failure</code> is constructed instead.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#49">49</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#49" target="_top">49</a>:
|
||||
<span class="emphasis"><em>Underspecification of ios_base::sync_with_stdio</em></span>
|
||||
</span></dt><dd><p>The return type is the <span class="emphasis"><em>previous</em></span> state of synchronization.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#50">50</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#50" target="_top">50</a>:
|
||||
<span class="emphasis"><em>Copy constructor and assignment operator of ios_base</em></span>
|
||||
</span></dt><dd><p>These members functions are declared <code class="code">private</code> and are
|
||||
thus inaccessible. Specifying the correct semantics of
|
||||
"copying stream state" was deemed too complicated.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#60">60</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#60" target="_top">60</a>:
|
||||
<span class="emphasis"><em>What is a formatted input function?</em></span>
|
||||
</span></dt><dd><p>This DR made many widespread changes to <code class="code">basic_istream</code>
|
||||
and <code class="code">basic_ostream</code> all of which have been implemented.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#63">63</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#63" target="_top">63</a>:
|
||||
<span class="emphasis"><em>Exception-handling policy for unformatted output</em></span>
|
||||
</span></dt><dd><p>Make the policy consistent with that of formatted input, unformatted
|
||||
input, and formatted output.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#68">68</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#68" target="_top">68</a>:
|
||||
<span class="emphasis"><em>Extractors for char* should store null at end</em></span>
|
||||
</span></dt><dd><p>And they do now. An editing glitch in the last item in the list of
|
||||
[27.6.1.2.3]/7.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#74">74</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#74" target="_top">74</a>:
|
||||
<span class="emphasis"><em>Garbled text for codecvt::do_max_length</em></span>
|
||||
</span></dt><dd><p>The text of the standard was gibberish. Typos gone rampant.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#75">75</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#75" target="_top">75</a>:
|
||||
<span class="emphasis"><em>Contradiction in codecvt::length's argument types</em></span>
|
||||
</span></dt><dd><p>Change the first parameter to <code class="code">stateT&</code> and implement
|
||||
the new effects paragraph.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#83">83</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#83" target="_top">83</a>:
|
||||
<span class="emphasis"><em>string::npos vs. string::max_size()</em></span>
|
||||
</span></dt><dd><p>Safety checks on the size of the string should test against
|
||||
<code class="code">max_size()</code> rather than <code class="code">npos</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#90">90</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#90" target="_top">90</a>:
|
||||
<span class="emphasis"><em>Incorrect description of operator>> for strings</em></span>
|
||||
</span></dt><dd><p>The effect contain <code class="code">isspace(c,getloc())</code> which must be
|
||||
replaced by <code class="code">isspace(c,is.getloc())</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#91">91</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#91" target="_top">91</a>:
|
||||
<span class="emphasis"><em>Description of operator>> and getline() for string<>
|
||||
might cause endless loop</em></span>
|
||||
</span></dt><dd><p>They behave as a formatted input function and as an unformatted
|
||||
input function, respectively (except that <code class="code">getline</code> is
|
||||
not required to set <code class="code">gcount</code>).
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#103">103</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#103" target="_top">103</a>:
|
||||
<span class="emphasis"><em>set::iterator is required to be modifiable, but this allows
|
||||
modification of keys.</em></span>
|
||||
</span></dt><dd><p>For associative containers where the value type is the same as
|
||||
the key type, both <code class="code">iterator</code> and <code class="code">const_iterator
|
||||
</code> are constant iterators.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#109">109</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#109" target="_top">109</a>:
|
||||
<span class="emphasis"><em>Missing binders for non-const sequence elements</em></span>
|
||||
</span></dt><dd><p>The <code class="code">binder1st</code> and <code class="code">binder2nd</code> didn't have an
|
||||
<code class="code">operator()</code> taking a non-const parameter.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#110">110</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#110" target="_top">110</a>:
|
||||
<span class="emphasis"><em>istreambuf_iterator::equal not const</em></span>
|
||||
</span></dt><dd><p>This was not a const member function. Note that the DR says to
|
||||
replace the function with a const one; we have instead provided an
|
||||
overloaded version with identical contents.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#117">117</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#117" target="_top">117</a>:
|
||||
<span class="emphasis"><em>basic_ostream uses nonexistent num_put member functions</em></span>
|
||||
</span></dt><dd><p><code class="code">num_put::put()</code> was overloaded on the wrong types.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#118">118</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#118" target="_top">118</a>:
|
||||
<span class="emphasis"><em>basic_istream uses nonexistent num_get member functions</em></span>
|
||||
</span></dt><dd><p>Same as 117, but for <code class="code">num_get::get()</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#129">129</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#129" target="_top">129</a>:
|
||||
<span class="emphasis"><em>Need error indication from seekp() and seekg()</em></span>
|
||||
</span></dt><dd><p>These functions set <code class="code">failbit</code> on error now.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#130">130</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#130" target="_top">130</a>:
|
||||
<span class="emphasis"><em>Return type of container::erase(iterator) differs for associative containers</em></span>
|
||||
</span></dt><dd><p>Make member <code class="code">erase</code> return iterator for <code class="code">set</code>, <code class="code">multiset</code>, <code class="code">map</code>, <code class="code">multimap</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#136">136</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#136" target="_top">136</a>:
|
||||
<span class="emphasis"><em>seekp, seekg setting wrong streams?</em></span>
|
||||
</span></dt><dd><p><code class="code">seekp</code> should only set the output stream, and
|
||||
<code class="code">seekg</code> should only set the input stream.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#167">167</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#167" target="_top">167</a>:
|
||||
<span class="emphasis"><em>Improper use of traits_type::length()</em></span>
|
||||
</span></dt><dd><p><code class="code">op<<</code> with a <code class="code">const char*</code> was
|
||||
calculating an incorrect number of characters to write.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#169">169</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#169" target="_top">169</a>:
|
||||
<span class="emphasis"><em>Bad efficiency of overflow() mandated</em></span>
|
||||
</span></dt><dd><p>Grow efficiently the internal array object.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#171">171</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#171" target="_top">171</a>:
|
||||
<span class="emphasis"><em>Strange seekpos() semantics due to joint position</em></span>
|
||||
</span></dt><dd><p>Quite complex to summarize...
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#181">181</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#181" target="_top">181</a>:
|
||||
<span class="emphasis"><em>make_pair() unintended behavior</em></span>
|
||||
</span></dt><dd><p>This function used to take its arguments as reference-to-const, now
|
||||
it copies them (pass by value).
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#195">195</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#195" target="_top">195</a>:
|
||||
<span class="emphasis"><em>Should basic_istream::sentry's constructor ever set eofbit?</em></span>
|
||||
</span></dt><dd><p>Yes, it can, specifically if EOF is reached while skipping whitespace.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#211">211</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#211" target="_top">211</a>:
|
||||
<span class="emphasis"><em>operator>>(istream&, string&) doesn't set failbit</em></span>
|
||||
</span></dt><dd><p>If nothing is extracted into the string, <code class="code">op>></code> now
|
||||
sets <code class="code">failbit</code> (which can cause an exception, etc., etc.).
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#214">214</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#214" target="_top">214</a>:
|
||||
<span class="emphasis"><em>set::find() missing const overload</em></span>
|
||||
</span></dt><dd><p>Both <code class="code">set</code> and <code class="code">multiset</code> were missing
|
||||
overloaded find, lower_bound, upper_bound, and equal_range functions
|
||||
for const instances.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#231">231</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#231" target="_top">231</a>:
|
||||
<span class="emphasis"><em>Precision in iostream?</em></span>
|
||||
</span></dt><dd><p>For conversion from a floating-point type, <code class="code">str.precision()</code>
|
||||
is specified in the conversion specification.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#233">233</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#233" target="_top">233</a>:
|
||||
<span class="emphasis"><em>Insertion hints in associative containers</em></span>
|
||||
</span></dt><dd><p>Implement N1780, first check before then check after, insert as close
|
||||
to hint as possible.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#235">235</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#235" target="_top">235</a>:
|
||||
<span class="emphasis"><em>No specification of default ctor for reverse_iterator</em></span>
|
||||
</span></dt><dd><p>The declaration of <code class="code">reverse_iterator</code> lists a default constructor.
|
||||
However, no specification is given what this constructor should do.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#241">241</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#241" target="_top">241</a>:
|
||||
<span class="emphasis"><em>Does unique_copy() require CopyConstructible and Assignable?</em></span>
|
||||
</span></dt><dd><p>Add a helper for forward_iterator/output_iterator, fix the existing
|
||||
one for input_iterator/output_iterator to not rely on Assignability.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#243">243</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#243" target="_top">243</a>:
|
||||
<span class="emphasis"><em>get and getline when sentry reports failure</em></span>
|
||||
</span></dt><dd><p>Store a null character only if the character array has a non-zero size.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#251">251</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#251" target="_top">251</a>:
|
||||
<span class="emphasis"><em>basic_stringbuf missing allocator_type</em></span>
|
||||
</span></dt><dd><p>This nested typedef was originally not specified.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#253">253</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#253" target="_top">253</a>:
|
||||
<span class="emphasis"><em>valarray helper functions are almost entirely useless</em></span>
|
||||
</span></dt><dd><p>Make the copy constructor and copy-assignment operator declarations
|
||||
public in gslice_array, indirect_array, mask_array, slice_array; provide
|
||||
definitions.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#265">265</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#265" target="_top">265</a>:
|
||||
<span class="emphasis"><em>std::pair::pair() effects overly restrictive</em></span>
|
||||
</span></dt><dd><p>The default ctor would build its members from copies of temporaries;
|
||||
now it simply uses their respective default ctors.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#266">266</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#266" target="_top">266</a>:
|
||||
<span class="emphasis"><em>bad_exception::~bad_exception() missing Effects clause</em></span>
|
||||
</span></dt><dd><p>The <code class="code">bad_</code>* classes no longer have destructors (they
|
||||
are trivial), since no description of them was ever given.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#271">271</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#271" target="_top">271</a>:
|
||||
<span class="emphasis"><em>basic_iostream missing typedefs</em></span>
|
||||
</span></dt><dd><p>The typedefs it inherits from its base classes can't be used, since
|
||||
(for example) <code class="code">basic_iostream<T>::traits_type</code> is ambiguous.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#275">275</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#275" target="_top">275</a>:
|
||||
<span class="emphasis"><em>Wrong type in num_get::get() overloads</em></span>
|
||||
</span></dt><dd><p>Similar to 118.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#280">280</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#280" target="_top">280</a>:
|
||||
<span class="emphasis"><em>Comparison of reverse_iterator to const reverse_iterator</em></span>
|
||||
</span></dt><dd><p>Add global functions with two template parameters.
|
||||
(NB: not added for now a templated assignment operator)
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#292">292</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#292" target="_top">292</a>:
|
||||
<span class="emphasis"><em>Effects of a.copyfmt (a)</em></span>
|
||||
</span></dt><dd><p>If <code class="code">(this == &rhs)</code> do nothing.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#300">300</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#300" target="_top">300</a>:
|
||||
<span class="emphasis"><em>List::merge() specification incomplete</em></span>
|
||||
</span></dt><dd><p>If <code class="code">(this == &x)</code> do nothing.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#303">303</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#303" target="_top">303</a>:
|
||||
<span class="emphasis"><em>Bitset input operator underspecified</em></span>
|
||||
</span></dt><dd><p>Basically, compare the input character to
|
||||
<code class="code">is.widen(0)</code> and <code class="code">is.widen(1)</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#305">305</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#305" target="_top">305</a>:
|
||||
<span class="emphasis"><em>Default behavior of codecvt<wchar_t, char,
|
||||
mbstate_t>::length()</em></span>
|
||||
</span></dt><dd><p>Do not specify what <code class="code">codecvt<wchar_t, char,
|
||||
mbstate_t>::do_length</code> must return.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#328">328</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#328" target="_top">328</a>:
|
||||
<span class="emphasis"><em>Bad sprintf format modifier in
|
||||
money_put<>::do_put()</em></span>
|
||||
</span></dt><dd><p>Change the format string to "%.0Lf".
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#365">365</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#365" target="_top">365</a>:
|
||||
<span class="emphasis"><em>Lack of const-qualification in clause 27</em></span>
|
||||
</span></dt><dd><p>Add const overloads of <code class="code">is_open</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#387">387</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#387" target="_top">387</a>:
|
||||
<span class="emphasis"><em>std::complex over-encapsulated</em></span>
|
||||
</span></dt><dd><p>Add the <code class="code">real(T)</code> and <code class="code">imag(T)</code>
|
||||
members; in C++11 mode, also adjust the existing
|
||||
<code class="code">real()</code> and <code class="code">imag()</code> members and
|
||||
free functions.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#389">389</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#389" target="_top">389</a>:
|
||||
<span class="emphasis"><em>Const overload of valarray::operator[] returns
|
||||
by value</em></span>
|
||||
</span></dt><dd><p>Change it to return a <code class="code">const T&</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#396">396</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#396" target="_top">396</a>:
|
||||
<span class="emphasis"><em>what are characters zero and one</em></span>
|
||||
</span></dt><dd><p>Implement the proposed resolution.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#402">402</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#402" target="_top">402</a>:
|
||||
<span class="emphasis"><em>Wrong new expression in [some_]allocator::construct</em></span>
|
||||
</span></dt><dd><p>Replace "new" with "::new".
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#408">408</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#408" target="_top">408</a>:
|
||||
<span class="emphasis"><em>
|
||||
Is vector<reverse_iterator<char*> > forbidden?
|
||||
</em></span>
|
||||
</span></dt><dd><p>Tweak the debug-mode checks in _Safe_iterator.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#409">409</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#409" target="_top">409</a>:
|
||||
<span class="emphasis"><em>Closing an fstream should clear the error state</em></span>
|
||||
</span></dt><dd><p>Have <code class="code">open</code> clear the error flags.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#431">431</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#431" target="_top">431</a>:
|
||||
<span class="emphasis"><em>Swapping containers with unequal allocators</em></span>
|
||||
</span></dt><dd><p>Implement Option 3, as per N1599.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#432">432</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#432" target="_top">432</a>:
|
||||
<span class="emphasis"><em>stringbuf::overflow() makes only one write position
|
||||
available</em></span>
|
||||
</span></dt><dd><p>Implement the resolution, beyond DR 169.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#434">434</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#434" target="_top">434</a>:
|
||||
<span class="emphasis"><em>bitset::to_string() hard to use</em></span>
|
||||
</span></dt><dd><p>Add three overloads, taking fewer template arguments.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#438">438</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#438" target="_top">438</a>:
|
||||
<span class="emphasis"><em>Ambiguity in the "do the right thing" clause</em></span>
|
||||
</span></dt><dd><p>Implement the resolution, basically cast less.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#453">453</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#453" target="_top">453</a>:
|
||||
<span class="emphasis"><em>basic_stringbuf::seekoff need not always fail for an empty stream</em></span>
|
||||
</span></dt><dd><p>Don't fail if the next pointer is null and newoff is zero.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#455">455</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#455" target="_top">455</a>:
|
||||
<span class="emphasis"><em>cerr::tie() and wcerr::tie() are overspecified</em></span>
|
||||
</span></dt><dd><p>Initialize cerr tied to cout and wcerr tied to wcout.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#464">464</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#464" target="_top">464</a>:
|
||||
<span class="emphasis"><em>Suggestion for new member functions in standard containers</em></span>
|
||||
</span></dt><dd><p>Add <code class="code">data()</code> to <code class="code">std::vector</code> and
|
||||
<code class="code">at(const key_type&)</code> to <code class="code">std::map</code>.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#508">508</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#508" target="_top">508</a>:
|
||||
<span class="emphasis"><em>Bad parameters for ranlux64_base_01</em></span>
|
||||
</span></dt><dd><p>Fix the parameters.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#512">512</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#512" target="_top">512</a>:
|
||||
<span class="emphasis"><em>Seeding subtract_with_carry_01 from a single unsigned long</em></span>
|
||||
</span></dt><dd><p>Construct a <code class="code">linear_congruential</code> engine and seed with it.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#526">526</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#526" target="_top">526</a>:
|
||||
<span class="emphasis"><em>Is it undefined if a function in the standard changes in
|
||||
parameters?</em></span>
|
||||
</span></dt><dd><p>Use &value.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#538">538</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#538" target="_top">538</a>:
|
||||
<span class="emphasis"><em>241 again: Does unique_copy() require CopyConstructible
|
||||
and Assignable?</em></span>
|
||||
</span></dt><dd><p>In case of input_iterator/output_iterator rely on Assignability of
|
||||
input_iterator' value_type.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#539">539</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#539" target="_top">539</a>:
|
||||
<span class="emphasis"><em>partial_sum and adjacent_difference should mention
|
||||
requirements</em></span>
|
||||
</span></dt><dd><p>We were almost doing the right thing, just use std::move
|
||||
in adjacent_difference.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#541">541</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#541" target="_top">541</a>:
|
||||
<span class="emphasis"><em>shared_ptr template assignment and void</em></span>
|
||||
</span></dt><dd><p>Add an auto_ptr<void> specialization.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#543">543</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#543" target="_top">543</a>:
|
||||
<span class="emphasis"><em>valarray slice default constructor</em></span>
|
||||
</span></dt><dd><p>Follow the straightforward proposed resolution.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#550">550</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#550" target="_top">550</a>:
|
||||
<span class="emphasis"><em>What should the return type of pow(float,int) be?</em></span>
|
||||
</span></dt><dd><p>In C++11 mode, remove the pow(float,int), etc., signatures.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#586">586</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#586" target="_top">586</a>:
|
||||
<span class="emphasis"><em>string inserter not a formatted function</em></span>
|
||||
</span></dt><dd><p>Change it to be a formatted output function (i.e. catch exceptions).
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#596">596</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#596" target="_top">596</a>:
|
||||
<span class="emphasis"><em>27.8.1.3 Table 112 omits "a+" and "a+b" modes</em></span>
|
||||
</span></dt><dd><p>Add the missing modes to fopen_mode.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#630">630</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#630" target="_top">630</a>:
|
||||
<span class="emphasis"><em>arrays of valarray</em></span>
|
||||
</span></dt><dd><p>Implement the simple resolution.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#660">660</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#660" target="_top">660</a>:
|
||||
<span class="emphasis"><em>Missing bitwise operations</em></span>
|
||||
</span></dt><dd><p>Add the missing operations.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#691">691</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#691" target="_top">691</a>:
|
||||
<span class="emphasis"><em>const_local_iterator cbegin, cend missing from TR1</em></span>
|
||||
</span></dt><dd><p>In C++11 mode add cbegin(size_type) and cend(size_type)
|
||||
to the unordered containers.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#693">693</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#693" target="_top">693</a>:
|
||||
<span class="emphasis"><em>std::bitset::all() missing</em></span>
|
||||
</span></dt><dd><p>Add it, consistently with the discussion.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#695">695</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#695" target="_top">695</a>:
|
||||
<span class="emphasis"><em>ctype<char>::classic_table() not accessible</em></span>
|
||||
</span></dt><dd><p>Make the member functions table and classic_table public.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#696">696</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#696" target="_top">696</a>:
|
||||
<span class="emphasis"><em>istream::operator>>(int&) broken</em></span>
|
||||
</span></dt><dd><p>Implement the straightforward resolution.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#761">761</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#761" target="_top">761</a>:
|
||||
<span class="emphasis"><em>unordered_map needs an at() member function</em></span>
|
||||
</span></dt><dd><p>In C++11 mode, add at() and at() const.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#775">775</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#775" target="_top">775</a>:
|
||||
<span class="emphasis"><em>Tuple indexing should be unsigned?</em></span>
|
||||
</span></dt><dd><p>Implement the int -> size_t replacements.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#776">776</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#776" target="_top">776</a>:
|
||||
<span class="emphasis"><em>Undescribed assign function of std::array</em></span>
|
||||
</span></dt><dd><p>In C++11 mode, remove assign, add fill.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#781">781</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#781" target="_top">781</a>:
|
||||
<span class="emphasis"><em>std::complex should add missing C99 functions</em></span>
|
||||
</span></dt><dd><p>In C++11 mode, add std::proj.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#809">809</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#809" target="_top">809</a>:
|
||||
<span class="emphasis"><em>std::swap should be overloaded for array types</em></span>
|
||||
</span></dt><dd><p>Add the overload.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#844">844</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#844" target="_top">844</a>:
|
||||
<span class="emphasis"><em>complex pow return type is ambiguous</em></span>
|
||||
</span></dt><dd><p>In C++11 mode, remove the pow(complex<T>, int) signature.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#853">853</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#853" target="_top">853</a>:
|
||||
<span class="emphasis"><em>to_string needs updating with zero and one</em></span>
|
||||
</span></dt><dd><p>Update / add the signatures.
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#865">865</a>:
|
||||
</p></dd><dt><span class="term"><a class="link" href="../ext/lwg-defects.html#865" target="_top">865</a>:
|
||||
<span class="emphasis"><em>More algorithms that throw away information</em></span>
|
||||
</span></dt><dd><p>The traditional HP / SGI return type and value is blessed
|
||||
by the resolution of the DR.
|
||||
</p></dd></dl></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="license.html">Prev</a> </td><td align="center"><a accesskey="u" href="status.html">Up</a></td><td align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr><tr><td align="left" valign="top">License </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 2. Setup</td></tr></table></div></body></html>
|
||||
</p></dd></dl></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="license.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="status.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">License </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 2. Setup</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,16 +1,32 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 15. Concurrency</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library , mutex , thread , future , condition_variable "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="atomics.html" title="Chapter 14. Atomics"/><link rel="next" href="extensions.html" title="Part III. Extensions"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 15.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 15. Concurrency</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
,
|
||||
mutex
|
||||
,
|
||||
thread
|
||||
,
|
||||
future
|
||||
,
|
||||
condition_variable
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="atomics.html" title="Chapter 14. Atomics"><link rel="next" href="extensions.html" title="Part III. Extensions"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 15.
|
||||
Concurrency
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="atomics.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="atomics.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="extensions.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 15. Concurrency"><div class="titlepage"><div><div><h2 class="title"><a id="std.concurrency"/>Chapter 15.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="extensions.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 15. Concurrency"><div class="titlepage"><div><div><h2 class="title"><a name="std.concurrency"></a>Chapter 15.
|
||||
Concurrency
|
||||
<a id="id516991" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="concurrency.html#std.concurrency.api">API Reference</a></span></dt></dl></div><p>
|
||||
<a class="indexterm" name="id630309"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="concurrency.html#std.concurrency.api">API Reference</a></span></dt></dl></div><p>
|
||||
Facilities for concurrent operation, and control thereof.
|
||||
</p><div class="section" title="API Reference"><div class="titlepage"><div><div><h2 class="title"><a id="std.concurrency.api"/>API Reference</h2></div></div></div><p>
|
||||
</p><div class="section" title="API Reference"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.concurrency.api"></a>API Reference</h2></div></div></div><p>
|
||||
All items are declared in one of four standard header files.
|
||||
</p><p>
|
||||
In header <code class="filename">mutex</code>, class
|
||||
@ -33,10 +49,10 @@
|
||||
and <code class="classname">packaged_task</code>.
|
||||
</p><p>
|
||||
Full API details.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="atomics.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="extensions.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 14.
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="atomics.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="extensions.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 14.
|
||||
Atomics
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Part III.
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Part III.
|
||||
Extensions
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,20 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Configure</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , configure , options "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="setup.html" title="Chapter 2. Setup"/><link rel="prev" href="setup.html" title="Chapter 2. Setup"/><link rel="next" href="make.html" title="Make"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Configure</th></tr><tr><td align="left"><a accesskey="p" href="setup.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Setup</th><td align="right"> <a accesskey="n" href="make.html">Next</a></td></tr></table><hr/></div><div class="section" title="Configure"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.setup.configure"/>Configure</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Configure</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
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,
|
||||
configure
|
||||
,
|
||||
options
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="setup.html" title="Chapter 2. Setup"><link rel="prev" href="setup.html" title="Chapter 2. Setup"><link rel="next" href="make.html" title="Make"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Configure</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="setup.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Setup</th><td width="20%" align="right"> <a accesskey="n" href="make.html">Next</a></td></tr></table><hr></div><div class="section" title="Configure"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.intro.setup.configure"></a>Configure</h2></div></div></div><p>
|
||||
When configuring libstdc++, you'll have to configure the entire
|
||||
<span class="emphasis"><em>gccsrcdir</em></span> directory. Consider using the
|
||||
toplevel gcc configuration option
|
||||
@ -10,7 +24,7 @@
|
||||
Here are all of the configure options specific to libstdc++. Keep
|
||||
in mind that
|
||||
|
||||
<a class="link" href="http://sourceware.org/autobook/autobook/autobook_14.html">they
|
||||
<a class="link" href="http://sourceware.org/autobook/autobook/autobook_14.html" target="_top">they
|
||||
all have opposite forms as well</a> (enable/disable and
|
||||
with/without). The defaults are for the <span class="emphasis"><em>current
|
||||
development sources</em></span>, which may be different than those
|
||||
@ -53,7 +67,7 @@
|
||||
choices are 'ieee_1003.1-2001' to specify an X/Open, Standard Unix
|
||||
(IEEE Std. 1003.1-2001) model based on langinfo/iconv/catgets,
|
||||
'gnu' to specify a model based on functionality from the GNU C
|
||||
library (langinfo/iconv/gettext) (from <a class="link" href="http://sources.redhat.com/glibc/">glibc</a>, the GNU C
|
||||
library (langinfo/iconv/gettext) (from <a class="link" href="http://sources.redhat.com/glibc/" target="_top">glibc</a>, the GNU C
|
||||
library), or 'generic' to use a generic "C"
|
||||
abstraction which consists of "C" locale info.
|
||||
</p><p>If not explicitly specified, the configure proccess tries
|
||||
@ -80,7 +94,7 @@
|
||||
(described next).
|
||||
</p></dd><dt><span class="term"><code class="code">--enable-threads=OPTION</code></span></dt><dd><p>Select a threading library. A full description is
|
||||
given in the
|
||||
general <a class="link" href="http://gcc.gnu.org/install/configure.html">compiler
|
||||
general <a class="link" href="http://gcc.gnu.org/install/configure.html" target="_top">compiler
|
||||
configuration instructions</a>. This option can change the
|
||||
library ABI.
|
||||
</p></dd><dt><span class="term"><code class="code">--enable-libstdcxx-threads</code></span></dt><dd><p>Enable C++11 threads support. If not explicitly specified,
|
||||
@ -215,4 +229,4 @@
|
||||
<span class="emphasis"><em>freestanding</em></span> environment, in which only a
|
||||
minimal set of headers are provided. This option builds such an
|
||||
environment.
|
||||
</p></dd></dl></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="setup.html">Prev</a> </td><td align="center"><a accesskey="u" href="setup.html">Up</a></td><td align="right"> <a accesskey="n" href="make.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 2. Setup </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Make</td></tr></table></div></body></html>
|
||||
</p></dd></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="setup.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="setup.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="make.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 2. Setup </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Make</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,17 +1,25 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 9. Containers</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="facets.html" title="Facets"/><link rel="next" href="associative.html" title="Associative"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 9.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 9. Containers</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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|
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|
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"><meta name="keywords" content="
|
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ISO C++
|
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,
|
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runtime
|
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,
|
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library
|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="facets.html" title="Facets"><link rel="next" href="associative.html" title="Associative"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 9.
|
||||
Containers
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="facets.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="facets.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="associative.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 9. Containers"><div class="titlepage"><div><div><h2 class="title"><a id="std.containers"/>Chapter 9.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="associative.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 9. Containers"><div class="titlepage"><div><div><h2 class="title"><a name="std.containers"></a>Chapter 9.
|
||||
Containers
|
||||
<a id="id514021" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="containers.html#std.containers.sequences">Sequences</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#containers.sequences.list">list</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#sequences.list.size">list::size() is O(n)</a></span></dt></dl></dd><dt><span class="section"><a href="containers.html#containers.sequences.vector">vector</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#sequences.vector.management">Space Overhead Management</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="associative.html">Associative</a></span></dt><dd><dl><dt><span class="section"><a href="associative.html#containers.associative.insert_hints">Insertion Hints</a></span></dt><dt><span class="section"><a href="associative.html#containers.associative.bitset">bitset</a></span></dt><dd><dl><dt><span class="section"><a href="associative.html#associative.bitset.size_variable">Size Variable</a></span></dt><dt><span class="section"><a href="associative.html#associative.bitset.type_string">Type String</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="containers_and_c.html">Interacting with C</a></span></dt><dd><dl><dt><span class="section"><a href="containers_and_c.html#containers.c.vs_array">Containers vs. Arrays</a></span></dt></dl></dd></dl></div><div class="section" title="Sequences"><div class="titlepage"><div><div><h2 class="title"><a id="std.containers.sequences"/>Sequences</h2></div></div></div><div class="section" title="list"><div class="titlepage"><div><div><h3 class="title"><a id="containers.sequences.list"/>list</h3></div></div></div><div class="section" title="list::size() is O(n)"><div class="titlepage"><div><div><h4 class="title"><a id="sequences.list.size"/>list::size() is O(n)</h4></div></div></div><p>
|
||||
<a class="indexterm" name="id627339"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="containers.html#std.containers.sequences">Sequences</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#containers.sequences.list">list</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#sequences.list.size">list::size() is O(n)</a></span></dt></dl></dd><dt><span class="section"><a href="containers.html#containers.sequences.vector">vector</a></span></dt><dd><dl><dt><span class="section"><a href="containers.html#sequences.vector.management">Space Overhead Management</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="associative.html">Associative</a></span></dt><dd><dl><dt><span class="section"><a href="associative.html#containers.associative.insert_hints">Insertion Hints</a></span></dt><dt><span class="section"><a href="associative.html#containers.associative.bitset">bitset</a></span></dt><dd><dl><dt><span class="section"><a href="associative.html#associative.bitset.size_variable">Size Variable</a></span></dt><dt><span class="section"><a href="associative.html#associative.bitset.type_string">Type String</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="containers_and_c.html">Interacting with C</a></span></dt><dd><dl><dt><span class="section"><a href="containers_and_c.html#containers.c.vs_array">Containers vs. Arrays</a></span></dt></dl></dd></dl></div><div class="section" title="Sequences"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.containers.sequences"></a>Sequences</h2></div></div></div><div class="section" title="list"><div class="titlepage"><div><div><h3 class="title"><a name="containers.sequences.list"></a>list</h3></div></div></div><div class="section" title="list::size() is O(n)"><div class="titlepage"><div><div><h4 class="title"><a name="sequences.list.size"></a>list::size() is O(n)</h4></div></div></div><p>
|
||||
Yes it is, and that's okay. This is a decision that we preserved
|
||||
when we imported SGI's STL implementation. The following is
|
||||
quoted from <a class="link" href="http://www.sgi.com/tech/stl/FAQ.html">their FAQ</a>:
|
||||
quoted from <a class="link" href="http://www.sgi.com/tech/stl/FAQ.html" target="_top">their FAQ</a>:
|
||||
</p><div class="blockquote"><blockquote class="blockquote"><p>
|
||||
The size() member function, for list and slist, takes time
|
||||
proportional to the number of elements in the list. This was a
|
||||
@ -42,14 +50,14 @@
|
||||
</p><pre class="programlisting">
|
||||
if (L.empty())
|
||||
...
|
||||
</pre></blockquote></div></div></div><div class="section" title="vector"><div class="titlepage"><div><div><h3 class="title"><a id="containers.sequences.vector"/>vector</h3></div></div></div><p>
|
||||
</p><div class="section" title="Space Overhead Management"><div class="titlepage"><div><div><h4 class="title"><a id="sequences.vector.management"/>Space Overhead Management</h4></div></div></div><p>
|
||||
In <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-04/msg00105.html">this
|
||||
</pre></blockquote></div></div></div><div class="section" title="vector"><div class="titlepage"><div><div><h3 class="title"><a name="containers.sequences.vector"></a>vector</h3></div></div></div><p>
|
||||
</p><div class="section" title="Space Overhead Management"><div class="titlepage"><div><div><h4 class="title"><a name="sequences.vector.management"></a>Space Overhead Management</h4></div></div></div><p>
|
||||
In <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-04/msg00105.html" target="_top">this
|
||||
message to the list</a>, Daniel Kostecky announced work on an
|
||||
alternate form of <code class="code">std::vector</code> that would support
|
||||
hints on the number of elements to be over-allocated. The design
|
||||
was also described, along with possible implementation choices.
|
||||
</p><p>
|
||||
The first two alpha releases were announced <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-07/msg00048.html">here</a>
|
||||
and <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-07/msg00111.html">here</a>.
|
||||
</p></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="facets.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="associative.html">Next</a></td></tr><tr><td align="left" valign="top">Facets </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Associative</td></tr></table></div></body></html>
|
||||
The first two alpha releases were announced <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-07/msg00048.html" target="_top">here</a>
|
||||
and <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-07/msg00111.html" target="_top">here</a>.
|
||||
</p></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="facets.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="associative.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Facets </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Associative</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Interacting with C</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="containers.html" title="Chapter 9. Containers"/><link rel="prev" href="associative.html" title="Associative"/><link rel="next" href="iterators.html" title="Chapter 10. Iterators"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Interacting with C</th></tr><tr><td align="left"><a accesskey="p" href="associative.html">Prev</a> </td><th width="60%" align="center">Chapter 9.
|
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Interacting with C</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
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|
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library
|
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"><meta name="keywords" content="
|
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ISO C++
|
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,
|
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runtime
|
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,
|
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library
|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="containers.html" title="Chapter 9. Containers"><link rel="prev" href="associative.html" title="Associative"><link rel="next" href="iterators.html" title="Chapter 10. Iterators"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Interacting with C</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="associative.html">Prev</a> </td><th width="60%" align="center">Chapter 9.
|
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Containers
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="iterators.html">Next</a></td></tr></table><hr/></div><div class="section" title="Interacting with C"><div class="titlepage"><div><div><h2 class="title"><a id="std.containers.c"/>Interacting with C</h2></div></div></div><div class="section" title="Containers vs. Arrays"><div class="titlepage"><div><div><h3 class="title"><a id="containers.c.vs_array"/>Containers vs. Arrays</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="iterators.html">Next</a></td></tr></table><hr></div><div class="section" title="Interacting with C"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.containers.c"></a>Interacting with C</h2></div></div></div><div class="section" title="Containers vs. Arrays"><div class="titlepage"><div><div><h3 class="title"><a name="containers.c.vs_array"></a>Containers vs. Arrays</h3></div></div></div><p>
|
||||
You're writing some code and can't decide whether to use builtin
|
||||
arrays or some kind of container. There are compelling reasons
|
||||
to use one of the container classes, but you're afraid that
|
||||
@ -84,7 +92,7 @@ template<typename T, unsigned int sz>
|
||||
inline unsigned int lengthof (T (&)[sz]) { return sz; }
|
||||
</pre><p>
|
||||
looks just weird! Hint: unused parameters can be left nameless.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="associative.html">Prev</a> </td><td align="center"><a accesskey="u" href="containers.html">Up</a></td><td align="right"> <a accesskey="n" href="iterators.html">Next</a></td></tr><tr><td align="left" valign="top">Associative </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 10.
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="associative.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="containers.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="iterators.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Associative </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 10.
|
||||
Iterators
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Debugging Support</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , debug "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="using.html" title="Chapter 3. Using"/><link rel="prev" href="using_exceptions.html" title="Exceptions"/><link rel="next" href="bk01pt02.html" title="Part II. Standard Contents"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Debugging Support</th></tr><tr><td align="left"><a accesskey="p" href="using_exceptions.html">Prev</a> </td><th width="60%" align="center">Chapter 3. Using</th><td align="right"> <a accesskey="n" href="bk01pt02.html">Next</a></td></tr></table><hr/></div><div class="section" title="Debugging Support"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.using.debug"/>Debugging Support</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Debugging Support</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
C++
|
||||
,
|
||||
debug
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="using.html" title="Chapter 3. Using"><link rel="prev" href="using_exceptions.html" title="Exceptions"><link rel="next" href="bk01pt02.html" title="Part II. Standard Contents"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Debugging Support</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="using_exceptions.html">Prev</a> </td><th width="60%" align="center">Chapter 3. Using</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt02.html">Next</a></td></tr></table><hr></div><div class="section" title="Debugging Support"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.intro.using.debug"></a>Debugging Support</h2></div></div></div><p>
|
||||
There are numerous things that can be done to improve the ease with
|
||||
which C++ binaries are debugged when using the GNU tool chain. Here
|
||||
are some of them.
|
||||
</p><div class="section" title="Using g++"><div class="titlepage"><div><div><h3 class="title"><a id="debug.compiler"/>Using <span class="command"><strong>g++</strong></span></h3></div></div></div><p>
|
||||
</p><div class="section" title="Using g++"><div class="titlepage"><div><div><h3 class="title"><a name="debug.compiler"></a>Using <span class="command"><strong>g++</strong></span></h3></div></div></div><p>
|
||||
Compiler flags determine how debug information is transmitted
|
||||
between compilation and debug or analysis tools.
|
||||
</p><p>
|
||||
@ -28,10 +40,10 @@
|
||||
platform can be identified via the value set by the
|
||||
PREFERRED_DEBUGGING_TYPE macro in the gcc sources.
|
||||
</p><p>
|
||||
Many other options are available: please see <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html#Debugging%20Options">"Options
|
||||
Many other options are available: please see <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html#Debugging%20Options" target="_top">"Options
|
||||
for Debugging Your Program"</a> in Using the GNU Compiler
|
||||
Collection (GCC) for a complete list.
|
||||
</p></div><div class="section" title="Debug Versions of Library Binary Files"><div class="titlepage"><div><div><h3 class="title"><a id="debug.req"/>Debug Versions of Library Binary Files</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Debug Versions of Library Binary Files"><div class="titlepage"><div><div><h3 class="title"><a name="debug.req"></a>Debug Versions of Library Binary Files</h3></div></div></div><p>
|
||||
If you would like debug symbols in libstdc++, there are two ways to
|
||||
build libstdc++ with debug flags. The first is to create a separate
|
||||
debug build by running make from the top-level of a tree
|
||||
@ -53,7 +65,7 @@
|
||||
</pre><p>
|
||||
This quick and dirty approach is often sufficient for quick
|
||||
debugging tasks, when you cannot or don't want to recompile your
|
||||
application to use the <a class="link" href="debug_mode.html" title="Chapter 17. Debug Mode">debug mode</a>.</p></div><div class="section" title="Memory Leak Hunting"><div class="titlepage"><div><div><h3 class="title"><a id="debug.memory"/>Memory Leak Hunting</h3></div></div></div><p>
|
||||
application to use the <a class="link" href="debug_mode.html" title="Chapter 17. Debug Mode">debug mode</a>.</p></div><div class="section" title="Memory Leak Hunting"><div class="titlepage"><div><div><h3 class="title"><a name="debug.memory"></a>Memory Leak Hunting</h3></div></div></div><p>
|
||||
There are various third party memory tracing and debug utilities
|
||||
that can be used to provide detailed memory allocation information
|
||||
about C++ code. An exhaustive list of tools is not going to be
|
||||
@ -122,7 +134,7 @@
|
||||
up the runtime environment, library, and test file, might be:
|
||||
</p><pre class="programlisting">
|
||||
valgrind -v --num-callers=20 --leak-check=yes --leak-resolution=high --show-reachable=yes a.out
|
||||
</pre></div><div class="section" title="Data Race Hunting"><div class="titlepage"><div><div><h3 class="title"><a id="debug.races"/>Data Race Hunting</h3></div></div></div><p>
|
||||
</pre></div><div class="section" title="Data Race Hunting"><div class="titlepage"><div><div><h3 class="title"><a name="debug.races"></a>Data Race Hunting</h3></div></div></div><p>
|
||||
All synchronization primitives used in the library internals need to be
|
||||
understood by race detectors so that they do not produce false reports.
|
||||
</p><p>
|
||||
@ -158,11 +170,11 @@
|
||||
</p><p>
|
||||
The approach described above is known to work with the following race
|
||||
detection tools:
|
||||
<a class="link" href="http://valgrind.org/docs/manual/drd-manual.html">
|
||||
<a class="link" href="http://valgrind.org/docs/manual/drd-manual.html" target="_top">
|
||||
DRD</a>,
|
||||
<a class="link" href="http://valgrind.org/docs/manual/hg-manual.html">
|
||||
<a class="link" href="http://valgrind.org/docs/manual/hg-manual.html" target="_top">
|
||||
Helgrind</a>, and
|
||||
<a class="link" href="http://code.google.com/p/data-race-test">
|
||||
<a class="link" href="http://code.google.com/p/data-race-test" target="_top">
|
||||
ThreadSanitizer</a>.
|
||||
</p><p>
|
||||
With DRD, Helgrind and ThreadSanitizer you will need to define
|
||||
@ -172,9 +184,9 @@
|
||||
#define _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A) ANNOTATE_HAPPENS_AFTER(A)
|
||||
</pre><p>
|
||||
Refer to the documentation of each particular tool for details.
|
||||
</p></div><div class="section" title="Using gdb"><div class="titlepage"><div><div><h3 class="title"><a id="debug.gdb"/>Using <span class="command"><strong>gdb</strong></span></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Using gdb"><div class="titlepage"><div><div><h3 class="title"><a name="debug.gdb"></a>Using <span class="command"><strong>gdb</strong></span></h3></div></div></div><p>
|
||||
</p><p>
|
||||
Many options are available for GDB itself: please see <a class="link" href="http://sources.redhat.com/gdb/current/onlinedocs/gdb/">
|
||||
Many options are available for GDB itself: please see <a class="link" href="http://sources.redhat.com/gdb/current/onlinedocs/gdb/" target="_top">
|
||||
"GDB features for C++" </a> in the GDB documentation. Also
|
||||
recommended: the other parts of this manual.
|
||||
</p><p>
|
||||
@ -218,25 +230,25 @@
|
||||
pretty-printers were not loaded.
|
||||
</p><p>
|
||||
For additional information on STL support and GDB please visit:
|
||||
<a class="link" href="http://sourceware.org/gdb/wiki/STLSupport"> "GDB Support
|
||||
<a class="link" href="http://sourceware.org/gdb/wiki/STLSupport" target="_top"> "GDB Support
|
||||
for STL" </a> in the GDB wiki. Additionally, in-depth
|
||||
documentation and discussion of the pretty printing feature can be
|
||||
found in "Pretty Printing" node in the GDB manual. You can find
|
||||
on-line versions of the GDB user manual in GDB's homepage, at
|
||||
<a class="link" href="http://sourceware.org/gdb/"> "GDB: The GNU Project
|
||||
<a class="link" href="http://sourceware.org/gdb/" target="_top"> "GDB: The GNU Project
|
||||
Debugger" </a>.
|
||||
</p></div><div class="section" title="Tracking uncaught exceptions"><div class="titlepage"><div><div><h3 class="title"><a id="debug.exceptions"/>Tracking uncaught exceptions</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Tracking uncaught exceptions"><div class="titlepage"><div><div><h3 class="title"><a name="debug.exceptions"></a>Tracking uncaught exceptions</h3></div></div></div><p>
|
||||
The <a class="link" href="termination.html#support.termination.verbose" title="Verbose Terminate Handler">verbose
|
||||
termination handler</a> gives information about uncaught
|
||||
exceptions which are killing the program. It is described in the
|
||||
linked-to page.
|
||||
</p></div><div class="section" title="Debug Mode"><div class="titlepage"><div><div><h3 class="title"><a id="debug.debug_mode"/>Debug Mode</h3></div></div></div><p> The <a class="link" href="debug_mode.html" title="Chapter 17. Debug Mode">Debug Mode</a>
|
||||
</p></div><div class="section" title="Debug Mode"><div class="titlepage"><div><div><h3 class="title"><a name="debug.debug_mode"></a>Debug Mode</h3></div></div></div><p> The <a class="link" href="debug_mode.html" title="Chapter 17. Debug Mode">Debug Mode</a>
|
||||
has compile and run-time checks for many containers.
|
||||
</p></div><div class="section" title="Compile Time Checking"><div class="titlepage"><div><div><h3 class="title"><a id="debug.compile_time_checks"/>Compile Time Checking</h3></div></div></div><p> The <a class="link" href="ext_compile_checks.html" title="Chapter 16. Compile Time Checks">Compile-Time
|
||||
</p></div><div class="section" title="Compile Time Checking"><div class="titlepage"><div><div><h3 class="title"><a name="debug.compile_time_checks"></a>Compile Time Checking</h3></div></div></div><p> The <a class="link" href="ext_compile_checks.html" title="Chapter 16. Compile Time Checks">Compile-Time
|
||||
Checks</a> Extension has compile-time checks for many algorithms.
|
||||
</p></div><div class="section" title="Profile-based Performance Analysis"><div class="titlepage"><div><div><h3 class="title"><a id="debug.profile_mode"/>Profile-based Performance Analysis</h3></div></div></div><p> The <a class="link" href="profile_mode.html" title="Chapter 19. Profile Mode">Profile-based
|
||||
</p></div><div class="section" title="Profile-based Performance Analysis"><div class="titlepage"><div><div><h3 class="title"><a name="debug.profile_mode"></a>Profile-based Performance Analysis</h3></div></div></div><p> The <a class="link" href="profile_mode.html" title="Chapter 19. Profile Mode">Profile-based
|
||||
Performance Analysis</a> Extension has performance checks for many
|
||||
algorithms.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="using_exceptions.html">Prev</a> </td><td align="center"><a accesskey="u" href="using.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt02.html">Next</a></td></tr><tr><td align="left" valign="top">Exceptions </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Part II.
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="using_exceptions.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="using.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Exceptions </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Part II.
|
||||
Standard Contents
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,24 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 17. Debug Mode</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , debug "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="ext_compile_checks.html" title="Chapter 16. Compile Time Checks"/><link rel="next" href="bk01pt03ch17s02.html" title="Semantics"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 17. Debug Mode</th></tr><tr><td align="left"><a accesskey="p" href="ext_compile_checks.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 17. Debug Mode</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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C++
|
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,
|
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library
|
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,
|
||||
debug
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="ext_compile_checks.html" title="Chapter 16. Compile Time Checks"><link rel="next" href="bk01pt03ch17s02.html" title="Semantics"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 17. Debug Mode</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_compile_checks.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="bk01pt03ch17s02.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 17. Debug Mode"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.debug_mode"/>Chapter 17. Debug Mode</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="debug_mode.html#manual.ext.debug_mode.intro">Intro</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s02.html">Semantics</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s03.html">Using</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s03.html#debug_mode.using.mode">Using the Debug Mode</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s03.html#debug_mode.using.specific">Using a Specific Debug Container</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch17s04.html">Design</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.goals">Goals</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods">Methods</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.wrappers">The Wrapper Model</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.safe_iter">Safe Iterators</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.safe_seq">Safe Sequences (Containers)</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.precond">Precondition Checking</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.coexistence">Release- and debug-mode coexistence</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s04.html#methods.coexistence.compile">Compile-time coexistence of release- and debug-mode components</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#methods.coexistence.link">Link- and run-time coexistence of release- and
|
||||
debug-mode components</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#methods.coexistence.alt">Alternatives for Coexistence</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.other">Other Implementations</a></span></dt></dl></dd></dl></div><div class="section" title="Intro"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.debug_mode.intro"/>Intro</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch17s02.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 17. Debug Mode"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.debug_mode"></a>Chapter 17. Debug Mode</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="debug_mode.html#manual.ext.debug_mode.intro">Intro</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s02.html">Semantics</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s03.html">Using</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s03.html#debug_mode.using.mode">Using the Debug Mode</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s03.html#debug_mode.using.specific">Using a Specific Debug Container</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch17s04.html">Design</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.goals">Goals</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods">Methods</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.wrappers">The Wrapper Model</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.safe_iter">Safe Iterators</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.safe_seq">Safe Sequences (Containers)</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.precond">Precondition Checking</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.methods.coexistence">Release- and debug-mode coexistence</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch17s04.html#methods.coexistence.compile">Compile-time coexistence of release- and debug-mode components</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#methods.coexistence.link">Link- and run-time coexistence of release- and
|
||||
debug-mode components</a></span></dt><dt><span class="section"><a href="bk01pt03ch17s04.html#methods.coexistence.alt">Alternatives for Coexistence</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="bk01pt03ch17s04.html#debug_mode.design.other">Other Implementations</a></span></dt></dl></dd></dl></div><div class="section" title="Intro"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.debug_mode.intro"></a>Intro</h2></div></div></div><p>
|
||||
By default, libstdc++ is built with efficiency in mind, and
|
||||
therefore performs little or no error checking that is not
|
||||
required by the C++ standard. This means that programs that
|
||||
@ -21,7 +35,7 @@
|
||||
The libstdc++ debug mode performs checking for many areas of the
|
||||
C++ standard, but the focus is on checking interactions among
|
||||
standard iterators, containers, and algorithms, including:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="emphasis"><em>Safe iterators</em></span>: Iterators keep track of the
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Safe iterators</em></span>: Iterators keep track of the
|
||||
container whose elements they reference, so errors such as
|
||||
incrementing a past-the-end iterator or dereferencing an iterator
|
||||
that points to a container that has been destructed are diagnosed
|
||||
@ -35,4 +49,4 @@
|
||||
the same predicate that was passed
|
||||
to <code class="code">set_intersection</code>; the libstdc++ debug mode will
|
||||
detect an error if the sequence is not sorted or was sorted by a
|
||||
different predicate.</p></li></ul></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_compile_checks.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch17s02.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 16. Compile Time Checks </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Semantics</td></tr></table></div></body></html>
|
||||
different predicate.</p></li></ul></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ext_compile_checks.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch17s02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 16. Compile Time Checks </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Semantics</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 5. Diagnostics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="termination.html" title="Termination"/><link rel="next" href="bk01pt02ch05s02.html" title="Concept Checking"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 5.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 5. Diagnostics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="termination.html" title="Termination"><link rel="next" href="bk01pt02ch05s02.html" title="Concept Checking"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 5.
|
||||
Diagnostics
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="termination.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="termination.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="bk01pt02ch05s02.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 5. Diagnostics"><div class="titlepage"><div><div><h2 class="title"><a id="std.diagnostics"/>Chapter 5.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt02ch05s02.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 5. Diagnostics"><div class="titlepage"><div><div><h2 class="title"><a name="std.diagnostics"></a>Chapter 5.
|
||||
Diagnostics
|
||||
<a id="id495429" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions.api">API Reference</a></span></dt><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions.data">Adding Data to <code class="classname">exception</code></a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt02ch05s02.html">Concept Checking</a></span></dt></dl></div><div class="section" title="Exceptions"><div class="titlepage"><div><div><h2 class="title"><a id="std.diagnostics.exceptions"/>Exceptions</h2></div></div></div><div class="section" title="API Reference"><div class="titlepage"><div><div><h3 class="title"><a id="std.diagnostics.exceptions.api"/>API Reference</h3></div></div></div><p>
|
||||
<a class="indexterm" name="id608748"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions.api">API Reference</a></span></dt><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions.data">Adding Data to <code class="classname">exception</code></a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt02ch05s02.html">Concept Checking</a></span></dt></dl></div><div class="section" title="Exceptions"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.diagnostics.exceptions"></a>Exceptions</h2></div></div></div><div class="section" title="API Reference"><div class="titlepage"><div><div><h3 class="title"><a name="std.diagnostics.exceptions.api"></a>API Reference</h3></div></div></div><p>
|
||||
All exception objects are defined in one of the standard header
|
||||
files: <code class="filename">exception</code>,
|
||||
<code class="filename">stdexcept</code>, <code class="filename">new</code>, and
|
||||
@ -23,7 +31,7 @@
|
||||
found in the source documentation.
|
||||
</p><p>
|
||||
Full API details.
|
||||
</p></div><div class="section" title="Adding Data to exception"><div class="titlepage"><div><div><h3 class="title"><a id="std.diagnostics.exceptions.data"/>Adding Data to <code class="classname">exception</code></h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Adding Data to exception"><div class="titlepage"><div><div><h3 class="title"><a name="std.diagnostics.exceptions.data"></a>Adding Data to <code class="classname">exception</code></h3></div></div></div><p>
|
||||
The standard exception classes carry with them a single string as
|
||||
data (usually describing what went wrong or where the 'throw' took
|
||||
place). It's good to remember that you can add your own data to
|
||||
@ -40,4 +48,4 @@
|
||||
int e;
|
||||
DBID id; // some user-defined type
|
||||
};
|
||||
</pre></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="termination.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt02ch05s02.html">Next</a></td></tr><tr><td align="left" valign="top">Termination </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Concept Checking</td></tr></table></div></body></html>
|
||||
</pre></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="termination.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt02ch05s02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Termination </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Concept Checking</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Writing and Generating Documentation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content="ISO C++, documentation, style, docbook, doxygen"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"/><link rel="prev" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"/><link rel="next" href="internals.html" title="Porting to New Hardware or Operating Systems"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Writing and Generating Documentation</th></tr><tr><td align="left"><a accesskey="p" href="appendix_porting.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Writing and Generating Documentation</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="ISO C++, documentation, style, docbook, doxygen"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"><link rel="prev" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"><link rel="next" href="internals.html" title="Porting to New Hardware or Operating Systems"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Writing and Generating Documentation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_porting.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
Porting and Maintenance
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="internals.html">Next</a></td></tr></table><hr/></div><div class="section" title="Writing and Generating Documentation"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.porting.doc"/>Writing and Generating Documentation</h2></div></div></div><div class="section" title="Introduction"><div class="titlepage"><div><div><h3 class="title"><a id="doc.intro"/>Introduction</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="internals.html">Next</a></td></tr></table><hr></div><div class="section" title="Writing and Generating Documentation"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="appendix.porting.doc"></a>Writing and Generating Documentation</h2></div></div></div><div class="section" title="Introduction"><div class="titlepage"><div><div><h3 class="title"><a name="doc.intro"></a>Introduction</h3></div></div></div><p>
|
||||
Documentation for the GNU C++ Library is created from three
|
||||
independent sources: a manual, a FAQ, and an API reference.
|
||||
</p><p>
|
||||
@ -25,9 +33,9 @@
|
||||
reference. Although divergent, this conforms to the GNU Project
|
||||
recommendations as long as the output is of sufficient quality,
|
||||
as per
|
||||
<a class="link" href="http://www.gnu.org/prep/standards/standards.html#Documentation">
|
||||
<a class="link" href="http://www.gnu.org/prep/standards/standards.html#Documentation" target="_top">
|
||||
GNU Manuals</a>.
|
||||
</p></div><div class="section" title="Generating Documentation"><div class="titlepage"><div><div><h3 class="title"><a id="doc.generation"/>Generating Documentation</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Generating Documentation"><div class="titlepage"><div><div><h3 class="title"><a name="doc.generation"></a>Generating Documentation</h3></div></div></div><p>
|
||||
Certain Makefile rules are required by the GNU Coding
|
||||
Standards. These standard rules generate HTML, PDF, XML, or man
|
||||
files. For each of the generative rules, there is an additional
|
||||
@ -117,19 +125,19 @@
|
||||
supported, and are always aliased to dummy rules. These
|
||||
unsupported formats are: <span class="emphasis"><em>info</em></span>,
|
||||
<span class="emphasis"><em>ps</em></span>, and <span class="emphasis"><em>dvi</em></span>.
|
||||
</p></div><div class="section" title="Doxygen"><div class="titlepage"><div><div><h3 class="title"><a id="doc.doxygen"/>Doxygen</h3></div></div></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h4 class="title"><a id="doxygen.prereq"/>Prerequisites</h4></div></div></div><div class="table"><a id="id564711"/><p class="title"><strong>Table B.1. Doxygen Prerequisites</strong></p><div class="table-contents"><table summary="Doxygen Prerequisites" border="1"><colgroup><col style="text-align: center" class="c1"/><col style="text-align: center" class="c2"/><col style="text-align: center" class="c3"/></colgroup><thead><tr><th style="text-align: center">Tool</th><th style="text-align: center">Version</th><th style="text-align: center">Required By</th></tr></thead><tbody><tr><td style="text-align: center">coreutils</td><td style="text-align: center">8.5</td><td style="text-align: center">all</td></tr><tr><td style="text-align: center">bash</td><td style="text-align: center">4.1</td><td style="text-align: center">all</td></tr><tr><td style="text-align: center">doxygen</td><td style="text-align: center">1.7.6.1</td><td style="text-align: center">all</td></tr><tr><td style="text-align: center">graphviz</td><td style="text-align: center">2.26</td><td style="text-align: center">graphical hierarchies</td></tr><tr><td style="text-align: center">pdflatex</td><td style="text-align: center">2007-59</td><td style="text-align: center">pdf output</td></tr></tbody></table></div></div><br class="table-break"/><p>
|
||||
</p></div><div class="section" title="Doxygen"><div class="titlepage"><div><div><h3 class="title"><a name="doc.doxygen"></a>Doxygen</h3></div></div></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h4 class="title"><a name="doxygen.prereq"></a>Prerequisites</h4></div></div></div><div class="table"><a name="id678029"></a><p class="title"><b>Table B.1. Doxygen Prerequisites</b></p><div class="table-contents"><table summary="Doxygen Prerequisites" border="1"><colgroup><col align="center" class="c1"><col align="center" class="c2"><col align="center" class="c3"></colgroup><thead><tr><th align="center">Tool</th><th align="center">Version</th><th align="center">Required By</th></tr></thead><tbody><tr><td align="center">coreutils</td><td align="center">8.5</td><td align="center">all</td></tr><tr><td align="center">bash</td><td align="center">4.1</td><td align="center">all</td></tr><tr><td align="center">doxygen</td><td align="center">1.7.6.1</td><td align="center">all</td></tr><tr><td align="center">graphviz</td><td align="center">2.26</td><td align="center">graphical hierarchies</td></tr><tr><td align="center">pdflatex</td><td align="center">2007-59</td><td align="center">pdf output</td></tr></tbody></table></div></div><br class="table-break"><p>
|
||||
Prerequisite tools are Bash 2.0 or later,
|
||||
<a class="link" href="http://www.doxygen.org/">Doxygen</a>, and
|
||||
the <a class="link" href="http://www.gnu.org/software/coreutils/">GNU
|
||||
<a class="link" href="http://www.doxygen.org/" target="_top">Doxygen</a>, and
|
||||
the <a class="link" href="http://www.gnu.org/software/coreutils/" target="_top">GNU
|
||||
coreutils</a>. (GNU versions of find, xargs, and possibly
|
||||
sed and grep are used, just because the GNU versions make
|
||||
things very easy.)
|
||||
</p><p>
|
||||
To generate the pretty pictures and hierarchy
|
||||
graphs, the
|
||||
<a class="link" href="http://www.graphviz.org">Graphviz</a> package
|
||||
<a class="link" href="http://www.graphviz.org" target="_top">Graphviz</a> package
|
||||
will need to be installed. For PDF
|
||||
output, <a class="link" href="http://www.tug.org/applications/pdftex/">
|
||||
output, <a class="link" href="http://www.tug.org/applications/pdftex/" target="_top">
|
||||
pdflatex</a> is required.
|
||||
</p><p>
|
||||
Be warned the PDF file generated via doxygen is extremely
|
||||
@ -139,7 +147,7 @@
|
||||
capacity. Specifically, the <code class="literal">pool_size</code>
|
||||
variable in the configuration file <code class="filename">texmf.cnf</code> may
|
||||
need to be increased by a minimum factor of two.
|
||||
</p></div><div class="section" title="Generating the Doxygen Files"><div class="titlepage"><div><div><h4 class="title"><a id="doxygen.rules"/>Generating the Doxygen Files</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Generating the Doxygen Files"><div class="titlepage"><div><div><h4 class="title"><a name="doxygen.rules"></a>Generating the Doxygen Files</h4></div></div></div><p>
|
||||
The following Makefile rules run Doxygen to generate HTML
|
||||
docs, XML docs, XML docs as a single file, PDF docs, and the
|
||||
man pages. These rules are not conditional! If the required
|
||||
@ -171,7 +179,7 @@
|
||||
If you wish to tweak the Doxygen settings, do so by editing
|
||||
<code class="filename">doc/doxygen/user.cfg.in</code>. Notes to fellow
|
||||
library hackers are written in triple-# comments.
|
||||
</p></div><div class="section" title="Markup"><div class="titlepage"><div><div><h4 class="title"><a id="doxygen.markup"/>Markup</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Markup"><div class="titlepage"><div><div><h4 class="title"><a name="doxygen.markup"></a>Markup</h4></div></div></div><p>
|
||||
In general, libstdc++ files should be formatted according to
|
||||
the rules found in the
|
||||
<a class="link" href="source_code_style.html" title="Coding Style">Coding Standard</a>. Before
|
||||
@ -181,7 +189,7 @@
|
||||
Adding Doxygen markup to a file (informally called
|
||||
<span class="quote">“<span class="quote">doxygenating</span>”</span>) is very simple. The Doxygen manual can be
|
||||
found
|
||||
<a class="link" href="http://www.stack.nl/~dimitri/doxygen/download.html#latestman">here</a>.
|
||||
<a class="link" href="http://www.stack.nl/~dimitri/doxygen/download.html#latestman" target="_top">here</a>.
|
||||
We try to use a very-recent version of Doxygen.
|
||||
</p><p>
|
||||
For classes, use
|
||||
@ -193,10 +201,10 @@
|
||||
member functions.
|
||||
</p><p>
|
||||
Some commentary to accompany
|
||||
the first list in the <a class="link" href="http://www.stack.nl/~dimitri/doxygen/docblocks.html">Special
|
||||
the first list in the <a class="link" href="http://www.stack.nl/~dimitri/doxygen/docblocks.html" target="_top">Special
|
||||
Documentation Blocks</a> section of
|
||||
the Doxygen manual:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>For longer comments, use the Javadoc style...</p></li><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>For longer comments, use the Javadoc style...</p></li><li class="listitem"><p>
|
||||
...not the Qt style. The intermediate *'s are preferred.
|
||||
</p></li><li class="listitem"><p>
|
||||
Use the triple-slash style only for one-line comments (the
|
||||
@ -226,14 +234,14 @@
|
||||
Complicated math functions should use the multi-line
|
||||
format. An example from <code class="filename">random.h</code>:
|
||||
</p><p>
|
||||
</p><div class="literallayout"><p><br/>
|
||||
/**<br/>
|
||||
* @brief A model of a linear congruential random number generator.<br/>
|
||||
*<br/>
|
||||
* @f[<br/>
|
||||
* x_{i+1}\leftarrow(ax_{i} + c) \bmod m<br/>
|
||||
* @f]<br/>
|
||||
*/<br/>
|
||||
</p><div class="literallayout"><p><br>
|
||||
/**<br>
|
||||
* @brief A model of a linear congruential random number generator.<br>
|
||||
*<br>
|
||||
* @f[<br>
|
||||
* x_{i+1}\leftarrow(ax_{i} + c) \bmod m<br>
|
||||
* @f]<br>
|
||||
*/<br>
|
||||
</p></div><p>
|
||||
</p><p>
|
||||
One area of note is the markup required for
|
||||
@ -242,10 +250,10 @@
|
||||
multiple directories, include part of the installed path to
|
||||
disambiguate. For example:
|
||||
</p><p>
|
||||
</p><div class="literallayout"><p><br/>
|
||||
/** @file debug/vector<br/>
|
||||
* This file is a GNU debug extension to the Standard C++ Library.<br/>
|
||||
*/<br/>
|
||||
</p><div class="literallayout"><p><br>
|
||||
/** @file debug/vector<br>
|
||||
* This file is a GNU debug extension to the Standard C++ Library.<br>
|
||||
*/<br>
|
||||
</p></div><p>
|
||||
</p><p>
|
||||
The other relevant detail for header files is the use of a
|
||||
@ -260,18 +268,18 @@
|
||||
<code class="literal">headername</code> in the <code class="literal">file</code>
|
||||
block. An example:
|
||||
</p><p>
|
||||
</p><div class="literallayout"><p><br/>
|
||||
/** @file bits/basic_string.h<br/>
|
||||
* This is an internal header file, included by other library headers.<br/>
|
||||
* Do not attempt to use it directly. @headername{string}<br/>
|
||||
*/<br/>
|
||||
</p><div class="literallayout"><p><br>
|
||||
/** @file bits/basic_string.h<br>
|
||||
* This is an internal header file, included by other library headers.<br>
|
||||
* Do not attempt to use it directly. @headername{string}<br>
|
||||
*/<br>
|
||||
</p></div><p>
|
||||
</p><p>
|
||||
Be careful about using certain, special characters when
|
||||
writing Doxygen comments. Single and double quotes, and
|
||||
separators in filenames are two common trouble spots. When in
|
||||
doubt, consult the following table.
|
||||
</p><div class="table"><a id="id565227"/><p class="title"><strong>Table B.2. HTML to Doxygen Markup Comparison</strong></p><div class="table-contents"><table summary="HTML to Doxygen Markup Comparison" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/></colgroup><thead><tr><th style="text-align: left">HTML</th><th style="text-align: left">Doxygen</th></tr></thead><tbody><tr><td style="text-align: left">\</td><td style="text-align: left">\\</td></tr><tr><td style="text-align: left">"</td><td style="text-align: left">\"</td></tr><tr><td style="text-align: left">'</td><td style="text-align: left">\'</td></tr><tr><td style="text-align: left"><i></td><td style="text-align: left">@a word</td></tr><tr><td style="text-align: left"><b></td><td style="text-align: left">@b word</td></tr><tr><td style="text-align: left"><code></td><td style="text-align: left">@c word</td></tr><tr><td style="text-align: left"><em></td><td style="text-align: left">@a word</td></tr><tr><td style="text-align: left"><em></td><td style="text-align: left"><em>two words or more</em></td></tr></tbody></table></div></div><br class="table-break"/></div></div><div class="section" title="Docbook"><div class="titlepage"><div><div><h3 class="title"><a id="doc.docbook"/>Docbook</h3></div></div></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h4 class="title"><a id="docbook.prereq"/>Prerequisites</h4></div></div></div><div class="table"><a id="id565389"/><p class="title"><strong>Table B.3. Docbook Prerequisites</strong></p><div class="table-contents"><table summary="Docbook Prerequisites" border="1"><colgroup><col style="text-align: center" class="c1"/><col style="text-align: center" class="c2"/><col style="text-align: center" class="c3"/></colgroup><thead><tr><th style="text-align: center">Tool</th><th style="text-align: center">Version</th><th style="text-align: center">Required By</th></tr></thead><tbody><tr><td style="text-align: center">docbook5-style-xsl</td><td style="text-align: center">1.76.1</td><td style="text-align: center">all</td></tr><tr><td style="text-align: center">xsltproc</td><td style="text-align: center">1.1.26</td><td style="text-align: center">all</td></tr><tr><td style="text-align: center">xmllint</td><td style="text-align: center">2.7.7</td><td style="text-align: center">validation</td></tr><tr><td style="text-align: center">dblatex</td><td style="text-align: center">0.3</td><td style="text-align: center">pdf output</td></tr><tr><td style="text-align: center">pdflatex</td><td style="text-align: center">2007-59</td><td style="text-align: center">pdf output</td></tr><tr><td style="text-align: center">docbook2X</td><td style="text-align: center">0.8.8</td><td style="text-align: center">info output</td></tr><tr><td style="text-align: center">epub3 stylesheets</td><td style="text-align: center">b3</td><td style="text-align: center">epub output</td></tr></tbody></table></div></div><br class="table-break"/><p>
|
||||
</p><div class="table"><a name="id678546"></a><p class="title"><b>Table B.2. HTML to Doxygen Markup Comparison</b></p><div class="table-contents"><table summary="HTML to Doxygen Markup Comparison" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"></colgroup><thead><tr><th align="left">HTML</th><th align="left">Doxygen</th></tr></thead><tbody><tr><td align="left">\</td><td align="left">\\</td></tr><tr><td align="left">"</td><td align="left">\"</td></tr><tr><td align="left">'</td><td align="left">\'</td></tr><tr><td align="left"><i></td><td align="left">@a word</td></tr><tr><td align="left"><b></td><td align="left">@b word</td></tr><tr><td align="left"><code></td><td align="left">@c word</td></tr><tr><td align="left"><em></td><td align="left">@a word</td></tr><tr><td align="left"><em></td><td align="left"><em>two words or more</em></td></tr></tbody></table></div></div><br class="table-break"></div></div><div class="section" title="Docbook"><div class="titlepage"><div><div><h3 class="title"><a name="doc.docbook"></a>Docbook</h3></div></div></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h4 class="title"><a name="docbook.prereq"></a>Prerequisites</h4></div></div></div><div class="table"><a name="id678708"></a><p class="title"><b>Table B.3. Docbook Prerequisites</b></p><div class="table-contents"><table summary="Docbook Prerequisites" border="1"><colgroup><col align="center" class="c1"><col align="center" class="c2"><col align="center" class="c3"></colgroup><thead><tr><th align="center">Tool</th><th align="center">Version</th><th align="center">Required By</th></tr></thead><tbody><tr><td align="center">docbook5-style-xsl</td><td align="center">1.76.1</td><td align="center">all</td></tr><tr><td align="center">xsltproc</td><td align="center">1.1.26</td><td align="center">all</td></tr><tr><td align="center">xmllint</td><td align="center">2.7.7</td><td align="center">validation</td></tr><tr><td align="center">dblatex</td><td align="center">0.3</td><td align="center">pdf output</td></tr><tr><td align="center">pdflatex</td><td align="center">2007-59</td><td align="center">pdf output</td></tr><tr><td align="center">docbook2X</td><td align="center">0.8.8</td><td align="center">info output</td></tr><tr><td align="center">epub3 stylesheets</td><td align="center">b3</td><td align="center">epub output</td></tr></tbody></table></div></div><br class="table-break"><p>
|
||||
Editing the DocBook sources requires an XML editor. Many
|
||||
exist: some notable options
|
||||
include <span class="command"><strong>emacs</strong></span>, <span class="application">Kate</span>,
|
||||
@ -306,19 +314,19 @@
|
||||
by a vendor package like <code class="filename">libxml2</code> and <code class="filename">docbook5-schemas-5.0-4</code>
|
||||
</p><p>
|
||||
For PDF output, something that transforms valid Docbook XML to PDF is
|
||||
required. Possible solutions include <a class="link" href="http://dblatex.sourceforge.net">dblatex</a>,
|
||||
required. Possible solutions include <a class="link" href="http://dblatex.sourceforge.net" target="_top">dblatex</a>,
|
||||
<span class="command"><strong>xmlto</strong></span>, or <span class="command"><strong>prince</strong></span>. Of
|
||||
these, <span class="command"><strong>dblatex</strong></span> is the default. Other
|
||||
options are listed on the DocBook web <a class="link" href="http://wiki.docbook.org/topic/DocBookPublishingTools">pages</a>. Please
|
||||
options are listed on the DocBook web <a class="link" href="http://wiki.docbook.org/topic/DocBookPublishingTools" target="_top">pages</a>. Please
|
||||
consult the <code class="email"><<a class="email" href="mailto:libstdc++@gcc.gnu.org">libstdc++@gcc.gnu.org</a>></code> list when
|
||||
preparing printed manuals for current best practice and
|
||||
suggestions.
|
||||
</p><p>
|
||||
For Texinfo output, something that transforms valid Docbook
|
||||
XML to Texinfo is required. The default choice is <a class="link" href="http://docbook2x.sourceforge.net/">docbook2X</a>.
|
||||
XML to Texinfo is required. The default choice is <a class="link" href="http://docbook2x.sourceforge.net/" target="_top">docbook2X</a>.
|
||||
</p><p>
|
||||
For epub output, the <a class="link" href="http://sourceforge.net/projects/docbook/files/epub3/">stylesheets</a> for EPUB3 are required. These stylesheets are still in development. To validate the created file, <a class="link" href="https://code.google.com/p/epubcheck/">epubcheck</a> is necessary.
|
||||
</p></div><div class="section" title="Generating the DocBook Files"><div class="titlepage"><div><div><h4 class="title"><a id="docbook.rules"/>Generating the DocBook Files</h4></div></div></div><p>
|
||||
For epub output, the <a class="link" href="http://sourceforge.net/projects/docbook/files/epub3/" target="_top">stylesheets</a> for EPUB3 are required. These stylesheets are still in development. To validate the created file, <a class="link" href="https://code.google.com/p/epubcheck/" target="_top">epubcheck</a> is necessary.
|
||||
</p></div><div class="section" title="Generating the DocBook Files"><div class="titlepage"><div><div><h4 class="title"><a name="docbook.rules"></a>Generating the DocBook Files</h4></div></div></div><p>
|
||||
The following Makefile rules generate (in order): an HTML
|
||||
version of all the DocBook documentation, a PDF version of the
|
||||
same, and a single XML document. These rules are not
|
||||
@ -343,7 +351,7 @@
|
||||
<strong class="userinput"><code>
|
||||
make <code class="literal">XSL_STYLE_DIR="/usr/share/xml/docbook/stylesheet/nwalsh"</code> doc-html-docbook
|
||||
</code></strong>
|
||||
</pre></div><div class="section" title="Editing and Validation"><div class="titlepage"><div><div><h4 class="title"><a id="docbook.validation"/>Editing and Validation</h4></div></div></div><p>
|
||||
</pre></div><div class="section" title="Editing and Validation"><div class="titlepage"><div><div><h4 class="title"><a name="docbook.validation"></a>Editing and Validation</h4></div></div></div><p>
|
||||
After editing the xml sources, please make sure that the XML
|
||||
documentation and markup is still valid. This can be
|
||||
done easily, with the following validation rule:
|
||||
@ -363,90 +371,90 @@ make <code class="literal">XSL_STYLE_DIR="/usr/share/xml/docbook/stylesheet/nwal
|
||||
validation on the entire manual fails.
|
||||
</p><p>
|
||||
All Docbook xml sources should always validate. No excuses!
|
||||
</p></div><div class="section" title="File Organization and Basics"><div class="titlepage"><div><div><h4 class="title"><a id="docbook.examples"/>File Organization and Basics</h4></div></div></div><div class="literallayout"><p><br/>
|
||||
<span class="emphasis"><em>Which files are important</em></span><br/>
|
||||
<br/>
|
||||
All Docbook files are in the directory<br/>
|
||||
libstdc++-v3/doc/xml<br/>
|
||||
<br/>
|
||||
Inside this directory, the files of importance:<br/>
|
||||
spine.xml - index to documentation set<br/>
|
||||
manual/spine.xml - index to manual<br/>
|
||||
manual/*.xml - individual chapters and sections of the manual<br/>
|
||||
faq.xml - index to FAQ<br/>
|
||||
api.xml - index to source level / API<br/>
|
||||
<br/>
|
||||
All *.txml files are template xml files, i.e., otherwise empty files with<br/>
|
||||
the correct structure, suitable for filling in with new information.<br/>
|
||||
<br/>
|
||||
<span class="emphasis"><em>Canonical Writing Style</em></span><br/>
|
||||
<br/>
|
||||
class template<br/>
|
||||
function template<br/>
|
||||
member function template<br/>
|
||||
(via C++ Templates, Vandevoorde)<br/>
|
||||
<br/>
|
||||
class in namespace std: allocator, not std::allocator<br/>
|
||||
<br/>
|
||||
header file: iostream, not <iostream><br/>
|
||||
<br/>
|
||||
<br/>
|
||||
<span class="emphasis"><em>General structure</em></span><br/>
|
||||
<br/>
|
||||
<set><br/>
|
||||
<book><br/>
|
||||
</book><br/>
|
||||
<br/>
|
||||
<book><br/>
|
||||
<chapter><br/>
|
||||
</chapter><br/>
|
||||
</book><br/>
|
||||
<br/>
|
||||
<book><br/>
|
||||
<part><br/>
|
||||
<chapter><br/>
|
||||
<section><br/>
|
||||
</section><br/>
|
||||
<br/>
|
||||
<sect1><br/>
|
||||
</sect1><br/>
|
||||
<br/>
|
||||
<sect1><br/>
|
||||
<sect2><br/>
|
||||
</sect2><br/>
|
||||
</sect1><br/>
|
||||
</chapter><br/>
|
||||
<br/>
|
||||
<chapter><br/>
|
||||
</chapter><br/>
|
||||
</part><br/>
|
||||
</book><br/>
|
||||
<br/>
|
||||
</set><br/>
|
||||
</p></div></div><div class="section" title="Markup By Example"><div class="titlepage"><div><div><h4 class="title"><a id="docbook.markup"/>Markup By Example</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="File Organization and Basics"><div class="titlepage"><div><div><h4 class="title"><a name="docbook.examples"></a>File Organization and Basics</h4></div></div></div><div class="literallayout"><p><br>
|
||||
<span class="emphasis"><em>Which files are important</em></span><br>
|
||||
<br>
|
||||
All Docbook files are in the directory<br>
|
||||
libstdc++-v3/doc/xml<br>
|
||||
<br>
|
||||
Inside this directory, the files of importance:<br>
|
||||
spine.xml - index to documentation set<br>
|
||||
manual/spine.xml - index to manual<br>
|
||||
manual/*.xml - individual chapters and sections of the manual<br>
|
||||
faq.xml - index to FAQ<br>
|
||||
api.xml - index to source level / API<br>
|
||||
<br>
|
||||
All *.txml files are template xml files, i.e., otherwise empty files with<br>
|
||||
the correct structure, suitable for filling in with new information.<br>
|
||||
<br>
|
||||
<span class="emphasis"><em>Canonical Writing Style</em></span><br>
|
||||
<br>
|
||||
class template<br>
|
||||
function template<br>
|
||||
member function template<br>
|
||||
(via C++ Templates, Vandevoorde)<br>
|
||||
<br>
|
||||
class in namespace std: allocator, not std::allocator<br>
|
||||
<br>
|
||||
header file: iostream, not <iostream><br>
|
||||
<br>
|
||||
<br>
|
||||
<span class="emphasis"><em>General structure</em></span><br>
|
||||
<br>
|
||||
<set><br>
|
||||
<book><br>
|
||||
</book><br>
|
||||
<br>
|
||||
<book><br>
|
||||
<chapter><br>
|
||||
</chapter><br>
|
||||
</book><br>
|
||||
<br>
|
||||
<book><br>
|
||||
<part><br>
|
||||
<chapter><br>
|
||||
<section><br>
|
||||
</section><br>
|
||||
<br>
|
||||
<sect1><br>
|
||||
</sect1><br>
|
||||
<br>
|
||||
<sect1><br>
|
||||
<sect2><br>
|
||||
</sect2><br>
|
||||
</sect1><br>
|
||||
</chapter><br>
|
||||
<br>
|
||||
<chapter><br>
|
||||
</chapter><br>
|
||||
</part><br>
|
||||
</book><br>
|
||||
<br>
|
||||
</set><br>
|
||||
</p></div></div><div class="section" title="Markup By Example"><div class="titlepage"><div><div><h4 class="title"><a name="docbook.markup"></a>Markup By Example</h4></div></div></div><p>
|
||||
Complete details on Docbook markup can be found in the DocBook
|
||||
Element Reference,
|
||||
<a class="link" href="http://www.docbook.org/tdg/en/html/part2.html">online</a>.
|
||||
<a class="link" href="http://www.docbook.org/tdg/en/html/part2.html" target="_top">online</a>.
|
||||
An incomplete reference for HTML to Docbook conversion is
|
||||
detailed in the table below.
|
||||
</p><div class="table"><a id="id565901"/><p class="title"><strong>Table B.4. HTML to Docbook XML Markup Comparison</strong></p><div class="table-contents"><table summary="HTML to Docbook XML Markup Comparison" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/></colgroup><thead><tr><th style="text-align: left">HTML</th><th style="text-align: left">Docbook</th></tr></thead><tbody><tr><td style="text-align: left"><p></td><td style="text-align: left"><para></td></tr><tr><td style="text-align: left"><pre></td><td style="text-align: left"><computeroutput>, <programlisting>,
|
||||
<literallayout></td></tr><tr><td style="text-align: left"><ul></td><td style="text-align: left"><itemizedlist></td></tr><tr><td style="text-align: left"><ol></td><td style="text-align: left"><orderedlist></td></tr><tr><td style="text-align: left"><il></td><td style="text-align: left"><listitem></td></tr><tr><td style="text-align: left"><dl></td><td style="text-align: left"><variablelist></td></tr><tr><td style="text-align: left"><dt></td><td style="text-align: left"><term></td></tr><tr><td style="text-align: left"><dd></td><td style="text-align: left"><listitem></td></tr><tr><td style="text-align: left"><a href=""></td><td style="text-align: left"><ulink url=""></td></tr><tr><td style="text-align: left"><code></td><td style="text-align: left"><literal>, <programlisting></td></tr><tr><td style="text-align: left"><strong></td><td style="text-align: left"><emphasis></td></tr><tr><td style="text-align: left"><em></td><td style="text-align: left"><emphasis></td></tr><tr><td style="text-align: left">"</td><td style="text-align: left"><quote></td></tr></tbody></table></div></div><br class="table-break"/><p>
|
||||
</p><div class="table"><a name="id679219"></a><p class="title"><b>Table B.4. HTML to Docbook XML Markup Comparison</b></p><div class="table-contents"><table summary="HTML to Docbook XML Markup Comparison" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"></colgroup><thead><tr><th align="left">HTML</th><th align="left">Docbook</th></tr></thead><tbody><tr><td align="left"><p></td><td align="left"><para></td></tr><tr><td align="left"><pre></td><td align="left"><computeroutput>, <programlisting>,
|
||||
<literallayout></td></tr><tr><td align="left"><ul></td><td align="left"><itemizedlist></td></tr><tr><td align="left"><ol></td><td align="left"><orderedlist></td></tr><tr><td align="left"><il></td><td align="left"><listitem></td></tr><tr><td align="left"><dl></td><td align="left"><variablelist></td></tr><tr><td align="left"><dt></td><td align="left"><term></td></tr><tr><td align="left"><dd></td><td align="left"><listitem></td></tr><tr><td align="left"><a href=""></td><td align="left"><ulink url=""></td></tr><tr><td align="left"><code></td><td align="left"><literal>, <programlisting></td></tr><tr><td align="left"><strong></td><td align="left"><emphasis></td></tr><tr><td align="left"><em></td><td align="left"><emphasis></td></tr><tr><td align="left">"</td><td align="left"><quote></td></tr></tbody></table></div></div><br class="table-break"><p>
|
||||
And examples of detailed markup for which there are no real HTML
|
||||
equivalents are listed in the table below.
|
||||
</p><div class="table"><a id="id566102"/><p class="title"><strong>Table B.5. Docbook XML Element Use</strong></p><div class="table-contents"><table summary="Docbook XML Element Use" border="1"><colgroup><col style="text-align: left" class="c1"/><col style="text-align: left" class="c2"/></colgroup><thead><tr><th style="text-align: left">Element</th><th style="text-align: left">Use</th></tr></thead><tbody><tr><td style="text-align: left"><structname></td><td style="text-align: left"><structname>char_traits</structname></td></tr><tr><td style="text-align: left"><classname></td><td style="text-align: left"><classname>string</classname></td></tr><tr><td style="text-align: left"><function></td><td style="text-align: left">
|
||||
</p><div class="table"><a name="id679421"></a><p class="title"><b>Table B.5. Docbook XML Element Use</b></p><div class="table-contents"><table summary="Docbook XML Element Use" border="1"><colgroup><col align="left" class="c1"><col align="left" class="c2"></colgroup><thead><tr><th align="left">Element</th><th align="left">Use</th></tr></thead><tbody><tr><td align="left"><structname></td><td align="left"><structname>char_traits</structname></td></tr><tr><td align="left"><classname></td><td align="left"><classname>string</classname></td></tr><tr><td align="left"><function></td><td align="left">
|
||||
<p><function>clear()</function></p>
|
||||
<p><function>fs.clear()</function></p>
|
||||
</td></tr><tr><td style="text-align: left"><type></td><td style="text-align: left"><type>long long</type></td></tr><tr><td style="text-align: left"><varname></td><td style="text-align: left"><varname>fs</varname></td></tr><tr><td style="text-align: left"><literal></td><td style="text-align: left">
|
||||
</td></tr><tr><td align="left"><type></td><td align="left"><type>long long</type></td></tr><tr><td align="left"><varname></td><td align="left"><varname>fs</varname></td></tr><tr><td align="left"><literal></td><td align="left">
|
||||
<p><literal>-Weffc++</literal></p>
|
||||
<p><literal>rel_ops</literal></p>
|
||||
</td></tr><tr><td style="text-align: left"><constant></td><td style="text-align: left">
|
||||
</td></tr><tr><td align="left"><constant></td><td align="left">
|
||||
<p><constant>_GNU_SOURCE</constant></p>
|
||||
<p><constant>3.0</constant></p>
|
||||
</td></tr><tr><td style="text-align: left"><command></td><td style="text-align: left"><command>g++</command></td></tr><tr><td style="text-align: left"><errortext></td><td style="text-align: left"><errortext>In instantiation of</errortext></td></tr><tr><td style="text-align: left"><filename></td><td style="text-align: left">
|
||||
</td></tr><tr><td align="left"><command></td><td align="left"><command>g++</command></td></tr><tr><td align="left"><errortext></td><td align="left"><errortext>In instantiation of</errortext></td></tr><tr><td align="left"><filename></td><td align="left">
|
||||
<p><filename class="headerfile">ctype.h</filename></p>
|
||||
<p><filename class="directory">/home/gcc/build</filename></p>
|
||||
<p><filename class="libraryfile">libstdc++.so</filename></p>
|
||||
</td></tr></tbody></table></div></div><br class="table-break"/></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="appendix_porting.html">Prev</a> </td><td align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td align="right"> <a accesskey="n" href="internals.html">Next</a></td></tr><tr><td align="left" valign="top">Appendix B.
|
||||
</td></tr></tbody></table></div></div><br class="table-break"></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_porting.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="internals.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix B.
|
||||
Porting and Maintenance
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Porting to New Hardware or Operating Systems</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Porting to New Hardware or Operating Systems</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,13 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Dynamic Memory</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="support.html" title="Chapter 4. Support"/><link rel="prev" href="support.html" title="Chapter 4. Support"/><link rel="next" href="termination.html" title="Termination"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Dynamic Memory</th></tr><tr><td align="left"><a accesskey="p" href="support.html">Prev</a> </td><th width="60%" align="center">Chapter 4.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Dynamic Memory</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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|
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,
|
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library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="support.html" title="Chapter 4. Support"><link rel="prev" href="support.html" title="Chapter 4. Support"><link rel="next" href="termination.html" title="Termination"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Dynamic Memory</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="support.html">Prev</a> </td><th width="60%" align="center">Chapter 4.
|
||||
Support
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="termination.html">Next</a></td></tr></table><hr/></div><div class="section" title="Dynamic Memory"><div class="titlepage"><div><div><h2 class="title"><a id="std.support.memory"/>Dynamic Memory</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="termination.html">Next</a></td></tr></table><hr></div><div class="section" title="Dynamic Memory"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.support.memory"></a>Dynamic Memory</h2></div></div></div><p>
|
||||
There are six flavors each of <code class="function">new</code> and
|
||||
<code class="function">delete</code>, so make certain that you're using the right
|
||||
ones. Here are quickie descriptions of <code class="function">new</code>:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
single object form, throwing a
|
||||
<code class="classname">bad_alloc</code> on errors; this is what most
|
||||
people are used to using
|
||||
@ -66,7 +74,7 @@
|
||||
</pre><p>
|
||||
<code class="classname">bad_alloc</code> is derived from the base <code class="classname">exception</code>
|
||||
class defined in Sect1 19.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="support.html">Prev</a> </td><td align="center"><a accesskey="u" href="support.html">Up</a></td><td align="right"> <a accesskey="n" href="termination.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 4.
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||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="support.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="support.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="termination.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 4.
|
||||
Support
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Termination</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Termination</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 25. Algorithms</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="ext_utilities.html" title="Chapter 24. Utilities"/><link rel="next" href="ext_numerics.html" title="Chapter 26. Numerics"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 25. Algorithms</th></tr><tr><td align="left"><a accesskey="p" href="ext_utilities.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 25. Algorithms</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="ext_utilities.html" title="Chapter 24. Utilities"><link rel="next" href="ext_numerics.html" title="Chapter 26. Numerics"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 25. Algorithms</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_utilities.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="ext_numerics.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 25. Algorithms"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.algorithms"/>Chapter 25. Algorithms</h2></div></div></div><p>25.1.6 (count, count_if) is extended with two more versions of count
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="ext_numerics.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 25. Algorithms"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.algorithms"></a>Chapter 25. Algorithms</h2></div></div></div><p>25.1.6 (count, count_if) is extended with two more versions of count
|
||||
and count_if. The standard versions return their results. The
|
||||
additional signatures return void, but take a final parameter by
|
||||
reference to which they assign their results, e.g.,
|
||||
@ -15,9 +23,9 @@
|
||||
copy_n (_InputIter first, _Size count, _OutputIter result);</pre><p>which copies the first 'count' elements at 'first' into 'result'.
|
||||
</p><p>25.3 (sorting 'n' heaps 'n' stuff) is extended with some helper
|
||||
predicates. Look in the doxygen-generated pages for notes on these.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="code">is_heap</code> tests whether or not a range is a heap.</p></li><li class="listitem"><p><code class="code">is_sorted</code> tests whether or not a range is sorted in
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">is_heap</code> tests whether or not a range is a heap.</p></li><li class="listitem"><p><code class="code">is_sorted</code> tests whether or not a range is sorted in
|
||||
nondescending order.</p></li></ul></div><p>25.3.8 (lexicographical_compare) is extended with
|
||||
</p><pre class="programlisting">
|
||||
lexicographical_compare_3way(_InputIter1 first1, _InputIter1 last1,
|
||||
_InputIter2 first2, _InputIter2 last2)</pre><p>which does... what?
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_utilities.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_numerics.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 24. Utilities </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 26. Numerics</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ext_utilities.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ext_numerics.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 24. Utilities </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 26. Numerics</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 16. Compile Time Checks</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="bk01pt03pr01.html" title=""/><link rel="next" href="debug_mode.html" title="Chapter 17. Debug Mode"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 16. Compile Time Checks</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03pr01.html">Prev</a> </td><th width="60%" align="center">Part III.
|
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ISO C++
|
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|
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|
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"><meta name="keywords" content="
|
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ISO C++
|
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,
|
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runtime
|
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,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="bk01pt03pr01.html" title=""><link rel="next" href="debug_mode.html" title="Chapter 17. Debug Mode"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 16. Compile Time Checks</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03pr01.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="debug_mode.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 16. Compile Time Checks"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.compile_checks"/>Chapter 16. Compile Time Checks</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="debug_mode.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 16. Compile Time Checks"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.compile_checks"></a>Chapter 16. Compile Time Checks</h2></div></div></div><p>
|
||||
Also known as concept checking.
|
||||
</p><p>In 1999, SGI added <span class="emphasis"><em>concept checkers</em></span> to their implementation
|
||||
of the STL: code which checked the template parameters of
|
||||
@ -19,7 +27,7 @@
|
||||
</p><p>The primary author of the checking code, Jeremy Siek, had already
|
||||
started work on a replacement implementation. The new code has been
|
||||
formally reviewed and accepted into
|
||||
<a class="link" href="http://www.boost.org/libs/concept_check/concept_check.htm">the
|
||||
<a class="link" href="http://www.boost.org/libs/concept_check/concept_check.htm" target="_top">the
|
||||
Boost libraries</a>, and we are pleased to incorporate it into the
|
||||
GNU C++ library.
|
||||
</p><p>The new version imposes a much smaller space overhead on the generated
|
||||
@ -37,4 +45,4 @@
|
||||
support for template parameter constraints based on concepts in the core
|
||||
language. This will obviate the need for the library-simulated concept
|
||||
checking described above.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03pr01.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="debug_mode.html">Next</a></td></tr><tr><td align="left" valign="top"> </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 17. Debug Mode</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03pr01.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="debug_mode.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 17. Debug Mode</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 30. Concurrency</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="ext_demangling.html" title="Chapter 29. Demangling"/><link rel="next" href="bk01pt03ch30s02.html" title="Implementation"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 30. Concurrency</th></tr><tr><td align="left"><a accesskey="p" href="ext_demangling.html">Prev</a> </td><th width="60%" align="center">Part III.
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|
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|
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ISO C++
|
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|
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|
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"><meta name="keywords" content="
|
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ISO C++
|
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,
|
||||
runtime
|
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,
|
||||
library
|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="ext_demangling.html" title="Chapter 29. Demangling"><link rel="next" href="bk01pt03ch30s02.html" title="Implementation"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 30. Concurrency</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_demangling.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="bk01pt03ch30s02.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 30. Concurrency"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.concurrency"/>Chapter 30. Concurrency</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="ext_concurrency.html#manual.ext.concurrency.design">Design</a></span></dt><dd><dl><dt><span class="section"><a href="ext_concurrency.html#manual.ext.concurrency.design.threads">Interface to Locks and Mutexes</a></span></dt><dt><span class="section"><a href="ext_concurrency.html#manual.ext.concurrency.design.atomics">Interface to Atomic Functions</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch30s02.html">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch30s02.html#manual.ext.concurrency.impl.atomic_fallbacks">Using Builtin Atomic Functions</a></span></dt><dt><span class="section"><a href="bk01pt03ch30s02.html#manual.ext.concurrency.impl.thread">Thread Abstraction</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch30s03.html">Use</a></span></dt></dl></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.concurrency.design"/>Design</h2></div></div></div><div class="section" title="Interface to Locks and Mutexes"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.design.threads"/>Interface to Locks and Mutexes</h3></div></div></div><p>The file <code class="filename"><ext/concurrence.h></code>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch30s02.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 30. Concurrency"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.concurrency"></a>Chapter 30. Concurrency</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="ext_concurrency.html#manual.ext.concurrency.design">Design</a></span></dt><dd><dl><dt><span class="section"><a href="ext_concurrency.html#manual.ext.concurrency.design.threads">Interface to Locks and Mutexes</a></span></dt><dt><span class="section"><a href="ext_concurrency.html#manual.ext.concurrency.design.atomics">Interface to Atomic Functions</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch30s02.html">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch30s02.html#manual.ext.concurrency.impl.atomic_fallbacks">Using Builtin Atomic Functions</a></span></dt><dt><span class="section"><a href="bk01pt03ch30s02.html#manual.ext.concurrency.impl.thread">Thread Abstraction</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch30s03.html">Use</a></span></dt></dl></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.concurrency.design"></a>Design</h2></div></div></div><div class="section" title="Interface to Locks and Mutexes"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.concurrency.design.threads"></a>Interface to Locks and Mutexes</h3></div></div></div><p>The file <code class="filename"><ext/concurrence.h></code>
|
||||
contains all the higher-level
|
||||
constructs for playing with threads. In contrast to the atomics layer,
|
||||
the concurrence layer consists largely of types. All types are defined within <code class="code">namespace __gnu_cxx</code>.
|
||||
@ -17,7 +29,7 @@ that support multiple threads.)
|
||||
available locking
|
||||
policies: <code class="code">_S_single</code>, <code class="code">_S_mutex</code>,
|
||||
and <code class="code">_S_atomic</code>.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="code">_S_single</code></p><p>Indicates single-threaded code that does not need locking.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">_S_single</code></p><p>Indicates single-threaded code that does not need locking.
|
||||
</p></li><li class="listitem"><p><code class="code">_S_mutex</code></p><p>Indicates multi-threaded code using thread-layer abstractions.
|
||||
</p></li><li class="listitem"><p><code class="code">_S_atomic</code></p><p>Indicates multi-threaded code using atomic operations.
|
||||
</p></li></ul></div><p>The compile-time constant <code class="code">__default_lock_policy</code> is set
|
||||
@ -33,7 +45,7 @@ critical sections, while retaining exception-safety.
|
||||
These types have been superseded in the ISO C++ 2011 standard by the
|
||||
mutex and lock types defined in the header
|
||||
<code class="filename"><mutex></code>.
|
||||
</p></div><div class="section" title="Interface to Atomic Functions"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.design.atomics"/>Interface to Atomic Functions</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Interface to Atomic Functions"><div class="titlepage"><div><div><h3 class="title"><a name="manual.ext.concurrency.design.atomics"></a>Interface to Atomic Functions</h3></div></div></div><p>
|
||||
Two functions and one type form the base of atomic support.
|
||||
</p><p>The type <code class="code">_Atomic_word</code> is a signed integral type
|
||||
supporting atomic operations.
|
||||
@ -47,7 +59,7 @@ void
|
||||
__atomic_add_dispatch(volatile _Atomic_word*, int);
|
||||
</pre><p>Both of these functions are declared in the header file
|
||||
<ext/atomicity.h>, and are in <code class="code">namespace __gnu_cxx</code>.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<code class="code">
|
||||
__exchange_and_add_dispatch
|
||||
</code>
|
||||
@ -66,7 +78,7 @@ __exchange_and_add_dispatch
|
||||
</code>
|
||||
</p><p>
|
||||
Calls through to either of:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="code">__exchange_and_add</code>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">__exchange_and_add</code>
|
||||
</p><p>Multi-thread version. Inlined if compiler-generated builtin atomics
|
||||
can be used, otherwise resolved at link time to a non-builtin code
|
||||
sequence.
|
||||
@ -91,4 +103,4 @@ _GLIBCXX_WRITE_MEM_BARRIER
|
||||
</p><p>
|
||||
Which expand to the appropriate write and read barrier required by the
|
||||
host hardware and operating system.
|
||||
</p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_demangling.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch30s02.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 29. Demangling </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Implementation</td></tr></table></div></body></html>
|
||||
</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ext_demangling.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch30s02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 29. Demangling </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Implementation</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 23. HP/SGI Extensions</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="policy_data_structures_biblio.html" title="Acknowledgments"/><link rel="next" href="bk01pt03ch23s02.html" title="Deprecated"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 23. HP/SGI Extensions</th></tr><tr><td align="left"><a accesskey="p" href="policy_data_structures_biblio.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 23. HP/SGI Extensions</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="policy_data_structures_biblio.html" title="Acknowledgments"><link rel="next" href="bk01pt03ch23s02.html" title="Deprecated"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 23. HP/SGI Extensions</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="policy_data_structures_biblio.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="bk01pt03ch23s02.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 23. HP/SGI Extensions"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.containers"/>Chapter 23. HP/SGI Extensions</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="ext_containers.html#manual.ext.containers.sgi">Backwards Compatibility</a></span></dt><dt><span class="section"><a href="bk01pt03ch23s02.html">Deprecated</a></span></dt></dl></div><div class="section" title="Backwards Compatibility"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.containers.sgi"/>Backwards Compatibility</h2></div></div></div><p>A few extensions and nods to backwards-compatibility have
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch23s02.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 23. HP/SGI Extensions"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.containers"></a>Chapter 23. HP/SGI Extensions</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="ext_containers.html#manual.ext.containers.sgi">Backwards Compatibility</a></span></dt><dt><span class="section"><a href="bk01pt03ch23s02.html">Deprecated</a></span></dt></dl></div><div class="section" title="Backwards Compatibility"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.containers.sgi"></a>Backwards Compatibility</h2></div></div></div><p>A few extensions and nods to backwards-compatibility have
|
||||
been made with containers. Those dealing with older SGI-style
|
||||
allocators are dealt with elsewhere. The remaining ones all deal
|
||||
with bits:
|
||||
@ -39,4 +47,4 @@
|
||||
</p><pre class="programlisting">
|
||||
size_t _Find_first() const;
|
||||
size_t _Find_next (size_t prev) const;</pre><p>The same caveat given for the _Unchecked_* functions applies here also.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="policy_data_structures_biblio.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch23s02.html">Next</a></td></tr><tr><td align="left" valign="top">Acknowledgments </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Deprecated</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="policy_data_structures_biblio.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch23s02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Acknowledgments </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Deprecated</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 29. Demangling</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="ext_io.html" title="Chapter 28. Input and Output"/><link rel="next" href="ext_concurrency.html" title="Chapter 30. Concurrency"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 29. Demangling</th></tr><tr><td align="left"><a accesskey="p" href="ext_io.html">Prev</a> </td><th width="60%" align="center">Part III.
|
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 29. Demangling</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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|
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|
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|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="ext_io.html" title="Chapter 28. Input and Output"><link rel="next" href="ext_concurrency.html" title="Chapter 30. Concurrency"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 29. Demangling</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_io.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="ext_concurrency.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 29. Demangling"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.demangle"/>Chapter 29. Demangling</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="ext_concurrency.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 29. Demangling"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.demangle"></a>Chapter 29. Demangling</h2></div></div></div><p>
|
||||
Transforming C++ ABI identifiers (like RTTI symbols) into the
|
||||
original C++ source identifiers is called
|
||||
<span class="quote">“<span class="quote">demangling.</span>”</span>
|
||||
</p><p>
|
||||
If you have read the <a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01115.html">source
|
||||
If you have read the <a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01115.html" target="_top">source
|
||||
documentation for <code class="code">namespace abi</code></a> then you are
|
||||
aware of the cross-vendor C++ ABI in use by GCC. One of the
|
||||
exposed functions is used for demangling,
|
||||
@ -71,4 +79,4 @@ int main()
|
||||
be writing C++ in order to demangle C++. (That also means we have to
|
||||
use crummy memory management facilities, so don't forget to free()
|
||||
the returned char array.)
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_io.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_concurrency.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 28. Input and Output </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 30. Concurrency</td></tr></table></div></body></html>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ext_io.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ext_concurrency.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 28. Input and Output </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 30. Concurrency</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,25 +1,33 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 28. Input and Output</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="ext_iterators.html" title="Chapter 27. Iterators"/><link rel="next" href="ext_demangling.html" title="Chapter 29. Demangling"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 28. Input and Output</th></tr><tr><td align="left"><a accesskey="p" href="ext_iterators.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
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|
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|
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|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="ext_iterators.html" title="Chapter 27. Iterators"><link rel="next" href="ext_demangling.html" title="Chapter 29. Demangling"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 28. Input and Output</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_iterators.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="ext_demangling.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 28. Input and Output"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.io"/>Chapter 28. Input and Output</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="ext_io.html#manual.ext.io.filebuf_derived">Derived filebufs</a></span></dt></dl></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="ext_demangling.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 28. Input and Output"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.io"></a>Chapter 28. Input and Output</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="ext_io.html#manual.ext.io.filebuf_derived">Derived filebufs</a></span></dt></dl></div><p>
|
||||
Extensions allowing <code class="code">filebuf</code>s to be constructed from
|
||||
"C" types like FILE*s and file descriptors.
|
||||
</p><div class="section" title="Derived filebufs"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.io.filebuf_derived"/>Derived filebufs</h2></div></div></div><p>The v2 library included non-standard extensions to construct
|
||||
</p><div class="section" title="Derived filebufs"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.io.filebuf_derived"></a>Derived filebufs</h2></div></div></div><p>The v2 library included non-standard extensions to construct
|
||||
<code class="code">std::filebuf</code>s from C stdio types such as
|
||||
<code class="code">FILE*</code>s and POSIX file descriptors.
|
||||
Today the recommended way to use stdio types with libstdc++
|
||||
IOStreams is via the <code class="code">stdio_filebuf</code> class (see below),
|
||||
but earlier releases provided slightly different mechanisms.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>3.0.x <code class="code">filebuf</code>s have another ctor with this signature:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>3.0.x <code class="code">filebuf</code>s have another ctor with this signature:
|
||||
<code class="code">basic_filebuf(__c_file_type*, ios_base::openmode, int_type);
|
||||
</code>
|
||||
This comes in very handy in a number of places, such as
|
||||
attaching Unix sockets, pipes, and anything else which uses file
|
||||
descriptors, into the IOStream buffering classes. The three
|
||||
arguments are as follows:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="code">__c_file_type* F </code>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p><code class="code">__c_file_type* F </code>
|
||||
// the __c_file_type typedef usually boils down to stdio's FILE
|
||||
</p></li><li class="listitem"><p><code class="code">ios_base::openmode M </code>
|
||||
// same as all the other uses of openmode
|
||||
@ -39,7 +47,7 @@
|
||||
the <code class="code">fd()</code> function were removed from the standard
|
||||
filebuf. Instead, <code class="code"><ext/stdio_filebuf.h></code> contains
|
||||
a derived class called
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00074.html"><code class="code">__gnu_cxx::stdio_filebuf</code></a>.
|
||||
<a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00074.html" target="_top"><code class="code">__gnu_cxx::stdio_filebuf</code></a>.
|
||||
This class can be constructed from a C <code class="code">FILE*</code> or a file
|
||||
descriptor, and provides the <code class="code">fd()</code> function.
|
||||
</p></li></ul></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_iterators.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_demangling.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 27. Iterators </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 29. Demangling</td></tr></table></div></body></html>
|
||||
</p></li></ul></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ext_iterators.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ext_demangling.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 27. Iterators </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 29. Demangling</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 27. Iterators</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="ext_numerics.html" title="Chapter 26. Numerics"/><link rel="next" href="ext_io.html" title="Chapter 28. Input and Output"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 27. Iterators</th></tr><tr><td align="left"><a accesskey="p" href="ext_numerics.html">Prev</a> </td><th width="60%" align="center">Part III.
|
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|
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|
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|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="ext_numerics.html" title="Chapter 26. Numerics"><link rel="next" href="ext_io.html" title="Chapter 28. Input and Output"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 27. Iterators</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_numerics.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="ext_io.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 27. Iterators"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.iterators"/>Chapter 27. Iterators</h2></div></div></div><p>24.3.2 describes <code class="code">struct iterator</code>, which didn't exist in the
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="ext_io.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 27. Iterators"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.iterators"></a>Chapter 27. Iterators</h2></div></div></div><p>24.3.2 describes <code class="code">struct iterator</code>, which didn't exist in the
|
||||
original HP STL implementation (the language wasn't rich enough at the
|
||||
time). For backwards compatibility, base classes are provided which
|
||||
declare the same nested typedefs:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>input_iterator</p></li><li class="listitem"><p>output_iterator</p></li><li class="listitem"><p>forward_iterator</p></li><li class="listitem"><p>bidirectional_iterator</p></li><li class="listitem"><p>random_access_iterator</p></li></ul></div><p>24.3.4 describes iterator operation <code class="code">distance</code>, which takes
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>input_iterator</p></li><li class="listitem"><p>output_iterator</p></li><li class="listitem"><p>forward_iterator</p></li><li class="listitem"><p>bidirectional_iterator</p></li><li class="listitem"><p>random_access_iterator</p></li></ul></div><p>24.3.4 describes iterator operation <code class="code">distance</code>, which takes
|
||||
two iterators and returns a result. It is extended by another signature
|
||||
which takes two iterators and a reference to a result. The result is
|
||||
modified, and the function returns nothing.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_numerics.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_io.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 26. Numerics </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 28. Input and Output</td></tr></table></div></body></html>
|
||||
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|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 26. Numerics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="ext_algorithms.html" title="Chapter 25. Algorithms"/><link rel="next" href="ext_iterators.html" title="Chapter 27. Iterators"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 26. Numerics</th></tr><tr><td align="left"><a accesskey="p" href="ext_algorithms.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
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|
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|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
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,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="ext_algorithms.html" title="Chapter 25. Algorithms"><link rel="next" href="ext_iterators.html" title="Chapter 27. Iterators"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 26. Numerics</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_algorithms.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="ext_iterators.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 26. Numerics"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.numerics"/>Chapter 26. Numerics</h2></div></div></div><p>26.4, the generalized numeric operations such as <code class="code">accumulate</code>,
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="ext_iterators.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 26. Numerics"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.numerics"></a>Chapter 26. Numerics</h2></div></div></div><p>26.4, the generalized numeric operations such as <code class="code">accumulate</code>,
|
||||
are extended with the following functions:
|
||||
</p><pre class="programlisting">
|
||||
power (x, n);
|
||||
@ -15,10 +23,10 @@
|
||||
The operation functor must be associative.
|
||||
</p><p>The <code class="code">iota</code> function wins the award for Extension With the
|
||||
Coolest Name (the name comes from Ken Iverson's APL language.) As
|
||||
described in the <a class="link" href="http://www.sgi.com/tech/stl/iota.html">SGI
|
||||
described in the <a class="link" href="http://www.sgi.com/tech/stl/iota.html" target="_top">SGI
|
||||
documentation</a>, it "assigns sequentially increasing values to a range.
|
||||
That is, it assigns <code class="code">value</code> to <code class="code">*first</code>,
|
||||
<code class="code">value + 1</code> to<code class="code"> *(first + 1)</code> and so on."
|
||||
</p><pre class="programlisting">
|
||||
void iota(_ForwardIter first, _ForwardIter last, _Tp value);</pre><p>The <code class="code">iota</code> function is included in the ISO C++ 2011 standard.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="ext_algorithms.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_iterators.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 25. Algorithms </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 27. Iterators</td></tr></table></div></body></html>
|
||||
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|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 24. Utilities</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="bk01pt03ch23s02.html" title="Deprecated"/><link rel="next" href="ext_algorithms.html" title="Chapter 25. Algorithms"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 24. Utilities</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch23s02.html">Prev</a> </td><th width="60%" align="center">Part III.
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|
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|
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"><meta name="keywords" content="
|
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ISO C++
|
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,
|
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|
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|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="bk01pt03ch23s02.html" title="Deprecated"><link rel="next" href="ext_algorithms.html" title="Chapter 25. Algorithms"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 24. Utilities</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch23s02.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
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|
||||
|
||||
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|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="ext_algorithms.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 24. Utilities"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.util"></a>Chapter 24. Utilities</h2></div></div></div><p>
|
||||
The <code class="filename"><functional></code> header
|
||||
contains many additional functors
|
||||
and helper functions, extending section 20.3. They are
|
||||
implemented in the file stl_function.h:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="code">identity_element</code> for addition and multiplication.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">identity_element</code> for addition and multiplication.
|
||||
</p></li><li class="listitem"><p>The functor <code class="code">identity</code>, whose <code class="code">operator()</code>
|
||||
returns the argument unchanged.
|
||||
</p></li><li class="listitem"><p>Composition functors <code class="code">unary_function</code> and
|
||||
@ -39,4 +47,4 @@ get_temporary_buffer(5, (int*)0);
|
||||
</p><p>
|
||||
The specialized algorithms of section 20.4.4 are extended with
|
||||
<code class="code">uninitialized_copy_n</code>.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch23s02.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_algorithms.html">Next</a></td></tr><tr><td align="left" valign="top">Deprecated </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 25. Algorithms</td></tr></table></div></body></html>
|
||||
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|
||||
|
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|
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||||
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|
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"><meta name="keywords" content="
|
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ISO C++
|
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,
|
||||
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|
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|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="localization.html" title="Chapter 8. Localization"><link rel="prev" href="localization.html" title="Chapter 8. Localization"><link rel="next" href="containers.html" title="Chapter 9. Containers"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Facets</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="localization.html">Prev</a> </td><th width="60%" align="center">Chapter 8.
|
||||
Localization
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="containers.html">Next</a></td></tr></table><hr/></div><div class="section" title="Facets"><div class="titlepage"><div><div><h2 class="title"><a id="std.localization.facet"/>Facets</h2></div></div></div><div class="section" title="ctype"><div class="titlepage"><div><div><h3 class="title"><a id="std.localization.facet.ctype"/>ctype</h3></div></div></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a id="facet.ctype.impl"/>Implementation</h4></div></div></div><div class="section" title="Specializations"><div class="titlepage"><div><div><h5 class="title"><a id="id511845"/>Specializations</h5></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="containers.html">Next</a></td></tr></table><hr></div><div class="section" title="Facets"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.localization.facet"></a>Facets</h2></div></div></div><div class="section" title="ctype"><div class="titlepage"><div><div><h3 class="title"><a name="std.localization.facet.ctype"></a>ctype</h3></div></div></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a name="facet.ctype.impl"></a>Implementation</h4></div></div></div><div class="section" title="Specializations"><div class="titlepage"><div><div><h5 class="title"><a name="id625164"></a>Specializations</h5></div></div></div><p>
|
||||
For the required specialization codecvt<wchar_t, char, mbstate_t> ,
|
||||
conversions are made between the internal character set (always UCS4
|
||||
on GNU/Linux) and whatever the currently selected locale for the
|
||||
@ -28,7 +36,7 @@ to wchar_t and wcsrtombs for conversions between wchar_t and char.
|
||||
</p><p>
|
||||
Neither of these two required specializations deals with Unicode
|
||||
characters.
|
||||
</p></div></div><div class="section" title="Future"><div class="titlepage"><div><div><h4 class="title"><a id="facet.ctype.future"/>Future</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></div></div><div class="section" title="Future"><div class="titlepage"><div><div><h4 class="title"><a name="facet.ctype.future"></a>Future</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
How to deal with the global locale issue?
|
||||
</p></li><li class="listitem"><p>
|
||||
How to deal with different types than char, wchar_t? </p></li><li class="listitem"><p>
|
||||
@ -50,30 +58,30 @@ characters.
|
||||
</p></li><li class="listitem"><p>
|
||||
Rename abstract base class. See if just smash-overriding is a
|
||||
better approach. Clarify, add sanity to naming.
|
||||
</p></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a id="facet.ctype.biblio"/>Bibliography</h4></div></div></div><div class="biblioentry"><a id="id511970"/><p><span class="citetitle"><em class="citetitle">
|
||||
</p></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a name="facet.ctype.biblio"></a>Bibliography</h4></div></div></div><div class="biblioentry"><a name="id625288"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The GNU C Library
|
||||
</em>. </span><span class="author"><span class="firstname">Roland</span> <span class="surname">McGrath</span>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2007 FSF. </span><span class="pagenums">Chapters 6 Character Set Handling and 7 Locales and Internationalization. </span></p></div><div class="biblioentry"><a id="id512010"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="author"><span class="firstname">Roland</span> <span class="surname">McGrath</span>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2007 FSF. </span><span class="pagenums">Chapters 6 Character Set Handling and 7 Locales and Internationalization. </span></p></div><div class="biblioentry"><a name="id625328"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Correspondence
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2002 . </span></p></div><div class="biblioentry"><a id="id512036"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2002 . </span></p></div><div class="biblioentry"><a name="id625354"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 14882:1998 Programming languages - C++
|
||||
</em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a id="id512055"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a name="id625373"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 9899:1999 Programming languages - C
|
||||
</em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry" title="The Open Group Base Specifications, Issue 6 (IEEE Std. 1003.1-2004)"><a id="id512074"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.unix.org/version3/ieee_std.html">
|
||||
</em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry" title="The Open Group Base Specifications, Issue 6 (IEEE Std. 1003.1-2004)"><a name="id625392"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.unix.org/version3/ieee_std.html" target="_top">
|
||||
The Open Group Base Specifications, Issue 6 (IEEE Std. 1003.1-2004)
|
||||
</a>
|
||||
</em>. </span><span class="copyright">Copyright © 1999
|
||||
The Open Group/The Institute of Electrical and Electronics Engineers, Inc.. </span></p></div><div class="biblioentry"><a id="id512101"/><p><span class="citetitle"><em class="citetitle">
|
||||
</i>. </span><span class="copyright">Copyright © 1999
|
||||
The Open Group/The Institute of Electrical and Electronics Engineers, Inc.. </span></p></div><div class="biblioentry"><a name="id625419"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The C++ Programming Language, Special Edition
|
||||
</em>. </span><span class="author"><span class="firstname">Bjarne</span> <span class="surname">Stroustrup</span>. </span><span class="copyright">Copyright © 2000 Addison Wesley, Inc.. </span><span class="pagenums">Appendix D. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley
|
||||
. </span></span></p></div><div class="biblioentry"><a id="id512139"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></span></p></div><div class="biblioentry"><a name="id625457"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Standard C++ IOStreams and Locales
|
||||
</em>. </span><span class="subtitle">
|
||||
Advanced Programmer's Guide and Reference
|
||||
. </span><span class="author"><span class="firstname">Angelika</span> <span class="surname">Langer</span>. </span><span class="author"><span class="firstname">Klaus</span> <span class="surname">Kreft</span>. </span><span class="copyright">Copyright © 2000 Addison Wesley Longman, Inc.. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley Longman
|
||||
. </span></span></p></div></div></div><div class="section" title="codecvt"><div class="titlepage"><div><div><h3 class="title"><a id="std.localization.facet.codecvt"/>codecvt</h3></div></div></div><p>
|
||||
. </span></span></p></div></div></div><div class="section" title="codecvt"><div class="titlepage"><div><div><h3 class="title"><a name="std.localization.facet.codecvt"></a>codecvt</h3></div></div></div><p>
|
||||
The standard class codecvt attempts to address conversions between
|
||||
different character encoding schemes. In particular, the standard
|
||||
attempts to detail conversions between the implementation-defined wide
|
||||
@ -87,7 +95,7 @@ including Unicode and UTF8. Design issues and requirements are
|
||||
addressed, and examples of correct usage for both the required
|
||||
specializations for wide and narrow characters and the
|
||||
implementation-provided extended functionality are given.
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a id="facet.codecvt.req"/>Requirements</h4></div></div></div><p>
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a name="facet.codecvt.req"></a>Requirements</h4></div></div></div><p>
|
||||
Around page 425 of the C++ Standard, this charming heading comes into view:
|
||||
</p><div class="blockquote"><blockquote class="blockquote"><p>
|
||||
22.2.1.5 - Template class codecvt
|
||||
@ -133,7 +141,7 @@ third template parameter, stateT.</p><p>
|
||||
Two: The required conversions, by specifying mbstate_t as the third
|
||||
template parameter, imply an implementation strategy that is mostly
|
||||
(or wholly) based on the underlying C library, and the functions
|
||||
mcsrtombs and wcsrtombs in particular.</p></div><div class="section" title="Design"><div class="titlepage"><div><div><h4 class="title"><a id="facet.codecvt.design"/>Design</h4></div></div></div><div class="section" title="wchar_t Size"><div class="titlepage"><div><div><h5 class="title"><a id="codecvt.design.wchar_t_size"/><span class="type">wchar_t</span> Size</h5></div></div></div><p>
|
||||
mcsrtombs and wcsrtombs in particular.</p></div><div class="section" title="Design"><div class="titlepage"><div><div><h4 class="title"><a name="facet.codecvt.design"></a>Design</h4></div></div></div><div class="section" title="wchar_t Size"><div class="titlepage"><div><div><h5 class="title"><a name="codecvt.design.wchar_t_size"></a><span class="type">wchar_t</span> Size</h5></div></div></div><p>
|
||||
The simple implementation detail of wchar_t's size seems to
|
||||
repeatedly confound people. Many systems use a two byte,
|
||||
unsigned integral type to represent wide characters, and use an
|
||||
@ -145,7 +153,7 @@ mcsrtombs and wcsrtombs in particular.</p></div><div class="section" title="Desi
|
||||
size for the type wchar_t.
|
||||
</p><p>
|
||||
Thus, portable C++ code cannot assume a byte size (or endianness) either.
|
||||
</p></div><div class="section" title="Support for Unicode"><div class="titlepage"><div><div><h5 class="title"><a id="codecvt.design.unicode"/>Support for Unicode</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Support for Unicode"><div class="titlepage"><div><div><h5 class="title"><a name="codecvt.design.unicode"></a>Support for Unicode</h5></div></div></div><p>
|
||||
Probably the most frequently asked question about code conversion
|
||||
is: "So dudes, what's the deal with Unicode strings?"
|
||||
The dude part is optional, but apparently the usefulness of
|
||||
@ -162,7 +170,7 @@ mcsrtombs and wcsrtombs in particular.</p></div><div class="section" title="Desi
|
||||
needed is some kind of generalized type that accounts for the
|
||||
issues that abstract encodings will need. The minimum information
|
||||
that is required includes:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Identifiers for each of the codesets involved in the
|
||||
conversion. For example, using the iconv family of functions
|
||||
from the Single Unix Specification (what used to be called
|
||||
@ -213,7 +221,7 @@ mechanism may be required.
|
||||
Some way to enforce strict type checking on the internal and
|
||||
external types. As part of this, the size of the internal and
|
||||
external types will need to be known.
|
||||
</p></li></ul></div></div><div class="section" title="Other Issues"><div class="titlepage"><div><div><h5 class="title"><a id="codecvt.design.issues"/>Other Issues</h5></div></div></div><p>
|
||||
</p></li></ul></div></div><div class="section" title="Other Issues"><div class="titlepage"><div><div><h5 class="title"><a name="codecvt.design.issues"></a>Other Issues</h5></div></div></div><p>
|
||||
In addition, multi-threaded and multi-locale environments also impact
|
||||
the design and requirements for code conversions. In particular, they
|
||||
affect the required specialization codecvt<wchar_t, char, mbstate_t>
|
||||
@ -245,7 +253,7 @@ For the required specialization codecvt<wchar_t, char, mbstate_t> ,
|
||||
conversions are made between the internal character set (always UCS4
|
||||
on GNU/Linux) and whatever the currently selected locale for the
|
||||
LC_CTYPE category implements.
|
||||
</p></div></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a id="facet.codecvt.impl"/>Implementation</h4></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a name="facet.codecvt.impl"></a>Implementation</h4></div></div></div><p>
|
||||
The two required specializations are implemented as follows:
|
||||
</p><p>
|
||||
<code class="code">
|
||||
@ -347,7 +355,7 @@ Definitions for all the required codecvt member functions are provided
|
||||
for this specialization, and usage of codecvt<internal character type,
|
||||
external character type, encoding_state> is consistent with other
|
||||
codecvt usage.
|
||||
</p></div><div class="section" title="Use"><div class="titlepage"><div><div><h4 class="title"><a id="facet.codecvt.use"/>Use</h4></div></div></div><p>A conversions involving string literal.</p><pre class="programlisting">
|
||||
</p></div><div class="section" title="Use"><div class="titlepage"><div><div><h4 class="title"><a name="facet.codecvt.use"></a>Use</h4></div></div></div><p>A conversions involving string literal.</p><pre class="programlisting">
|
||||
typedef codecvt_base::result result;
|
||||
typedef unsigned short unicode_t;
|
||||
typedef unicode_t int_type;
|
||||
@ -384,14 +392,14 @@ codecvt usage.
|
||||
VERIFY( !int_traits::compare(i_arr, i_lit, size) );
|
||||
VERIFY( efrom_next == e_lit + size );
|
||||
VERIFY( ito_next == i_arr + size );
|
||||
</pre></div><div class="section" title="Future"><div class="titlepage"><div><div><h4 class="title"><a id="facet.codecvt.future"/>Future</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</pre></div><div class="section" title="Future"><div class="titlepage"><div><div><h4 class="title"><a name="facet.codecvt.future"></a>Future</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
a. things that are sketchy, or remain unimplemented:
|
||||
do_encoding, max_length and length member functions
|
||||
are only weakly implemented. I have no idea how to do
|
||||
this correctly, and in a generic manner. Nathan?
|
||||
</p></li><li class="listitem"><p>
|
||||
b. conversions involving std::string
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>
|
||||
how should operators != and == work for string of
|
||||
different/same encoding?
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -401,7 +409,7 @@ codecvt usage.
|
||||
conversions between narrow, wide, and unicode strings
|
||||
</p></li></ul></div></li><li class="listitem"><p>
|
||||
c. conversions involving std::filebuf and std::ostream
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>
|
||||
how to initialize the state object in a
|
||||
standards-conformant manner?
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -410,50 +418,50 @@ codecvt usage.
|
||||
</p></li><li class="listitem"><p>
|
||||
wchar_t/char internal buffers and conversions between
|
||||
internal/external buffers?
|
||||
</p></li></ul></div></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a id="facet.codecvt.biblio"/>Bibliography</h4></div></div></div><div class="biblioentry"><a id="id512789"/><p><span class="citetitle"><em class="citetitle">
|
||||
</p></li></ul></div></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a name="facet.codecvt.biblio"></a>Bibliography</h4></div></div></div><div class="biblioentry"><a name="id626108"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The GNU C Library
|
||||
</em>. </span><span class="author"><span class="firstname">Roland</span> <span class="surname">McGrath</span>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2007 FSF. </span><span class="pagenums">
|
||||
Chapters 6 Character Set Handling and 7 Locales and Internationalization
|
||||
. </span></p></div><div class="biblioentry"><a id="id512829"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></p></div><div class="biblioentry"><a name="id626147"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Correspondence
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2002 . </span></p></div><div class="biblioentry"><a id="id512855"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2002 . </span></p></div><div class="biblioentry"><a name="id626173"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 14882:1998 Programming languages - C++
|
||||
</em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a id="id512874"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a name="id626192"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 9899:1999 Programming languages - C
|
||||
</em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry" title="System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)"><a id="id512893"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.opengroup.org/austin">
|
||||
</em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry" title="System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)"><a name="id626211"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.opengroup.org/austin" target="_top">
|
||||
System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)
|
||||
</a>
|
||||
</em>. </span><span class="copyright">Copyright © 2008
|
||||
</i>. </span><span class="copyright">Copyright © 2008
|
||||
The Open Group/The Institute of Electrical and Electronics
|
||||
Engineers, Inc.
|
||||
. </span></p></div><div class="biblioentry"><a id="id512920"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></p></div><div class="biblioentry"><a name="id626238"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The C++ Programming Language, Special Edition
|
||||
</em>. </span><span class="author"><span class="firstname">Bjarne</span> <span class="surname">Stroustrup</span>. </span><span class="copyright">Copyright © 2000 Addison Wesley, Inc.. </span><span class="pagenums">Appendix D. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley
|
||||
. </span></span></p></div><div class="biblioentry"><a id="id512958"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></span></p></div><div class="biblioentry"><a name="id626276"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Standard C++ IOStreams and Locales
|
||||
</em>. </span><span class="subtitle">
|
||||
Advanced Programmer's Guide and Reference
|
||||
. </span><span class="author"><span class="firstname">Angelika</span> <span class="surname">Langer</span>. </span><span class="author"><span class="firstname">Klaus</span> <span class="surname">Kreft</span>. </span><span class="copyright">Copyright © 2000 Addison Wesley Longman, Inc.. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley Longman
|
||||
. </span></span></p></div><div class="biblioentry" title="A brief description of Normative Addendum 1"><a id="id513005"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.lysator.liu.se/c/na1.html">
|
||||
. </span></span></p></div><div class="biblioentry" title="A brief description of Normative Addendum 1"><a name="id626324"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.lysator.liu.se/c/na1.html" target="_top">
|
||||
A brief description of Normative Addendum 1
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Clive</span> <span class="surname">Feather</span>. </span><span class="pagenums">Extended Character Sets. </span></p></div><div class="biblioentry" title="The Unicode HOWTO"><a id="id513032"/><p><span class="title"><em>
|
||||
<a class="link" href="http://tldp.org/HOWTO/Unicode-HOWTO.html">
|
||||
</i>. </span><span class="author"><span class="firstname">Clive</span> <span class="surname">Feather</span>. </span><span class="pagenums">Extended Character Sets. </span></p></div><div class="biblioentry" title="The Unicode HOWTO"><a name="id626351"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://tldp.org/HOWTO/Unicode-HOWTO.html" target="_top">
|
||||
The Unicode HOWTO
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Bruno</span> <span class="surname">Haible</span>. </span></p></div><div class="biblioentry" title="UTF-8 and Unicode FAQ for Unix/Linux"><a id="id513056"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.cl.cam.ac.uk/~mgk25/unicode.html">
|
||||
</i>. </span><span class="author"><span class="firstname">Bruno</span> <span class="surname">Haible</span>. </span></p></div><div class="biblioentry" title="UTF-8 and Unicode FAQ for Unix/Linux"><a name="id626374"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.cl.cam.ac.uk/~mgk25/unicode.html" target="_top">
|
||||
UTF-8 and Unicode FAQ for Unix/Linux
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Markus</span> <span class="surname">Khun</span>. </span></p></div></div></div><div class="section" title="messages"><div class="titlepage"><div><div><h3 class="title"><a id="manual.localization.facet.messages"/>messages</h3></div></div></div><p>
|
||||
</i>. </span><span class="author"><span class="firstname">Markus</span> <span class="surname">Khun</span>. </span></p></div></div></div><div class="section" title="messages"><div class="titlepage"><div><div><h3 class="title"><a name="manual.localization.facet.messages"></a>messages</h3></div></div></div><p>
|
||||
The std::messages facet implements message retrieval functionality
|
||||
equivalent to Java's java.text.MessageFormat .using either GNU gettext
|
||||
or IEEE 1003.1-200 functions.
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a id="facet.messages.req"/>Requirements</h4></div></div></div><p>
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a name="facet.messages.req"></a>Requirements</h4></div></div></div><p>
|
||||
The std::messages facet is probably the most vaguely defined facet in
|
||||
the standard library. It's assumed that this facility was built into
|
||||
the standard library in order to convert string literals from one
|
||||
@ -502,7 +510,7 @@ be found, returns dfault.
|
||||
-6- Effects: Releases unspecified resources associated with cat.
|
||||
-7- Notes: The limit on such resources, if any, is implementation-defined.
|
||||
</em></span>
|
||||
</p></blockquote></div></div><div class="section" title="Design"><div class="titlepage"><div><div><h4 class="title"><a id="facet.messages.design"/>Design</h4></div></div></div><p>
|
||||
</p></blockquote></div></div><div class="section" title="Design"><div class="titlepage"><div><div><h4 class="title"><a name="facet.messages.design"></a>Design</h4></div></div></div><p>
|
||||
A couple of notes on the standard.
|
||||
</p><p>
|
||||
First, why is <code class="code">messages_base::catalog</code> specified as a typedef
|
||||
@ -535,7 +543,7 @@ It is implicitly assumed that the locale for the default message
|
||||
string in 'get' is in the "C" locale. Thus, all source code is assumed
|
||||
to be written in English, so translations are always from "en_US" to
|
||||
other, explicitly named locales.
|
||||
</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a id="facet.messages.impl"/>Implementation</h4></div></div></div><div class="section" title="Models"><div class="titlepage"><div><div><h5 class="title"><a id="messages.impl.models"/>Models</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a name="facet.messages.impl"></a>Implementation</h4></div></div></div><div class="section" title="Models"><div class="titlepage"><div><div><h5 class="title"><a name="messages.impl.models"></a>Models</h5></div></div></div><p>
|
||||
This is a relatively simple class, on the face of it. The standard
|
||||
specifies very little in concrete terms, so generic
|
||||
implementations that are conforming yet do very little are the
|
||||
@ -546,7 +554,7 @@ other, explicitly named locales.
|
||||
</p><p>
|
||||
Three different mechanisms have been provided, selectable via
|
||||
configure flags:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
generic
|
||||
</p><p>
|
||||
This model does very little, and is what is used by default.
|
||||
@ -576,7 +584,7 @@ A new, standards-conformant non-virtual member function signature was
|
||||
added for 'open' so that a directory could be specified with a given
|
||||
message catalog. This simplifies calling conventions for the gnu
|
||||
model.
|
||||
</p></div><div class="section" title="The GNU Model"><div class="titlepage"><div><div><h5 class="title"><a id="messages.impl.gnu"/>The GNU Model</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="The GNU Model"><div class="titlepage"><div><div><h5 class="title"><a name="messages.impl.gnu"></a>The GNU Model</h5></div></div></div><p>
|
||||
The messages facet, because it is retrieving and converting
|
||||
between characters sets, depends on the ctype and perhaps the
|
||||
codecvt facet in a given locale. In addition, underlying "C"
|
||||
@ -588,7 +596,7 @@ model.
|
||||
Making the message catalogs can be initially tricky, but become
|
||||
quite simple with practice. For complete info, see the gettext
|
||||
documentation. Here's an idea of what is required:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Make a source file with the required string literals that need
|
||||
to be translated. See <code class="code">intl/string_literals.cc</code> for
|
||||
an example.
|
||||
@ -619,7 +627,7 @@ model.
|
||||
<code class="code">
|
||||
use_facet<messages<char> >(loc_de).open("libstdc++", locale(), dir);
|
||||
</code>
|
||||
</p></li></ul></div></div></div><div class="section" title="Use"><div class="titlepage"><div><div><h4 class="title"><a id="facet.messages.use"/>Use</h4></div></div></div><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Use"><div class="titlepage"><div><div><h4 class="title"><a name="facet.messages.use"></a>Use</h4></div></div></div><p>
|
||||
A simple example using the GNU model of message conversion.
|
||||
</p><pre class="programlisting">
|
||||
#include <iostream>
|
||||
@ -641,9 +649,9 @@ void test01()
|
||||
cout << "thank you in german:" << s02 << '\n';
|
||||
mssg_de.close(cat_de);
|
||||
}
|
||||
</pre></div><div class="section" title="Future"><div class="titlepage"><div><div><h4 class="title"><a id="facet.messages.future"/>Future</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</pre></div><div class="section" title="Future"><div class="titlepage"><div><div><h4 class="title"><a name="facet.messages.future"></a>Future</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Things that are sketchy, or remain unimplemented:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>
|
||||
_M_convert_from_char, _M_convert_to_char are in flux,
|
||||
depending on how the library ends up doing character set
|
||||
conversions. It might not be possible to do a real character
|
||||
@ -691,47 +699,47 @@ void test01()
|
||||
model. As of this writing, it is unknown how to query to see
|
||||
if a specified message catalog exists using the gettext
|
||||
package.
|
||||
</p></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a id="facet.messages.biblio"/>Bibliography</h4></div></div></div><div class="biblioentry"><a id="id513732"/><p><span class="citetitle"><em class="citetitle">
|
||||
</p></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a name="facet.messages.biblio"></a>Bibliography</h4></div></div></div><div class="biblioentry"><a name="id627050"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The GNU C Library
|
||||
</em>. </span><span class="author"><span class="firstname">Roland</span> <span class="surname">McGrath</span>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2007 FSF. </span><span class="pagenums">Chapters 6 Character Set Handling, and 7 Locales and Internationalization
|
||||
. </span></p></div><div class="biblioentry"><a id="id513771"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></p></div><div class="biblioentry"><a name="id627090"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Correspondence
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2002 . </span></p></div><div class="biblioentry"><a id="id513797"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2002 . </span></p></div><div class="biblioentry"><a name="id627115"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 14882:1998 Programming languages - C++
|
||||
</em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a id="id513816"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a name="id627134"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 9899:1999 Programming languages - C
|
||||
</em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry" title="System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)"><a id="id513835"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.opengroup.org/austin">
|
||||
</em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry" title="System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)"><a name="id627153"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.opengroup.org/austin" target="_top">
|
||||
System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)
|
||||
</a>
|
||||
</em>. </span><span class="copyright">Copyright © 2008
|
||||
</i>. </span><span class="copyright">Copyright © 2008
|
||||
The Open Group/The Institute of Electrical and Electronics
|
||||
Engineers, Inc.
|
||||
. </span></p></div><div class="biblioentry"><a id="id513862"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></p></div><div class="biblioentry"><a name="id627180"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The C++ Programming Language, Special Edition
|
||||
</em>. </span><span class="author"><span class="firstname">Bjarne</span> <span class="surname">Stroustrup</span>. </span><span class="copyright">Copyright © 2000 Addison Wesley, Inc.. </span><span class="pagenums">Appendix D. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley
|
||||
. </span></span></p></div><div class="biblioentry"><a id="id513901"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></span></p></div><div class="biblioentry"><a name="id627219"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Standard C++ IOStreams and Locales
|
||||
</em>. </span><span class="subtitle">
|
||||
Advanced Programmer's Guide and Reference
|
||||
. </span><span class="author"><span class="firstname">Angelika</span> <span class="surname">Langer</span>. </span><span class="author"><span class="firstname">Klaus</span> <span class="surname">Kreft</span>. </span><span class="copyright">Copyright © 2000 Addison Wesley Longman, Inc.. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley Longman
|
||||
. </span></span></p></div><div class="biblioentry" title="API Specifications, Java Platform"><a id="id513948"/><p><span class="title"><em>
|
||||
<a class="link" href="http://java.sun.com/reference/api/index.html">
|
||||
. </span></span></p></div><div class="biblioentry" title="API Specifications, Java Platform"><a name="id627266"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://java.sun.com/reference/api/index.html" target="_top">
|
||||
API Specifications, Java Platform
|
||||
</a>
|
||||
</em>. </span><span class="pagenums">java.util.Properties, java.text.MessageFormat,
|
||||
</i>. </span><span class="pagenums">java.util.Properties, java.text.MessageFormat,
|
||||
java.util.Locale, java.util.ResourceBundle
|
||||
. </span></p></div><div class="biblioentry" title="GNU gettext tools, version 0.10.38, Native Language Support Library and Tools."><a id="id513967"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.gnu.org/software/gettext">
|
||||
. </span></p></div><div class="biblioentry" title="GNU gettext tools, version 0.10.38, Native Language Support Library and Tools."><a name="id627286"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.gnu.org/software/gettext" target="_top">
|
||||
GNU gettext tools, version 0.10.38, Native Language Support
|
||||
Library and Tools.
|
||||
</a>
|
||||
</em>. </span></p></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="localization.html">Prev</a> </td><td align="center"><a accesskey="u" href="localization.html">Up</a></td><td align="right"> <a accesskey="n" href="containers.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 8.
|
||||
</i>. </span></p></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="localization.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="localization.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="containers.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 8.
|
||||
Localization
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 9.
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 9.
|
||||
Containers
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>File Based Streams</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="io.html" title="Chapter 13. Input and Output"/><link rel="prev" href="stringstreams.html" title="Memory Based Streams"/><link rel="next" href="io_and_c.html" title="Interacting with C"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">File Based Streams</th></tr><tr><td align="left"><a accesskey="p" href="stringstreams.html">Prev</a> </td><th width="60%" align="center">Chapter 13.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>File Based Streams</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="io.html" title="Chapter 13. Input and Output"><link rel="prev" href="stringstreams.html" title="Memory Based Streams"><link rel="next" href="io_and_c.html" title="Interacting with C"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">File Based Streams</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="stringstreams.html">Prev</a> </td><th width="60%" align="center">Chapter 13.
|
||||
Input and Output
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="io_and_c.html">Next</a></td></tr></table><hr/></div><div class="section" title="File Based Streams"><div class="titlepage"><div><div><h2 class="title"><a id="std.io.filestreams"/>File Based Streams</h2></div></div></div><div class="section" title="Copying a File"><div class="titlepage"><div><div><h3 class="title"><a id="std.io.filestreams.copying_a_file"/>Copying a File</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="io_and_c.html">Next</a></td></tr></table><hr></div><div class="section" title="File Based Streams"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.io.filestreams"></a>File Based Streams</h2></div></div></div><div class="section" title="Copying a File"><div class="titlepage"><div><div><h3 class="title"><a name="std.io.filestreams.copying_a_file"></a>Copying a File</h3></div></div></div><p>
|
||||
</p><p>So you want to copy a file quickly and easily, and most important,
|
||||
completely portably. And since this is C++, you have an open
|
||||
ifstream (call it IN) and an open ofstream (call it OUT):
|
||||
@ -49,7 +57,7 @@
|
||||
The operators shown above are all defined in the parent
|
||||
basic_ostream class and are therefore available with all possible
|
||||
descendants.
|
||||
</p></div><div class="section" title="Binary Input and Output"><div class="titlepage"><div><div><h3 class="title"><a id="std.io.filestreams.binary"/>Binary Input and Output</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Binary Input and Output"><div class="titlepage"><div><div><h3 class="title"><a name="std.io.filestreams.binary"></a>Binary Input and Output</h3></div></div></div><p>
|
||||
</p><p>The first and most important thing to remember about binary I/O is
|
||||
that opening a file with <code class="code">ios::binary</code> is not, repeat
|
||||
<span class="emphasis"><em>not</em></span>, the only thing you have to do. It is not a silver
|
||||
@ -87,7 +95,7 @@
|
||||
of <span class="emphasis"><em>formatting</em></span> functions and classes to perform something
|
||||
which <span class="emphasis"><em>requires</em></span> that formatting not be done? There are a
|
||||
seemingly infinite number of solutions, and a few are listed here:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><span class="quote">“<span class="quote">Derive your own fstream-type classes and write your own
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="quote">“<span class="quote">Derive your own fstream-type classes and write your own
|
||||
<</>> operators to do binary I/O on whatever data
|
||||
types you're using.</span>”</span>
|
||||
</p><p>
|
||||
@ -138,7 +146,7 @@
|
||||
</p><p>
|
||||
An instructive thread from comp.lang.c++.moderated delved off into
|
||||
this topic starting more or less at
|
||||
<a class="link" href="http://groups.google.com/group/comp.std.c++/browse_thread/thread/f87b4abd7954a87/946a3eb9921e382d?q=comp.std.c%2B%2B+binary+iostream#946a3eb9921e382d">this</a>
|
||||
<a class="link" href="http://groups.google.com/group/comp.std.c++/browse_thread/thread/f87b4abd7954a87/946a3eb9921e382d?q=comp.std.c%2B%2B+binary+iostream#946a3eb9921e382d" target="_top">this</a>
|
||||
post and continuing to the end of the thread. (The subject heading is "binary iostreams" on both comp.std.c++
|
||||
and comp.lang.c++.moderated.) Take special note of the replies by James Kanze and Dietmar Kühl.
|
||||
</p><p>Briefly, the problems of byte ordering and type sizes mean that
|
||||
@ -147,4 +155,4 @@
|
||||
between arbitrary programs, or across a network, or from one
|
||||
invocation of a program to another invocation of the same program
|
||||
on a different platform, etc.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="stringstreams.html">Prev</a> </td><td align="center"><a accesskey="u" href="io.html">Up</a></td><td align="right"> <a accesskey="n" href="io_and_c.html">Next</a></td></tr><tr><td align="left" valign="top">Memory Based Streams </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Interacting with C</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="stringstreams.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="io.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="io_and_c.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Memory Based Streams </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Interacting with C</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,15 +1,23 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Generalized Operations</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="numerics.html" title="Chapter 12. Numerics"/><link rel="prev" href="numerics.html" title="Chapter 12. Numerics"/><link rel="next" href="numerics_and_c.html" title="Interacting with C"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Generalized Operations</th></tr><tr><td align="left"><a accesskey="p" href="numerics.html">Prev</a> </td><th width="60%" align="center">Chapter 12.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Generalized Operations</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="numerics.html" title="Chapter 12. Numerics"><link rel="prev" href="numerics.html" title="Chapter 12. Numerics"><link rel="next" href="numerics_and_c.html" title="Interacting with C"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Generalized Operations</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="numerics.html">Prev</a> </td><th width="60%" align="center">Chapter 12.
|
||||
Numerics
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="numerics_and_c.html">Next</a></td></tr></table><hr/></div><div class="section" title="Generalized Operations"><div class="titlepage"><div><div><h2 class="title"><a id="std.numerics.generalized_ops"/>Generalized Operations</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="numerics_and_c.html">Next</a></td></tr></table><hr></div><div class="section" title="Generalized Operations"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.numerics.generalized_ops"></a>Generalized Operations</h2></div></div></div><p>
|
||||
</p><p>There are four generalized functions in the <numeric> header
|
||||
that follow the same conventions as those in <algorithm>. Each
|
||||
of them is overloaded: one signature for common default operations,
|
||||
and a second for fully general operations. Their names are
|
||||
self-explanatory to anyone who works with numerics on a regular basis:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="code">accumulate</code></p></li><li class="listitem"><p><code class="code">inner_product</code></p></li><li class="listitem"><p><code class="code">chapterial_sum</code></p></li><li class="listitem"><p><code class="code">adjacent_difference</code></p></li></ul></div><p>Here is a simple example of the two forms of <code class="code">accumulate</code>.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">accumulate</code></p></li><li class="listitem"><p><code class="code">inner_product</code></p></li><li class="listitem"><p><code class="code">chapterial_sum</code></p></li><li class="listitem"><p><code class="code">adjacent_difference</code></p></li></ul></div><p>Here is a simple example of the two forms of <code class="code">accumulate</code>.
|
||||
</p><pre class="programlisting">
|
||||
int ar[50];
|
||||
int someval = somefunction();
|
||||
@ -26,7 +34,7 @@
|
||||
and multiplies all the members of the array; here we must obviously
|
||||
use 1 as a starting value instead of 0.
|
||||
</p><p>The other three functions have similar dual-signature forms.
|
||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="numerics.html">Prev</a> </td><td align="center"><a accesskey="u" href="numerics.html">Up</a></td><td align="right"> <a accesskey="n" href="numerics_and_c.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 12.
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="numerics.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="numerics.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="numerics_and_c.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 12.
|
||||
Numerics
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Interacting with C</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Interacting with C</td></tr></table></div></body></html>
|
||||
|
||||
File diff suppressed because one or more lines are too long
@ -1,9 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Porting to New Hardware or Operating Systems</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , internals "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"/><link rel="prev" href="documentation_hacking.html" title="Writing and Generating Documentation"/><link rel="next" href="test.html" title="Test"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Porting to New Hardware or Operating Systems</th></tr><tr><td align="left"><a accesskey="p" href="documentation_hacking.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Porting to New Hardware or Operating Systems</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
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ISO C++
|
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,
|
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internals
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
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library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"><link rel="prev" href="documentation_hacking.html" title="Writing and Generating Documentation"><link rel="next" href="test.html" title="Test"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Porting to New Hardware or Operating Systems</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="documentation_hacking.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
Porting and Maintenance
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="test.html">Next</a></td></tr></table><hr/></div><div class="section" title="Porting to New Hardware or Operating Systems"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.porting.internals"/>Porting to New Hardware or Operating Systems</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="test.html">Next</a></td></tr></table><hr></div><div class="section" title="Porting to New Hardware or Operating Systems"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="appendix.porting.internals"></a>Porting to New Hardware or Operating Systems</h2></div></div></div><p>
|
||||
</p><p>This document explains how to port libstdc++ (the GNU C++ library) to
|
||||
a new target.
|
||||
</p><p>In order to make the GNU C++ library (libstdc++) work with a new
|
||||
@ -20,7 +32,7 @@ works. It is difficult to test the C++ compiler without a working
|
||||
library, but you should at least try some minimal test cases.
|
||||
</p><p>(Note that what we think of as a "target," the library refers to as
|
||||
a "host." The comment at the top of <code class="code">configure.ac</code> explains why.)
|
||||
</p><div class="section" title="Operating System"><div class="titlepage"><div><div><h3 class="title"><a id="internals.os"/>Operating System</h3></div></div></div><p>If you are porting to a new operating system (as opposed to a new chip
|
||||
</p><div class="section" title="Operating System"><div class="titlepage"><div><div><h3 class="title"><a name="internals.os"></a>Operating System</h3></div></div></div><p>If you are porting to a new operating system (as opposed to a new chip
|
||||
using an existing operating system), you will need to create a new
|
||||
directory in the <code class="code">config/os</code> hierarchy. For example, the IRIX
|
||||
configuration files are all in <code class="code">config/os/irix</code>. There is no set
|
||||
@ -99,7 +111,7 @@ this:
|
||||
#endif
|
||||
</pre><p>We recommend copying an existing <code class="code">os_defines.h</code> to use as a
|
||||
starting point.
|
||||
</p></div><div class="section" title="CPU"><div class="titlepage"><div><div><h3 class="title"><a id="internals.cpu"/>CPU</h3></div></div></div><p>If you are porting to a new chip (as opposed to a new operating system
|
||||
</p></div><div class="section" title="CPU"><div class="titlepage"><div><div><h3 class="title"><a name="internals.cpu"></a>CPU</h3></div></div></div><p>If you are porting to a new chip (as opposed to a new operating system
|
||||
running on an existing chip), you will need to create a new directory in the
|
||||
<code class="code">config/cpu</code> hierarchy. Much like the <a class="link" href="internals.html#internals.os" title="Operating System">Operating system</a> setup,
|
||||
there are no strict rules on how to organize the CPU configuration
|
||||
@ -117,7 +129,7 @@ example, <code class="code">alpha</code>, <code class="code">alphaev5</code>, an
|
||||
</p><p>The <code class="code">cpu_include_dir</code> sets default locations for the files controlling
|
||||
<a class="link" href="internals.html#internals.thread_safety" title="Thread Safety">Thread safety</a> and <a class="link" href="internals.html#internals.numeric_limits" title="Numeric Limits">Numeric limits</a>, if the defaults are not
|
||||
appropriate for your chip.
|
||||
</p></div><div class="section" title="Character Types"><div class="titlepage"><div><div><h3 class="title"><a id="internals.char_types"/>Character Types</h3></div></div></div><p>The library requires that you provide three header files to implement
|
||||
</p></div><div class="section" title="Character Types"><div class="titlepage"><div><div><h3 class="title"><a name="internals.char_types"></a>Character Types</h3></div></div></div><p>The library requires that you provide three header files to implement
|
||||
character classification, analogous to that provided by the C libraries
|
||||
<code class="code"><ctype.h></code> header. You can model these on the files provided in
|
||||
<code class="code">config/os/generic</code>. However, these files will almost
|
||||
@ -276,7 +288,7 @@ from <code class="code">__low</code> up until <code class="code">__high</code> i
|
||||
++__low;
|
||||
return __low;
|
||||
}
|
||||
</pre></div><div class="section" title="Thread Safety"><div class="titlepage"><div><div><h3 class="title"><a id="internals.thread_safety"/>Thread Safety</h3></div></div></div><p>The C++ library string functionality requires a couple of atomic
|
||||
</pre></div><div class="section" title="Thread Safety"><div class="titlepage"><div><div><h3 class="title"><a name="internals.thread_safety"></a>Thread Safety</h3></div></div></div><p>The C++ library string functionality requires a couple of atomic
|
||||
operations to provide thread-safety. If you don't take any special
|
||||
action, the library will use stub versions of these functions that are
|
||||
not thread-safe. They will work fine, unless your applications are
|
||||
@ -331,7 +343,7 @@ must be equivalent to those provided here, but using atomic operations:
|
||||
{
|
||||
*__mem += __val;
|
||||
}
|
||||
</pre></div><div class="section" title="Numeric Limits"><div class="titlepage"><div><div><h3 class="title"><a id="internals.numeric_limits"/>Numeric Limits</h3></div></div></div><p>The C++ library requires information about the fundamental data types,
|
||||
</pre></div><div class="section" title="Numeric Limits"><div class="titlepage"><div><div><h3 class="title"><a name="internals.numeric_limits"></a>Numeric Limits</h3></div></div></div><p>The C++ library requires information about the fundamental data types,
|
||||
such as the minimum and maximum representable values of each type.
|
||||
You can define each of these values individually, but it is usually
|
||||
easiest just to indicate how many bits are used in each of the data
|
||||
@ -343,7 +355,7 @@ same values, you can provide a CPU-specific file instead so that you
|
||||
do not have to provide the same definitions for each operating system.
|
||||
To take that approach, create a new file called <code class="code">cpu_limits.h</code> in
|
||||
your CPU configuration directory (see <a class="link" href="internals.html#internals.cpu" title="CPU">CPU</a>).
|
||||
</p></div><div class="section" title="Libtool"><div class="titlepage"><div><div><h3 class="title"><a id="internals.libtool"/>Libtool</h3></div></div></div><p>The C++ library is compiled, archived and linked with libtool.
|
||||
</p></div><div class="section" title="Libtool"><div class="titlepage"><div><div><h3 class="title"><a name="internals.libtool"></a>Libtool</h3></div></div></div><p>The C++ library is compiled, archived and linked with libtool.
|
||||
Explaining the full workings of libtool is beyond the scope of this
|
||||
document, but there are a few, particular bits that are necessary for
|
||||
porting.
|
||||
@ -365,4 +377,4 @@ do this is to build the library using <code class="code">gcc -shared</code>.
|
||||
<code class="code">ltcf-c.sh</code> in the top-level directory. Find the switch statement
|
||||
that sets <code class="code">archive_cmds</code>. Here, adjust the setting for your
|
||||
operating system.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="documentation_hacking.html">Prev</a> </td><td align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td align="right"> <a accesskey="n" href="test.html">Next</a></td></tr><tr><td align="left" valign="top">Writing and Generating Documentation </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Test</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="documentation_hacking.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="test.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Writing and Generating Documentation </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Test</td></tr></table></div></body></html>
|
||||
|
||||
File diff suppressed because one or more lines are too long
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 13. Input and Output</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="numerics_and_c.html" title="Interacting with C"/><link rel="next" href="streambufs.html" title="Stream Buffers"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 13.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 13. Input and Output</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="numerics_and_c.html" title="Interacting with C"><link rel="next" href="streambufs.html" title="Stream Buffers"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 13.
|
||||
Input and Output
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="numerics_and_c.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="numerics_and_c.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="streambufs.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 13. Input and Output"><div class="titlepage"><div><div><h2 class="title"><a id="std.io"/>Chapter 13.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="streambufs.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 13. Input and Output"><div class="titlepage"><div><div><h2 class="title"><a name="std.io"></a>Chapter 13.
|
||||
Input and Output
|
||||
<a id="id515759" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="io.html#std.io.objects">Iostream Objects</a></span></dt><dt><span class="section"><a href="streambufs.html">Stream Buffers</a></span></dt><dd><dl><dt><span class="section"><a href="streambufs.html#io.streambuf.derived">Derived streambuf Classes</a></span></dt><dt><span class="section"><a href="streambufs.html#io.streambuf.buffering">Buffering</a></span></dt></dl></dd><dt><span class="section"><a href="stringstreams.html">Memory Based Streams</a></span></dt><dd><dl><dt><span class="section"><a href="stringstreams.html#std.io.memstreams.compat">Compatibility With strstream</a></span></dt></dl></dd><dt><span class="section"><a href="fstreams.html">File Based Streams</a></span></dt><dd><dl><dt><span class="section"><a href="fstreams.html#std.io.filestreams.copying_a_file">Copying a File</a></span></dt><dt><span class="section"><a href="fstreams.html#std.io.filestreams.binary">Binary Input and Output</a></span></dt></dl></dd><dt><span class="section"><a href="io_and_c.html">Interacting with C</a></span></dt><dd><dl><dt><span class="section"><a href="io_and_c.html#std.io.c.FILE">Using FILE* and file descriptors</a></span></dt><dt><span class="section"><a href="io_and_c.html#std.io.c.sync">Performance</a></span></dt></dl></dd></dl></div><div class="section" title="Iostream Objects"><div class="titlepage"><div><div><h2 class="title"><a id="std.io.objects"/>Iostream Objects</h2></div></div></div><p>To minimize the time you have to wait on the compiler, it's good to
|
||||
<a class="indexterm" name="id629077"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="io.html#std.io.objects">Iostream Objects</a></span></dt><dt><span class="section"><a href="streambufs.html">Stream Buffers</a></span></dt><dd><dl><dt><span class="section"><a href="streambufs.html#io.streambuf.derived">Derived streambuf Classes</a></span></dt><dt><span class="section"><a href="streambufs.html#io.streambuf.buffering">Buffering</a></span></dt></dl></dd><dt><span class="section"><a href="stringstreams.html">Memory Based Streams</a></span></dt><dd><dl><dt><span class="section"><a href="stringstreams.html#std.io.memstreams.compat">Compatibility With strstream</a></span></dt></dl></dd><dt><span class="section"><a href="fstreams.html">File Based Streams</a></span></dt><dd><dl><dt><span class="section"><a href="fstreams.html#std.io.filestreams.copying_a_file">Copying a File</a></span></dt><dt><span class="section"><a href="fstreams.html#std.io.filestreams.binary">Binary Input and Output</a></span></dt></dl></dd><dt><span class="section"><a href="io_and_c.html">Interacting with C</a></span></dt><dd><dl><dt><span class="section"><a href="io_and_c.html#std.io.c.FILE">Using FILE* and file descriptors</a></span></dt><dt><span class="section"><a href="io_and_c.html#std.io.c.sync">Performance</a></span></dt></dl></dd></dl></div><div class="section" title="Iostream Objects"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.io.objects"></a>Iostream Objects</h2></div></div></div><p>To minimize the time you have to wait on the compiler, it's good to
|
||||
only include the headers you really need. Many people simply include
|
||||
<iostream> when they don't need to -- and that can <span class="emphasis"><em>penalize
|
||||
your runtime as well.</em></span> Here are some tips on which header to use
|
||||
@ -118,4 +126,4 @@
|
||||
the standard objects in that source file; you'll pay less startup
|
||||
time. Only include the header files you need to in general; your
|
||||
compile times will go down when there's less parsing work to do.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="numerics_and_c.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="streambufs.html">Next</a></td></tr><tr><td align="left" valign="top">Interacting with C </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Stream Buffers</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="numerics_and_c.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="streambufs.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Interacting with C </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Stream Buffers</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Interacting with C</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="io.html" title="Chapter 13. Input and Output"/><link rel="prev" href="fstreams.html" title="File Based Streams"/><link rel="next" href="atomics.html" title="Chapter 14. Atomics"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Interacting with C</th></tr><tr><td align="left"><a accesskey="p" href="fstreams.html">Prev</a> </td><th width="60%" align="center">Chapter 13.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Interacting with C</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="io.html" title="Chapter 13. Input and Output"><link rel="prev" href="fstreams.html" title="File Based Streams"><link rel="next" href="atomics.html" title="Chapter 14. Atomics"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Interacting with C</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="fstreams.html">Prev</a> </td><th width="60%" align="center">Chapter 13.
|
||||
Input and Output
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="atomics.html">Next</a></td></tr></table><hr/></div><div class="section" title="Interacting with C"><div class="titlepage"><div><div><h2 class="title"><a id="std.io.c"/>Interacting with C</h2></div></div></div><div class="section" title="Using FILE* and file descriptors"><div class="titlepage"><div><div><h3 class="title"><a id="std.io.c.FILE"/>Using FILE* and file descriptors</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="atomics.html">Next</a></td></tr></table><hr></div><div class="section" title="Interacting with C"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.io.c"></a>Interacting with C</h2></div></div></div><div class="section" title="Using FILE* and file descriptors"><div class="titlepage"><div><div><h3 class="title"><a name="std.io.c.FILE"></a>Using FILE* and file descriptors</h3></div></div></div><p>
|
||||
See the <a class="link" href="ext_io.html" title="Chapter 28. Input and Output">extensions</a> for using
|
||||
<span class="type">FILE</span> and <span class="type">file descriptors</span> with
|
||||
<code class="classname">ofstream</code> and
|
||||
<code class="classname">ifstream</code>.
|
||||
</p></div><div class="section" title="Performance"><div class="titlepage"><div><div><h3 class="title"><a id="std.io.c.sync"/>Performance</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Performance"><div class="titlepage"><div><div><h3 class="title"><a name="std.io.c.sync"></a>Performance</h3></div></div></div><p>
|
||||
Pathetic Performance? Ditch C.
|
||||
</p><p>It sounds like a flame on C, but it isn't. Really. Calm down.
|
||||
I'm just saying it to get your attention.
|
||||
@ -51,7 +59,7 @@
|
||||
<code class="code">clog</code>, and their wide-character counterchapters). File stream
|
||||
objects that you declare yourself have no such requirement and are fully
|
||||
buffered.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="fstreams.html">Prev</a> </td><td align="center"><a accesskey="u" href="io.html">Up</a></td><td align="right"> <a accesskey="n" href="atomics.html">Next</a></td></tr><tr><td align="left" valign="top">File Based Streams </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 14.
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="fstreams.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="io.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="atomics.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">File Based Streams </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 14.
|
||||
Atomics
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 10. Iterators</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="containers_and_c.html" title="Interacting with C"/><link rel="next" href="algorithms.html" title="Chapter 11. Algorithms"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 10.
|
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 10. Iterators</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
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,
|
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|
||||
"><meta name="keywords" content="
|
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ISO C++
|
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,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="containers_and_c.html" title="Interacting with C"><link rel="next" href="algorithms.html" title="Chapter 11. Algorithms"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 10.
|
||||
Iterators
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="containers_and_c.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="containers_and_c.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="algorithms.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 10. Iterators"><div class="titlepage"><div><div><h2 class="title"><a id="std.iterators"/>Chapter 10.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="algorithms.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 10. Iterators"><div class="titlepage"><div><div><h2 class="title"><a name="std.iterators"></a>Chapter 10.
|
||||
Iterators
|
||||
<a id="id514908" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="iterators.html#std.iterators.predefined">Predefined</a></span></dt><dd><dl><dt><span class="section"><a href="iterators.html#iterators.predefined.vs_pointers">Iterators vs. Pointers</a></span></dt><dt><span class="section"><a href="iterators.html#iterators.predefined.end">One Past the End</a></span></dt></dl></dd></dl></div><div class="section" title="Predefined"><div class="titlepage"><div><div><h2 class="title"><a id="std.iterators.predefined"/>Predefined</h2></div></div></div><div class="section" title="Iterators vs. Pointers"><div class="titlepage"><div><div><h3 class="title"><a id="iterators.predefined.vs_pointers"/>Iterators vs. Pointers</h3></div></div></div><p>
|
||||
<a class="indexterm" name="id628227"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="iterators.html#std.iterators.predefined">Predefined</a></span></dt><dd><dl><dt><span class="section"><a href="iterators.html#iterators.predefined.vs_pointers">Iterators vs. Pointers</a></span></dt><dt><span class="section"><a href="iterators.html#iterators.predefined.end">One Past the End</a></span></dt></dl></dd></dl></div><div class="section" title="Predefined"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.iterators.predefined"></a>Predefined</h2></div></div></div><div class="section" title="Iterators vs. Pointers"><div class="titlepage"><div><div><h3 class="title"><a name="iterators.predefined.vs_pointers"></a>Iterators vs. Pointers</h3></div></div></div><p>
|
||||
The following
|
||||
FAQ <a class="link" href="../faq.html#faq.iterator_as_pod" title="7.1.">entry</a> points out that
|
||||
iterators are not implemented as pointers. They are a generalization
|
||||
@ -44,7 +52,7 @@ classes.
|
||||
down through inheritance, so while the compiler has to do work
|
||||
looking up all the names, your runtime code does not. (This has
|
||||
been a prime concern from the beginning.)
|
||||
</p></div><div class="section" title="One Past the End"><div class="titlepage"><div><div><h3 class="title"><a id="iterators.predefined.end"/>One Past the End</h3></div></div></div><p>This starts off sounding complicated, but is actually very easy,
|
||||
</p></div><div class="section" title="One Past the End"><div class="titlepage"><div><div><h3 class="title"><a name="iterators.predefined.end"></a>One Past the End</h3></div></div></div><p>This starts off sounding complicated, but is actually very easy,
|
||||
especially towards the end. Trust me.
|
||||
</p><p>Beginners usually have a little trouble understand the whole
|
||||
'past-the-end' thing, until they remember their early algebra classes
|
||||
@ -53,7 +61,7 @@ classes.
|
||||
</p><p>First, some history, and a reminder of some of the funkier rules in
|
||||
C and C++ for builtin arrays. The following rules have always been
|
||||
true for both languages:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>You can point anywhere in the array, <span class="emphasis"><em>or to the first element
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>You can point anywhere in the array, <span class="emphasis"><em>or to the first element
|
||||
past the end of the array</em></span>. A pointer that points to one
|
||||
past the end of the array is guaranteed to be as unique as a
|
||||
pointer to somewhere inside the array, so that you can compare
|
||||
@ -124,7 +132,7 @@ classes.
|
||||
sequences very simple to recognize: if the two endpoints compare
|
||||
equal, then the {array, sequence, container, whatever} is empty.
|
||||
</p><p>Just don't dereference <code class="code">end()</code>.
|
||||
</p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="containers_and_c.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="algorithms.html">Next</a></td></tr><tr><td align="left" valign="top">Interacting with C </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 11.
|
||||
</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="containers_and_c.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="algorithms.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Interacting with C </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 11.
|
||||
Algorithms
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,93 +1,101 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>License</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="status.html" title="Chapter 1. Status"/><link rel="prev" href="status.html" title="Chapter 1. Status"/><link rel="next" href="bugs.html" title="Bugs"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">License</th></tr><tr><td align="left"><a accesskey="p" href="status.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td align="right"> <a accesskey="n" href="bugs.html">Next</a></td></tr></table><hr/></div><div class="section" title="License"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.status.license"/>License</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>License</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
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,
|
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library
|
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"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="status.html" title="Chapter 1. Status"><link rel="prev" href="status.html" title="Chapter 1. Status"><link rel="next" href="bugs.html" title="Bugs"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">License</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="status.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td width="20%" align="right"> <a accesskey="n" href="bugs.html">Next</a></td></tr></table><hr></div><div class="section" title="License"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.intro.status.license"></a>License</h2></div></div></div><p>
|
||||
There are two licenses affecting GNU libstdc++: one for the code,
|
||||
and one for the documentation.
|
||||
</p><p>
|
||||
There is a license section in the FAQ regarding common <a class="link" href="../faq.html#faq.license">questions</a>. If you have more
|
||||
questions, ask the FSF or the <a class="link" href="http://gcc.gnu.org/lists.html">gcc mailing list</a>.
|
||||
</p><div class="section" title="The Code: GPL"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.license.gpl"/>The Code: GPL</h3></div></div></div><p>
|
||||
questions, ask the FSF or the <a class="link" href="http://gcc.gnu.org/lists.html" target="_top">gcc mailing list</a>.
|
||||
</p><div class="section" title="The Code: GPL"><div class="titlepage"><div><div><h3 class="title"><a name="manual.intro.status.license.gpl"></a>The Code: GPL</h3></div></div></div><p>
|
||||
The source code is distributed under the <a class="link" href="appendix_gpl.html" title="Appendix D. GNU General Public License version 3">GNU General Public License version 3</a>,
|
||||
with the addition under section 7 of an exception described in
|
||||
the <span class="quote">“<span class="quote">GCC Runtime Library Exception, version 3.1</span>”</span>
|
||||
as follows (or see the file COPYING.RUNTIME):
|
||||
</p><div class="literallayout"><p><br/>
|
||||
GCC RUNTIME LIBRARY EXCEPTION<br/>
|
||||
<br/>
|
||||
Version 3.1, 31 March 2009<br/>
|
||||
<br/>
|
||||
Copyright (C) 2009 <a class="link" href="http://www.fsf.org">Free Software Foundation, Inc.</a><br/>
|
||||
<br/>
|
||||
Everyone is permitted to copy and distribute verbatim copies of this<br/>
|
||||
license document, but changing it is not allowed.<br/>
|
||||
<br/>
|
||||
This GCC Runtime Library Exception ("Exception") is an additional<br/>
|
||||
permission under section 7 of the GNU General Public License, version<br/>
|
||||
3 ("GPLv3"). It applies to a given file (the "Runtime Library") that<br/>
|
||||
bears a notice placed by the copyright holder of the file stating that<br/>
|
||||
the file is governed by GPLv3 along with this Exception.<br/>
|
||||
<br/>
|
||||
When you use GCC to compile a program, GCC may combine portions of<br/>
|
||||
certain GCC header files and runtime libraries with the compiled<br/>
|
||||
program. The purpose of this Exception is to allow compilation of<br/>
|
||||
non-GPL (including proprietary) programs to use, in this way, the<br/>
|
||||
header files and runtime libraries covered by this Exception.<br/>
|
||||
<br/>
|
||||
0. Definitions.<br/>
|
||||
<br/>
|
||||
A file is an "Independent Module" if it either requires the Runtime<br/>
|
||||
Library for execution after a Compilation Process, or makes use of an<br/>
|
||||
interface provided by the Runtime Library, but is not otherwise based<br/>
|
||||
on the Runtime Library.<br/>
|
||||
<br/>
|
||||
"GCC" means a version of the GNU Compiler Collection, with or without<br/>
|
||||
modifications, governed by version 3 (or a specified later version) of<br/>
|
||||
the GNU General Public License (GPL) with the option of using any<br/>
|
||||
subsequent versions published by the FSF.<br/>
|
||||
<br/>
|
||||
"GPL-compatible Software" is software whose conditions of propagation,<br/>
|
||||
modification and use would permit combination with GCC in accord with<br/>
|
||||
the license of GCC.<br/>
|
||||
<br/>
|
||||
"Target Code" refers to output from any compiler for a real or virtual<br/>
|
||||
target processor architecture, in executable form or suitable for<br/>
|
||||
input to an assembler, loader, linker and/or execution<br/>
|
||||
phase. Notwithstanding that, Target Code does not include data in any<br/>
|
||||
format that is used as a compiler intermediate representation, or used<br/>
|
||||
for producing a compiler intermediate representation.<br/>
|
||||
<br/>
|
||||
The "Compilation Process" transforms code entirely represented in<br/>
|
||||
non-intermediate languages designed for human-written code, and/or in<br/>
|
||||
Java Virtual Machine byte code, into Target Code. Thus, for example,<br/>
|
||||
use of source code generators and preprocessors need not be considered<br/>
|
||||
part of the Compilation Process, since the Compilation Process can be<br/>
|
||||
understood as starting with the output of the generators or<br/>
|
||||
preprocessors.<br/>
|
||||
<br/>
|
||||
A Compilation Process is "Eligible" if it is done using GCC, alone or<br/>
|
||||
with other GPL-compatible software, or if it is done without using any<br/>
|
||||
work based on GCC. For example, using non-GPL-compatible Software to<br/>
|
||||
optimize any GCC intermediate representations would not qualify as an<br/>
|
||||
Eligible Compilation Process.<br/>
|
||||
<br/>
|
||||
1. Grant of Additional Permission.<br/>
|
||||
<br/>
|
||||
You have permission to propagate a work of Target Code formed by<br/>
|
||||
combining the Runtime Library with Independent Modules, even if such<br/>
|
||||
propagation would otherwise violate the terms of GPLv3, provided that<br/>
|
||||
all Target Code was generated by Eligible Compilation Processes. You<br/>
|
||||
may then convey such a combination under terms of your choice,<br/>
|
||||
consistent with the licensing of the Independent Modules.<br/>
|
||||
<br/>
|
||||
2. No Weakening of GCC Copyleft.<br/>
|
||||
<br/>
|
||||
The availability of this Exception does not imply any general<br/>
|
||||
presumption that third-party software is unaffected by the copyleft<br/>
|
||||
requirements of the license of GCC.<br/>
|
||||
</p><div class="literallayout"><p><br>
|
||||
GCC RUNTIME LIBRARY EXCEPTION<br>
|
||||
<br>
|
||||
Version 3.1, 31 March 2009<br>
|
||||
<br>
|
||||
Copyright (C) 2009 <a class="link" href="http://www.fsf.org" target="_top">Free Software Foundation, Inc.</a><br>
|
||||
<br>
|
||||
Everyone is permitted to copy and distribute verbatim copies of this<br>
|
||||
license document, but changing it is not allowed.<br>
|
||||
<br>
|
||||
This GCC Runtime Library Exception ("Exception") is an additional<br>
|
||||
permission under section 7 of the GNU General Public License, version<br>
|
||||
3 ("GPLv3"). It applies to a given file (the "Runtime Library") that<br>
|
||||
bears a notice placed by the copyright holder of the file stating that<br>
|
||||
the file is governed by GPLv3 along with this Exception.<br>
|
||||
<br>
|
||||
When you use GCC to compile a program, GCC may combine portions of<br>
|
||||
certain GCC header files and runtime libraries with the compiled<br>
|
||||
program. The purpose of this Exception is to allow compilation of<br>
|
||||
non-GPL (including proprietary) programs to use, in this way, the<br>
|
||||
header files and runtime libraries covered by this Exception.<br>
|
||||
<br>
|
||||
0. Definitions.<br>
|
||||
<br>
|
||||
A file is an "Independent Module" if it either requires the Runtime<br>
|
||||
Library for execution after a Compilation Process, or makes use of an<br>
|
||||
interface provided by the Runtime Library, but is not otherwise based<br>
|
||||
on the Runtime Library.<br>
|
||||
<br>
|
||||
"GCC" means a version of the GNU Compiler Collection, with or without<br>
|
||||
modifications, governed by version 3 (or a specified later version) of<br>
|
||||
the GNU General Public License (GPL) with the option of using any<br>
|
||||
subsequent versions published by the FSF.<br>
|
||||
<br>
|
||||
"GPL-compatible Software" is software whose conditions of propagation,<br>
|
||||
modification and use would permit combination with GCC in accord with<br>
|
||||
the license of GCC.<br>
|
||||
<br>
|
||||
"Target Code" refers to output from any compiler for a real or virtual<br>
|
||||
target processor architecture, in executable form or suitable for<br>
|
||||
input to an assembler, loader, linker and/or execution<br>
|
||||
phase. Notwithstanding that, Target Code does not include data in any<br>
|
||||
format that is used as a compiler intermediate representation, or used<br>
|
||||
for producing a compiler intermediate representation.<br>
|
||||
<br>
|
||||
The "Compilation Process" transforms code entirely represented in<br>
|
||||
non-intermediate languages designed for human-written code, and/or in<br>
|
||||
Java Virtual Machine byte code, into Target Code. Thus, for example,<br>
|
||||
use of source code generators and preprocessors need not be considered<br>
|
||||
part of the Compilation Process, since the Compilation Process can be<br>
|
||||
understood as starting with the output of the generators or<br>
|
||||
preprocessors.<br>
|
||||
<br>
|
||||
A Compilation Process is "Eligible" if it is done using GCC, alone or<br>
|
||||
with other GPL-compatible software, or if it is done without using any<br>
|
||||
work based on GCC. For example, using non-GPL-compatible Software to<br>
|
||||
optimize any GCC intermediate representations would not qualify as an<br>
|
||||
Eligible Compilation Process.<br>
|
||||
<br>
|
||||
1. Grant of Additional Permission.<br>
|
||||
<br>
|
||||
You have permission to propagate a work of Target Code formed by<br>
|
||||
combining the Runtime Library with Independent Modules, even if such<br>
|
||||
propagation would otherwise violate the terms of GPLv3, provided that<br>
|
||||
all Target Code was generated by Eligible Compilation Processes. You<br>
|
||||
may then convey such a combination under terms of your choice,<br>
|
||||
consistent with the licensing of the Independent Modules.<br>
|
||||
<br>
|
||||
2. No Weakening of GCC Copyleft.<br>
|
||||
<br>
|
||||
The availability of this Exception does not imply any general<br>
|
||||
presumption that third-party software is unaffected by the copyleft<br>
|
||||
requirements of the license of GCC.<br>
|
||||
</p></div><p>
|
||||
Hopefully that text is self-explanatory. If it isn't, you need to speak
|
||||
to your lawyer, or the Free Software Foundation.
|
||||
</p></div><div class="section" title="The Documentation: GPL, FDL"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.license.fdl"/>The Documentation: GPL, FDL</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="The Documentation: GPL, FDL"><div class="titlepage"><div><div><h3 class="title"><a name="manual.intro.status.license.fdl"></a>The Documentation: GPL, FDL</h3></div></div></div><p>
|
||||
The documentation shipped with the library and made available over
|
||||
the web, excluding the pages generated from source comments, are
|
||||
copyrighted by the Free Software Foundation, and placed under the
|
||||
@ -102,4 +110,4 @@ requirements of the license of GCC.<br/>
|
||||
</p><p>
|
||||
If you plan on making copies of the documentation, please let us know.
|
||||
We can probably offer suggestions.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="status.html">Prev</a> </td><td align="center"><a accesskey="u" href="status.html">Up</a></td><td align="right"> <a accesskey="n" href="bugs.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 1. Status </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Bugs</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="status.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="status.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bugs.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 1. Status </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Bugs</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,18 +1,26 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 8. Localization</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="strings.html" title="Chapter 7. Strings"/><link rel="next" href="facets.html" title="Facets"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 8.
|
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 8. Localization</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
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ISO C++
|
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,
|
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library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="strings.html" title="Chapter 7. Strings"><link rel="next" href="facets.html" title="Facets"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 8.
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Localization
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="strings.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="strings.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="facets.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 8. Localization"><div class="titlepage"><div><div><h2 class="title"><a id="std.localization"/>Chapter 8.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="facets.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 8. Localization"><div class="titlepage"><div><div><h2 class="title"><a name="std.localization"></a>Chapter 8.
|
||||
Localization
|
||||
<a id="id511193" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="localization.html#std.localization.locales">Locales</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#std.localization.locales.locale">locale</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#locales.locale.req">Requirements</a></span></dt><dt><span class="section"><a href="localization.html#locales.locale.design">Design</a></span></dt><dt><span class="section"><a href="localization.html#locales.locale.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#locale.impl.c">Interacting with "C" locales</a></span></dt></dl></dd><dt><span class="section"><a href="localization.html#locales.locale.future">Future</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="facets.html">Facets</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#std.localization.facet.ctype">ctype</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.ctype.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#id511845">Specializations</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.ctype.future">Future</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#std.localization.facet.codecvt">codecvt</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.codecvt.req">Requirements</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.design">Design</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#codecvt.design.wchar_t_size"><span class="type">wchar_t</span> Size</a></span></dt><dt><span class="section"><a href="facets.html#codecvt.design.unicode">Support for Unicode</a></span></dt><dt><span class="section"><a href="facets.html#codecvt.design.issues">Other Issues</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.codecvt.impl">Implementation</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.use">Use</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.future">Future</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#manual.localization.facet.messages">messages</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.messages.req">Requirements</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.design">Design</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#messages.impl.models">Models</a></span></dt><dt><span class="section"><a href="facets.html#messages.impl.gnu">The GNU Model</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.messages.use">Use</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.future">Future</a></span></dt></dl></dd></dl></dd></dl></div><div class="section" title="Locales"><div class="titlepage"><div><div><h2 class="title"><a id="std.localization.locales"/>Locales</h2></div></div></div><div class="section" title="locale"><div class="titlepage"><div><div><h3 class="title"><a id="std.localization.locales.locale"/>locale</h3></div></div></div><p>
|
||||
<a class="indexterm" name="id624511"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="localization.html#std.localization.locales">Locales</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#std.localization.locales.locale">locale</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#locales.locale.req">Requirements</a></span></dt><dt><span class="section"><a href="localization.html#locales.locale.design">Design</a></span></dt><dt><span class="section"><a href="localization.html#locales.locale.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="localization.html#locale.impl.c">Interacting with "C" locales</a></span></dt></dl></dd><dt><span class="section"><a href="localization.html#locales.locale.future">Future</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="facets.html">Facets</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#std.localization.facet.ctype">ctype</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.ctype.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#id625164">Specializations</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.ctype.future">Future</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#std.localization.facet.codecvt">codecvt</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.codecvt.req">Requirements</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.design">Design</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#codecvt.design.wchar_t_size"><span class="type">wchar_t</span> Size</a></span></dt><dt><span class="section"><a href="facets.html#codecvt.design.unicode">Support for Unicode</a></span></dt><dt><span class="section"><a href="facets.html#codecvt.design.issues">Other Issues</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.codecvt.impl">Implementation</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.use">Use</a></span></dt><dt><span class="section"><a href="facets.html#facet.codecvt.future">Future</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#manual.localization.facet.messages">messages</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#facet.messages.req">Requirements</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.design">Design</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.impl">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="facets.html#messages.impl.models">Models</a></span></dt><dt><span class="section"><a href="facets.html#messages.impl.gnu">The GNU Model</a></span></dt></dl></dd><dt><span class="section"><a href="facets.html#facet.messages.use">Use</a></span></dt><dt><span class="section"><a href="facets.html#facet.messages.future">Future</a></span></dt></dl></dd></dl></dd></dl></div><div class="section" title="Locales"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.localization.locales"></a>Locales</h2></div></div></div><div class="section" title="locale"><div class="titlepage"><div><div><h3 class="title"><a name="std.localization.locales.locale"></a>locale</h3></div></div></div><p>
|
||||
Describes the basic locale object, including nested
|
||||
classes id, facet, and the reference-counted implementation object,
|
||||
class _Impl.
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a id="locales.locale.req"/>Requirements</h4></div></div></div><p>
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a name="locales.locale.req"></a>Requirements</h4></div></div></div><p>
|
||||
Class locale is non-templatized and has two distinct types nested
|
||||
inside of it:
|
||||
</p><div class="blockquote"><blockquote class="blockquote"><p>
|
||||
@ -26,7 +34,7 @@ called numpunct is the data object that can be used to query for the
|
||||
thousands separator in the locale.
|
||||
</p><p>
|
||||
Literally, a facet is strictly defined:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Containing the following public data member:
|
||||
</p><p>
|
||||
<code class="code">static locale::id id;</code>
|
||||
@ -48,14 +56,14 @@ class id
|
||||
</em></span>
|
||||
</p></blockquote></div><p>
|
||||
Provides an index for looking up specific facets.
|
||||
</p></div><div class="section" title="Design"><div class="titlepage"><div><div><h4 class="title"><a id="locales.locale.design"/>Design</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Design"><div class="titlepage"><div><div><h4 class="title"><a name="locales.locale.design"></a>Design</h4></div></div></div><p>
|
||||
The major design challenge is fitting an object-orientated and
|
||||
non-global locale design on top of POSIX and other relevant standards,
|
||||
which include the Single Unix (nee X/Open.)
|
||||
</p><p>
|
||||
Because C and earlier versions of POSIX fall down so completely,
|
||||
portability is an issue.
|
||||
</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a id="locales.locale.impl"/>Implementation</h4></div></div></div><div class="section" title="Interacting with "C" locales"><div class="titlepage"><div><div><h5 class="title"><a id="locale.impl.c"/>Interacting with "C" locales</h5></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a name="locales.locale.impl"></a>Implementation</h4></div></div></div><div class="section" title='Interacting with "C" locales'><div class="titlepage"><div><div><h5 class="title"><a name="locale.impl.c"></a>Interacting with "C" locales</h5></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<code class="code">`locale -a`</code> displays available locales.
|
||||
</p><div class="blockquote"><blockquote class="blockquote"><pre class="programlisting">
|
||||
af_ZA
|
||||
@ -385,7 +393,7 @@ global locale" (emphasis Paolo), that is:
|
||||
particular on the working of locale(""), which constructs the locale
|
||||
object from the environment of the running program, that is, in
|
||||
practice, the set of LC_ALL, LANG, etc. variable of the shell.
|
||||
</p></div></div><div class="section" title="Future"><div class="titlepage"><div><div><h4 class="title"><a id="locales.locale.future"/>Future</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></div></div><div class="section" title="Future"><div class="titlepage"><div><div><h4 class="title"><a name="locales.locale.future"></a>Future</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Locale initialization: at what point does _S_classic, _S_global
|
||||
get initialized? Can named locales assume this initialization
|
||||
has already taken place?
|
||||
@ -403,35 +411,35 @@ global locale" (emphasis Paolo), that is:
|
||||
What should non-required facet instantiations do? If the
|
||||
generic implementation is provided, then how to end-users
|
||||
provide specializations?
|
||||
</p></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a id="locales.locale.biblio"/>Bibliography</h4></div></div></div><div class="biblioentry"><a id="id511556"/><p><span class="citetitle"><em class="citetitle">
|
||||
</p></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a name="locales.locale.biblio"></a>Bibliography</h4></div></div></div><div class="biblioentry"><a name="id624874"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The GNU C Library
|
||||
</em>. </span><span class="author"><span class="firstname">Roland</span> <span class="surname">McGrath</span>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2007 FSF. </span><span class="pagenums">
|
||||
Chapters 6 Character Set Handling and 7 Locales and
|
||||
Internationalization
|
||||
. </span></p></div><div class="biblioentry"><a id="id511595"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></p></div><div class="biblioentry"><a name="id624914"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Correspondence
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2002 . </span></p></div><div class="biblioentry"><a id="id511621"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="author"><span class="firstname">Ulrich</span> <span class="surname">Drepper</span>. </span><span class="copyright">Copyright © 2002 . </span></p></div><div class="biblioentry"><a name="id624939"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 14882:1998 Programming languages - C++
|
||||
</em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a id="id511640"/><p><span class="citetitle"><em class="citetitle">
|
||||
</em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a name="id624958"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 9899:1999 Programming languages - C
|
||||
</em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry" title="System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)"><a id="id511659"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.opengroup.org/austin/">
|
||||
</em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry" title="System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)"><a name="id624977"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.opengroup.org/austin/" target="_top">
|
||||
System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)
|
||||
</a>
|
||||
</em>. </span><span class="copyright">Copyright © 2008
|
||||
</i>. </span><span class="copyright">Copyright © 2008
|
||||
The Open Group/The Institute of Electrical and Electronics
|
||||
Engineers, Inc.
|
||||
. </span></p></div><div class="biblioentry"><a id="id511686"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></p></div><div class="biblioentry"><a name="id625004"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The C++ Programming Language, Special Edition
|
||||
</em>. </span><span class="author"><span class="firstname">Bjarne</span> <span class="surname">Stroustrup</span>. </span><span class="copyright">Copyright © 2000 Addison Wesley, Inc.. </span><span class="pagenums">Appendix D. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley
|
||||
. </span></span></p></div><div class="biblioentry"><a id="id511725"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></span></p></div><div class="biblioentry"><a name="id625043"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Standard C++ IOStreams and Locales
|
||||
</em>. </span><span class="subtitle">
|
||||
Advanced Programmer's Guide and Reference
|
||||
. </span><span class="author"><span class="firstname">Angelika</span> <span class="surname">Langer</span>. </span><span class="author"><span class="firstname">Klaus</span> <span class="surname">Kreft</span>. </span><span class="copyright">Copyright © 2000 Addison Wesley Longman, Inc.. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley Longman
|
||||
. </span></span></p></div></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="strings.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="facets.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 7.
|
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. </span></span></p></div></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="strings.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="facets.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 7.
|
||||
Strings
|
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|
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</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Facets</td></tr></table></div></body></html>
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@ -1,9 +1,17 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Make</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="setup.html" title="Chapter 2. Setup"/><link rel="prev" href="configure.html" title="Configure"/><link rel="next" href="using.html" title="Chapter 3. Using"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Make</th></tr><tr><td align="left"><a accesskey="p" href="configure.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Setup</th><td align="right"> <a accesskey="n" href="using.html">Next</a></td></tr></table><hr/></div><div class="section" title="Make"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.setup.make"/>Make</h2></div></div></div><p>If you have never done this before, you should read the basic
|
||||
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Make</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="setup.html" title="Chapter 2. Setup"><link rel="prev" href="configure.html" title="Configure"><link rel="next" href="using.html" title="Chapter 3. Using"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Make</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="configure.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Setup</th><td width="20%" align="right"> <a accesskey="n" href="using.html">Next</a></td></tr></table><hr></div><div class="section" title="Make"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.intro.setup.make"></a>Make</h2></div></div></div><p>If you have never done this before, you should read the basic
|
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<a class="link" href="http://gcc.gnu.org/install/" target="_top">GCC Installation
|
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Instructions</a> first. Read <span class="emphasis"><em>all of them</em></span>.
|
||||
<span class="emphasis"><em>Twice.</em></span>
|
||||
</p><p>Then type: <span class="command"><strong>make</strong></span>, and congratulations, you've
|
||||
started to build.
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</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="configure.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="setup.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="using.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Configure </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 3. Using</td></tr></table></div></body></html>
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@ -1,15 +1,23 @@
|
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Memory</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="utilities.html" title="Chapter 6. Utilities"/><link rel="prev" href="pairs.html" title="Pairs"/><link rel="next" href="traits.html" title="Traits"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Memory</th></tr><tr><td align="left"><a accesskey="p" href="pairs.html">Prev</a> </td><th width="60%" align="center">Chapter 6.
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,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="utilities.html" title="Chapter 6. Utilities"><link rel="prev" href="pairs.html" title="Pairs"><link rel="next" href="traits.html" title="Traits"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Memory</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="pairs.html">Prev</a> </td><th width="60%" align="center">Chapter 6.
|
||||
Utilities
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="traits.html">Next</a></td></tr></table><hr/></div><div class="section" title="Memory"><div class="titlepage"><div><div><h2 class="title"><a id="std.util.memory"/>Memory</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="traits.html">Next</a></td></tr></table><hr></div><div class="section" title="Memory"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.util.memory"></a>Memory</h2></div></div></div><p>
|
||||
Memory contains three general areas. First, function and operator
|
||||
calls via <code class="function">new</code> and <code class="function">delete</code>
|
||||
operator or member function calls. Second, allocation via
|
||||
<code class="classname">allocator</code>. And finally, smart pointer and
|
||||
intelligent pointer abstractions.
|
||||
</p><div class="section" title="Allocators"><div class="titlepage"><div><div><h3 class="title"><a id="std.util.memory.allocator"/>Allocators</h3></div></div></div><p>
|
||||
</p><div class="section" title="Allocators"><div class="titlepage"><div><div><h3 class="title"><a name="std.util.memory.allocator"></a>Allocators</h3></div></div></div><p>
|
||||
Memory management for Standard Library entities is encapsulated in a
|
||||
class template called <code class="classname">allocator</code>. The
|
||||
<code class="classname">allocator</code> abstraction is used throughout the
|
||||
@ -17,9 +25,9 @@
|
||||
algorithms, and parts of iostreams. This class, and base classes of
|
||||
it, are the superset of available free store (<span class="quote">“<span class="quote">heap</span>”</span>)
|
||||
management classes.
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a id="allocator.req"/>Requirements</h4></div></div></div><p>
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a name="allocator.req"></a>Requirements</h4></div></div></div><p>
|
||||
The C++ standard only gives a few directives in this area:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
When you add elements to a container, and the container must
|
||||
allocate more memory to hold them, the container makes the
|
||||
request via its <span class="type">Allocator</span> template
|
||||
@ -54,11 +62,11 @@
|
||||
</p></li></ul></div><p>
|
||||
Complete details can be found in the C++ standard, look in
|
||||
<code class="constant">[20.4 Memory]</code>.
|
||||
</p></div><div class="section" title="Design Issues"><div class="titlepage"><div><div><h4 class="title"><a id="allocator.design_issues"/>Design Issues</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Design Issues"><div class="titlepage"><div><div><h4 class="title"><a name="allocator.design_issues"></a>Design Issues</h4></div></div></div><p>
|
||||
The easiest way of fulfilling the requirements is to call
|
||||
<code class="function">operator new</code> each time a container needs
|
||||
memory, and to call <code class="function">operator delete</code> each time
|
||||
the container releases memory. This method may be <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2001-05/msg00105.html">slower</a>
|
||||
the container releases memory. This method may be <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2001-05/msg00105.html" target="_top">slower</a>
|
||||
than caching the allocations and re-using previously-allocated
|
||||
memory, but has the advantage of working correctly across a wide
|
||||
variety of hardware and operating systems, including large
|
||||
@ -93,7 +101,7 @@
|
||||
or loading and unloading shared objects in memory. As such, using
|
||||
caching allocators on systems that do not support
|
||||
<code class="function">abi::__cxa_atexit</code> is not recommended.
|
||||
</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a id="allocator.impl"/>Implementation</h4></div></div></div><div class="section" title="Interface Design"><div class="titlepage"><div><div><h5 class="title"><a id="id496148"/>Interface Design</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a name="allocator.impl"></a>Implementation</h4></div></div></div><div class="section" title="Interface Design"><div class="titlepage"><div><div><h5 class="title"><a name="id609466"></a>Interface Design</h5></div></div></div><p>
|
||||
The only allocator interface that
|
||||
is supported is the standard C++ interface. As such, all STL
|
||||
containers have been adjusted, and all external allocators have
|
||||
@ -106,7 +114,7 @@
|
||||
</p><p>
|
||||
The base class that <code class="classname">allocator</code> is derived from
|
||||
may not be user-configurable.
|
||||
</p></div><div class="section" title="Selecting Default Allocation Policy"><div class="titlepage"><div><div><h5 class="title"><a id="id496177"/>Selecting Default Allocation Policy</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Selecting Default Allocation Policy"><div class="titlepage"><div><div><h5 class="title"><a name="id609496"></a>Selecting Default Allocation Policy</h5></div></div></div><p>
|
||||
It's difficult to pick an allocation strategy that will provide
|
||||
maximum utility, without excessively penalizing some behavior. In
|
||||
fact, it's difficult just deciding which typical actions to measure
|
||||
@ -114,14 +122,14 @@
|
||||
</p><p>
|
||||
Three synthetic benchmarks have been created that provide data
|
||||
that is used to compare different C++ allocators. These tests are:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Insertion.
|
||||
</p><p>
|
||||
Over multiple iterations, various STL container
|
||||
objects have elements inserted to some maximum amount. A variety
|
||||
of allocators are tested.
|
||||
Test source for <a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/testsuite/performance/23_containers/insert/sequence.cc?view=markup">sequence</a>
|
||||
and <a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/testsuite/performance/23_containers/insert/associative.cc?view=markup">associative</a>
|
||||
Test source for <a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/testsuite/performance/23_containers/insert/sequence.cc?view=markup" target="_top">sequence</a>
|
||||
and <a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/testsuite/performance/23_containers/insert/associative.cc?view=markup" target="_top">associative</a>
|
||||
containers.
|
||||
</p></li><li class="listitem"><p>
|
||||
Insertion and erasure in a multi-threaded environment.
|
||||
@ -130,20 +138,20 @@
|
||||
on a per-thread basis, as well as measuring thread contention
|
||||
for memory resources.
|
||||
Test source
|
||||
<a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/testsuite/performance/23_containers/insert_erase/associative.cc?view=markup">here</a>.
|
||||
<a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/testsuite/performance/23_containers/insert_erase/associative.cc?view=markup" target="_top">here</a>.
|
||||
</p></li><li class="listitem"><p>
|
||||
A threaded producer/consumer model.
|
||||
</p><p>
|
||||
Test source for
|
||||
<a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc++-v3/testsuite/performance/23_containers/producer_consumer/sequence.cc?view=markup">sequence</a>
|
||||
<a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc++-v3/testsuite/performance/23_containers/producer_consumer/sequence.cc?view=markup" target="_top">sequence</a>
|
||||
and
|
||||
<a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc++-v3/testsuite/performance/23_containers/producer_consumer/associative.cc?view=markup">associative</a>
|
||||
<a class="link" href="http://gcc.gnu.org/viewcvs/trunk/libstdc++-v3/testsuite/performance/23_containers/producer_consumer/associative.cc?view=markup" target="_top">associative</a>
|
||||
containers.
|
||||
</p></li></ol></div><p>
|
||||
The current default choice for
|
||||
<code class="classname">allocator</code> is
|
||||
<code class="classname">__gnu_cxx::new_allocator</code>.
|
||||
</p></div><div class="section" title="Disabling Memory Caching"><div class="titlepage"><div><div><h5 class="title"><a id="id496288"/>Disabling Memory Caching</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Disabling Memory Caching"><div class="titlepage"><div><div><h5 class="title"><a name="id609607"></a>Disabling Memory Caching</h5></div></div></div><p>
|
||||
In use, <code class="classname">allocator</code> may allocate and
|
||||
deallocate using implementation-specific strategies and
|
||||
heuristics. Because of this, a given call to an allocator object's
|
||||
@ -179,7 +187,7 @@
|
||||
environment, it likely means that you linked against objects
|
||||
built against the older library (objects which might still using the
|
||||
cached allocations...).
|
||||
</p></div></div><div class="section" title="Using a Specific Allocator"><div class="titlepage"><div><div><h4 class="title"><a id="allocator.using"/>Using a Specific Allocator</h4></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Using a Specific Allocator"><div class="titlepage"><div><div><h4 class="title"><a name="allocator.using"></a>Using a Specific Allocator</h4></div></div></div><p>
|
||||
You can specify different memory management schemes on a
|
||||
per-container basis, by overriding the default
|
||||
<span class="type">Allocator</span> template parameter. For example, an easy
|
||||
@ -190,7 +198,7 @@
|
||||
Likewise, a debugging form of whichever allocator is currently in use:
|
||||
</p><pre class="programlisting">
|
||||
std::deque <int, __gnu_cxx::debug_allocator<std::allocator<int> > > debug_deque;
|
||||
</pre></div><div class="section" title="Custom Allocators"><div class="titlepage"><div><div><h4 class="title"><a id="allocator.custom"/>Custom Allocators</h4></div></div></div><p>
|
||||
</pre></div><div class="section" title="Custom Allocators"><div class="titlepage"><div><div><h4 class="title"><a name="allocator.custom"></a>Custom Allocators</h4></div></div></div><p>
|
||||
Writing a portable C++ allocator would dictate that the interface
|
||||
would look much like the one specified for
|
||||
<code class="classname">allocator</code>. Additional member functions, but
|
||||
@ -199,7 +207,7 @@
|
||||
Probably the best place to start would be to copy one of the
|
||||
extension allocators: say a simple one like
|
||||
<code class="classname">new_allocator</code>.
|
||||
</p></div><div class="section" title="Extension Allocators"><div class="titlepage"><div><div><h4 class="title"><a id="allocator.ext"/>Extension Allocators</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Extension Allocators"><div class="titlepage"><div><div><h4 class="title"><a name="allocator.ext"></a>Extension Allocators</h4></div></div></div><p>
|
||||
Several other allocators are provided as part of this
|
||||
implementation. The location of the extension allocators and their
|
||||
names have changed, but in all cases, functionality is
|
||||
@ -209,7 +217,7 @@
|
||||
chart to track the changes.
|
||||
</p><p>
|
||||
More details on each of these extension allocators follows.
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
<code class="classname">new_allocator</code>
|
||||
</p><p>
|
||||
Simply wraps <code class="function">::operator new</code>
|
||||
@ -310,33 +318,33 @@
|
||||
of the used and unused memory locations. It has its own
|
||||
<a class="link" href="bitmap_allocator.html" title="Chapter 21. The bitmap_allocator">chapter</a>
|
||||
in the documentation.
|
||||
</p></li></ol></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a id="allocator.biblio"/>Bibliography</h4></div></div></div><div class="biblioentry"><a id="id496746"/><p><span class="citetitle"><em class="citetitle">
|
||||
</p></li></ol></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a name="allocator.biblio"></a>Bibliography</h4></div></div></div><div class="biblioentry"><a name="id610065"></a><p><span class="citetitle"><em class="citetitle">
|
||||
ISO/IEC 14882:1998 Programming languages - C++
|
||||
</em>. </span>
|
||||
isoc++_1998
|
||||
<span class="pagenums">20.4 Memory. </span></p></div><div class="biblioentry" title="The Standard Librarian: What Are Allocators Good For?"><a id="id496761"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.drdobbs.com/cpp/184403759">
|
||||
<span class="pagenums">20.4 Memory. </span></p></div><div class="biblioentry" title="The Standard Librarian: What Are Allocators Good For?"><a name="id610080"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.drdobbs.com/cpp/184403759" target="_top">
|
||||
The Standard Librarian: What Are Allocators Good For?
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Matt</span> <span class="surname">Austern</span>. </span><span class="publisher"><span class="publishername">
|
||||
</i>. </span><span class="author"><span class="firstname">Matt</span> <span class="surname">Austern</span>. </span><span class="publisher"><span class="publishername">
|
||||
C/C++ Users Journal
|
||||
. </span></span></p></div><div class="biblioentry" title="The Hoard Memory Allocator"><a id="id496792"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.cs.umass.edu/~emery/hoard">
|
||||
. </span></span></p></div><div class="biblioentry" title="The Hoard Memory Allocator"><a name="id610111"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.cs.umass.edu/~emery/hoard" target="_top">
|
||||
The Hoard Memory Allocator
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Emery</span> <span class="surname">Berger</span>. </span></p></div><div class="biblioentry" title="Reconsidering Custom Memory Allocation"><a id="id496816"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.cs.umass.edu/~emery/pubs/berger-oopsla2002.pdf">
|
||||
</i>. </span><span class="author"><span class="firstname">Emery</span> <span class="surname">Berger</span>. </span></p></div><div class="biblioentry" title="Reconsidering Custom Memory Allocation"><a name="id610134"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.cs.umass.edu/~emery/pubs/berger-oopsla2002.pdf" target="_top">
|
||||
Reconsidering Custom Memory Allocation
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Emery</span> <span class="surname">Berger</span>. </span><span class="author"><span class="firstname">Ben</span> <span class="surname">Zorn</span>. </span><span class="author"><span class="firstname">Kathryn</span> <span class="surname">McKinley</span>. </span><span class="copyright">Copyright © 2002 OOPSLA. </span></p></div><div class="biblioentry" title="Allocator Types"><a id="id496867"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.angelikalanger.com/Articles/C++Report/Allocators/Allocators.html">
|
||||
</i>. </span><span class="author"><span class="firstname">Emery</span> <span class="surname">Berger</span>. </span><span class="author"><span class="firstname">Ben</span> <span class="surname">Zorn</span>. </span><span class="author"><span class="firstname">Kathryn</span> <span class="surname">McKinley</span>. </span><span class="copyright">Copyright © 2002 OOPSLA. </span></p></div><div class="biblioentry" title="Allocator Types"><a name="id610186"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.angelikalanger.com/Articles/C++Report/Allocators/Allocators.html" target="_top">
|
||||
Allocator Types
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">Klaus</span> <span class="surname">Kreft</span>. </span><span class="author"><span class="firstname">Angelika</span> <span class="surname">Langer</span>. </span><span class="publisher"><span class="publishername">
|
||||
</i>. </span><span class="author"><span class="firstname">Klaus</span> <span class="surname">Kreft</span>. </span><span class="author"><span class="firstname">Angelika</span> <span class="surname">Langer</span>. </span><span class="publisher"><span class="publishername">
|
||||
C/C++ Users Journal
|
||||
. </span></span></p></div><div class="biblioentry"><a id="id496906"/><p><span class="citetitle"><em class="citetitle">The C++ Programming Language</em>. </span><span class="author"><span class="firstname">Bjarne</span> <span class="surname">Stroustrup</span>. </span><span class="copyright">Copyright © 2000 . </span><span class="pagenums">19.4 Allocators. </span><span class="publisher"><span class="publishername">
|
||||
. </span></span></p></div><div class="biblioentry"><a name="id610225"></a><p><span class="citetitle"><em class="citetitle">The C++ Programming Language</em>. </span><span class="author"><span class="firstname">Bjarne</span> <span class="surname">Stroustrup</span>. </span><span class="copyright">Copyright © 2000 . </span><span class="pagenums">19.4 Allocators. </span><span class="publisher"><span class="publishername">
|
||||
Addison Wesley
|
||||
. </span></span></p></div><div class="biblioentry"><a id="id496943"/><p><span class="citetitle"><em class="citetitle">Yalloc: A Recycling C++ Allocator</em>. </span><span class="author"><span class="firstname">Felix</span> <span class="surname">Yen</span>. </span></p></div></div></div><div class="section" title="auto_ptr"><div class="titlepage"><div><div><h3 class="title"><a id="std.util.memory.auto_ptr"/>auto_ptr</h3></div></div></div><div class="section" title="Limitations"><div class="titlepage"><div><div><h4 class="title"><a id="auto_ptr.limitations"/>Limitations</h4></div></div></div><p>Explaining all of the fun and delicious things that can
|
||||
. </span></span></p></div><div class="biblioentry"><a name="id610262"></a><p><span class="citetitle"><em class="citetitle">Yalloc: A Recycling C++ Allocator</em>. </span><span class="author"><span class="firstname">Felix</span> <span class="surname">Yen</span>. </span></p></div></div></div><div class="section" title="auto_ptr"><div class="titlepage"><div><div><h3 class="title"><a name="std.util.memory.auto_ptr"></a>auto_ptr</h3></div></div></div><div class="section" title="Limitations"><div class="titlepage"><div><div><h4 class="title"><a name="auto_ptr.limitations"></a>Limitations</h4></div></div></div><p>Explaining all of the fun and delicious things that can
|
||||
happen with misuse of the <code class="classname">auto_ptr</code> class
|
||||
template (called <acronym class="acronym">AP</acronym> here) would take some
|
||||
time. Suffice it to say that the use of <acronym class="acronym">AP</acronym>
|
||||
@ -387,7 +395,7 @@
|
||||
to die. AP is trivial to write, however, so you could write your
|
||||
own <code class="code">auto_array_ptr</code> for that situation (in fact, this has
|
||||
been done many times; check the mailing lists, Usenet, Boost, etc).
|
||||
</p></div><div class="section" title="Use in Containers"><div class="titlepage"><div><div><h4 class="title"><a id="auto_ptr.using"/>Use in Containers</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Use in Containers"><div class="titlepage"><div><div><h4 class="title"><a name="auto_ptr.using"></a>Use in Containers</h4></div></div></div><p>
|
||||
</p><p>All of the <a class="link" href="containers.html" title="Chapter 9. Containers">containers</a>
|
||||
described in the standard library require their contained types
|
||||
to have, among other things, a copy constructor like this:
|
||||
@ -423,16 +431,16 @@
|
||||
}
|
||||
</pre><p>
|
||||
Should you try this with the checks enabled, you will see an error.
|
||||
</p></div></div><div class="section" title="shared_ptr"><div class="titlepage"><div><div><h3 class="title"><a id="std.util.memory.shared_ptr"/>shared_ptr</h3></div></div></div><p>
|
||||
</p></div></div><div class="section" title="shared_ptr"><div class="titlepage"><div><div><h3 class="title"><a name="std.util.memory.shared_ptr"></a>shared_ptr</h3></div></div></div><p>
|
||||
The shared_ptr class template stores a pointer, usually obtained via new,
|
||||
and implements shared ownership semantics.
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a id="shared_ptr.req"/>Requirements</h4></div></div></div><p>
|
||||
</p><div class="section" title="Requirements"><div class="titlepage"><div><div><h4 class="title"><a name="shared_ptr.req"></a>Requirements</h4></div></div></div><p>
|
||||
</p><p>
|
||||
The standard deliberately doesn't require a reference-counted
|
||||
implementation, allowing other techniques such as a
|
||||
circular-linked-list.
|
||||
</p><p>
|
||||
</p></div><div class="section" title="Design Issues"><div class="titlepage"><div><div><h4 class="title"><a id="shared_ptr.design_issues"/>Design Issues</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Design Issues"><div class="titlepage"><div><div><h4 class="title"><a name="shared_ptr.design_issues"></a>Design Issues</h4></div></div></div><p>
|
||||
The <code class="classname">shared_ptr</code> code is kindly donated to GCC by the Boost
|
||||
project and the original authors of the code. The basic design and
|
||||
algorithms are from Boost, the notes below describe details specific to
|
||||
@ -446,7 +454,7 @@ drops to zero.
|
||||
Derived classes override those functions to destroy resources in a context
|
||||
where the correct dynamic type is known. This is an application of the
|
||||
technique known as type erasure.
|
||||
</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a id="shared_ptr.impl"/>Implementation</h4></div></div></div><div class="section" title="Class Hierarchy"><div class="titlepage"><div><div><h5 class="title"><a id="id497294"/>Class Hierarchy</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h4 class="title"><a name="shared_ptr.impl"></a>Implementation</h4></div></div></div><div class="section" title="Class Hierarchy"><div class="titlepage"><div><div><h5 class="title"><a name="id610613"></a>Class Hierarchy</h5></div></div></div><p>
|
||||
A <code class="classname">shared_ptr<T></code> contains a pointer of
|
||||
type <span class="type">T*</span> and an object of type
|
||||
<code class="classname">__shared_count</code>. The shared_count contains a
|
||||
@ -493,9 +501,9 @@ C++11-only features are: rvalue-ref/move support, allocator support,
|
||||
aliasing constructor, make_shared & allocate_shared. Additionally,
|
||||
the constructors taking <code class="classname">auto_ptr</code> parameters are
|
||||
deprecated in C++11 mode.
|
||||
</p></div><div class="section" title="Thread Safety"><div class="titlepage"><div><div><h5 class="title"><a id="id497482"/>Thread Safety</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Thread Safety"><div class="titlepage"><div><div><h5 class="title"><a name="id610801"></a>Thread Safety</h5></div></div></div><p>
|
||||
The
|
||||
<a class="link" href="http://boost.org/libs/smart_ptr/shared_ptr.htm#ThreadSafety">Thread
|
||||
<a class="link" href="http://boost.org/libs/smart_ptr/shared_ptr.htm#ThreadSafety" target="_top">Thread
|
||||
Safety</a> section of the Boost shared_ptr documentation says "shared_ptr
|
||||
objects offer the same level of thread safety as built-in types."
|
||||
The implementation must ensure that concurrent updates to separate shared_ptr
|
||||
@ -538,7 +546,7 @@ compiler, standard library, platform etc. For the version of
|
||||
shared_ptr in libstdc++ the compiler and library are fixed, which
|
||||
makes things much simpler: we have an atomic CAS or we don't, see Lock
|
||||
Policy below for details.
|
||||
</p></div><div class="section" title="Selecting Lock Policy"><div class="titlepage"><div><div><h5 class="title"><a id="id497543"/>Selecting Lock Policy</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Selecting Lock Policy"><div class="titlepage"><div><div><h5 class="title"><a name="id610862"></a>Selecting Lock Policy</h5></div></div></div><p>
|
||||
</p><p>
|
||||
There is a single <code class="classname">_Sp_counted_base</code> class,
|
||||
which is a template parameterized on the enum
|
||||
@ -554,11 +562,11 @@ specialization will be used. This design is necessary because it would
|
||||
not be conforming for <code class="classname">shared_ptr</code> to have an
|
||||
extra template parameter, even if it had a default value. The
|
||||
available policies are:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
<code class="constant">_S_Atomic</code>
|
||||
</p><p>
|
||||
Selected when GCC supports a builtin atomic compare-and-swap operation
|
||||
on the target processor (see <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html">Atomic
|
||||
on the target processor (see <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html" target="_top">Atomic
|
||||
Builtins</a>.) The reference counts are maintained using a lock-free
|
||||
algorithm and GCC's atomic builtins, which provide the required memory
|
||||
synchronisation.
|
||||
@ -579,7 +587,7 @@ used when libstdc++ is built without <code class="literal">--enable-threads</cod
|
||||
<code class="filename">ext/atomicity.h</code>, which detect if the program
|
||||
is multi-threaded. If only one thread of execution exists in
|
||||
the program then less expensive non-atomic operations are used.
|
||||
</p></div><div class="section" title="Related functions and classes"><div class="titlepage"><div><div><h5 class="title"><a id="id497665"/>Related functions and classes</h5></div></div></div><div class="variablelist"><dl><dt><span class="term"><code class="code">dynamic_pointer_cast</code>, <code class="code">static_pointer_cast</code>,
|
||||
</p></div><div class="section" title="Related functions and classes"><div class="titlepage"><div><div><h5 class="title"><a name="id610983"></a>Related functions and classes</h5></div></div></div><div class="variablelist"><dl><dt><span class="term"><code class="code">dynamic_pointer_cast</code>, <code class="code">static_pointer_cast</code>,
|
||||
<code class="code">const_pointer_cast</code></span></dt><dd><p>
|
||||
As noted in N2351, these functions can be implemented non-intrusively using
|
||||
the alias constructor. However the aliasing constructor is only available
|
||||
@ -612,13 +620,13 @@ is called. Users should not try to use this.
|
||||
As well as the extra constructors, this implementation also needs some
|
||||
members of _Sp_counted_deleter to be protected where they could otherwise
|
||||
be private.
|
||||
</p></dd></dl></div></div></div><div class="section" title="Use"><div class="titlepage"><div><div><h4 class="title"><a id="shared_ptr.using"/>Use</h4></div></div></div><div class="section" title="Examples"><div class="titlepage"><div><div><h5 class="title"><a id="id510115"/>Examples</h5></div></div></div><p>
|
||||
</p></dd></dl></div></div></div><div class="section" title="Use"><div class="titlepage"><div><div><h4 class="title"><a name="shared_ptr.using"></a>Use</h4></div></div></div><div class="section" title="Examples"><div class="titlepage"><div><div><h5 class="title"><a name="id623434"></a>Examples</h5></div></div></div><p>
|
||||
Examples of use can be found in the testsuite, under
|
||||
<code class="filename">testsuite/tr1/2_general_utilities/shared_ptr</code>,
|
||||
<code class="filename">testsuite/20_util/shared_ptr</code>
|
||||
and
|
||||
<code class="filename">testsuite/20_util/weak_ptr</code>.
|
||||
</p></div><div class="section" title="Unresolved Issues"><div class="titlepage"><div><div><h5 class="title"><a id="id510145"/>Unresolved Issues</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Unresolved Issues"><div class="titlepage"><div><div><h5 class="title"><a name="id623464"></a>Unresolved Issues</h5></div></div></div><p>
|
||||
The <span class="emphasis"><em><code class="classname">shared_ptr</code> atomic access</em></span>
|
||||
clause in the C++11 standard is not implemented in GCC.
|
||||
</p><p>
|
||||
@ -654,33 +662,33 @@ be private.
|
||||
</p><p>
|
||||
tr1::_Sp_deleter could be a private member of tr1::__shared_count but it
|
||||
would alter the ABI.
|
||||
</p></div></div><div class="section" title="Acknowledgments"><div class="titlepage"><div><div><h4 class="title"><a id="shared_ptr.ack"/>Acknowledgments</h4></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Acknowledgments"><div class="titlepage"><div><div><h4 class="title"><a name="shared_ptr.ack"></a>Acknowledgments</h4></div></div></div><p>
|
||||
The original authors of the Boost shared_ptr, which is really nice
|
||||
code to work with, Peter Dimov in particular for his help and
|
||||
invaluable advice on thread safety. Phillip Jordan and Paolo
|
||||
Carlini for the lock policy implementation.
|
||||
</p></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a id="shared_ptr.biblio"/>Bibliography</h4></div></div></div><div class="biblioentry" title="Improving shared_ptr for C++0x, Revision 2"><a id="id510239"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2351.htm">
|
||||
</p></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h4 class="title"><a name="shared_ptr.biblio"></a>Bibliography</h4></div></div></div><div class="biblioentry" title="Improving shared_ptr for C++0x, Revision 2"><a name="id623557"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2351.htm" target="_top">
|
||||
Improving shared_ptr for C++0x, Revision 2
|
||||
</a>
|
||||
</em>. </span><span class="subtitle">
|
||||
</i>. </span><span class="subtitle">
|
||||
N2351
|
||||
. </span></p></div><div class="biblioentry" title="C++ Standard Library Active Issues List"><a id="id510258"/><p><span class="title"><em>
|
||||
<a class="link" href="http://open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2456.html">
|
||||
. </span></p></div><div class="biblioentry" title="C++ Standard Library Active Issues List"><a name="id623576"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2456.html" target="_top">
|
||||
C++ Standard Library Active Issues List
|
||||
</a>
|
||||
</em>. </span><span class="subtitle">
|
||||
</i>. </span><span class="subtitle">
|
||||
N2456
|
||||
. </span></p></div><div class="biblioentry" title="Working Draft, Standard for Programming Language C++"><a id="id510277"/><p><span class="title"><em>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2461.pdf">
|
||||
. </span></p></div><div class="biblioentry" title="Working Draft, Standard for Programming Language C++"><a name="id623595"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2461.pdf" target="_top">
|
||||
Working Draft, Standard for Programming Language C++
|
||||
</a>
|
||||
</em>. </span><span class="subtitle">
|
||||
</i>. </span><span class="subtitle">
|
||||
N2461
|
||||
. </span></p></div><div class="biblioentry" title="Boost C++ Libraries documentation, shared_ptr"><a id="id510296"/><p><span class="title"><em>
|
||||
<a class="link" href="http://boost.org/libs/smart_ptr/shared_ptr.htm">
|
||||
. </span></p></div><div class="biblioentry" title="Boost C++ Libraries documentation, shared_ptr"><a name="id623614"></a><p><span class="title"><i>
|
||||
<a class="link" href="http://boost.org/libs/smart_ptr/shared_ptr.htm" target="_top">
|
||||
Boost C++ Libraries documentation, shared_ptr
|
||||
</a>
|
||||
</em>. </span><span class="subtitle">
|
||||
</i>. </span><span class="subtitle">
|
||||
N2461
|
||||
. </span></p></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="pairs.html">Prev</a> </td><td align="center"><a accesskey="u" href="utilities.html">Up</a></td><td align="right"> <a accesskey="n" href="traits.html">Next</a></td></tr><tr><td align="left" valign="top">Pairs </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Traits</td></tr></table></div></body></html>
|
||||
. </span></p></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="pairs.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="utilities.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="traits.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Pairs </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Traits</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 20. The mt_allocator</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , allocator "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="bk01pt03ch19s07.html" title="Diagnostics"/><link rel="next" href="bk01pt03ch20s02.html" title="Design Issues"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 20. The mt_allocator</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s07.html">Prev</a> </td><th width="60%" align="center">Part III.
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|
||||
Extensions
|
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|
||||
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|
||||
</p><div class="section" title="Intro"><div class="titlepage"><div><div><h2 class="title"><a id="allocator.mt.intro"/>Intro</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch20s02.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 20. The mt_allocator"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.allocator.mt"></a>Chapter 20. The mt_allocator</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="mt_allocator.html#allocator.mt.intro">Intro</a></span></dt><dt><span class="section"><a href="bk01pt03ch20s02.html">Design Issues</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch20s02.html#allocator.mt.overview">Overview</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch20s03.html">Implementation</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch20s03.html#allocator.mt.tune">Tunable Parameters</a></span></dt><dt><span class="section"><a href="bk01pt03ch20s03.html#allocator.mt.init">Initialization</a></span></dt><dt><span class="section"><a href="bk01pt03ch20s03.html#allocator.mt.deallocation">Deallocation Notes</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch20s04.html">Single Thread Example</a></span></dt><dt><span class="section"><a href="bk01pt03ch20s05.html">Multiple Thread Example</a></span></dt></dl></div><p>
|
||||
</p><div class="section" title="Intro"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="allocator.mt.intro"></a>Intro</h2></div></div></div><p>
|
||||
The mt allocator [hereinafter referred to simply as "the allocator"]
|
||||
is a fixed size (power of two) allocator that was initially
|
||||
developed specifically to suit the needs of multi threaded
|
||||
@ -20,4 +32,4 @@
|
||||
</p><p>
|
||||
The aim of this document is to describe - from an application point of
|
||||
view - the "inner workings" of the allocator.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch19s07.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch20s02.html">Next</a></td></tr><tr><td align="left" valign="top">Diagnostics </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Design Issues</td></tr></table></div></body></html>
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||||
|
||||
@ -1,22 +1,30 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 12. Numerics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="algorithms.html" title="Chapter 11. Algorithms"/><link rel="next" href="generalized_numeric_operations.html" title="Generalized Operations"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 12.
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Numerics
|
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|
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|
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|
||||
Numerics
|
||||
<a id="id515397" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="numerics.html#std.numerics.complex">Complex</a></span></dt><dd><dl><dt><span class="section"><a href="numerics.html#numerics.complex.processing">complex Processing</a></span></dt></dl></dd><dt><span class="section"><a href="generalized_numeric_operations.html">Generalized Operations</a></span></dt><dt><span class="section"><a href="numerics_and_c.html">Interacting with C</a></span></dt><dd><dl><dt><span class="section"><a href="numerics_and_c.html#numerics.c.array">Numerics vs. Arrays</a></span></dt><dt><span class="section"><a href="numerics_and_c.html#numerics.c.c99">C99</a></span></dt></dl></dd></dl></div><div class="section" title="Complex"><div class="titlepage"><div><div><h2 class="title"><a id="std.numerics.complex"/>Complex</h2></div></div></div><p>
|
||||
</p><div class="section" title="complex Processing"><div class="titlepage"><div><div><h3 class="title"><a id="numerics.complex.processing"/>complex Processing</h3></div></div></div><p>
|
||||
<a class="indexterm" name="id628715"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="numerics.html#std.numerics.complex">Complex</a></span></dt><dd><dl><dt><span class="section"><a href="numerics.html#numerics.complex.processing">complex Processing</a></span></dt></dl></dd><dt><span class="section"><a href="generalized_numeric_operations.html">Generalized Operations</a></span></dt><dt><span class="section"><a href="numerics_and_c.html">Interacting with C</a></span></dt><dd><dl><dt><span class="section"><a href="numerics_and_c.html#numerics.c.array">Numerics vs. Arrays</a></span></dt><dt><span class="section"><a href="numerics_and_c.html#numerics.c.c99">C99</a></span></dt></dl></dd></dl></div><div class="section" title="Complex"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.numerics.complex"></a>Complex</h2></div></div></div><p>
|
||||
</p><div class="section" title="complex Processing"><div class="titlepage"><div><div><h3 class="title"><a name="numerics.complex.processing"></a>complex Processing</h3></div></div></div><p>
|
||||
</p><p>Using <code class="code">complex<></code> becomes even more comple- er, sorry,
|
||||
<span class="emphasis"><em>complicated</em></span>, with the not-quite-gratuitously-incompatible
|
||||
addition of complex types to the C language. David Tribble has
|
||||
compiled a list of C++98 and C99 conflict points; his description of
|
||||
C's new type versus those of C++ and how to get them playing together
|
||||
nicely is
|
||||
<a class="link" href="http://david.tribble.com/text/cdiffs.htm#C99-complex">here</a>.
|
||||
<a class="link" href="http://david.tribble.com/text/cdiffs.htm#C99-complex" target="_top">here</a>.
|
||||
</p><p><code class="code">complex<></code> is intended to be instantiated with a
|
||||
floating-point type. As long as you meet that and some other basic
|
||||
requirements, then the resulting instantiation has all of the usual
|
||||
@ -28,7 +36,7 @@
|
||||
<code class="code"><complex.h></code> includes both <code class="code"><complex></code>
|
||||
and the C99 <code class="code"><complex.h></code> (if the C library provides
|
||||
it).
|
||||
</p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="algorithms.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="generalized_numeric_operations.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 11.
|
||||
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|
||||
Algorithms
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Generalized Operations</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Generalized Operations</td></tr></table></div></body></html>
|
||||
|
||||
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|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Interacting with C</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="numerics.html" title="Chapter 12. Numerics"/><link rel="prev" href="generalized_numeric_operations.html" title="Generalized Operations"/><link rel="next" href="io.html" title="Chapter 13. Input and Output"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Interacting with C</th></tr><tr><td align="left"><a accesskey="p" href="generalized_numeric_operations.html">Prev</a> </td><th width="60%" align="center">Chapter 12.
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"><meta name="keywords" content="
|
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ISO C++
|
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,
|
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runtime
|
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,
|
||||
library
|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="numerics.html" title="Chapter 12. Numerics"><link rel="prev" href="generalized_numeric_operations.html" title="Generalized Operations"><link rel="next" href="io.html" title="Chapter 13. Input and Output"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Interacting with C</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="generalized_numeric_operations.html">Prev</a> </td><th width="60%" align="center">Chapter 12.
|
||||
Numerics
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="io.html">Next</a></td></tr></table><hr/></div><div class="section" title="Interacting with C"><div class="titlepage"><div><div><h2 class="title"><a id="std.numerics.c"/>Interacting with C</h2></div></div></div><div class="section" title="Numerics vs. Arrays"><div class="titlepage"><div><div><h3 class="title"><a id="numerics.c.array"/>Numerics vs. Arrays</h3></div></div></div><p>One of the major reasons why FORTRAN can chew through numbers so well
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="io.html">Next</a></td></tr></table><hr></div><div class="section" title="Interacting with C"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.numerics.c"></a>Interacting with C</h2></div></div></div><div class="section" title="Numerics vs. Arrays"><div class="titlepage"><div><div><h3 class="title"><a name="numerics.c.array"></a>Numerics vs. Arrays</h3></div></div></div><p>One of the major reasons why FORTRAN can chew through numbers so well
|
||||
is that it is defined to be free of pointer aliasing, an assumption
|
||||
that C89 is not allowed to make, and neither is C++98. C99 adds a new
|
||||
keyword, <code class="code">restrict</code>, to apply to individual pointers. The
|
||||
@ -18,7 +26,7 @@
|
||||
speaking this is only one of the five template classes, and they are
|
||||
designed to be familiar to people who have worked with the BLAS
|
||||
libraries before.
|
||||
</p></div><div class="section" title="C99"><div class="titlepage"><div><div><h3 class="title"><a id="numerics.c.c99"/>C99</h3></div></div></div><p>In addition to the other topics on this page, we'll note here some
|
||||
</p></div><div class="section" title="C99"><div class="titlepage"><div><div><h3 class="title"><a name="numerics.c.c99"></a>C99</h3></div></div></div><p>In addition to the other topics on this page, we'll note here some
|
||||
of the C99 features that appear in libstdc++.
|
||||
</p><p>The C99 features depend on the <code class="code">--enable-c99</code> configure flag.
|
||||
This flag is already on by default, but it can be disabled by the
|
||||
@ -31,7 +39,7 @@
|
||||
are supported, as is the <code class="code">lldiv_t</code> typedef. Also supported
|
||||
are the wide character functions using 'long long', like
|
||||
<code class="code">wcstoll</code>.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="generalized_numeric_operations.html">Prev</a> </td><td align="center"><a accesskey="u" href="numerics.html">Up</a></td><td align="right"> <a accesskey="n" href="io.html">Next</a></td></tr><tr><td align="left" valign="top">Generalized Operations </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 13.
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="generalized_numeric_operations.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="numerics.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="io.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Generalized Operations </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 13.
|
||||
Input and Output
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Pairs</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="utilities.html" title="Chapter 6. Utilities"/><link rel="prev" href="utilities.html" title="Chapter 6. Utilities"/><link rel="next" href="memory.html" title="Memory"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Pairs</th></tr><tr><td align="left"><a accesskey="p" href="utilities.html">Prev</a> </td><th width="60%" align="center">Chapter 6.
|
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Pairs</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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ISO C++
|
||||
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|
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library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="utilities.html" title="Chapter 6. Utilities"><link rel="prev" href="utilities.html" title="Chapter 6. Utilities"><link rel="next" href="memory.html" title="Memory"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Pairs</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="utilities.html">Prev</a> </td><th width="60%" align="center">Chapter 6.
|
||||
Utilities
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="memory.html">Next</a></td></tr></table><hr/></div><div class="section" title="Pairs"><div class="titlepage"><div><div><h2 class="title"><a id="std.util.pairs"/>Pairs</h2></div></div></div><p>The <code class="code">pair<T1,T2></code> is a simple and handy way to
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="memory.html">Next</a></td></tr></table><hr></div><div class="section" title="Pairs"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.util.pairs"></a>Pairs</h2></div></div></div><p>The <code class="code">pair<T1,T2></code> is a simple and handy way to
|
||||
carry around a pair of objects. One is of type T1, and another of
|
||||
type T2; they may be the same type, but you don't get anything
|
||||
extra if they are. The two members can be accessed directly, as
|
||||
@ -38,7 +46,7 @@
|
||||
instance of a pair instantiated on their respective types:
|
||||
</p><pre class="programlisting">
|
||||
pair<int,MyClass> p = make_pair(4,myobject);
|
||||
</pre></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="utilities.html">Prev</a> </td><td align="center"><a accesskey="u" href="utilities.html">Up</a></td><td align="right"> <a accesskey="n" href="memory.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 6.
|
||||
</pre></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="utilities.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="utilities.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="memory.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 6.
|
||||
Utilities
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Memory</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Memory</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,23 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 18. Parallel Mode</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , parallel "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="bk01pt03ch17s04.html" title="Design"/><link rel="next" href="bk01pt03ch18s02.html" title="Semantics"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 18. Parallel Mode</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch17s04.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 18. Parallel Mode</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
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C++
|
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,
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||||
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|
||||
,
|
||||
parallel
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="bk01pt03ch17s04.html" title="Design"><link rel="next" href="bk01pt03ch18s02.html" title="Semantics"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 18. Parallel Mode</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch17s04.html">Prev</a> </td><th width="60%" align="center">Part III.
|
||||
Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="bk01pt03ch18s02.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 18. Parallel Mode"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.parallel_mode"/>Chapter 18. Parallel Mode</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="parallel_mode.html#manual.ext.parallel_mode.intro">Intro</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s02.html">Semantics</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s03.html">Using</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch18s03.html#parallel_mode.using.prereq_flags">Prerequisite Compiler Flags</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s03.html#parallel_mode.using.parallel_mode">Using Parallel Mode</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s03.html#parallel_mode.using.specific">Using Specific Parallel Components</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch18s04.html">Design</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.intro">Interface Basics</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.tuning">Configuration and Tuning</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.tuning.omp">Setting up the OpenMP Environment</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.tuning.compile">Compile Time Switches</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.tuning.settings">Run Time Settings and Defaults</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.impl">Implementation Namespaces</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch18s05.html">Testing</a></span></dt><dt><span class="bibliography"><a href="parallel_mode.html#parallel_mode.biblio">Bibliography</a></span></dt></dl></div><p> The libstdc++ parallel mode is an experimental parallel
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch18s02.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 18. Parallel Mode"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.parallel_mode"></a>Chapter 18. Parallel Mode</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="parallel_mode.html#manual.ext.parallel_mode.intro">Intro</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s02.html">Semantics</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s03.html">Using</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch18s03.html#parallel_mode.using.prereq_flags">Prerequisite Compiler Flags</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s03.html#parallel_mode.using.parallel_mode">Using Parallel Mode</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s03.html#parallel_mode.using.specific">Using Specific Parallel Components</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch18s04.html">Design</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.intro">Interface Basics</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.tuning">Configuration and Tuning</a></span></dt><dd><dl><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.tuning.omp">Setting up the OpenMP Environment</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.tuning.compile">Compile Time Switches</a></span></dt><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.tuning.settings">Run Time Settings and Defaults</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch18s04.html#parallel_mode.design.impl">Implementation Namespaces</a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt03ch18s05.html">Testing</a></span></dt><dt><span class="bibliography"><a href="parallel_mode.html#parallel_mode.biblio">Bibliography</a></span></dt></dl></div><p> The libstdc++ parallel mode is an experimental parallel
|
||||
implementation of many algorithms the C++ Standard Library.
|
||||
</p><p>
|
||||
Several of the standard algorithms, for instance
|
||||
@ -11,14 +25,14 @@ Several of the standard algorithms, for instance
|
||||
annotations. These parallel mode constructs and can be invoked by
|
||||
explicit source declaration or by compiling existing sources with a
|
||||
specific compiler flag.
|
||||
</p><div class="section" title="Intro"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.parallel_mode.intro"/>Intro</h2></div></div></div><p>The following library components in the include
|
||||
<code class="filename">numeric</code> are included in the parallel mode:</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="function">std::accumulate</code></p></li><li class="listitem"><p><code class="function">std::adjacent_difference</code></p></li><li class="listitem"><p><code class="function">std::inner_product</code></p></li><li class="listitem"><p><code class="function">std::partial_sum</code></p></li></ul></div><p>The following library components in the include
|
||||
<code class="filename">algorithm</code> are included in the parallel mode:</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p><code class="function">std::adjacent_find</code></p></li><li class="listitem"><p><code class="function">std::count</code></p></li><li class="listitem"><p><code class="function">std::count_if</code></p></li><li class="listitem"><p><code class="function">std::equal</code></p></li><li class="listitem"><p><code class="function">std::find</code></p></li><li class="listitem"><p><code class="function">std::find_if</code></p></li><li class="listitem"><p><code class="function">std::find_first_of</code></p></li><li class="listitem"><p><code class="function">std::for_each</code></p></li><li class="listitem"><p><code class="function">std::generate</code></p></li><li class="listitem"><p><code class="function">std::generate_n</code></p></li><li class="listitem"><p><code class="function">std::lexicographical_compare</code></p></li><li class="listitem"><p><code class="function">std::mismatch</code></p></li><li class="listitem"><p><code class="function">std::search</code></p></li><li class="listitem"><p><code class="function">std::search_n</code></p></li><li class="listitem"><p><code class="function">std::transform</code></p></li><li class="listitem"><p><code class="function">std::replace</code></p></li><li class="listitem"><p><code class="function">std::replace_if</code></p></li><li class="listitem"><p><code class="function">std::max_element</code></p></li><li class="listitem"><p><code class="function">std::merge</code></p></li><li class="listitem"><p><code class="function">std::min_element</code></p></li><li class="listitem"><p><code class="function">std::nth_element</code></p></li><li class="listitem"><p><code class="function">std::partial_sort</code></p></li><li class="listitem"><p><code class="function">std::partition</code></p></li><li class="listitem"><p><code class="function">std::random_shuffle</code></p></li><li class="listitem"><p><code class="function">std::set_union</code></p></li><li class="listitem"><p><code class="function">std::set_intersection</code></p></li><li class="listitem"><p><code class="function">std::set_symmetric_difference</code></p></li><li class="listitem"><p><code class="function">std::set_difference</code></p></li><li class="listitem"><p><code class="function">std::sort</code></p></li><li class="listitem"><p><code class="function">std::stable_sort</code></p></li><li class="listitem"><p><code class="function">std::unique_copy</code></p></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h2 class="title"><a id="parallel_mode.biblio"/>Bibliography</h2></div></div></div><div class="biblioentry"><a id="id521337"/><p><span class="citetitle"><em class="citetitle">
|
||||
</p><div class="section" title="Intro"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.ext.parallel_mode.intro"></a>Intro</h2></div></div></div><p>The following library components in the include
|
||||
<code class="filename">numeric</code> are included in the parallel mode:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="function">std::accumulate</code></p></li><li class="listitem"><p><code class="function">std::adjacent_difference</code></p></li><li class="listitem"><p><code class="function">std::inner_product</code></p></li><li class="listitem"><p><code class="function">std::partial_sum</code></p></li></ul></div><p>The following library components in the include
|
||||
<code class="filename">algorithm</code> are included in the parallel mode:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="function">std::adjacent_find</code></p></li><li class="listitem"><p><code class="function">std::count</code></p></li><li class="listitem"><p><code class="function">std::count_if</code></p></li><li class="listitem"><p><code class="function">std::equal</code></p></li><li class="listitem"><p><code class="function">std::find</code></p></li><li class="listitem"><p><code class="function">std::find_if</code></p></li><li class="listitem"><p><code class="function">std::find_first_of</code></p></li><li class="listitem"><p><code class="function">std::for_each</code></p></li><li class="listitem"><p><code class="function">std::generate</code></p></li><li class="listitem"><p><code class="function">std::generate_n</code></p></li><li class="listitem"><p><code class="function">std::lexicographical_compare</code></p></li><li class="listitem"><p><code class="function">std::mismatch</code></p></li><li class="listitem"><p><code class="function">std::search</code></p></li><li class="listitem"><p><code class="function">std::search_n</code></p></li><li class="listitem"><p><code class="function">std::transform</code></p></li><li class="listitem"><p><code class="function">std::replace</code></p></li><li class="listitem"><p><code class="function">std::replace_if</code></p></li><li class="listitem"><p><code class="function">std::max_element</code></p></li><li class="listitem"><p><code class="function">std::merge</code></p></li><li class="listitem"><p><code class="function">std::min_element</code></p></li><li class="listitem"><p><code class="function">std::nth_element</code></p></li><li class="listitem"><p><code class="function">std::partial_sort</code></p></li><li class="listitem"><p><code class="function">std::partition</code></p></li><li class="listitem"><p><code class="function">std::random_shuffle</code></p></li><li class="listitem"><p><code class="function">std::set_union</code></p></li><li class="listitem"><p><code class="function">std::set_intersection</code></p></li><li class="listitem"><p><code class="function">std::set_symmetric_difference</code></p></li><li class="listitem"><p><code class="function">std::set_difference</code></p></li><li class="listitem"><p><code class="function">std::sort</code></p></li><li class="listitem"><p><code class="function">std::stable_sort</code></p></li><li class="listitem"><p><code class="function">std::unique_copy</code></p></li></ul></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h2 class="title"><a name="parallel_mode.biblio"></a>Bibliography</h2></div></div></div><div class="biblioentry"><a name="id634656"></a><p><span class="citetitle"><em class="citetitle">
|
||||
Parallelization of Bulk Operations for STL Dictionaries
|
||||
</em>. </span><span class="author"><span class="firstname">Johannes</span> <span class="surname">Singler</span>. </span><span class="author"><span class="firstname">Leonor</span> <span class="surname">Frias</span>. </span><span class="copyright">Copyright © 2007 . </span><span class="publisher"><span class="publishername">
|
||||
Workshop on Highly Parallel Processing on a Chip (HPPC) 2007. (LNCS)
|
||||
. </span></span></p></div><div class="biblioentry"><a id="id521380"/><p><span class="citetitle"><em class="citetitle">
|
||||
. </span></span></p></div><div class="biblioentry"><a name="id634698"></a><p><span class="citetitle"><em class="citetitle">
|
||||
The Multi-Core Standard Template Library
|
||||
</em>. </span><span class="author"><span class="firstname">Johannes</span> <span class="surname">Singler</span>. </span><span class="author"><span class="firstname">Peter</span> <span class="surname">Sanders</span>. </span><span class="author"><span class="firstname">Felix</span> <span class="surname">Putze</span>. </span><span class="copyright">Copyright © 2007 . </span><span class="publisher"><span class="publishername">
|
||||
Euro-Par 2007: Parallel Processing. (LNCS 4641)
|
||||
. </span></span></p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch17s04.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch18s02.html">Next</a></td></tr><tr><td align="left" valign="top">Design </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Semantics</td></tr></table></div></body></html>
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||||
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 22. Policy-Based Data Structures</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" 	ISO C++ , 	policy , 	container , 	data , 	structure , 	associated , 	tree , 	trie , 	hash , 	metaprogramming "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="extensions.html" title="Part III. Extensions"/><link rel="prev" href="bk01pt03ch21s02.html" title="Implementation"/><link rel="next" href="policy_data_structures_using.html" title="Using"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 22. Policy-Based Data Structures</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt03ch21s02.html">Prev</a> </td><th width="60%" align="center">Part III.
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|
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|
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data
|
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|
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structure
|
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|
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associated
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tree
|
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|
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"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III. Extensions"><link rel="prev" href="bk01pt03ch21s02.html" title="Implementation"><link rel="next" href="policy_data_structures_using.html" title="Using"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 22. Policy-Based Data Structures</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch21s02.html">Prev</a> </td><th width="60%" align="center">Part III.
|
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Extensions
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="policy_data_structures_using.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 22. Policy-Based Data Structures"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.containers.pbds"/>Chapter 22. Policy-Based Data Structures</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="policy_data_structures.html#pbds.intro">Intro</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.issues">Performance Issues</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.issues.associative">Associative</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.issues.priority_queue">Priority Que</a></span></dt></dl></dd><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.motivation">Goals</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.motivation.associative">Associative</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#motivation.associative.policy">Policy Choices</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.associative.underlying">Underlying Data Structures</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.associative.iterators">Iterators</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.associative.functions">Functional</a></span></dt></dl></dd><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.motivation.priority_queue">Priority Queues</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#motivation.priority_queue.policy">Policy Choices</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.priority_queue.underlying">Underlying Data Structures</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.priority_queue.binary_heap">Binary Heaps</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="policy_data_structures_using.html">Using</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.organization">Organization</a></span></dt><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.tutorial">Tutorial</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.tutorial.basic">Basic Use</a></span></dt><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.tutorial.configuring">
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="policy_data_structures_using.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 22. Policy-Based Data Structures"><div class="titlepage"><div><div><h2 class="title"><a name="manual.ext.containers.pbds"></a>Chapter 22. Policy-Based Data Structures</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="policy_data_structures.html#pbds.intro">Intro</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.issues">Performance Issues</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.issues.associative">Associative</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.issues.priority_queue">Priority Que</a></span></dt></dl></dd><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.motivation">Goals</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.motivation.associative">Associative</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#motivation.associative.policy">Policy Choices</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.associative.underlying">Underlying Data Structures</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.associative.iterators">Iterators</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.associative.functions">Functional</a></span></dt></dl></dd><dt><span class="section"><a href="policy_data_structures.html#pbds.intro.motivation.priority_queue">Priority Queues</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures.html#motivation.priority_queue.policy">Policy Choices</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.priority_queue.underlying">Underlying Data Structures</a></span></dt><dt><span class="section"><a href="policy_data_structures.html#motivation.priority_queue.binary_heap">Binary Heaps</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="policy_data_structures_using.html">Using</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.organization">Organization</a></span></dt><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.tutorial">Tutorial</a></span></dt><dd><dl><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.tutorial.basic">Basic Use</a></span></dt><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.tutorial.configuring">
|
||||
Configuring via Template Parameters
|
||||
</a></span></dt><dt><span class="section"><a href="policy_data_structures_using.html#pbds.using.tutorial.traits">
|
||||
Querying Container Attributes
|
||||
@ -67,7 +95,7 @@
|
||||
Text <code class="function">modify</code> Down
|
||||
</a></span></dt></dl></dd><dt><span class="section"><a href="policy_based_data_structures_test.html#pbds.test.performance.observations">Observations</a></span></dt><dd><dl><dt><span class="section"><a href="policy_based_data_structures_test.html#observations.associative">Associative</a></span></dt><dt><span class="section"><a href="policy_based_data_structures_test.html#observations.priority_queue">Priority_Queue</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="policy_data_structures_biblio.html">Acknowledgments</a></span></dt><dt><span class="bibliography"><a href="policy_data_structures.html#pbds.biblio">
|
||||
Bibliography
|
||||
</a></span></dt></dl></div><div class="section" title="Intro"><div class="titlepage"><div><div><h2 class="title"><a id="pbds.intro"/>Intro</h2></div></div></div><p>
|
||||
</a></span></dt></dl></div><div class="section" title="Intro"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="pbds.intro"></a>Intro</h2></div></div></div><p>
|
||||
This is a library of policy-based elementary data structures:
|
||||
associative containers and priority queues. It is designed for
|
||||
high-performance, flexibility, semantic safety, and conformance to
|
||||
@ -75,7 +103,7 @@
|
||||
<code class="literal">std::tr1</code> (except for some points where it differs
|
||||
by design).
|
||||
</p><p>
|
||||
</p><div class="section" title="Performance Issues"><div class="titlepage"><div><div><h3 class="title"><a id="pbds.intro.issues"/>Performance Issues</h3></div></div></div><p>
|
||||
</p><div class="section" title="Performance Issues"><div class="titlepage"><div><div><h3 class="title"><a name="pbds.intro.issues"></a>Performance Issues</h3></div></div></div><p>
|
||||
</p><p>
|
||||
An attempt is made to categorize the wide variety of possible
|
||||
container designs in terms of performance-impacting factors. These
|
||||
@ -95,7 +123,7 @@
|
||||
</p><p>
|
||||
Specific issues found while unraveling performance factors in the
|
||||
design of associative containers and priority queues follow.
|
||||
</p><div class="section" title="Associative"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.intro.issues.associative"/>Associative</h4></div></div></div><p>
|
||||
</p><div class="section" title="Associative"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.intro.issues.associative"></a>Associative</h4></div></div></div><p>
|
||||
Associative containers depend on their composite policies to a very
|
||||
large extent. Implicitly hard-wiring policies can hamper their
|
||||
performance and limit their functionality. An efficient hash-based
|
||||
@ -136,7 +164,7 @@
|
||||
is a red-black tree, then splitting a reference to the container is
|
||||
exception-free; if it is an ordered-vector tree, exceptions can be
|
||||
thrown.
|
||||
</p></div><div class="section" title="Priority Que"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.intro.issues.priority_queue"/>Priority Que</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Priority Que"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.intro.issues.priority_queue"></a>Priority Que</h4></div></div></div><p>
|
||||
Priority queues are useful when one needs to efficiently access a
|
||||
minimum (or maximum) value as the set of values changes.
|
||||
</p><p>
|
||||
@ -178,7 +206,7 @@
|
||||
expense of more difference in the the kinds of operations that the
|
||||
underlying data structure can support. These differences pose a
|
||||
challenge when creating a uniform interface for priority queues.
|
||||
</p></div></div><div class="section" title="Goals"><div class="titlepage"><div><div><h3 class="title"><a id="pbds.intro.motivation"/>Goals</h3></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Goals"><div class="titlepage"><div><div><h3 class="title"><a name="pbds.intro.motivation"></a>Goals</h3></div></div></div><p>
|
||||
Many fine associative-container libraries were already written,
|
||||
most notably, the C++ standard's associative containers. Why
|
||||
then write another library? This section shows some possible
|
||||
@ -189,14 +217,14 @@
|
||||
only then adding hash-based containers, which are fundamentally
|
||||
different), did not standardize priority queues as containers,
|
||||
and (in our opinion) overloads the iterator concept.
|
||||
</p><div class="section" title="Associative"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.intro.motivation.associative"/>Associative</h4></div></div></div><p>
|
||||
</p><div class="section" title="Policy Choices"><div class="titlepage"><div><div><h5 class="title"><a id="motivation.associative.policy"/>Policy Choices</h5></div></div></div><p>
|
||||
</p><div class="section" title="Associative"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.intro.motivation.associative"></a>Associative</h4></div></div></div><p>
|
||||
</p><div class="section" title="Policy Choices"><div class="titlepage"><div><div><h5 class="title"><a name="motivation.associative.policy"></a>Policy Choices</h5></div></div></div><p>
|
||||
Associative containers require a relatively large number of
|
||||
policies to function efficiently in various settings. In some
|
||||
cases this is needed for making their common operations more
|
||||
efficient, and in other cases this allows them to support a
|
||||
larger set of operations
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Hash-based containers, for example, support look-up and
|
||||
insertion methods (<code class="function">find</code> and
|
||||
<code class="function">insert</code>). In order to locate elements
|
||||
@ -251,7 +279,7 @@
|
||||
these invariants, one must supply some policy that is aware
|
||||
of these changes. Without this, it would be better to use a
|
||||
linked list (in itself very efficient for these purposes).
|
||||
</p></li></ol></div><div class="figure"><a id="id527047"/><p class="title"><strong>Figure 22.1. Node Invariants</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_node_invariants.png" style="text-align: middle" alt="Node Invariants"/></div></div></div><br class="figure-break"/></div><div class="section" title="Underlying Data Structures"><div class="titlepage"><div><div><h5 class="title"><a id="motivation.associative.underlying"/>Underlying Data Structures</h5></div></div></div><p>
|
||||
</p></li></ol></div><div class="figure"><a name="id640366"></a><p class="title"><b>Figure 22.1. Node Invariants</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_node_invariants.png" align="middle" alt="Node Invariants"></div></div></div><br class="figure-break"></div><div class="section" title="Underlying Data Structures"><div class="titlepage"><div><div><h5 class="title"><a name="motivation.associative.underlying"></a>Underlying Data Structures</h5></div></div></div><p>
|
||||
The standard C++ library contains associative containers based on
|
||||
red-black trees and collision-chaining hash tables. These are
|
||||
very useful, but they are not ideal for all types of
|
||||
@ -259,7 +287,7 @@
|
||||
</p><p>
|
||||
The figure below shows the different underlying data structures
|
||||
currently supported in this library.
|
||||
</p><div class="figure"><a id="id527103"/><p class="title"><strong>Figure 22.2. Underlying Associative Data Structures</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_different_underlying_dss_1.png" style="text-align: middle" alt="Underlying Associative Data Structures"/></div></div></div><br class="figure-break"/><p>
|
||||
</p><div class="figure"><a name="id640422"></a><p class="title"><b>Figure 22.2. Underlying Associative Data Structures</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_different_underlying_dss_1.png" align="middle" alt="Underlying Associative Data Structures"></div></div></div><br class="figure-break"><p>
|
||||
A shows a collision-chaining hash-table, B shows a probing
|
||||
hash-table, C shows a red-black tree, D shows a splay tree, E shows
|
||||
a tree based on an ordered vector(implicit in the order of the
|
||||
@ -308,7 +336,7 @@
|
||||
There are various other differences based on the container's
|
||||
underlying data structure. For one, they can be constructed by,
|
||||
and queried for, different policies. Furthermore:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Containers based on C, D, E and F store elements in a
|
||||
meaningful order; the others store elements in a meaningless
|
||||
(and probably time-varying) order. By implication, only
|
||||
@ -336,7 +364,7 @@
|
||||
library iterators, for example) can ease generic manipulation of
|
||||
associative containers based on different underlying data
|
||||
structures.
|
||||
</p></div><div class="section" title="Iterators"><div class="titlepage"><div><div><h5 class="title"><a id="motivation.associative.iterators"/>Iterators</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Iterators"><div class="titlepage"><div><div><h5 class="title"><a name="motivation.associative.iterators"></a>Iterators</h5></div></div></div><p>
|
||||
Iterators are centric to the design of the standard library
|
||||
containers, because of the container/algorithm/iterator
|
||||
decomposition that allows an algorithm to operate on a range
|
||||
@ -361,7 +389,7 @@
|
||||
"ds_gen.html#find_range">Design::Associative
|
||||
Containers::Data-Structure Genericity::Point-Type and Range-Type
|
||||
Methods</span></em>.
|
||||
</p><div class="section" title="Using Point Iterators for Range Operations"><div class="titlepage"><div><div><h6 class="title"><a id="associative.iterators.using"/>Using Point Iterators for Range Operations</h6></div></div></div><p>
|
||||
</p><div class="section" title="Using Point Iterators for Range Operations"><div class="titlepage"><div><div><h6 class="title"><a name="associative.iterators.using"></a>Using Point Iterators for Range Operations</h6></div></div></div><p>
|
||||
Suppose <code class="classname">cntnr</code> is some associative
|
||||
container, and say <code class="varname">c</code> is an object of
|
||||
type <code class="classname">cntnr</code>. Then what will be the outcome
|
||||
@ -378,7 +406,7 @@
|
||||
no guarantee that the elements traversed will coincide with the
|
||||
<span class="emphasis"><em>logical</em></span> elements between 1 and 5, as in
|
||||
label B.
|
||||
</p><div class="figure"><a id="id527366"/><p class="title"><strong>Figure 22.3. Range Iteration in Different Data Structures</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_point_iterators_range_ops_1.png" style="text-align: middle" alt="Node Invariants"/></div></div></div><br class="figure-break"/><p>
|
||||
</p><div class="figure"><a name="id640685"></a><p class="title"><b>Figure 22.3. Range Iteration in Different Data Structures</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_point_iterators_range_ops_1.png" align="middle" alt="Node Invariants"></div></div></div><br class="figure-break"><p>
|
||||
In our opinion, this problem is not caused just because
|
||||
red-black trees are order preserving while
|
||||
collision-chaining hash tables are (generally) not - it
|
||||
@ -399,7 +427,7 @@
|
||||
Consequently, applying an algorithm to a sequence obtained from most
|
||||
containers may or may not make sense, but applying it to a
|
||||
sub-sequence of a self-organizing container does not.
|
||||
</p></div><div class="section" title="Cost to Point Iterators to Enable Range Operations"><div class="titlepage"><div><div><h6 class="title"><a id="associative.iterators.cost"/>Cost to Point Iterators to Enable Range Operations</h6></div></div></div><p>
|
||||
</p></div><div class="section" title="Cost to Point Iterators to Enable Range Operations"><div class="titlepage"><div><div><h6 class="title"><a name="associative.iterators.cost"></a>Cost to Point Iterators to Enable Range Operations</h6></div></div></div><p>
|
||||
Suppose <code class="varname">c</code> is some collision-chaining
|
||||
hash-based container object, and one calls
|
||||
</p><pre class="programlisting">c.find(3)</pre><p>
|
||||
@ -429,11 +457,11 @@
|
||||
list, as in the graphic below, label B. Here the iterators are as
|
||||
light as can be, but the hash-table's operations are more
|
||||
complicated.
|
||||
</p><div class="figure"><a id="id527491"/><p class="title"><strong>Figure 22.4. Point Iteration in Hash Data Structures</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_point_iterators_range_ops_2.png" style="text-align: middle" alt="Point Iteration in Hash Data Structures"/></div></div></div><br class="figure-break"/><p>
|
||||
</p><div class="figure"><a name="id640809"></a><p class="title"><b>Figure 22.4. Point Iteration in Hash Data Structures</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_point_iterators_range_ops_2.png" align="middle" alt="Point Iteration in Hash Data Structures"></div></div></div><br class="figure-break"><p>
|
||||
It should be noted that containers based on collision-chaining
|
||||
hash-tables are not the only ones with this type of behavior;
|
||||
many other self-organizing data structures display it as well.
|
||||
</p></div><div class="section" title="Invalidation Guarantees"><div class="titlepage"><div><div><h6 class="title"><a id="associative.iterators.invalidation"/>Invalidation Guarantees</h6></div></div></div><p>Consider the following snippet:</p><pre class="programlisting">
|
||||
</p></div><div class="section" title="Invalidation Guarantees"><div class="titlepage"><div><div><h6 class="title"><a name="associative.iterators.invalidation"></a>Invalidation Guarantees</h6></div></div></div><p>Consider the following snippet:</p><pre class="programlisting">
|
||||
it = c.find(3);
|
||||
c.erase(5);
|
||||
</pre><p>
|
||||
@ -445,7 +473,7 @@
|
||||
container. The graphic below shows three cases: A1 and A2 show
|
||||
a red-black tree; B1 and B2 show a probing hash-table; C1 and C2
|
||||
show a collision-chaining hash table.
|
||||
</p><div class="figure"><a id="id527568"/><p class="title"><strong>Figure 22.5. Effect of erase in different underlying data structures</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_invalidation_guarantee_erase.png" style="text-align: middle" alt="Effect of erase in different underlying data structures"/></div></div></div><br class="figure-break"/><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="figure"><a name="id640886"></a><p class="title"><b>Figure 22.5. Effect of erase in different underlying data structures</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_invalidation_guarantee_erase.png" align="middle" alt="Effect of erase in different underlying data structures"></div></div></div><br class="figure-break"><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Erasing 5 from A1 yields A2. Clearly, an iterator to 3 can
|
||||
be de-referenced and incremented. The sequence of iterators
|
||||
changed, but in a way that is well-defined by the interface.
|
||||
@ -467,7 +495,7 @@
|
||||
to express whether <code class="varname">it</code> is valid or not. This
|
||||
is true also for <code class="function">insert</code>. Again, the
|
||||
iterator concept seems overloaded.
|
||||
</p></div></div><div class="section" title="Functional"><div class="titlepage"><div><div><h5 class="title"><a id="motivation.associative.functions"/>Functional</h5></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Functional"><div class="titlepage"><div><div><h5 class="title"><a name="motivation.associative.functions"></a>Functional</h5></div></div></div><p>
|
||||
</p><p>
|
||||
The design of the functional overlay to the underlying data
|
||||
structures differs slightly from some of the conventions used in
|
||||
@ -478,7 +506,7 @@
|
||||
rubric, the standard associative containers lack some useful
|
||||
methods, and provide other methods which would be better
|
||||
removed.
|
||||
</p><div class="section" title="erase"><div class="titlepage"><div><div><h6 class="title"><a id="motivation.associative.functions.erase"/><code class="function">erase</code></h6></div></div></div><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="section" title="erase"><div class="titlepage"><div><div><h6 class="title"><a name="motivation.associative.functions.erase"></a><code class="function">erase</code></h6></div></div></div><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Order-preserving standard associative containers provide the
|
||||
method
|
||||
</p><pre class="programlisting">
|
||||
@ -550,7 +578,7 @@
|
||||
is almost certain to do something
|
||||
different than erasing all elements whose keys are between 2
|
||||
and 5, and is likely to produce other undefined behavior.
|
||||
</p></li></ol></div></div><div class="section" title="split and join"><div class="titlepage"><div><div><h6 class="title"><a id="motivation.associative.functions.split"/>
|
||||
</p></li></ol></div></div><div class="section" title="split and join"><div class="titlepage"><div><div><h6 class="title"><a name="motivation.associative.functions.split"></a>
|
||||
<code class="function">split</code> and <code class="function">join</code>
|
||||
</h6></div></div></div><p>
|
||||
It is well-known that tree-based and trie-based container
|
||||
@ -561,7 +589,7 @@
|
||||
choices for tree-based container methods, especially, since as
|
||||
noted just before, they are efficient replacements for erasing
|
||||
sub-sequences.
|
||||
</p></div><div class="section" title="insert"><div class="titlepage"><div><div><h6 class="title"><a id="motivation.associative.functions.insert"/>
|
||||
</p></div><div class="section" title="insert"><div class="titlepage"><div><div><h6 class="title"><a name="motivation.associative.functions.insert"></a>
|
||||
<code class="function">insert</code>
|
||||
</h6></div></div></div><p>
|
||||
The standard associative containers provide methods of the form
|
||||
@ -577,7 +605,7 @@
|
||||
similar to constructors taking a range given by a pair of
|
||||
iterators; the constructors, however, are transactional, whereas
|
||||
the insert methods are not; this is possibly confusing.
|
||||
</p></div><div class="section" title="operator== and operator<="><div class="titlepage"><div><div><h6 class="title"><a id="motivation.associative.functions.compare"/>
|
||||
</p></div><div class="section" title="operator== and operator<="><div class="titlepage"><div><div><h6 class="title"><a name="motivation.associative.functions.compare"></a>
|
||||
<code class="function">operator==</code> and <code class="function">operator<=</code>
|
||||
</h6></div></div></div><p>
|
||||
Associative containers are parametrized by policies allowing to
|
||||
@ -597,7 +625,7 @@
|
||||
equivalence; also, are two containers considered equivalent if
|
||||
they store the same values in different order? this is an
|
||||
arbitrary decision.
|
||||
</p></div></div></div><div class="section" title="Priority Queues"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.intro.motivation.priority_queue"/>Priority Queues</h4></div></div></div><div class="section" title="Policy Choices"><div class="titlepage"><div><div><h5 class="title"><a id="motivation.priority_queue.policy"/>Policy Choices</h5></div></div></div><p>
|
||||
</p></div></div></div><div class="section" title="Priority Queues"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.intro.motivation.priority_queue"></a>Priority Queues</h4></div></div></div><div class="section" title="Policy Choices"><div class="titlepage"><div><div><h5 class="title"><a name="motivation.priority_queue.policy"></a>Policy Choices</h5></div></div></div><p>
|
||||
Priority queues are containers that allow efficiently inserting
|
||||
values and accessing the maximal value (in the sense of the
|
||||
container's comparison functor). Their interface
|
||||
@ -606,7 +634,7 @@
|
||||
container <code class="classname">std::priorityqueue</code> indeed support
|
||||
these methods, but little else. For algorithmic and
|
||||
software-engineering purposes, other methods are needed:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Many graph algorithms (see
|
||||
<a class="xref" href="policy_data_structures.html#biblio.clrs2001" title="Introduction to Algorithms, 2nd edition">[biblio.clrs2001]</a>) require increasing a
|
||||
value in a priority queue (again, in the sense of the
|
||||
@ -653,7 +681,7 @@
|
||||
ask why do priority queues need to support iterators, since
|
||||
they are self-organizing containers with a different purpose
|
||||
than abstracting sequences. There are several reasons:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p>
|
||||
Iterators (even in self-organizing containers) are
|
||||
useful for many purposes: cross-referencing
|
||||
containers, serialization, and debugging code that uses
|
||||
@ -674,14 +702,14 @@
|
||||
comparing the iterator returned by <code class="function">find</code> to the
|
||||
iterator returned by <code class="function">end</code>, and not by comparing a
|
||||
pointer returned by <code class="function">find</code> to <span class="type">NULL</span>.
|
||||
</p></li></ol></div></li></ol></div></div><div class="section" title="Underlying Data Structures"><div class="titlepage"><div><div><h5 class="title"><a id="motivation.priority_queue.underlying"/>Underlying Data Structures</h5></div></div></div><p>
|
||||
</p></li></ol></div></li></ol></div></div><div class="section" title="Underlying Data Structures"><div class="titlepage"><div><div><h5 class="title"><a name="motivation.priority_queue.underlying"></a>Underlying Data Structures</h5></div></div></div><p>
|
||||
There are three main implementations of priority queues: the
|
||||
first employs a binary heap, typically one which uses a
|
||||
sequence; the second uses a tree (or forest of trees), which is
|
||||
typically less structured than an associative container's tree;
|
||||
the third simply uses an associative container. These are
|
||||
shown in the figure below with labels A1 and A2, B, and C.
|
||||
</p><div class="figure"><a id="id528131"/><p class="title"><strong>Figure 22.6. Underlying Priority Queue Data Structures</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_different_underlying_dss_2.png" style="text-align: middle" alt="Underlying Priority Queue Data Structures"/></div></div></div><br class="figure-break"/><p>
|
||||
</p><div class="figure"><a name="id641449"></a><p class="title"><b>Figure 22.6. Underlying Priority Queue Data Structures</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_different_underlying_dss_2.png" align="middle" alt="Underlying Priority Queue Data Structures"></div></div></div><br class="figure-break"><p>
|
||||
No single implementation can completely replace any of the
|
||||
others. Some have better <code class="function">push</code>
|
||||
and <code class="function">pop</code> amortized performance, some have
|
||||
@ -696,7 +724,7 @@
|
||||
important for priority queues, since the invalidation guarantees
|
||||
of one of the most useful data structures - binary heaps - is
|
||||
markedly different than those of most of the others.
|
||||
</p></div><div class="section" title="Binary Heaps"><div class="titlepage"><div><div><h5 class="title"><a id="motivation.priority_queue.binary_heap"/>Binary Heaps</h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Binary Heaps"><div class="titlepage"><div><div><h5 class="title"><a name="motivation.priority_queue.binary_heap"></a>Binary Heaps</h5></div></div></div><p>
|
||||
Binary heaps are one of the most useful underlying
|
||||
data structures for priority queues. They are very efficient in
|
||||
terms of memory (since they don't require per-value structure
|
||||
@ -716,7 +744,7 @@
|
||||
several reasons why a binary-heap priority queue
|
||||
may be better implemented as a container instead of a
|
||||
sequence adapter:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
<code class="classname">std::priority_queue</code> cannot erase values
|
||||
from its adapted sequence (irrespective of the sequence
|
||||
type). This means that the memory use of
|
||||
@ -743,7 +771,7 @@
|
||||
</p></li><li class="listitem"><p>
|
||||
There does not seem to be a systematic way to determine
|
||||
what exactly can be done with the priority queue.
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p>
|
||||
If <code class="classname">p</code> is a priority queue adapting an
|
||||
<code class="classname">std::vector</code>, then it is possible to iterate over
|
||||
all values by using <code class="function">&p.top()</code> and
|
||||
@ -773,21 +801,21 @@
|
||||
<code class="classname">std::priority_queue</code>, however, this will generally
|
||||
change the order of growth of the entire sequence of
|
||||
operations.
|
||||
</p></li></ol></div></div></div></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h2 class="title"><a id="pbds.biblio"/>
|
||||
</p></li></ol></div></div></div></div></div><div class="bibliography" title="Bibliography"><div class="titlepage"><div><div><h2 class="title"><a name="pbds.biblio"></a>
|
||||
Bibliography
|
||||
</h2></div></div></div><div class="biblioentry" title="STL Exception Handling Contract"><a id="biblio.abrahams97exception"/><p>[biblio.abrahams97exception] <span class="title"><em>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/1997/N1075.pdf">
|
||||
</h2></div></div></div><div class="biblioentry" title="STL Exception Handling Contract"><a name="biblio.abrahams97exception"></a><p>[biblio.abrahams97exception] <span class="title"><i>
|
||||
<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/1997/N1075.pdf" target="_top">
|
||||
STL Exception Handling Contract
|
||||
</a>
|
||||
</em>. </span><span class="date">1997. </span><span class="author"><span class="firstname">
|
||||
</i>. </span><span class="date">1997. </span><span class="author"><span class="firstname">
|
||||
Dave
|
||||
</span> <span class="surname">
|
||||
Abrahams
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
ISO SC22/WG21
|
||||
. </span></span></p></div><div class="biblioentry" title="Modern C++ Design: Generic Programming and Design Patterns Applied"><a id="biblio.alexandrescu01modern"/><p>[biblio.alexandrescu01modern] <span class="title"><em>
|
||||
. </span></span></p></div><div class="biblioentry" title="Modern C++ Design: Generic Programming and Design Patterns Applied"><a name="biblio.alexandrescu01modern"></a><p>[biblio.alexandrescu01modern] <span class="title"><i>
|
||||
Modern C++ Design: Generic Programming and Design Patterns Applied
|
||||
</em>. </span><span class="date">
|
||||
</i>. </span><span class="date">
|
||||
2001
|
||||
. </span><span class="author"><span class="firstname">
|
||||
Andrei
|
||||
@ -795,10 +823,10 @@
|
||||
Alexandrescu
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
Addison-Wesley Publishing Company
|
||||
. </span></span></p></div><div class="biblioentry" title="MTF, Bit, and COMB: A Guide to Deterministic and Randomized Algorithms for the List Update Problem"><a id="biblio.andrew04mtf"/><p>[biblio.andrew04mtf] <span class="title"><em>
|
||||
. </span></span></p></div><div class="biblioentry" title="MTF, Bit, and COMB: A Guide to Deterministic and Randomized Algorithms for the List Update Problem"><a name="biblio.andrew04mtf"></a><p>[biblio.andrew04mtf] <span class="title"><i>
|
||||
MTF, Bit, and COMB: A Guide to Deterministic and Randomized
|
||||
Algorithms for the List Update Problem
|
||||
</em>. </span><span class="authorgroup"><span class="firstname">
|
||||
</i>. </span><span class="authorgroup"><span class="firstname">
|
||||
K.
|
||||
</span> <span class="surname">
|
||||
Andrew
|
||||
@ -806,9 +834,9 @@
|
||||
D.
|
||||
</span> <span class="surname">
|
||||
Gleich
|
||||
</span>. </span></p></div><div class="biblioentry" title="Why You Shouldn't Use set - and What You Should Use Instead"><a id="biblio.austern00noset"/><p>[biblio.austern00noset] <span class="title"><em>
|
||||
</span>. </span></p></div><div class="biblioentry" title="Why You Shouldn't Use set - and What You Should Use Instead"><a name="biblio.austern00noset"></a><p>[biblio.austern00noset] <span class="title"><i>
|
||||
Why You Shouldn't Use set - and What You Should Use Instead
|
||||
</em>. </span><span class="date">
|
||||
</i>. </span><span class="date">
|
||||
April, 2000
|
||||
. </span><span class="author"><span class="firstname">
|
||||
Matthew
|
||||
@ -816,11 +844,11 @@
|
||||
Austern
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
C++ Report
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. </span></span></p></div><div class="biblioentry" title="A Proposal to Add Hashtables to the Standard Library"><a id="biblio.austern01htprop"/><p>[biblio.austern01htprop] <span class="title"><em>
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<a class="link" href="http://www.open-std.org/JTC1/sc22/wg21/docs/papers/2001/n1326.html">
|
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. </span></span></p></div><div class="biblioentry" title="A Proposal to Add Hashtables to the Standard Library"><a name="biblio.austern01htprop"></a><p>[biblio.austern01htprop] <span class="title"><i>
|
||||
<a class="link" href="http://www.open-std.org/JTC1/sc22/wg21/docs/papers/2001/n1326.html" target="_top">
|
||||
A Proposal to Add Hashtables to the Standard Library
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</a>
|
||||
</em>. </span><span class="date">
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</i>. </span><span class="date">
|
||||
2001
|
||||
. </span><span class="author"><span class="firstname">
|
||||
Matthew
|
||||
@ -828,9 +856,9 @@
|
||||
Austern
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
ISO SC22/WG21
|
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. </span></span></p></div><div class="biblioentry" title="Segmented iterators and hierarchical algorithms"><a id="biblio.austern98segmentedit"/><p>[biblio.austern98segmentedit] <span class="title"><em>
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. </span></span></p></div><div class="biblioentry" title="Segmented iterators and hierarchical algorithms"><a name="biblio.austern98segmentedit"></a><p>[biblio.austern98segmentedit] <span class="title"><i>
|
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Segmented iterators and hierarchical algorithms
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</em>. </span><span class="date">
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</i>. </span><span class="date">
|
||||
April, 1998
|
||||
. </span><span class="author"><span class="firstname">
|
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Matthew
|
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@ -838,31 +866,31 @@
|
||||
Austern
|
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</span>. </span><span class="publisher"><span class="publishername">
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||||
Generic Programming
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. </span></span></p></div><div class="biblioentry" title="Boost Timer Library"><a id="biblio.dawestimer"/><p>[biblio.dawestimer] <span class="title"><em>
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<a class="link" href="www.boost.org/doc/libs/release/libs/timer/">
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. </span></span></p></div><div class="biblioentry" title="Boost Timer Library"><a name="biblio.dawestimer"></a><p>[biblio.dawestimer] <span class="title"><i>
|
||||
<a class="link" href="www.boost.org/doc/libs/release/libs/timer/" target="_top">
|
||||
Boost Timer Library
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">
|
||||
</i>. </span><span class="author"><span class="firstname">
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||||
Beeman
|
||||
</span> <span class="surname">
|
||||
Dawes
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
Boost
|
||||
. </span></span></p></div><div class="biblioentry" title="Boost Pool Library"><a id="biblio.clearypool"/><p>[biblio.clearypool] <span class="title"><em>
|
||||
<a class="link" href="www.boost.org/doc/libs/release/libs/pool/">
|
||||
. </span></span></p></div><div class="biblioentry" title="Boost Pool Library"><a name="biblio.clearypool"></a><p>[biblio.clearypool] <span class="title"><i>
|
||||
<a class="link" href="www.boost.org/doc/libs/release/libs/pool/" target="_top">
|
||||
Boost Pool Library
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">
|
||||
</i>. </span><span class="author"><span class="firstname">
|
||||
Stephen
|
||||
</span> <span class="surname">
|
||||
Cleary
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
Boost
|
||||
. </span></span></p></div><div class="biblioentry" title="Boost Type Traits Library"><a id="biblio.maddocktraits"/><p>[biblio.maddocktraits] <span class="title"><em>
|
||||
<a class="link" href="www.boost.org/doc/libs/release/libs/type_traits/">
|
||||
. </span></span></p></div><div class="biblioentry" title="Boost Type Traits Library"><a name="biblio.maddocktraits"></a><p>[biblio.maddocktraits] <span class="title"><i>
|
||||
<a class="link" href="www.boost.org/doc/libs/release/libs/type_traits/" target="_top">
|
||||
Boost Type Traits Library
|
||||
</a>
|
||||
</em>. </span><span class="authorgroup"><span class="firstname">
|
||||
</i>. </span><span class="authorgroup"><span class="firstname">
|
||||
Maddock
|
||||
</span> <span class="surname">
|
||||
John
|
||||
@ -872,17 +900,17 @@
|
||||
Cleary
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
Boost
|
||||
. </span></span></p></div><div class="biblioentry" title="Worst-case efficient priority queues"><a id="biblio.brodal96priority"/><p>[biblio.brodal96priority] <span class="title"><em>
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<a class="link" href="http://portal.acm.org/citation.cfm?id=313883">
|
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. </span></span></p></div><div class="biblioentry" title="Worst-case efficient priority queues"><a name="biblio.brodal96priority"></a><p>[biblio.brodal96priority] <span class="title"><i>
|
||||
<a class="link" href="http://portal.acm.org/citation.cfm?id=313883" target="_top">
|
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Worst-case efficient priority queues
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">
|
||||
</i>. </span><span class="author"><span class="firstname">
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Gerth
|
||||
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Stolting Brodal
|
||||
</span>. </span></p></div><div class="biblioentry" title="Efficient C++ Programming Techniques"><a id="biblio.bulkamayheweff"/><p>[biblio.bulkamayheweff] <span class="title"><em>
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</span>. </span></p></div><div class="biblioentry" title="Efficient C++ Programming Techniques"><a name="biblio.bulkamayheweff"></a><p>[biblio.bulkamayheweff] <span class="title"><i>
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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1997
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D.
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Mayhew
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</span>. </span><span class="publisher"><span class="publishername">
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Addison-Wesley Publishing Company
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Introduction to Algorithms, 2nd edition
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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2001
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. </span><span class="authorgroup"><span class="firstname">
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T. H.
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@ -916,9 +944,9 @@
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Stein
|
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</span>. </span><span class="publisher"><span class="publishername">
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MIT Press
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Balls and bins: A study in negative dependence
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</em>. </span><span class="date">
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1998
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Random Structures and Algorithms 13
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Extendible hashing - a fast access method for dynamic files
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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1979
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R.
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@ -952,21 +980,21 @@
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</span>. </span><span class="publisher"><span class="publishername">
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<a class="link" href="http://cristal.inria.fr/~frisch/icfp06_contest/advtr/applyOmatic/ptset.ml">
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. </span></span></p></div><div class="biblioentry" title="Ptset: Sets of integers implemented as Patricia trees"><a name="biblio.filliatre2000ptset"></a><p>[biblio.filliatre2000ptset] <span class="title"><i>
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<a class="link" href="http://cristal.inria.fr/~frisch/icfp06_contest/advtr/applyOmatic/ptset.ml" target="_top">
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Ptset: Sets of integers implemented as Patricia trees
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</a>
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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2000
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Filliatre
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</span>. </span></p></div><div class="biblioentry" title="The pairing heap: a new form of self-adjusting heap"><a id="biblio.fredman86pairing"/><p>[biblio.fredman86pairing] <span class="title"><em>
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<a class="link" href="http://www.cs.cmu.edu/~sleator/papers/pairing-heaps.pdf">
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</span>. </span></p></div><div class="biblioentry" title="The pairing heap: a new form of self-adjusting heap"><a name="biblio.fredman86pairing"></a><p>[biblio.fredman86pairing] <span class="title"><i>
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<a class="link" href="http://www.cs.cmu.edu/~sleator/papers/pairing-heaps.pdf" target="_top">
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||||
The pairing heap: a new form of self-adjusting heap
|
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</a>
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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1986
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M. L.
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@ -984,9 +1012,9 @@
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R. E.
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Tarjan
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</span>. </span></p></div><div class="biblioentry" title="Design Patterns - Elements of Reusable Object-Oriented Software"><a id="biblio.gof"/><p>[biblio.gof] <span class="title"><em>
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Design Patterns - Elements of Reusable Object-Oriented Software
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</em>. </span><span class="date">
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@ -1006,9 +1034,9 @@
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Order-preserving key transformations
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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1986
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A. K.
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|
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Making a real hash of things
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<a class="link" href="http://www.cs.princeton.edu/research/techreps/TR-597-99">
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<a class="link" href="http://www.cs.princeton.edu/research/techreps/TR-597-99" target="_top">
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New Heap Data Structures
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Linear hashing: A new tool for file and table addressing
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|
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@ -1102,19 +1130,19 @@
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<a class="link" href="http://magic.aladdin.cs.cmu.edu/2005/08/01/deamortization-part-2-binomial-heaps">
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. </span></span></p></div><div class="biblioentry" title="Deamortization - Part 2: Binomial Heaps"><a name="biblio.maverik_lowerbounds"></a><p>[biblio.maverik_lowerbounds] <span class="title"><i>
|
||||
<a class="link" href="http://magic.aladdin.cs.cmu.edu/2005/08/01/deamortization-part-2-binomial-heaps" target="_top">
|
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Deamortization - Part 2: Binomial Heaps
|
||||
</a>
|
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</em>. </span><span class="date">
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|
||||
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|
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Maverik
|
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Woo
|
||||
</span>. </span></p></div><div class="biblioentry" title="More Effective C++: 35 New Ways to Improve Your Programs and Designs"><a id="biblio.meyers96more"/><p>[biblio.meyers96more] <span class="title"><em>
|
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</span>. </span></p></div><div class="biblioentry" title="More Effective C++: 35 New Ways to Improve Your Programs and Designs"><a name="biblio.meyers96more"></a><p>[biblio.meyers96more] <span class="title"><i>
|
||||
More Effective C++: 35 New Ways to Improve Your Programs and Designs
|
||||
</em>. </span><span class="date">
|
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</i>. </span><span class="date">
|
||||
1996
|
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. </span><span class="author"><span class="firstname">
|
||||
Scott
|
||||
@ -1122,9 +1150,9 @@
|
||||
Meyers
|
||||
</span>. </span><span class="publisher"><span class="publishername">
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Addison-Wesley Publishing Company
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. </span></span></p></div><div class="biblioentry" title="How Non-Member Functions Improve Encapsulation"><a name="biblio.meyers00nonmember"></a><p>[biblio.meyers00nonmember] <span class="title"><i>
|
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How Non-Member Functions Improve Encapsulation
|
||||
</em>. </span><span class="date">
|
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</i>. </span><span class="date">
|
||||
2000
|
||||
. </span><span class="author"><span class="firstname">
|
||||
Scott
|
||||
@ -1132,9 +1160,9 @@
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||||
Meyers
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
C/C++ Users Journal
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. </span></span></p></div><div class="biblioentry" title="Effective STL: 50 Specific Ways to Improve Your Use of the Standard Template Library"><a id="biblio.meyers01stl"/><p>[biblio.meyers01stl] <span class="title"><em>
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Effective STL: 50 Specific Ways to Improve Your Use of the Standard Template Library
|
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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||||
2001
|
||||
. </span><span class="author"><span class="firstname">
|
||||
Scott
|
||||
@ -1142,9 +1170,9 @@
|
||||
Meyers
|
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</span>. </span><span class="publisher"><span class="publishername">
|
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Addison-Wesley Publishing Company
|
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. </span></span></p></div><div class="biblioentry" title="Class Template, Member Template - or Both?"><a id="biblio.meyers02both"/><p>[biblio.meyers02both] <span class="title"><em>
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</em>. </span><span class="date">
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2003
|
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Scott
|
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@ -1152,9 +1180,9 @@
|
||||
Meyers
|
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</span>. </span><span class="publisher"><span class="publishername">
|
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C/C++ Users Journal
|
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. </span></span></p></div><div class="biblioentry" title="Randomized Algorithms"><a id="biblio.motwani95random"/><p>[biblio.motwani95random] <span class="title"><em>
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. </span></span></p></div><div class="biblioentry" title="Randomized Algorithms"><a name="biblio.motwani95random"></a><p>[biblio.motwani95random] <span class="title"><i>
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Randomized Algorithms
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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2003
|
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. </span><span class="authorgroup"><span class="firstname">
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R.
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@ -1166,23 +1194,23 @@
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Raghavan
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Cambridge University Press
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. </span></span></p></div><div class="biblioentry" title="COM: Component Model Object Technologies"><a id="biblio.mscom"/><p>[biblio.mscom] <span class="title"><em>
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<a class="link" href="http://www.microsoft.com/com">
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. </span></span></p></div><div class="biblioentry" title="COM: Component Model Object Technologies"><a name="biblio.mscom"></a><p>[biblio.mscom] <span class="title"><i>
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<a class="link" href="http://www.microsoft.com/com" target="_top">
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COM: Component Model Object Technologies
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</em>. </span><span class="publisher"><span class="publishername">
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</i>. </span><span class="publisher"><span class="publishername">
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Microsoft
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. </span></span></p></div><div class="biblioentry" title="Rationale for Adding Hash Tables to the C++ Standard Template Library"><a id="biblio.musser95rationale"/><p>[biblio.musser95rationale] <span class="title"><em>
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. </span></span></p></div><div class="biblioentry" title="Rationale for Adding Hash Tables to the C++ Standard Template Library"><a name="biblio.musser95rationale"></a><p>[biblio.musser95rationale] <span class="title"><i>
|
||||
Rationale for Adding Hash Tables to the C++ Standard Template Library
|
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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1995
|
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. </span><span class="author"><span class="firstname">
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David R.
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</span> <span class="surname">
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Musser
|
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</span>. </span></p></div><div class="biblioentry" title="STL Tutorial and Reference Guide"><a id="biblio.musser96stltutorial"/><p>[biblio.musser96stltutorial] <span class="title"><em>
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</span>. </span></p></div><div class="biblioentry" title="STL Tutorial and Reference Guide"><a name="biblio.musser96stltutorial"></a><p>[biblio.musser96stltutorial] <span class="title"><i>
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STL Tutorial and Reference Guide
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</em>. </span><span class="date">
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||||
</i>. </span><span class="date">
|
||||
1996
|
||||
. </span><span class="authorgroup"><span class="firstname">
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||||
David R.
|
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@ -1194,10 +1222,10 @@
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Saini
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</span>. </span><span class="publisher"><span class="publishername">
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Addison-Wesley Publishing Company
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. </span></span></p></div><div class="biblioentry" title="Priority Queues and the STL"><a id="biblio.nelson96stlpq"/><p>[biblio.nelson96stlpq] <span class="title"><em>
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<a class="link" href="http://www.dogma.net/markn/articles/pq_stl/priority.htm">Priority Queues and the STL
|
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. </span></span></p></div><div class="biblioentry" title="Priority Queues and the STL"><a name="biblio.nelson96stlpq"></a><p>[biblio.nelson96stlpq] <span class="title"><i>
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<a class="link" href="http://www.dogma.net/markn/articles/pq_stl/priority.htm" target="_top">Priority Queues and the STL
|
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</a>
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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January 1996
|
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. </span><span class="author"><span class="firstname">
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Mark
|
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@ -1205,9 +1233,9 @@
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Nelson
|
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</span>. </span><span class="publisher"><span class="publishername">
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Dr. Dobbs Journal
|
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. </span></span></p></div><div class="biblioentry" title="Fast mergeable integer maps"><a id="biblio.okasaki98mereable"/><p>[biblio.okasaki98mereable] <span class="title"><em>
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||||
. </span></span></p></div><div class="biblioentry" title="Fast mergeable integer maps"><a name="biblio.okasaki98mereable"></a><p>[biblio.okasaki98mereable] <span class="title"><i>
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Fast mergeable integer maps
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</em>. </span><span class="date">
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</i>. </span><span class="date">
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||||
September 1998
|
||||
. </span><span class="authorgroup"><span class="firstname">
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C.
|
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@ -1219,23 +1247,23 @@
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||||
Gill
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
In Workshop on ML
|
||||
. </span></span></p></div><div class="biblioentry" title="Standard Template Library Programmer's Guide"><a id="biblio.sgi_stl"/><p>[biblio.sgi_stl] <span class="title"><em>
|
||||
<a class="link" href="http://www.sgi.com/tech/stl">
|
||||
. </span></span></p></div><div class="biblioentry" title="Standard Template Library Programmer's Guide"><a name="biblio.sgi_stl"></a><p>[biblio.sgi_stl] <span class="title"><i>
|
||||
<a class="link" href="http://www.sgi.com/tech/stl" target="_top">
|
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Standard Template Library Programmer's Guide
|
||||
</a>
|
||||
</em>. </span><span class="author"><span class="firstname">
|
||||
</i>. </span><span class="author"><span class="firstname">
|
||||
Matt
|
||||
</span> <span class="surname">
|
||||
Austern
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
SGI
|
||||
. </span></span></p></div><div class="biblioentry" title="select"><a id="biblio.select_man"/><p>[biblio.select_man] <span class="title"><em>
|
||||
<a class="link" href="http://www.scit.wlv.ac.uk/cgi-bin/mansec?3C+select">
|
||||
. </span></span></p></div><div class="biblioentry" title="select"><a name="biblio.select_man"></a><p>[biblio.select_man] <span class="title"><i>
|
||||
<a class="link" href="http://www.scit.wlv.ac.uk/cgi-bin/mansec?3C+select" target="_top">
|
||||
select
|
||||
</a>
|
||||
</em>. </span></p></div><div class="biblioentry" title="Amortized Efficiency of List Update Problems"><a id="biblio.sleator84amortized"/><p>[biblio.sleator84amortized] <span class="title"><em>
|
||||
</i>. </span></p></div><div class="biblioentry" title="Amortized Efficiency of List Update Problems"><a name="biblio.sleator84amortized"></a><p>[biblio.sleator84amortized] <span class="title"><i>
|
||||
Amortized Efficiency of List Update Problems
|
||||
</em>. </span><span class="date">
|
||||
</i>. </span><span class="date">
|
||||
1984
|
||||
. </span><span class="authorgroup"><span class="firstname">
|
||||
D. D.
|
||||
@ -1247,9 +1275,9 @@
|
||||
Tarjan
|
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</span>. </span><span class="publisher"><span class="publishername">
|
||||
ACM Symposium on Theory of Computing
|
||||
. </span></span></p></div><div class="biblioentry" title="Self-Adjusting Binary Search Trees"><a id="biblio.sleator85self"/><p>[biblio.sleator85self] <span class="title"><em>
|
||||
. </span></span></p></div><div class="biblioentry" title="Self-Adjusting Binary Search Trees"><a name="biblio.sleator85self"></a><p>[biblio.sleator85self] <span class="title"><i>
|
||||
Self-Adjusting Binary Search Trees
|
||||
</em>. </span><span class="date">
|
||||
</i>. </span><span class="date">
|
||||
1985
|
||||
. </span><span class="authorgroup"><span class="firstname">
|
||||
D. D.
|
||||
@ -1261,9 +1289,9 @@
|
||||
Tarjan
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
ACM Symposium on Theory of Computing
|
||||
. </span></span></p></div><div class="biblioentry" title="The Standard Template Library"><a id="biblio.stepanov94standard"/><p>[biblio.stepanov94standard] <span class="title"><em>
|
||||
. </span></span></p></div><div class="biblioentry" title="The Standard Template Library"><a name="biblio.stepanov94standard"></a><p>[biblio.stepanov94standard] <span class="title"><i>
|
||||
The Standard Template Library
|
||||
</em>. </span><span class="date">
|
||||
</i>. </span><span class="date">
|
||||
1984
|
||||
. </span><span class="authorgroup"><span class="firstname">
|
||||
A. A.
|
||||
@ -1273,9 +1301,9 @@
|
||||
M.
|
||||
</span> <span class="surname">
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||||
Lee
|
||||
</span>. </span></p></div><div class="biblioentry" title="The C++ Programming Langugage"><a id="biblio.stroustrup97cpp"/><p>[biblio.stroustrup97cpp] <span class="title"><em>
|
||||
</span>. </span></p></div><div class="biblioentry" title="The C++ Programming Langugage"><a name="biblio.stroustrup97cpp"></a><p>[biblio.stroustrup97cpp] <span class="title"><i>
|
||||
The C++ Programming Langugage
|
||||
</em>. </span><span class="date">
|
||||
</i>. </span><span class="date">
|
||||
1997
|
||||
. </span><span class="author"><span class="firstname">
|
||||
Bjarne
|
||||
@ -1283,9 +1311,9 @@
|
||||
Stroustrup
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
Addison-Wesley Publishing Company
|
||||
. </span></span></p></div><div class="biblioentry" title="C++ Templates: The Complete Guide"><a id="biblio.vandevoorde2002cpptemplates"/><p>[biblio.vandevoorde2002cpptemplates] <span class="title"><em>
|
||||
. </span></span></p></div><div class="biblioentry" title="C++ Templates: The Complete Guide"><a name="biblio.vandevoorde2002cpptemplates"></a><p>[biblio.vandevoorde2002cpptemplates] <span class="title"><i>
|
||||
C++ Templates: The Complete Guide
|
||||
</em>. </span><span class="date">
|
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</i>. </span><span class="date">
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||||
2002
|
||||
. </span><span class="authorgroup"><span class="firstname">
|
||||
D.
|
||||
@ -1297,11 +1325,11 @@
|
||||
Josuttis
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
Addison-Wesley Publishing Company
|
||||
. </span></span></p></div><div class="biblioentry" title="Thirty Years Among the Dead"><a id="biblio.wickland96thirty"/><p>[biblio.wickland96thirty] <span class="title"><em>
|
||||
<a class="link" href="http://myweb.wvnet.edu/~gsa00121/books/amongdead30.zip">
|
||||
. </span></span></p></div><div class="biblioentry" title="Thirty Years Among the Dead"><a name="biblio.wickland96thirty"></a><p>[biblio.wickland96thirty] <span class="title"><i>
|
||||
<a class="link" href="http://myweb.wvnet.edu/~gsa00121/books/amongdead30.zip" target="_top">
|
||||
Thirty Years Among the Dead
|
||||
</a>
|
||||
</em>. </span><span class="date">
|
||||
</i>. </span><span class="date">
|
||||
1996
|
||||
. </span><span class="author"><span class="firstname">
|
||||
C. A.
|
||||
@ -1309,4 +1337,4 @@
|
||||
Wickland
|
||||
</span>. </span><span class="publisher"><span class="publishername">
|
||||
National Psychological Institute
|
||||
. </span></span></p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt03ch21s02.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="policy_data_structures_using.html">Next</a></td></tr><tr><td align="left" valign="top">Implementation </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Using</td></tr></table></div></body></html>
|
||||
. </span></span></p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch21s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="policy_data_structures_using.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Implementation </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Using</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,17 +1,45 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Acknowledgments</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" 	ISO C++ , 	policy , 	container , 	data , 	structure , 	associated , 	tree , 	trie , 	hash , 	metaprogramming "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"/><link rel="prev" href="policy_based_data_structures_test.html" title="Testing"/><link rel="next" href="ext_containers.html" title="Chapter 23. HP/SGI Extensions"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Acknowledgments</th></tr><tr><td align="left"><a accesskey="p" href="policy_based_data_structures_test.html">Prev</a> </td><th width="60%" align="center">Chapter 22. Policy-Based Data Structures</th><td align="right"> <a accesskey="n" href="ext_containers.html">Next</a></td></tr></table><hr/></div><div class="section" title="Acknowledgments"><div class="titlepage"><div><div><h2 class="title"><a id="pbds.ack"/>Acknowledgments</h2></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Acknowledgments</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
policy
|
||||
,
|
||||
container
|
||||
,
|
||||
data
|
||||
,
|
||||
structure
|
||||
,
|
||||
associated
|
||||
,
|
||||
tree
|
||||
,
|
||||
trie
|
||||
,
|
||||
hash
|
||||
,
|
||||
metaprogramming
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"><link rel="prev" href="policy_based_data_structures_test.html" title="Testing"><link rel="next" href="ext_containers.html" title="Chapter 23. HP/SGI Extensions"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Acknowledgments</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="policy_based_data_structures_test.html">Prev</a> </td><th width="60%" align="center">Chapter 22. Policy-Based Data Structures</th><td width="20%" align="right"> <a accesskey="n" href="ext_containers.html">Next</a></td></tr></table><hr></div><div class="section" title="Acknowledgments"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="pbds.ack"></a>Acknowledgments</h2></div></div></div><p>
|
||||
Written by Ami Tavory and Vladimir Dreizin (IBM Haifa Research
|
||||
Laboratories), and Benjamin Kosnik (Red Hat).
|
||||
</p><p>
|
||||
This library was partially written at
|
||||
<a class="link" href="http://www.haifa.il.ibm.com/">IBM's Haifa Research Labs</a>.
|
||||
<a class="link" href="http://www.haifa.il.ibm.com/" target="_top">IBM's Haifa Research Labs</a>.
|
||||
It is based heavily on policy-based design and uses many useful
|
||||
techniques from Modern C++ Design: Generic Programming and Design
|
||||
Patterns Applied by Andrei Alexandrescu.
|
||||
</p><p>
|
||||
Two ideas are borrowed from the SGI-STL implementation:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
The prime-based resize policies use a list of primes taken from
|
||||
the SGI-STL implementation.
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -20,10 +48,10 @@
|
||||
reverse iteration can be performed efficiently.
|
||||
</p></li></ol></div><p>
|
||||
Some test utilities borrow ideas from
|
||||
<a class="link" href="http://www.boost.org/doc/libs/release/libs/timer/index.html">boost::timer</a>.
|
||||
<a class="link" href="http://www.boost.org/doc/libs/release/libs/timer/index.html" target="_top">boost::timer</a>.
|
||||
</p><p>
|
||||
We would like to thank Scott Meyers for useful comments (without
|
||||
attributing to him any flaws in the design or implementation of the
|
||||
library).
|
||||
</p><p>We would like to thank Matt Austern for the suggestion to
|
||||
include tries.</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="policy_based_data_structures_test.html">Prev</a> </td><td align="center"><a accesskey="u" href="policy_data_structures.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_containers.html">Next</a></td></tr><tr><td align="left" valign="top">Testing </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 23. HP/SGI Extensions</td></tr></table></div></body></html>
|
||||
include tries.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="policy_based_data_structures_test.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="policy_data_structures.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ext_containers.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Testing </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 23. HP/SGI Extensions</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,34 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Design</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" 	ISO C++ , 	policy , 	container , 	data , 	structure , 	associated , 	tree , 	trie , 	hash , 	metaprogramming "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"/><link rel="prev" href="policy_data_structures_using.html" title="Using"/><link rel="next" href="policy_based_data_structures_test.html" title="Testing"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design</th></tr><tr><td align="left"><a accesskey="p" href="policy_data_structures_using.html">Prev</a> </td><th width="60%" align="center">Chapter 22. Policy-Based Data Structures</th><td align="right"> <a accesskey="n" href="policy_based_data_structures_test.html">Next</a></td></tr></table><hr/></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title"><a id="containers.pbds.design"/>Design</h2></div></div></div><p/><div class="section" title="Concepts"><div class="titlepage"><div><div><h3 class="title"><a id="pbds.design.concepts"/>Concepts</h3></div></div></div><div class="section" title="Null Policy Classes"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.concepts.null_type"/>Null Policy Classes</h4></div></div></div><p>
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Design</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
policy
|
||||
,
|
||||
container
|
||||
,
|
||||
data
|
||||
,
|
||||
structure
|
||||
,
|
||||
associated
|
||||
,
|
||||
tree
|
||||
,
|
||||
trie
|
||||
,
|
||||
hash
|
||||
,
|
||||
metaprogramming
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"><link rel="prev" href="policy_data_structures_using.html" title="Using"><link rel="next" href="policy_based_data_structures_test.html" title="Testing"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Design</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="policy_data_structures_using.html">Prev</a> </td><th width="60%" align="center">Chapter 22. Policy-Based Data Structures</th><td width="20%" align="right"> <a accesskey="n" href="policy_based_data_structures_test.html">Next</a></td></tr></table><hr></div><div class="section" title="Design"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="containers.pbds.design"></a>Design</h2></div></div></div><p></p><div class="section" title="Concepts"><div class="titlepage"><div><div><h3 class="title"><a name="pbds.design.concepts"></a>Concepts</h3></div></div></div><div class="section" title="Null Policy Classes"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.concepts.null_type"></a>Null Policy Classes</h4></div></div></div><p>
|
||||
Associative containers are typically parametrized by various
|
||||
policies. For example, a hash-based associative container is
|
||||
parametrized by a hash-functor, transforming each key into an
|
||||
@ -27,7 +55,7 @@
|
||||
places simplifications are made possible with this technique
|
||||
include node updates in tree and trie data structures, and hash
|
||||
and probe functions for hash data structures.
|
||||
</p></div><div class="section" title="Map and Set Semantics"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.concepts.associative_semantics"/>Map and Set Semantics</h4></div></div></div><div class="section" title="Distinguishing Between Maps and Sets"><div class="titlepage"><div><div><h5 class="title"><a id="concepts.associative_semantics.set_vs_map"/>
|
||||
</p></div><div class="section" title="Map and Set Semantics"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.concepts.associative_semantics"></a>Map and Set Semantics</h4></div></div></div><div class="section" title="Distinguishing Between Maps and Sets"><div class="titlepage"><div><div><h5 class="title"><a name="concepts.associative_semantics.set_vs_map"></a>
|
||||
Distinguishing Between Maps and Sets
|
||||
</h5></div></div></div><p>
|
||||
Anyone familiar with the standard knows that there are four kinds
|
||||
@ -93,7 +121,7 @@
|
||||
</p><p>
|
||||
When one uses a "multimap," one should choose with care the
|
||||
type of container used for secondary keys.
|
||||
</p></div><div class="section" title="Alternatives to std::multiset and std::multimap"><div class="titlepage"><div><div><h5 class="title"><a id="concepts.associative_semantics.multi"/>Alternatives to <code class="classname">std::multiset</code> and <code class="classname">std::multimap</code></h5></div></div></div><p>
|
||||
</p></div><div class="section" title="Alternatives to std::multiset and std::multimap"><div class="titlepage"><div><div><h5 class="title"><a name="concepts.associative_semantics.multi"></a>Alternatives to <code class="classname">std::multiset</code> and <code class="classname">std::multimap</code></h5></div></div></div><p>
|
||||
Brace onself: this library does not contain containers like
|
||||
<code class="classname">std::multimap</code> or
|
||||
<code class="classname">std::multiset</code>. Instead, these data
|
||||
@ -171,7 +199,7 @@
|
||||
naturally; collision-chaining hash tables (label B) store
|
||||
equivalent-key values in the same bucket, the bucket can be
|
||||
arranged so that equivalent-key values are consecutive.
|
||||
</p><div class="figure"><a id="id530275"/><p class="title"><strong>Figure 22.8. Non-unique Mapping Standard Containers</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_embedded_lists_1.png" style="text-align: middle" alt="Non-unique Mapping Standard Containers"/></div></div></div><br class="figure-break"/><p>
|
||||
</p><div class="figure"><a name="id643593"></a><p class="title"><b>Figure 22.8. Non-unique Mapping Standard Containers</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_embedded_lists_1.png" align="middle" alt="Non-unique Mapping Standard Containers"></div></div></div><br class="figure-break"><p>
|
||||
Put differently, the standards' non-unique mapping
|
||||
associative-containers are associative containers that map
|
||||
primary keys to linked lists that are embedded into the
|
||||
@ -179,12 +207,12 @@
|
||||
containers from the first graphic above, this time with
|
||||
the embedded linked lists of the grayed nodes marked
|
||||
explicitly.
|
||||
</p><div class="figure"><a id="fig.pbds_embedded_lists_2"/><p class="title"><strong>Figure 22.9.
|
||||
</p><div class="figure"><a name="fig.pbds_embedded_lists_2"></a><p class="title"><b>Figure 22.9.
|
||||
Effect of embedded lists in
|
||||
<code class="classname">std::multimap</code>
|
||||
</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_embedded_lists_2.png" style="text-align: middle" alt="Effect of embedded lists in std::multimap"/></div></div></div><br class="figure-break"/><p>
|
||||
</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_embedded_lists_2.png" align="middle" alt="Effect of embedded lists in std::multimap"></div></div></div><br class="figure-break"><p>
|
||||
These embedded linked lists have several disadvantages.
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
The underlying data structure embeds the linked lists
|
||||
according to its own consideration, which means that the
|
||||
search path for a value might include several different
|
||||
@ -215,7 +243,7 @@
|
||||
The above reasons hold even when the ratio of secondary keys to
|
||||
primary keys (or average number of identical keys) is small, but
|
||||
when it is large, there are more severe problems:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
The underlying data structures order the links inside each
|
||||
embedded linked-lists according to their internal
|
||||
considerations, which effectively means that each of the
|
||||
@ -253,7 +281,7 @@
|
||||
first graphic above. Labels A and B, respectively. Each shaded
|
||||
box represents some size-type or secondary
|
||||
associative-container.
|
||||
</p><div class="figure"><a id="id530470"/><p class="title"><strong>Figure 22.10. Non-unique Mapping Containers</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_embedded_lists_3.png" style="text-align: middle" alt="Non-unique Mapping Containers"/></div></div></div><br class="figure-break"/><p>
|
||||
</p><div class="figure"><a name="id643789"></a><p class="title"><b>Figure 22.10. Non-unique Mapping Containers</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_embedded_lists_3.png" align="middle" alt="Non-unique Mapping Containers"></div></div></div><br class="figure-break"><p>
|
||||
In the first example above, then, one would use an associative
|
||||
container mapping each user to an associative container which
|
||||
maps each application id to a start time (see
|
||||
@ -265,7 +293,7 @@
|
||||
</p><p>
|
||||
See the discussion in list-based container types for containers
|
||||
especially suited as secondary associative-containers.
|
||||
</p></div></div><div class="section" title="Iterator Semantics"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.concepts.iterator_semantics"/>Iterator Semantics</h4></div></div></div><div class="section" title="Point and Range Iterators"><div class="titlepage"><div><div><h5 class="title"><a id="concepts.iterator_semantics.point_and_range"/>Point and Range Iterators</h5></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Iterator Semantics"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.concepts.iterator_semantics"></a>Iterator Semantics</h4></div></div></div><div class="section" title="Point and Range Iterators"><div class="titlepage"><div><div><h5 class="title"><a name="concepts.iterator_semantics.point_and_range"></a>Point and Range Iterators</h5></div></div></div><p>
|
||||
Iterator concepts are bifurcated in this design, and are
|
||||
comprised of point-type and range-type iteration.
|
||||
</p><p>
|
||||
@ -286,7 +314,7 @@
|
||||
implementation, including that of C++ standard library
|
||||
components), but in this design, it is made explicit. They are
|
||||
distinct types.
|
||||
</p></div><div class="section" title="Distinguishing Point and Range Iterators"><div class="titlepage"><div><div><h5 class="title"><a id="concepts.iterator_semantics.both"/>Distinguishing Point and Range Iterators</h5></div></div></div><p>When using this library, is necessary to differentiate
|
||||
</p></div><div class="section" title="Distinguishing Point and Range Iterators"><div class="titlepage"><div><div><h5 class="title"><a name="concepts.iterator_semantics.both"></a>Distinguishing Point and Range Iterators</h5></div></div></div><p>When using this library, is necessary to differentiate
|
||||
between two types of methods and iterators: point-type methods and
|
||||
iterators, and range-type methods and iterators. Each associative
|
||||
container's interface includes the methods:</p><pre class="programlisting">
|
||||
@ -306,7 +334,7 @@
|
||||
shows invariants for order-preserving containers: point-type
|
||||
iterators are synonymous with range-type iterators.
|
||||
Orthogonally, <span class="emphasis"><em>C</em></span>shows invariants for "set"
|
||||
containers: iterators are synonymous with const iterators.</p><div class="figure"><a id="id530636"/><p class="title"><strong>Figure 22.11. Point Iterator Hierarchy</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_point_iterator_hierarchy.png" style="text-align: middle" alt="Point Iterator Hierarchy"/></div></div></div><br class="figure-break"/><p>Note that point-type iterators in self-organizing containers
|
||||
containers: iterators are synonymous with const iterators.</p><div class="figure"><a name="id643954"></a><p class="title"><b>Figure 22.11. Point Iterator Hierarchy</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_point_iterator_hierarchy.png" align="middle" alt="Point Iterator Hierarchy"></div></div></div><br class="figure-break"><p>Note that point-type iterators in self-organizing containers
|
||||
(hash-based associative containers) lack movement
|
||||
operators, such as <code class="literal">operator++</code> - in fact, this
|
||||
is the reason why this library differentiates from the standard C++ librarys
|
||||
@ -322,7 +350,7 @@
|
||||
a concept in C++ standardese, which is the category of iterators
|
||||
with no movement capabilities.) All other standard C++ library
|
||||
tags, such as <code class="literal">forward_iterator_tag</code> retain their
|
||||
common use.</p></div><div class="section" title="Invalidation Guarantees"><div class="titlepage"><div><div><h5 class="title"><a id="pbds.design.concepts.invalidation"/>Invalidation Guarantees</h5></div></div></div><p>
|
||||
common use.</p></div><div class="section" title="Invalidation Guarantees"><div class="titlepage"><div><div><h5 class="title"><a name="pbds.design.concepts.invalidation"></a>Invalidation Guarantees</h5></div></div></div><p>
|
||||
If one manipulates a container object, then iterators previously
|
||||
obtained from it can be invalidated. In some cases a
|
||||
previously-obtained iterator cannot be de-referenced; in other cases,
|
||||
@ -345,7 +373,7 @@
|
||||
to the question of whether point-type iterators and range-type
|
||||
iterators are valid. The graphic below shows tags corresponding to
|
||||
different types of invalidation guarantees.
|
||||
</p><div class="figure"><a id="id530747"/><p class="title"><strong>Figure 22.12. Invalidation Guarantee Tags Hierarchy</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_invalidation_tag_hierarchy.png" style="text-align: middle" alt="Invalidation Guarantee Tags Hierarchy"/></div></div></div><br class="figure-break"/><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="figure"><a name="id644065"></a><p class="title"><b>Figure 22.12. Invalidation Guarantee Tags Hierarchy</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_invalidation_tag_hierarchy.png" align="middle" alt="Invalidation Guarantee Tags Hierarchy"></div></div></div><br class="figure-break"><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<code class="classname">basic_invalidation_guarantee</code>
|
||||
corresponds to a basic guarantee that a point-type iterator,
|
||||
a found pointer, or a found reference, remains valid as long
|
||||
@ -376,7 +404,7 @@
|
||||
our opinion, an invalidation-guarantee hierarchy would solve
|
||||
these problems in all container types - not just associative
|
||||
containers.
|
||||
</p></div></div><div class="section" title="Genericity"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.concepts.genericity"/>Genericity</h4></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Genericity"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.concepts.genericity"></a>Genericity</h4></div></div></div><p>
|
||||
The design attempts to address the following problem of
|
||||
data-structure genericity. When writing a function manipulating
|
||||
a generic container object, what is the behavior of the object?
|
||||
@ -391,7 +419,7 @@
|
||||
</pre><p>
|
||||
then one needs to address the following questions in the body
|
||||
of <code class="function">some_op_sequence</code>:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Which types and methods does <code class="literal">Cntnr</code> support?
|
||||
Containers based on hash tables can be queries for the
|
||||
hash-functor type and object; this is meaningless for tree-based
|
||||
@ -418,7 +446,7 @@
|
||||
capabilities? What is the relationship between two different
|
||||
data structures, if anything?
|
||||
</p></li></ul></div><p>The remainder of this section explains these issues in
|
||||
detail.</p><div class="section" title="Tag"><div class="titlepage"><div><div><h5 class="title"><a id="concepts.genericity.tag"/>Tag</h5></div></div></div><p>
|
||||
detail.</p><div class="section" title="Tag"><div class="titlepage"><div><div><h5 class="title"><a name="concepts.genericity.tag"></a>Tag</h5></div></div></div><p>
|
||||
Tags are very useful for manipulating generic types. For example, if
|
||||
<code class="literal">It</code> is an iterator class, then <code class="literal">typename
|
||||
It::iterator_category</code> or <code class="literal">typename
|
||||
@ -429,11 +457,11 @@
|
||||
</p><p>
|
||||
This library contains a container tag hierarchy corresponding to the
|
||||
diagram below.
|
||||
</p><div class="figure"><a id="id530999"/><p class="title"><strong>Figure 22.13. Container Tag Hierarchy</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_container_tag_hierarchy.png" style="text-align: middle" alt="Container Tag Hierarchy"/></div></div></div><br class="figure-break"/><p>
|
||||
</p><div class="figure"><a name="id644317"></a><p class="title"><b>Figure 22.13. Container Tag Hierarchy</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_container_tag_hierarchy.png" align="middle" alt="Container Tag Hierarchy"></div></div></div><br class="figure-break"><p>
|
||||
Given any container <span class="type">Cntnr</span>, the tag of
|
||||
the underlying data structure can be found via <code class="literal">typename
|
||||
Cntnr::container_category</code>.
|
||||
</p></div><div class="section" title="Traits"><div class="titlepage"><div><div><h5 class="title"><a id="concepts.genericity.traits"/>Traits</h5></div></div></div><p/><p>Additionally, a traits mechanism can be used to query a
|
||||
</p></div><div class="section" title="Traits"><div class="titlepage"><div><div><h5 class="title"><a name="concepts.genericity.traits"></a>Traits</h5></div></div></div><p></p><p>Additionally, a traits mechanism can be used to query a
|
||||
container type for its attributes. Given any container
|
||||
<code class="literal">Cntnr</code>, then <code class="literal"><Cntnr></code>
|
||||
is a traits class identifying the properties of the
|
||||
@ -453,7 +481,7 @@
|
||||
otherwise <code class="classname">container_traits<Cntnr>::split_join_can_throw</code>
|
||||
will yield a compilation error. (This is somewhat similar to a
|
||||
compile-time version of the COM model).
|
||||
</p></div></div></div><div class="section" title="By Container"><div class="titlepage"><div><div><h3 class="title"><a id="pbds.design.container"/>By Container</h3></div></div></div><div class="section" title="hash"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.container.hash"/>hash</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a id="container.hash.interface"/>Interface</h5></div></div></div><p>
|
||||
</p></div></div></div><div class="section" title="By Container"><div class="titlepage"><div><div><h3 class="title"><a name="pbds.design.container"></a>By Container</h3></div></div></div><div class="section" title="hash"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.container.hash"></a>hash</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a name="container.hash.interface"></a>Interface</h5></div></div></div><p>
|
||||
The collision-chaining hash-based container has the
|
||||
following declaration.</p><pre class="programlisting">
|
||||
template<
|
||||
@ -466,7 +494,7 @@
|
||||
bool Store_Hash = false,
|
||||
typename Allocator = std::allocator<char> >
|
||||
class cc_hash_table;
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p><code class="classname">Key</code> is the key type.</p></li><li class="listitem"><p><code class="classname">Mapped</code> is the mapped-policy.</p></li><li class="listitem"><p><code class="classname">Hash_Fn</code> is a key hashing functor.</p></li><li class="listitem"><p><code class="classname">Eq_Fn</code> is a key equivalence functor.</p></li><li class="listitem"><p><code class="classname">Comb_Hash_Fn</code> is a range-hashing_functor;
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p><code class="classname">Key</code> is the key type.</p></li><li class="listitem"><p><code class="classname">Mapped</code> is the mapped-policy.</p></li><li class="listitem"><p><code class="classname">Hash_Fn</code> is a key hashing functor.</p></li><li class="listitem"><p><code class="classname">Eq_Fn</code> is a key equivalence functor.</p></li><li class="listitem"><p><code class="classname">Comb_Hash_Fn</code> is a range-hashing_functor;
|
||||
it describes how to translate hash values into positions
|
||||
within the table. </p></li><li class="listitem"><p><code class="classname">Resize_Policy</code> describes how a container object
|
||||
should change its internal size. </p></li><li class="listitem"><p><code class="classname">Store_Hash</code> indicates whether the hash value
|
||||
@ -485,11 +513,11 @@
|
||||
typename Allocator = std::allocator<char> >
|
||||
class gp_hash_table;
|
||||
</pre><p>The parameters are identical to those of the
|
||||
collision-chaining container, except for the following.</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p><code class="classname">Comb_Probe_Fn</code> describes how to transform a probe
|
||||
collision-chaining container, except for the following.</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p><code class="classname">Comb_Probe_Fn</code> describes how to transform a probe
|
||||
sequence into a sequence of positions within the table.</p></li><li class="listitem"><p><code class="classname">Probe_Fn</code> describes a probe sequence policy.</p></li></ol></div><p>Some of the default template values depend on the values of
|
||||
other parameters, and are explained below.</p></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a id="container.hash.details"/>Details</h5></div></div></div><div class="section" title="Hash Policies"><div class="titlepage"><div><div><h6 class="title"><a id="container.hash.details.hash_policies"/>Hash Policies</h6></div></div></div><div class="section" title="General"><div class="titlepage"><div><div><h6 class="title"><a id="details.hash_policies.general"/>General</h6></div></div></div><p>Following is an explanation of some functions which hashing
|
||||
involves. The graphic below illustrates the discussion.</p><div class="figure"><a id="id531332"/><p class="title"><strong>Figure 22.14. Hash functions, ranged-hash functions, and
|
||||
range-hashing functions</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_hash_ranged_hash_range_hashing_fns.png" style="text-align: middle" alt="Hash functions, ranged-hash functions, and range-hashing functions"/></div></div></div><br class="figure-break"/><p>Let U be a domain (e.g., the integers, or the
|
||||
other parameters, and are explained below.</p></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a name="container.hash.details"></a>Details</h5></div></div></div><div class="section" title="Hash Policies"><div class="titlepage"><div><div><h6 class="title"><a name="container.hash.details.hash_policies"></a>Hash Policies</h6></div></div></div><div class="section" title="General"><div class="titlepage"><div><div><h6 class="title"><a name="details.hash_policies.general"></a>General</h6></div></div></div><p>Following is an explanation of some functions which hashing
|
||||
involves. The graphic below illustrates the discussion.</p><div class="figure"><a name="id644650"></a><p class="title"><b>Figure 22.14. Hash functions, ranged-hash functions, and
|
||||
range-hashing functions</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_hash_ranged_hash_range_hashing_fns.png" align="middle" alt="Hash functions, ranged-hash functions, and range-hashing functions"></div></div></div><br class="figure-break"><p>Let U be a domain (e.g., the integers, or the
|
||||
strings of 3 characters). A hash-table algorithm needs to map
|
||||
elements of U "uniformly" into the range [0,..., m -
|
||||
1] (where m is a non-negative integral value, and
|
||||
@ -505,9 +533,9 @@
|
||||
Z<sub>+</sub>,</p><p>which maps a non-negative hash value, and a non-negative
|
||||
range upper-bound into a non-negative integral in the range
|
||||
between 0 (inclusive) and the range upper bound (exclusive),
|
||||
i.e., for any r in Z<sub>+</sub>,</p><p>0 ≤ g(r, m) ≤ m - 1</p><p>The resulting ranged-hash function, is</p><div class="equation"><a id="id531447"/><p class="title"><strong>Equation 22.1. Ranged Hash Function</strong></p><div class="equation-contents"><span class="mathphrase">
|
||||
i.e., for any r in Z<sub>+</sub>,</p><p>0 ≤ g(r, m) ≤ m - 1</p><p>The resulting ranged-hash function, is</p><div class="equation"><a name="id644765"></a><p class="title"><b>Equation 22.1. Ranged Hash Function</b></p><div class="equation-contents"><span class="mathphrase">
|
||||
f(u , m) = g(h(u), m)
|
||||
</span></div></div><br class="equation-break"/><p>From the above, it is obvious that given g and
|
||||
</span></div></div><br class="equation-break"><p>From the above, it is obvious that given g and
|
||||
h, f can always be composed (however the converse
|
||||
is not true). The standard's hash-based containers allow specifying
|
||||
a hash function, and use a hard-wired range-hashing function;
|
||||
@ -523,11 +551,11 @@
|
||||
probe function transforming the hash value into a
|
||||
sequence of hash values, and a range-hashing function
|
||||
transforming the sequence of hash values into a sequence of
|
||||
positions.</p></div><div class="section" title="Range Hashing"><div class="titlepage"><div><div><h6 class="title"><a id="details.hash_policies.range"/>Range Hashing</h6></div></div></div><p>Some common choices for range-hashing functions are the
|
||||
positions.</p></div><div class="section" title="Range Hashing"><div class="titlepage"><div><div><h6 class="title"><a name="details.hash_policies.range"></a>Range Hashing</h6></div></div></div><p>Some common choices for range-hashing functions are the
|
||||
division, multiplication, and middle-square methods (<a class="xref" href="policy_data_structures.html#biblio.knuth98sorting" title="The Art of Computer Programming - Sorting and Searching">[biblio.knuth98sorting]</a>), defined
|
||||
as</p><div class="equation"><a id="id531496"/><p class="title"><strong>Equation 22.2. Range-Hashing, Division Method</strong></p><div class="equation-contents"><span class="mathphrase">
|
||||
as</p><div class="equation"><a name="id644814"></a><p class="title"><b>Equation 22.2. Range-Hashing, Division Method</b></p><div class="equation-contents"><span class="mathphrase">
|
||||
g(r, m) = r mod m
|
||||
</span></div></div><br class="equation-break"/><p>g(r, m) = ⌈ u/v ( a r mod v ) ⌉</p><p>and</p><p>g(r, m) = ⌈ u/v ( r<sup>2</sup> mod v ) ⌉</p><p>respectively, for some positive integrals u and
|
||||
</span></div></div><br class="equation-break"><p>g(r, m) = ⌈ u/v ( a r mod v ) ⌉</p><p>and</p><p>g(r, m) = ⌈ u/v ( r<sup>2</sup> mod v ) ⌉</p><p>respectively, for some positive integrals u and
|
||||
v (typically powers of 2), and some a. Each of
|
||||
these range-hashing functions works best for some different
|
||||
setting.</p><p>The division method (see above) is a
|
||||
@ -536,12 +564,12 @@
|
||||
implement using the low
|
||||
level % (modulo) operation (for any m), or the
|
||||
low level & (bit-mask) operation (for the case where
|
||||
m is a power of 2), i.e.,</p><div class="equation"><a id="id531533"/><p class="title"><strong>Equation 22.3. Division via Prime Modulo</strong></p><div class="equation-contents"><span class="mathphrase">
|
||||
m is a power of 2), i.e.,</p><div class="equation"><a name="id644851"></a><p class="title"><b>Equation 22.3. Division via Prime Modulo</b></p><div class="equation-contents"><span class="mathphrase">
|
||||
g(r, m) = r % m
|
||||
</span></div></div><br class="equation-break"/><p>and</p><div class="equation"><a id="id531548"/><p class="title"><strong>Equation 22.4. Division via Bit Mask</strong></p><div class="equation-contents"><span class="mathphrase">
|
||||
</span></div></div><br class="equation-break"><p>and</p><div class="equation"><a name="id644867"></a><p class="title"><b>Equation 22.4. Division via Bit Mask</b></p><div class="equation-contents"><span class="mathphrase">
|
||||
g(r, m) = r & m - 1, (with m =
|
||||
2<sup>k</sup> for some k)
|
||||
</span></div></div><br class="equation-break"/><p>respectively.</p><p>The % (modulo) implementation has the advantage that for
|
||||
</span></div></div><br class="equation-break"><p>respectively.</p><p>The % (modulo) implementation has the advantage that for
|
||||
m a prime far from a power of 2, g(r, m) is
|
||||
affected by all the bits of r (minimizing the chance of
|
||||
collision). It has the disadvantage of using the costly modulo
|
||||
@ -550,7 +578,7 @@
|
||||
relying on the fast bit-wise and operation. It has the
|
||||
disadvantage that for g(r, m) is affected only by the
|
||||
low order bits of r. This method is hard-wired into
|
||||
Dinkumware's implementation.</p></div><div class="section" title="Ranged Hash"><div class="titlepage"><div><div><h6 class="title"><a id="details.hash_policies.ranged"/>Ranged Hash</h6></div></div></div><p>In cases it is beneficial to allow the
|
||||
Dinkumware's implementation.</p></div><div class="section" title="Ranged Hash"><div class="titlepage"><div><div><h6 class="title"><a name="details.hash_policies.ranged"></a>Ranged Hash</h6></div></div></div><p>In cases it is beneficial to allow the
|
||||
client to directly specify a ranged-hash hash function. It is
|
||||
true, that the writer of the ranged-hash function cannot rely
|
||||
on the values of m having specific numerical properties
|
||||
@ -564,24 +592,24 @@
|
||||
s = [ s<sub>0</sub>,..., s<sub>t - 1</sub>]
|
||||
</p><p>be a string of t characters, each of which is from
|
||||
domain S. Consider the following ranged-hash
|
||||
function:</p><div class="equation"><a id="id531629"/><p class="title"><strong>Equation 22.5.
|
||||
function:</p><div class="equation"><a name="id644947"></a><p class="title"><b>Equation 22.5.
|
||||
A Standard String Hash Function
|
||||
</strong></p><div class="equation-contents"><span class="mathphrase">
|
||||
</b></p><div class="equation-contents"><span class="mathphrase">
|
||||
f<sub>1</sub>(s, m) = ∑ <sub>i =
|
||||
0</sub><sup>t - 1</sup> s<sub>i</sub> a<sup>i</sup> mod m
|
||||
</span></div></div><br class="equation-break"/><p>where a is some non-negative integral value. This is
|
||||
</span></div></div><br class="equation-break"><p>where a is some non-negative integral value. This is
|
||||
the standard string-hashing function used in SGI's
|
||||
implementation (with a = 5). Its advantage is that
|
||||
it takes into account all of the characters of the string.</p><p>Now assume that s is the string representation of a
|
||||
of a long DNA sequence (and so S = {'A', 'C', 'G',
|
||||
'T'}). In this case, scanning the entire string might be
|
||||
prohibitively expensive. A possible alternative might be to use
|
||||
only the first k characters of the string, where</p><p>|S|<sup>k</sup> ≥ m ,</p><p>i.e., using the hash function</p><div class="equation"><a id="id531680"/><p class="title"><strong>Equation 22.6.
|
||||
only the first k characters of the string, where</p><p>|S|<sup>k</sup> ≥ m ,</p><p>i.e., using the hash function</p><div class="equation"><a name="id644998"></a><p class="title"><b>Equation 22.6.
|
||||
Only k String DNA Hash
|
||||
</strong></p><div class="equation-contents"><span class="mathphrase">
|
||||
</b></p><div class="equation-contents"><span class="mathphrase">
|
||||
f<sub>2</sub>(s, m) = ∑ <sub>i
|
||||
= 0</sub><sup>k - 1</sup> s<sub>i</sub> a<sup>i</sup> mod m
|
||||
</span></div></div><br class="equation-break"/><p>requiring scanning over only</p><p>k = log<sub>4</sub>( m )</p><p>characters.</p><p>Other more elaborate hash-functions might scan k
|
||||
</span></div></div><br class="equation-break"><p>requiring scanning over only</p><p>k = log<sub>4</sub>( m )</p><p>characters.</p><p>Other more elaborate hash-functions might scan k
|
||||
characters starting at a random position (determined at each
|
||||
resize), or scanning k random positions (determined at
|
||||
each resize), i.e., using</p><p>f<sub>3</sub>(s, m) = ∑ <sub>i =
|
||||
@ -590,12 +618,12 @@
|
||||
1</sup> s<sub>r</sub>i a<sup>r<sub>i</sub></sup> mod
|
||||
m ,</p><p>respectively, for r<sub>0</sub>,..., r<sub>k-1</sub>
|
||||
each in the (inclusive) range [0,...,t-1].</p><p>It should be noted that the above functions cannot be
|
||||
decomposed as per a ranged hash composed of hash and range hashing.</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h6 class="title"><a id="details.hash_policies.implementation"/>Implementation</h6></div></div></div><p>This sub-subsection describes the implementation of
|
||||
decomposed as per a ranged hash composed of hash and range hashing.</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h6 class="title"><a name="details.hash_policies.implementation"></a>Implementation</h6></div></div></div><p>This sub-subsection describes the implementation of
|
||||
the above in this library. It first explains range-hashing
|
||||
functions in collision-chaining tables, then ranged-hash
|
||||
functions in collision-chaining tables, then probing-based
|
||||
tables, and finally lists the relevant classes in this
|
||||
library.</p><div class="section" title="Range-Hashing and Ranged-Hashes in Collision-Chaining Tables"><div class="titlepage"><div><div><h6 class="title"><a id="hash_policies.implementation.collision-chaining"/>
|
||||
library.</p><div class="section" title="Range-Hashing and Ranged-Hashes in Collision-Chaining Tables"><div class="titlepage"><div><div><h6 class="title"><a name="hash_policies.implementation.collision-chaining"></a>
|
||||
Range-Hashing and Ranged-Hashes in Collision-Chaining Tables
|
||||
</h6></div></div></div><p><code class="classname">cc_hash_table</code> is
|
||||
parametrized by <code class="classname">Hash_Fn</code> and <code class="classname">Comb_Hash_Fn</code>, a
|
||||
@ -607,12 +635,12 @@
|
||||
the container transforms the key into a non-negative integral
|
||||
using the hash functor (points B and C), and transforms the
|
||||
result into a position using the combining functor (points D
|
||||
and E).</p><div class="figure"><a id="id531868"/><p class="title"><strong>Figure 22.15. Insert hash sequence diagram</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_hash_range_hashing_seq_diagram.png" style="text-align: middle" alt="Insert hash sequence diagram"/></div></div></div><br class="figure-break"/><p>If <code class="classname">cc_hash_table</code>'s
|
||||
and E).</p><div class="figure"><a name="id645187"></a><p class="title"><b>Figure 22.15. Insert hash sequence diagram</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_hash_range_hashing_seq_diagram.png" align="middle" alt="Insert hash sequence diagram"></div></div></div><br class="figure-break"><p>If <code class="classname">cc_hash_table</code>'s
|
||||
hash-functor, <code class="classname">Hash_Fn</code> is instantiated by <code class="classname">null_type</code> , then <code class="classname">Comb_Hash_Fn</code> is taken to be
|
||||
a ranged-hash function. The graphic below shows an <code class="function">insert</code> sequence
|
||||
diagram. The user inserts an element (point A), the container
|
||||
transforms the key into a position using the combining functor
|
||||
(points B and C).</p><div class="figure"><a id="id531927"/><p class="title"><strong>Figure 22.16. Insert hash sequence diagram with a null policy</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_hash_range_hashing_seq_diagram2.png" style="text-align: middle" alt="Insert hash sequence diagram with a null policy"/></div></div></div><br class="figure-break"/></div><div class="section" title="Probing tables"><div class="titlepage"><div><div><h6 class="title"><a id="hash_policies.implementation.probe"/>
|
||||
(points B and C).</p><div class="figure"><a name="id645245"></a><p class="title"><b>Figure 22.16. Insert hash sequence diagram with a null policy</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_hash_range_hashing_seq_diagram2.png" align="middle" alt="Insert hash sequence diagram with a null policy"></div></div></div><br class="figure-break"></div><div class="section" title="Probing tables"><div class="titlepage"><div><div><h6 class="title"><a name="hash_policies.implementation.probe"></a>
|
||||
Probing tables
|
||||
</h6></div></div></div><p><code class="classname">gp_hash_table</code> is parametrized by
|
||||
<code class="classname">Hash_Fn</code>, <code class="classname">Probe_Fn</code>,
|
||||
@ -624,10 +652,10 @@
|
||||
functor, <code class="classname">Probe_Fn</code> is a functor for offsets
|
||||
from a hash value, and <code class="classname">Comb_Probe_Fn</code>
|
||||
transforms a probe sequence into a sequence of positions within
|
||||
the table.</p></div><div class="section" title="Pre-Defined Policies"><div class="titlepage"><div><div><h6 class="title"><a id="hash_policies.implementation.predefined"/>
|
||||
the table.</p></div><div class="section" title="Pre-Defined Policies"><div class="titlepage"><div><div><h6 class="title"><a name="hash_policies.implementation.predefined"></a>
|
||||
Pre-Defined Policies
|
||||
</h6></div></div></div><p>This library contains some pre-defined classes
|
||||
implementing range-hashing and probing functions:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p><code class="classname">direct_mask_range_hashing</code>
|
||||
implementing range-hashing and probing functions:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p><code class="classname">direct_mask_range_hashing</code>
|
||||
and <code class="classname">direct_mod_range_hashing</code>
|
||||
are range-hashing functions based on a bit-mask and a modulo
|
||||
operation, respectively.</p></li><li class="listitem"><p><code class="classname">linear_probe_fn</code>, and
|
||||
@ -635,14 +663,14 @@
|
||||
a linear probe and a quadratic probe function,
|
||||
respectively.</p></li></ol></div><p>
|
||||
The graphic below shows the relationships.
|
||||
</p><div class="figure"><a id="id532067"/><p class="title"><strong>Figure 22.17. Hash policy class diagram</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_hash_policy_cd.png" style="text-align: middle" alt="Hash policy class diagram"/></div></div></div><br class="figure-break"/></div></div></div><div class="section" title="Resize Policies"><div class="titlepage"><div><div><h6 class="title"><a id="container.hash.details.resize_policies"/>Resize Policies</h6></div></div></div><div class="section" title="General"><div class="titlepage"><div><div><h6 class="title"><a id="resize_policies.general"/>General</h6></div></div></div><p>Hash-tables, as opposed to trees, do not naturally grow or
|
||||
</p><div class="figure"><a name="id645385"></a><p class="title"><b>Figure 22.17. Hash policy class diagram</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_hash_policy_cd.png" align="middle" alt="Hash policy class diagram"></div></div></div><br class="figure-break"></div></div></div><div class="section" title="Resize Policies"><div class="titlepage"><div><div><h6 class="title"><a name="container.hash.details.resize_policies"></a>Resize Policies</h6></div></div></div><div class="section" title="General"><div class="titlepage"><div><div><h6 class="title"><a name="resize_policies.general"></a>General</h6></div></div></div><p>Hash-tables, as opposed to trees, do not naturally grow or
|
||||
shrink. It is necessary to specify policies to determine how
|
||||
and when a hash table should change its size. Usually, resize
|
||||
policies can be decomposed into orthogonal policies:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>A size policy indicating how a hash table
|
||||
policies can be decomposed into orthogonal policies:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>A size policy indicating how a hash table
|
||||
should grow (e.g., it should multiply by powers of
|
||||
2).</p></li><li class="listitem"><p>A trigger policy indicating when a hash
|
||||
table should grow (e.g., a load factor is
|
||||
exceeded).</p></li></ol></div></div><div class="section" title="Size Policies"><div class="titlepage"><div><div><h6 class="title"><a id="resize_policies.size"/>Size Policies</h6></div></div></div><p>Size policies determine how a hash table changes size. These
|
||||
exceeded).</p></li></ol></div></div><div class="section" title="Size Policies"><div class="titlepage"><div><div><h6 class="title"><a name="resize_policies.size"></a>Size Policies</h6></div></div></div><p>Size policies determine how a hash table changes size. These
|
||||
policies are simple, and there are relatively few sensible
|
||||
options. An exponential-size policy (with the initial size and
|
||||
growth factors both powers of 2) works well with a mask-based
|
||||
@ -650,7 +678,7 @@
|
||||
hard-wired policy used by Dinkumware. A
|
||||
prime-list based policy works well with a modulo-prime range
|
||||
hashing function and is the hard-wired policy used by SGI's
|
||||
implementation.</p></div><div class="section" title="Trigger Policies"><div class="titlepage"><div><div><h6 class="title"><a id="resize_policies.trigger"/>Trigger Policies</h6></div></div></div><p>Trigger policies determine when a hash table changes size.
|
||||
implementation.</p></div><div class="section" title="Trigger Policies"><div class="titlepage"><div><div><h6 class="title"><a name="resize_policies.trigger"></a>Trigger Policies</h6></div></div></div><p>Trigger policies determine when a hash table changes size.
|
||||
Following is a description of two policies: load-check
|
||||
policies, and collision-check policies.</p><p>Load-check policies are straightforward. The user specifies
|
||||
two factors, Α<sub>min</sub> and
|
||||
@ -668,14 +696,14 @@
|
||||
and some load factor be denoted by Α. We would like to
|
||||
calculate the minimal length of k, such that if there were Α
|
||||
m elements in the hash table, a probe sequence of length k would
|
||||
be found with probability at most 1/m.</p><div class="figure"><a id="id532226"/><p class="title"><strong>Figure 22.18. Balls and bins</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_balls_and_bins.png" style="text-align: middle" alt="Balls and bins"/></div></div></div><br class="figure-break"/><p>Denote the probability that a probe sequence of length
|
||||
be found with probability at most 1/m.</p><div class="figure"><a name="id645544"></a><p class="title"><b>Figure 22.18. Balls and bins</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_balls_and_bins.png" align="middle" alt="Balls and bins"></div></div></div><br class="figure-break"><p>Denote the probability that a probe sequence of length
|
||||
k appears in bin i by p<sub>i</sub>, the
|
||||
length of the probe sequence of bin i by
|
||||
l<sub>i</sub>, and assume uniform distribution. Then</p><div class="equation"><a id="id532271"/><p class="title"><strong>Equation 22.7.
|
||||
l<sub>i</sub>, and assume uniform distribution. Then</p><div class="equation"><a name="id645590"></a><p class="title"><b>Equation 22.7.
|
||||
Probability of Probe Sequence of Length k
|
||||
</strong></p><div class="equation-contents"><span class="mathphrase">
|
||||
</b></p><div class="equation-contents"><span class="mathphrase">
|
||||
p<sub>1</sub> =
|
||||
</span></div></div><br class="equation-break"/><p>P(l<sub>1</sub> ≥ k) =</p><p>
|
||||
</span></div></div><br class="equation-break"><p>P(l<sub>1</sub> ≥ k) =</p><p>
|
||||
P(l<sub>1</sub> ≥ α ( 1 + k / α - 1) ≤ (a)
|
||||
</p><p>
|
||||
e ^ ( - ( α ( k / α - 1 )<sup>2</sup> ) /2)
|
||||
@ -685,11 +713,11 @@
|
||||
l<sub>i</sub> are negatively-dependent
|
||||
(<a class="xref" href="policy_data_structures.html#biblio.dubhashi98neg" title="Balls and bins: A study in negative dependence">[biblio.dubhashi98neg]</a>)
|
||||
. Let
|
||||
I(.) denote the indicator function. Then</p><div class="equation"><a id="id532328"/><p class="title"><strong>Equation 22.8.
|
||||
I(.) denote the indicator function. Then</p><div class="equation"><a name="id645646"></a><p class="title"><b>Equation 22.8.
|
||||
Probability Probe Sequence in Some Bin
|
||||
</strong></p><div class="equation-contents"><span class="mathphrase">
|
||||
</b></p><div class="equation-contents"><span class="mathphrase">
|
||||
P( exists<sub>i</sub> l<sub>i</sub> ≥ k ) =
|
||||
</span></div></div><br class="equation-break"/><p>P ( ∑ <sub>i = 1</sub><sup>m</sup>
|
||||
</span></div></div><br class="equation-break"><p>P ( ∑ <sub>i = 1</sub><sup>m</sup>
|
||||
I(l<sub>i</sub> ≥ k) ≥ 1 ) =</p><p>P ( ∑ <sub>i = 1</sub><sup>m</sup> I (
|
||||
l<sub>i</sub> ≥ k ) ≥ m p<sub>1</sub> ( 1 + 1 / (m
|
||||
p<sub>1</sub>) - 1 ) ) ≤ (a)</p><p>e ^ ( ( - m p<sub>1</sub> ( 1 / (m p<sub>1</sub>)
|
||||
@ -697,11 +725,11 @@
|
||||
be applied to negatively-dependent variables (<a class="xref" href="policy_data_structures.html#biblio.dubhashi98neg" title="Balls and bins: A study in negative dependence">[biblio.dubhashi98neg]</a>). Inserting the first probability
|
||||
equation into the second one, and equating with 1/m, we
|
||||
obtain</p><p>k ~ √ ( 2 α ln 2 m ln(m) )
|
||||
) .</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h6 class="title"><a id="resize_policies.impl"/>Implementation</h6></div></div></div><p>This sub-subsection describes the implementation of the
|
||||
) .</p></div><div class="section" title="Implementation"><div class="titlepage"><div><div><h6 class="title"><a name="resize_policies.impl"></a>Implementation</h6></div></div></div><p>This sub-subsection describes the implementation of the
|
||||
above in this library. It first describes resize policies and
|
||||
their decomposition into trigger and size policies, then
|
||||
describes pre-defined classes, and finally discusses controlled
|
||||
access the policies' internals.</p><div class="section" title="Decomposition"><div class="titlepage"><div><div><h6 class="title"><a id="resize_policies.impl.decomposition"/>Decomposition</h6></div></div></div><p>Each hash-based container is parametrized by a
|
||||
access the policies' internals.</p><div class="section" title="Decomposition"><div class="titlepage"><div><div><h6 class="title"><a name="resize_policies.impl.decomposition"></a>Decomposition</h6></div></div></div><p>Each hash-based container is parametrized by a
|
||||
<code class="classname">Resize_Policy</code> parameter; the container derives
|
||||
<code class="classname">public</code>ly from <code class="classname">Resize_Policy</code>. For
|
||||
example:</p><pre class="programlisting">
|
||||
@ -724,7 +752,7 @@
|
||||
a resize is needed, and if so, what is the new size (points D
|
||||
to G); following the resize, it notifies the policy that a
|
||||
resize has completed (point H); finally, the element is
|
||||
inserted, and the policy notified (point I).</p><div class="figure"><a id="id532482"/><p class="title"><strong>Figure 22.19. Insert resize sequence diagram</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_insert_resize_sequence_diagram1.png" style="text-align: middle" alt="Insert resize sequence diagram"/></div></div></div><br class="figure-break"/><p>In practice, a resize policy can be usually orthogonally
|
||||
inserted, and the policy notified (point I).</p><div class="figure"><a name="id645800"></a><p class="title"><b>Figure 22.19. Insert resize sequence diagram</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_insert_resize_sequence_diagram1.png" align="middle" alt="Insert resize sequence diagram"></div></div></div><br class="figure-break"><p>In practice, a resize policy can be usually orthogonally
|
||||
decomposed to a size policy and a trigger policy. Consequently,
|
||||
the library contains a single class for instantiating a resize
|
||||
policy: <code class="classname">hash_standard_resize_policy</code>
|
||||
@ -733,10 +761,10 @@
|
||||
both, and acts as a standard delegate (<a class="xref" href="policy_data_structures.html#biblio.gof" title="Design Patterns - Elements of Reusable Object-Oriented Software">[biblio.gof]</a>)
|
||||
to these policies.</p><p>The two graphics immediately below show sequence diagrams
|
||||
illustrating the interaction between the standard resize policy
|
||||
and its trigger and size policies, respectively.</p><div class="figure"><a id="id532547"/><p class="title"><strong>Figure 22.20. Standard resize policy trigger sequence
|
||||
diagram</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_insert_resize_sequence_diagram2.png" style="text-align: middle" alt="Standard resize policy trigger sequence diagram"/></div></div></div><br class="figure-break"/><div class="figure"><a id="id532582"/><p class="title"><strong>Figure 22.21. Standard resize policy size sequence
|
||||
diagram</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_insert_resize_sequence_diagram3.png" style="text-align: middle" alt="Standard resize policy size sequence diagram"/></div></div></div><br class="figure-break"/></div><div class="section" title="Predefined Policies"><div class="titlepage"><div><div><h6 class="title"><a id="resize_policies.impl.predefined"/>Predefined Policies</h6></div></div></div><p>The library includes the following
|
||||
instantiations of size and trigger policies:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p><code class="classname">hash_load_check_resize_trigger</code>
|
||||
and its trigger and size policies, respectively.</p><div class="figure"><a name="id645865"></a><p class="title"><b>Figure 22.20. Standard resize policy trigger sequence
|
||||
diagram</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_insert_resize_sequence_diagram2.png" align="middle" alt="Standard resize policy trigger sequence diagram"></div></div></div><br class="figure-break"><div class="figure"><a name="id645900"></a><p class="title"><b>Figure 22.21. Standard resize policy size sequence
|
||||
diagram</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_insert_resize_sequence_diagram3.png" align="middle" alt="Standard resize policy size sequence diagram"></div></div></div><br class="figure-break"></div><div class="section" title="Predefined Policies"><div class="titlepage"><div><div><h6 class="title"><a name="resize_policies.impl.predefined"></a>Predefined Policies</h6></div></div></div><p>The library includes the following
|
||||
instantiations of size and trigger policies:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p><code class="classname">hash_load_check_resize_trigger</code>
|
||||
implements a load check trigger policy.</p></li><li class="listitem"><p><code class="classname">cc_hash_max_collision_check_resize_trigger</code>
|
||||
implements a collision check trigger policy.</p></li><li class="listitem"><p><code class="classname">hash_exponential_size_policy</code>
|
||||
implements an exponential-size policy (which should be used
|
||||
@ -753,7 +781,7 @@
|
||||
instantiated by <code class="classname">hash_load_check_resize_trigger</code>,
|
||||
or <code class="classname">cc_hash_max_collision_check_resize_trigger</code>;
|
||||
<code class="classname">Size_Policy</code> is instantiated by <code class="classname">hash_exponential_size_policy</code>,
|
||||
or <code class="classname">hash_prime_size_policy</code>.</p></div><div class="section" title="Controling Access to Internals"><div class="titlepage"><div><div><h6 class="title"><a id="resize_policies.impl.internals"/>Controling Access to Internals</h6></div></div></div><p>There are cases where (controlled) access to resize
|
||||
or <code class="classname">hash_prime_size_policy</code>.</p></div><div class="section" title="Controling Access to Internals"><div class="titlepage"><div><div><h6 class="title"><a name="resize_policies.impl.internals"></a>Controling Access to Internals</h6></div></div></div><p>There are cases where (controlled) access to resize
|
||||
policies' internals is beneficial. E.g., it is sometimes
|
||||
useful to query a hash-table for the table's actual size (as
|
||||
opposed to its <code class="function">size()</code> - the number of values it
|
||||
@ -798,11 +826,11 @@
|
||||
</pre><p>which resizes the container. Implementations of
|
||||
<code class="classname">Resize_Policy</code> can export public methods for resizing
|
||||
the container externally; these methods internally call
|
||||
<code class="classname">do_resize</code> to resize the table.</p></div></div></div><div class="section" title="Policy Interactions"><div class="titlepage"><div><div><h6 class="title"><a id="container.hash.details.policy_interaction"/>Policy Interactions</h6></div></div></div><p>
|
||||
<code class="classname">do_resize</code> to resize the table.</p></div></div></div><div class="section" title="Policy Interactions"><div class="titlepage"><div><div><h6 class="title"><a name="container.hash.details.policy_interaction"></a>Policy Interactions</h6></div></div></div><p>
|
||||
</p><p>Hash-tables are unfortunately especially susceptible to
|
||||
choice of policies. One of the more complicated aspects of this
|
||||
is that poor combinations of good policies can form a poor
|
||||
container. Following are some considerations.</p><div class="section" title="probe/size/trigger"><div class="titlepage"><div><div><h6 class="title"><a id="policy_interaction.probesizetrigger"/>probe/size/trigger</h6></div></div></div><p>Some combinations do not work well for probing containers.
|
||||
container. Following are some considerations.</p><div class="section" title="probe/size/trigger"><div class="titlepage"><div><div><h6 class="title"><a name="policy_interaction.probesizetrigger"></a>probe/size/trigger</h6></div></div></div><p>Some combinations do not work well for probing containers.
|
||||
For example, combining a quadratic probe policy with an
|
||||
exponential size policy can yield a poor container: when an
|
||||
element is inserted, a trigger policy might decide that there
|
||||
@ -811,13 +839,13 @@
|
||||
the unused entries.</p><p>Unfortunately, this library cannot detect such problems at
|
||||
compilation (they are halting reducible). It therefore defines
|
||||
an exception class <code class="classname">insert_error</code> to throw an
|
||||
exception in this case.</p></div><div class="section" title="hash/trigger"><div class="titlepage"><div><div><h6 class="title"><a id="policy_interaction.hashtrigger"/>hash/trigger</h6></div></div></div><p>Some trigger policies are especially susceptible to poor
|
||||
exception in this case.</p></div><div class="section" title="hash/trigger"><div class="titlepage"><div><div><h6 class="title"><a name="policy_interaction.hashtrigger"></a>hash/trigger</h6></div></div></div><p>Some trigger policies are especially susceptible to poor
|
||||
hash functions. Suppose, as an extreme case, that the hash
|
||||
function transforms each key to the same hash value. After some
|
||||
inserts, a collision detecting policy will always indicate that
|
||||
the container needs to grow.</p><p>The library, therefore, by design, limits each operation to
|
||||
one resize. For each <code class="classname">insert</code>, for example, it queries
|
||||
only once whether a resize is needed.</p></div><div class="section" title="equivalence functors/storing hash values/hash"><div class="titlepage"><div><div><h6 class="title"><a id="policy_interaction.eqstorehash"/>equivalence functors/storing hash values/hash</h6></div></div></div><p><code class="classname">cc_hash_table</code> and
|
||||
only once whether a resize is needed.</p></div><div class="section" title="equivalence functors/storing hash values/hash"><div class="titlepage"><div><div><h6 class="title"><a name="policy_interaction.eqstorehash"></a>equivalence functors/storing hash values/hash</h6></div></div></div><p><code class="classname">cc_hash_table</code> and
|
||||
<code class="classname">gp_hash_table</code> are
|
||||
parametrized by an equivalence functor and by a
|
||||
<code class="classname">Store_Hash</code> parameter. If the latter parameter is
|
||||
@ -828,15 +856,15 @@
|
||||
collisions for other types.</p><p>If a ranged-hash function or ranged probe function is
|
||||
directly supplied, however, then it makes no sense to store the
|
||||
hash value with each entry. This library's container will
|
||||
fail at compilation, by design, if this is attempted.</p></div><div class="section" title="size/load-check trigger"><div class="titlepage"><div><div><h6 class="title"><a id="policy_interaction.sizeloadtrigger"/>size/load-check trigger</h6></div></div></div><p>Assume a size policy issues an increasing sequence of sizes
|
||||
fail at compilation, by design, if this is attempted.</p></div><div class="section" title="size/load-check trigger"><div class="titlepage"><div><div><h6 class="title"><a name="policy_interaction.sizeloadtrigger"></a>size/load-check trigger</h6></div></div></div><p>Assume a size policy issues an increasing sequence of sizes
|
||||
a, a q, a q<sup>1</sup>, a q<sup>2</sup>, ... For
|
||||
example, an exponential size policy might issue the sequence of
|
||||
sizes 8, 16, 32, 64, ...</p><p>If a load-check trigger policy is used, with loads
|
||||
α<sub>min</sub> and α<sub>max</sub>,
|
||||
respectively, then it is a good idea to have:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>α<sub>max</sub> ~ 1 / q</p></li><li class="listitem"><p>α<sub>min</sub> < 1 / (2 q)</p></li></ol></div><p>This will ensure that the amortized hash cost of each
|
||||
respectively, then it is a good idea to have:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>α<sub>max</sub> ~ 1 / q</p></li><li class="listitem"><p>α<sub>min</sub> < 1 / (2 q)</p></li></ol></div><p>This will ensure that the amortized hash cost of each
|
||||
modifying operation is at most approximately 3.</p><p>α<sub>min</sub> ~ α<sub>max</sub> is, in
|
||||
any case, a bad choice, and α<sub>min</sub> >
|
||||
α <sub>max</sub> is horrendous.</p></div></div></div></div><div class="section" title="tree"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.container.tree"/>tree</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a id="container.tree.interface"/>Interface</h5></div></div></div><p>The tree-based container has the following declaration:</p><pre class="programlisting">
|
||||
α <sub>max</sub> is horrendous.</p></div></div></div></div><div class="section" title="tree"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.container.tree"></a>tree</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a name="container.tree.interface"></a>Interface</h5></div></div></div><p>The tree-based container has the following declaration:</p><pre class="programlisting">
|
||||
template<
|
||||
typename Key,
|
||||
typename Mapped,
|
||||
@ -850,7 +878,7 @@
|
||||
class Node_Update = null_node_update,
|
||||
typename Allocator = std::allocator<char> >
|
||||
class tree;
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p><code class="classname">Key</code> is the key type.</p></li><li class="listitem"><p><code class="classname">Mapped</code> is the mapped-policy.</p></li><li class="listitem"><p><code class="classname">Cmp_Fn</code> is a key comparison functor</p></li><li class="listitem"><p><code class="classname">Tag</code> specifies which underlying data structure
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p><code class="classname">Key</code> is the key type.</p></li><li class="listitem"><p><code class="classname">Mapped</code> is the mapped-policy.</p></li><li class="listitem"><p><code class="classname">Cmp_Fn</code> is a key comparison functor</p></li><li class="listitem"><p><code class="classname">Tag</code> specifies which underlying data structure
|
||||
to use.</p></li><li class="listitem"><p><code class="classname">Node_Update</code> is a policy for updating node
|
||||
invariants.</p></li><li class="listitem"><p><code class="classname">Allocator</code> is an allocator
|
||||
type.</p></li></ol></div><p>The <code class="classname">Tag</code> parameter specifies which underlying
|
||||
@ -861,7 +889,7 @@
|
||||
Note that containers based on the former two contain more types
|
||||
and methods than the latter (e.g.,
|
||||
<code class="classname">reverse_iterator</code> and <code class="classname">rbegin</code>), and different
|
||||
exception and invalidation guarantees.</p></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a id="container.tree.details"/>Details</h5></div></div></div><div class="section" title="Node Invariants"><div class="titlepage"><div><div><h6 class="title"><a id="container.tree.node"/>Node Invariants</h6></div></div></div><p>Consider the two trees in the graphic below, labels A and B. The first
|
||||
exception and invalidation guarantees.</p></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a name="container.tree.details"></a>Details</h5></div></div></div><div class="section" title="Node Invariants"><div class="titlepage"><div><div><h6 class="title"><a name="container.tree.node"></a>Node Invariants</h6></div></div></div><p>Consider the two trees in the graphic below, labels A and B. The first
|
||||
is a tree of floats; the second is a tree of pairs, each
|
||||
signifying a geometric line interval. Each element in a tree is refered to as a node of the tree. Of course, each of
|
||||
these trees can support the usual queries: the first can easily
|
||||
@ -877,8 +905,8 @@
|
||||
each node, and maintains node invariants (see <a class="xref" href="policy_data_structures.html#biblio.clrs2001" title="Introduction to Algorithms, 2nd edition">[biblio.clrs2001]</a>.) The first stores in
|
||||
each node the size of the sub-tree rooted at the node; the
|
||||
second stores at each node the maximal endpoint of the
|
||||
intervals at the sub-tree rooted at the node.</p><div class="figure"><a id="id533231"/><p class="title"><strong>Figure 22.22. Tree node invariants</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_tree_node_invariants.png" style="text-align: middle" alt="Tree node invariants"/></div></div></div><br class="figure-break"/><p>Supporting such trees is difficult for a number of
|
||||
reasons:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>There must be a way to specify what a node's metadata
|
||||
intervals at the sub-tree rooted at the node.</p><div class="figure"><a name="id646549"></a><p class="title"><b>Figure 22.22. Tree node invariants</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_tree_node_invariants.png" align="middle" alt="Tree node invariants"></div></div></div><br class="figure-break"><p>Supporting such trees is difficult for a number of
|
||||
reasons:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>There must be a way to specify what a node's metadata
|
||||
should be (if any).</p></li><li class="listitem"><p>Various operations can invalidate node
|
||||
invariants. The graphic below shows how a right rotation,
|
||||
performed on A, results in B, with nodes x and y having
|
||||
@ -891,9 +919,9 @@
|
||||
metadata.</p></li><li class="listitem"><p>It is not feasible to know in advance which methods trees
|
||||
can support. Besides the usual <code class="classname">find</code> method, the
|
||||
first tree can support a <code class="classname">find_by_order</code> method, while
|
||||
the second can support an <code class="classname">overlaps</code> method.</p></li></ol></div><div class="figure"><a id="id533310"/><p class="title"><strong>Figure 22.23. Tree node invalidation</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_tree_node_invalidations.png" style="text-align: middle" alt="Tree node invalidation"/></div></div></div><br class="figure-break"/><p>These problems are solved by a combination of two means:
|
||||
the second can support an <code class="classname">overlaps</code> method.</p></li></ol></div><div class="figure"><a name="id646628"></a><p class="title"><b>Figure 22.23. Tree node invalidation</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_tree_node_invalidations.png" align="middle" alt="Tree node invalidation"></div></div></div><br class="figure-break"><p>These problems are solved by a combination of two means:
|
||||
node iterators, and template-template node updater
|
||||
parameters.</p><div class="section" title="Node Iterators"><div class="titlepage"><div><div><h6 class="title"><a id="container.tree.node.iterators"/>Node Iterators</h6></div></div></div><p>Each tree-based container defines two additional iterator
|
||||
parameters.</p><div class="section" title="Node Iterators"><div class="titlepage"><div><div><h6 class="title"><a name="container.tree.node.iterators"></a>Node Iterators</h6></div></div></div><p>Each tree-based container defines two additional iterator
|
||||
types, <code class="classname">const_node_iterator</code>
|
||||
and <code class="classname">node_iterator</code>.
|
||||
These iterators allow descending from a node to one of its
|
||||
@ -913,14 +941,14 @@
|
||||
node_end();
|
||||
</pre><p>The first pairs return node iterators corresponding to the
|
||||
root node of the tree; the latter pair returns node iterators
|
||||
corresponding to a just-after-leaf node.</p></div><div class="section" title="Node Updator"><div class="titlepage"><div><div><h6 class="title"><a id="container.tree.node.updator"/>Node Updator</h6></div></div></div><p>The tree-based containers are parametrized by a
|
||||
corresponding to a just-after-leaf node.</p></div><div class="section" title="Node Updator"><div class="titlepage"><div><div><h6 class="title"><a name="container.tree.node.updator"></a>Node Updator</h6></div></div></div><p>The tree-based containers are parametrized by a
|
||||
<code class="classname">Node_Update</code> template-template parameter. A
|
||||
tree-based container instantiates
|
||||
<code class="classname">Node_Update</code> to some
|
||||
<code class="classname">node_update</code> class, and publicly subclasses
|
||||
<code class="classname">node_update</code>. The graphic below shows this
|
||||
scheme, as well as some predefined policies (which are explained
|
||||
below).</p><div class="figure"><a id="id533420"/><p class="title"><strong>Figure 22.24. A tree and its update policy</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_tree_node_updator_policy_cd.png" style="text-align: middle" alt="A tree and its update policy"/></div></div></div><br class="figure-break"/><p><code class="classname">node_update</code> (an instantiation of
|
||||
below).</p><div class="figure"><a name="id646738"></a><p class="title"><b>Figure 22.24. A tree and its update policy</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_tree_node_updator_policy_cd.png" align="middle" alt="A tree and its update policy"></div></div></div><br class="figure-break"><p><code class="classname">node_update</code> (an instantiation of
|
||||
<code class="classname">Node_Update</code>) must define <code class="classname">metadata_type</code> as
|
||||
the type of metadata it requires. For order statistics,
|
||||
e.g., <code class="classname">metadata_type</code> might be <code class="classname">size_t</code>.
|
||||
@ -939,7 +967,7 @@
|
||||
<code class="classname">nd_it</code>. For example, say node x in the
|
||||
graphic below label A has an invalid invariant, but its' children,
|
||||
y and z have valid invariants. After the invocation, all three
|
||||
nodes should have valid invariants, as in label B.</p><div class="figure"><a id="id533517"/><p class="title"><strong>Figure 22.25. Restoring node invariants</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_restoring_node_invariants.png" style="text-align: middle" alt="Restoring node invariants"/></div></div></div><br class="figure-break"/><p>When a tree operation might invalidate some node invariant,
|
||||
nodes should have valid invariants, as in label B.</p><div class="figure"><a name="id646835"></a><p class="title"><b>Figure 22.25. Restoring node invariants</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_restoring_node_invariants.png" align="middle" alt="Restoring node invariants"></div></div></div><br class="figure-break"><p>When a tree operation might invalidate some node invariant,
|
||||
it invokes this method in its <code class="classname">node_update</code> base to
|
||||
restore the invariant. For example, the graphic below shows
|
||||
an <code class="function">insert</code> operation (point A); the tree performs some
|
||||
@ -947,15 +975,15 @@
|
||||
C, and D). (It is well known that any <code class="function">insert</code>,
|
||||
<code class="function">erase</code>, <code class="function">split</code> or <code class="function">join</code>, can restore
|
||||
all node invariants by a small number of node invariant updates (<a class="xref" href="policy_data_structures.html#biblio.clrs2001" title="Introduction to Algorithms, 2nd edition">[biblio.clrs2001]</a>)
|
||||
.</p><div class="figure"><a id="id533585"/><p class="title"><strong>Figure 22.26. Insert update sequence</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_update_seq_diagram.png" style="text-align: middle" alt="Insert update sequence"/></div></div></div><br class="figure-break"/><p>To complete the description of the scheme, three questions
|
||||
need to be answered:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>How can a tree which supports order statistics define a
|
||||
.</p><div class="figure"><a name="id646903"></a><p class="title"><b>Figure 22.26. Insert update sequence</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_update_seq_diagram.png" align="middle" alt="Insert update sequence"></div></div></div><br class="figure-break"><p>To complete the description of the scheme, three questions
|
||||
need to be answered:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>How can a tree which supports order statistics define a
|
||||
method such as <code class="classname">find_by_order</code>?</p></li><li class="listitem"><p>How can the node updater base access methods of the
|
||||
tree?</p></li><li class="listitem"><p>How can the following cyclic dependency be resolved?
|
||||
<code class="classname">node_update</code> is a base class of the tree, yet it
|
||||
uses node iterators defined in the tree (its child).</p></li></ol></div><p>The first two questions are answered by the fact that
|
||||
<code class="classname">node_update</code> (an instantiation of
|
||||
<code class="classname">Node_Update</code>) is a <span class="emphasis"><em>public</em></span> base class
|
||||
of the tree. Consequently:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>Any public methods of
|
||||
of the tree. Consequently:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>Any public methods of
|
||||
<code class="classname">node_update</code> are automatically methods of
|
||||
the tree (<a class="xref" href="policy_data_structures.html#biblio.alexandrescu01modern" title="Modern C++ Design: Generic Programming and Design Patterns Applied">[biblio.alexandrescu01modern]</a>).
|
||||
Thus an order-statistics node updater,
|
||||
@ -983,25 +1011,25 @@
|
||||
support order statistics or interval overlap queries.
|
||||
Seemingly, in this case a redundant policy - a policy which
|
||||
doesn't affect nodes' contents would suffice. This, would lead
|
||||
to the following drawbacks:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>Each node would carry a useless metadata object, wasting
|
||||
to the following drawbacks:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>Each node would carry a useless metadata object, wasting
|
||||
space.</p></li><li class="listitem"><p>The tree cannot know if its
|
||||
<code class="classname">Node_Update</code> policy actually modifies a
|
||||
node's metadata (this is halting reducible). In the graphic
|
||||
below, assume the shaded node is inserted. The tree would have
|
||||
to traverse the useless path shown to the root, applying
|
||||
redundant updates all the way.</p></li></ol></div><div class="figure"><a id="id533770"/><p class="title"><strong>Figure 22.27. Useless update path</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_rationale_null_node_updator.png" style="text-align: middle" alt="Useless update path"/></div></div></div><br class="figure-break"/><p>A null policy class, <code class="classname">null_node_update</code>
|
||||
redundant updates all the way.</p></li></ol></div><div class="figure"><a name="id647089"></a><p class="title"><b>Figure 22.27. Useless update path</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_rationale_null_node_updator.png" align="middle" alt="Useless update path"></div></div></div><br class="figure-break"><p>A null policy class, <code class="classname">null_node_update</code>
|
||||
solves both these problems. The tree detects that node
|
||||
invariants are irrelevant, and defines all accordingly.</p></div></div><div class="section" title="Split and Join"><div class="titlepage"><div><div><h6 class="title"><a id="container.tree.details.split"/>Split and Join</h6></div></div></div><p>Tree-based containers support split and join methods.
|
||||
invariants are irrelevant, and defines all accordingly.</p></div></div><div class="section" title="Split and Join"><div class="titlepage"><div><div><h6 class="title"><a name="container.tree.details.split"></a>Split and Join</h6></div></div></div><p>Tree-based containers support split and join methods.
|
||||
It is possible to split a tree so that it passes
|
||||
all nodes with keys larger than a given key to a different
|
||||
tree. These methods have the following advantages over the
|
||||
alternative of externally inserting to the destination
|
||||
tree and erasing from the source tree:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>These methods are efficient - red-black trees are split
|
||||
tree and erasing from the source tree:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>These methods are efficient - red-black trees are split
|
||||
and joined in poly-logarithmic complexity; ordered-vector
|
||||
trees are split and joined at linear complexity. The
|
||||
alternatives have super-linear complexity.</p></li><li class="listitem"><p>Aside from orders of growth, these operations perform
|
||||
few allocations and de-allocations. For red-black trees, allocations are not performed,
|
||||
and the methods are exception-free. </p></li></ol></div></div></div></div><div class="section" title="Trie"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.container.trie"/>Trie</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a id="container.trie.interface"/>Interface</h5></div></div></div><p>The trie-based container has the following declaration:</p><pre class="programlisting">
|
||||
and the methods are exception-free. </p></li></ol></div></div></div></div><div class="section" title="Trie"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.container.trie"></a>Trie</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a name="container.trie.interface"></a>Interface</h5></div></div></div><p>The trie-based container has the following declaration:</p><pre class="programlisting">
|
||||
template<typename Key,
|
||||
typename Mapped,
|
||||
typename Cmp_Fn = std::less<Key>,
|
||||
@ -1013,7 +1041,7 @@
|
||||
class Node_Update = null_node_update,
|
||||
typename Allocator = std::allocator<char> >
|
||||
class trie;
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p><code class="classname">Key</code> is the key type.</p></li><li class="listitem"><p><code class="classname">Mapped</code> is the mapped-policy.</p></li><li class="listitem"><p><code class="classname">E_Access_Traits</code> is described in below.</p></li><li class="listitem"><p><code class="classname">Tag</code> specifies which underlying data structure
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p><code class="classname">Key</code> is the key type.</p></li><li class="listitem"><p><code class="classname">Mapped</code> is the mapped-policy.</p></li><li class="listitem"><p><code class="classname">E_Access_Traits</code> is described in below.</p></li><li class="listitem"><p><code class="classname">Tag</code> specifies which underlying data structure
|
||||
to use, and is described shortly.</p></li><li class="listitem"><p><code class="classname">Node_Update</code> is a policy for updating node
|
||||
invariants. This is described below.</p></li><li class="listitem"><p><code class="classname">Allocator</code> is an allocator
|
||||
type.</p></li></ol></div><p>The <code class="classname">Tag</code> parameter specifies which underlying
|
||||
@ -1023,19 +1051,19 @@
|
||||
(this implementation follows <a class="xref" href="policy_data_structures.html#biblio.okasaki98mereable" title="Fast mergeable integer maps">[biblio.okasaki98mereable]</a> and
|
||||
<a class="xref" href="policy_data_structures.html#biblio.filliatre2000ptset" title="Ptset: Sets of integers implemented as Patricia trees">[biblio.filliatre2000ptset]</a>).
|
||||
</p><p>A (PATRICIA) trie is similar to a tree, but with the
|
||||
following differences:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>It explicitly views keys as a sequence of elements.
|
||||
following differences:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>It explicitly views keys as a sequence of elements.
|
||||
E.g., a trie can view a string as a sequence of
|
||||
characters; a trie can view a number as a sequence of
|
||||
bits.</p></li><li class="listitem"><p>It is not (necessarily) binary. Each node has fan-out n
|
||||
+ 1, where n is the number of distinct
|
||||
elements.</p></li><li class="listitem"><p>It stores values only at leaf nodes.</p></li><li class="listitem"><p>Internal nodes have the properties that A) each has at
|
||||
least two children, and B) each shares the same prefix with
|
||||
any of its descendant.</p></li></ol></div><p>A (PATRICIA) trie has some useful properties:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>It can be configured to use large node fan-out, giving it
|
||||
any of its descendant.</p></li></ol></div><p>A (PATRICIA) trie has some useful properties:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>It can be configured to use large node fan-out, giving it
|
||||
very efficient find performance (albeit at insertion
|
||||
complexity and size).</p></li><li class="listitem"><p>It works well for common-prefix keys.</p></li><li class="listitem"><p>It can support efficiently queries such as which
|
||||
keys match a certain prefix. This is sometimes useful in file
|
||||
systems and routers, and for "type-ahead" aka predictive text matching
|
||||
on mobile devices.</p></li></ol></div></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a id="container.trie.details"/>Details</h5></div></div></div><div class="section" title="Element Access Traits"><div class="titlepage"><div><div><h6 class="title"><a id="container.trie.details.etraits"/>Element Access Traits</h6></div></div></div><p>A trie inherently views its keys as sequences of elements.
|
||||
on mobile devices.</p></li></ol></div></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a name="container.trie.details"></a>Details</h5></div></div></div><div class="section" title="Element Access Traits"><div class="titlepage"><div><div><h6 class="title"><a name="container.trie.details.etraits"></a>Element Access Traits</h6></div></div></div><p>A trie inherently views its keys as sequences of elements.
|
||||
For example, a trie can view a string as a sequence of
|
||||
characters. A trie needs to map each of n elements to a
|
||||
number in {0, n - 1}. For example, a trie can map a
|
||||
@ -1044,7 +1072,7 @@
|
||||
(const) iterators, and that the <code class="classname">value_type</code> of this
|
||||
iterator can be cast to a <code class="classname">size_t</code>. There are several
|
||||
reasons, though, to decouple the mechanism by which the trie
|
||||
accesses its keys' elements from the trie:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>In some cases, the numerical value of an element is
|
||||
accesses its keys' elements from the trie:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>In some cases, the numerical value of an element is
|
||||
inappropriate. Consider a trie storing DNA strings. It is
|
||||
logical to use a trie with a fan-out of 5 = 1 + |{'A', 'C',
|
||||
'G', 'T'}|. This requires mapping 'T' to 3, though.</p></li><li class="listitem"><p>In some cases the keys' iterators are different than what
|
||||
@ -1072,31 +1100,31 @@
|
||||
sub-tree with leafs "a" and "as". The maximal common prefix is
|
||||
"a". The internal node contains, consequently, to const
|
||||
iterators, one pointing to <code class="varname">'a'</code>, and the other to
|
||||
<code class="varname">'s'</code>.</p><div class="figure"><a id="id534143"/><p class="title"><strong>Figure 22.28. A PATRICIA trie</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_pat_trie.png" style="text-align: middle" alt="A PATRICIA trie"/></div></div></div><br class="figure-break"/></div><div class="section" title="Node Invariants"><div class="titlepage"><div><div><h6 class="title"><a id="container.trie.details.node"/>Node Invariants</h6></div></div></div><p>Trie-based containers support node invariants, as do
|
||||
<code class="varname">'s'</code>.</p><div class="figure"><a name="id647461"></a><p class="title"><b>Figure 22.28. A PATRICIA trie</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_pat_trie.png" align="middle" alt="A PATRICIA trie"></div></div></div><br class="figure-break"></div><div class="section" title="Node Invariants"><div class="titlepage"><div><div><h6 class="title"><a name="container.trie.details.node"></a>Node Invariants</h6></div></div></div><p>Trie-based containers support node invariants, as do
|
||||
tree-based containers. There are two minor
|
||||
differences, though, which, unfortunately, thwart sharing them
|
||||
sharing the same node-updating policies:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>A trie's <code class="classname">Node_Update</code> template-template
|
||||
sharing the same node-updating policies:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>A trie's <code class="classname">Node_Update</code> template-template
|
||||
parameter is parametrized by <code class="classname">E_Access_Traits</code>, while
|
||||
a tree's <code class="classname">Node_Update</code> template-template parameter is
|
||||
parametrized by <code class="classname">Cmp_Fn</code>.</p></li><li class="listitem"><p>Tree-based containers store values in all nodes, while
|
||||
trie-based containers (at least in this implementation) store
|
||||
values in leafs.</p></li></ol></div><p>The graphic below shows the scheme, as well as some predefined
|
||||
policies (which are explained below).</p><div class="figure"><a id="id534230"/><p class="title"><strong>Figure 22.29. A trie and its update policy</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_trie_node_updator_policy_cd.png" style="text-align: middle" alt="A trie and its update policy"/></div></div></div><br class="figure-break"/><p>This library offers the following pre-defined trie node
|
||||
updating policies:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
policies (which are explained below).</p><div class="figure"><a name="id647548"></a><p class="title"><b>Figure 22.29. A trie and its update policy</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_trie_node_updator_policy_cd.png" align="middle" alt="A trie and its update policy"></div></div></div><br class="figure-break"><p>This library offers the following pre-defined trie node
|
||||
updating policies:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
<code class="classname">trie_order_statistics_node_update</code>
|
||||
supports order statistics.
|
||||
</p></li><li class="listitem"><p><code class="classname">trie_prefix_search_node_update</code>
|
||||
supports searching for ranges that match a given prefix.</p></li><li class="listitem"><p><code class="classname">null_node_update</code>
|
||||
is the null node updater.</p></li></ol></div></div><div class="section" title="Split and Join"><div class="titlepage"><div><div><h6 class="title"><a id="container.trie.details.split"/>Split and Join</h6></div></div></div><p>Trie-based containers support split and join methods; the
|
||||
is the null node updater.</p></li></ol></div></div><div class="section" title="Split and Join"><div class="titlepage"><div><div><h6 class="title"><a name="container.trie.details.split"></a>Split and Join</h6></div></div></div><p>Trie-based containers support split and join methods; the
|
||||
rationale is equal to that of tree-based containers supporting
|
||||
these methods.</p></div></div></div><div class="section" title="List"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.container.list"/>List</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a id="container.list.interface"/>Interface</h5></div></div></div><p>The list-based container has the following declaration:</p><pre class="programlisting">
|
||||
these methods.</p></div></div></div><div class="section" title="List"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.container.list"></a>List</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a name="container.list.interface"></a>Interface</h5></div></div></div><p>The list-based container has the following declaration:</p><pre class="programlisting">
|
||||
template<typename Key,
|
||||
typename Mapped,
|
||||
typename Eq_Fn = std::equal_to<Key>,
|
||||
typename Update_Policy = move_to_front_lu_policy<>,
|
||||
typename Allocator = std::allocator<char> >
|
||||
class list_update;
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
<code class="classname">Key</code> is the key type.
|
||||
</p></li><li class="listitem"><p>
|
||||
<code class="classname">Mapped</code> is the mapped-policy.
|
||||
@ -1124,12 +1152,12 @@
|
||||
useful manner? Remarkably, many on-line competitive
|
||||
algorithms exist for reordering lists to reflect access
|
||||
prediction. (See <a class="xref" href="policy_data_structures.html#biblio.motwani95random" title="Randomized Algorithms">[biblio.motwani95random]</a> and <a class="xref" href="policy_data_structures.html#biblio.andrew04mtf" title="MTF, Bit, and COMB: A Guide to Deterministic and Randomized Algorithms for the List Update Problem">[biblio.andrew04mtf]</a>).
|
||||
</p></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a id="container.list.details"/>Details</h5></div></div></div><p>
|
||||
</p><div class="section" title="Underlying Data Structure"><div class="titlepage"><div><div><h6 class="title"><a id="container.list.details.ds"/>Underlying Data Structure</h6></div></div></div><p>The graphic below shows a
|
||||
</p></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a name="container.list.details"></a>Details</h5></div></div></div><p>
|
||||
</p><div class="section" title="Underlying Data Structure"><div class="titlepage"><div><div><h6 class="title"><a name="container.list.details.ds"></a>Underlying Data Structure</h6></div></div></div><p>The graphic below shows a
|
||||
simple list of integer keys. If we search for the integer 6, we
|
||||
are paying an overhead: the link with key 6 is only the fifth
|
||||
link; if it were the first link, it could be accessed
|
||||
faster.</p><div class="figure"><a id="id534485"/><p class="title"><strong>Figure 22.30. A simple list</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_simple_list.png" style="text-align: middle" alt="A simple list"/></div></div></div><br class="figure-break"/><p>List-update algorithms reorder lists as elements are
|
||||
faster.</p><div class="figure"><a name="id647803"></a><p class="title"><b>Figure 22.30. A simple list</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_simple_list.png" align="middle" alt="A simple list"></div></div></div><br class="figure-break"><p>List-update algorithms reorder lists as elements are
|
||||
accessed. They try to determine, by the access history, which
|
||||
keys to move to the front of the list. Some of these algorithms
|
||||
require adding some metadata alongside each entry.</p><p>For example, in the graphic below label A shows the counter
|
||||
@ -1139,7 +1167,7 @@
|
||||
predetermined value, say 10, as shown in label C, the count is set
|
||||
to 0 and the node is moved to the front of the list, as in label
|
||||
D.
|
||||
</p><div class="figure"><a id="id534532"/><p class="title"><strong>Figure 22.31. The counter algorithm</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_list_update.png" style="text-align: middle" alt="The counter algorithm"/></div></div></div><br class="figure-break"/></div><div class="section" title="Policies"><div class="titlepage"><div><div><h6 class="title"><a id="container.list.details.policies"/>Policies</h6></div></div></div><p>this library allows instantiating lists with policies
|
||||
</p><div class="figure"><a name="id647850"></a><p class="title"><b>Figure 22.31. The counter algorithm</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_list_update.png" align="middle" alt="The counter algorithm"></div></div></div><br class="figure-break"></div><div class="section" title="Policies"><div class="titlepage"><div><div><h6 class="title"><a name="container.list.details.policies"></a>Policies</h6></div></div></div><p>this library allows instantiating lists with policies
|
||||
implementing any algorithm moving nodes to the front of the
|
||||
list (policies implementing algorithms interchanging nodes are
|
||||
unsupported).</p><p>Associative containers based on lists are parametrized by a
|
||||
@ -1174,7 +1202,7 @@
|
||||
the list. The latter type is very useful in this library,
|
||||
since there is no need to associate metadata with each element.
|
||||
(See <a class="xref" href="policy_data_structures.html#biblio.andrew04mtf" title="MTF, Bit, and COMB: A Guide to Deterministic and Randomized Algorithms for the List Update Problem">[biblio.andrew04mtf]</a>
|
||||
</p></div><div class="section" title="Use in Multimaps"><div class="titlepage"><div><div><h6 class="title"><a id="container.list.details.mapped"/>Use in Multimaps</h6></div></div></div><p>In this library, there are no equivalents for the standard's
|
||||
</p></div><div class="section" title="Use in Multimaps"><div class="titlepage"><div><div><h6 class="title"><a name="container.list.details.mapped"></a>Use in Multimaps</h6></div></div></div><p>In this library, there are no equivalents for the standard's
|
||||
multimaps and multisets; instead one uses an associative
|
||||
container mapping primary keys to secondary keys.</p><p>List-based containers are especially useful as associative
|
||||
containers for secondary keys. In fact, they are implemented
|
||||
@ -1189,7 +1217,7 @@
|
||||
associative-containers in situations where the average ratio of
|
||||
secondary keys to primary keys is low (or even 1).</p><p>In order to reduce the per-container memory overhead as much
|
||||
as possible, they are implemented as closely as possible to
|
||||
singly-linked lists.</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
singly-linked lists.</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
List-based containers do not store internally the number
|
||||
of values that they hold. This means that their <code class="function">size</code>
|
||||
method has linear complexity (just like <code class="classname">std::list</code>).
|
||||
@ -1203,7 +1231,7 @@
|
||||
object (a hash-based container object holds a
|
||||
hash functor). List-based containers, conversely, only have
|
||||
class-wide policy objects.
|
||||
</p></li></ol></div></div></div></div><div class="section" title="Priority Queue"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.design.container.priority_queue"/>Priority Queue</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a id="container.priority_queue.interface"/>Interface</h5></div></div></div><p>The priority queue container has the following
|
||||
</p></li></ol></div></div></div></div><div class="section" title="Priority Queue"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.design.container.priority_queue"></a>Priority Queue</h4></div></div></div><div class="section" title="Interface"><div class="titlepage"><div><div><h5 class="title"><a name="container.priority_queue.interface"></a>Interface</h5></div></div></div><p>The priority queue container has the following
|
||||
declaration:
|
||||
</p><pre class="programlisting">
|
||||
template<typename Value_Type,
|
||||
@ -1211,7 +1239,7 @@
|
||||
typename Tag = pairing_heap_tag,
|
||||
typename Allocator = std::allocator<char > >
|
||||
class priority_queue;
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p><code class="classname">Value_Type</code> is the value type.</p></li><li class="listitem"><p><code class="classname">Cmp_Fn</code> is a value comparison functor</p></li><li class="listitem"><p><code class="classname">Tag</code> specifies which underlying data structure
|
||||
</pre><p>The parameters have the following meaning:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p><code class="classname">Value_Type</code> is the value type.</p></li><li class="listitem"><p><code class="classname">Cmp_Fn</code> is a value comparison functor</p></li><li class="listitem"><p><code class="classname">Tag</code> specifies which underlying data structure
|
||||
to use.</p></li><li class="listitem"><p><code class="classname">Allocator</code> is an allocator
|
||||
type.</p></li></ol></div><p>The <code class="classname">Tag</code> parameter specifies which underlying
|
||||
data structure to use. Instantiating it by<code class="classname">pairing_heap_tag</code>,<code class="classname">binary_heap_tag</code>,
|
||||
@ -1239,7 +1267,7 @@
|
||||
insufficient for manipulating priority-queues. </p><p>Different settings require different priority-queue
|
||||
implementations which are described in later; see traits
|
||||
discusses ways to differentiate between the different traits of
|
||||
different implementations.</p></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a id="container.priority_queue.details"/>Details</h5></div></div></div><div class="section" title="Iterators"><div class="titlepage"><div><div><h6 class="title"><a id="container.priority_queue.details.iterators"/>Iterators</h6></div></div></div><p>There are many different underlying-data structures for
|
||||
different implementations.</p></div><div class="section" title="Details"><div class="titlepage"><div><div><h5 class="title"><a name="container.priority_queue.details"></a>Details</h5></div></div></div><div class="section" title="Iterators"><div class="titlepage"><div><div><h6 class="title"><a name="container.priority_queue.details.iterators"></a>Iterators</h6></div></div></div><p>There are many different underlying-data structures for
|
||||
implementing priority queues. Unfortunately, most such
|
||||
structures are oriented towards making <code class="function">push</code> and
|
||||
<code class="function">top</code> efficient, and consequently don't allow efficient
|
||||
@ -1306,12 +1334,12 @@
|
||||
this data and a priority queue's iterator. Using the embedded
|
||||
method would need to use two associative containers. Similar
|
||||
problems might arise in cases where a value can reside
|
||||
simultaneously in many priority queues.</p></div><div class="section" title="Underlying Data Structure"><div class="titlepage"><div><div><h6 class="title"><a id="container.priority_queue.details.d"/>Underlying Data Structure</h6></div></div></div><p>There are three main implementations of priority queues: the
|
||||
simultaneously in many priority queues.</p></div><div class="section" title="Underlying Data Structure"><div class="titlepage"><div><div><h6 class="title"><a name="container.priority_queue.details.d"></a>Underlying Data Structure</h6></div></div></div><p>There are three main implementations of priority queues: the
|
||||
first employs a binary heap, typically one which uses a
|
||||
sequence; the second uses a tree (or forest of trees), which is
|
||||
typically less structured than an associative container's tree;
|
||||
the third simply uses an associative container. These are
|
||||
shown in the graphic below, in labels A1 and A2, label B, and label C.</p><div class="figure"><a id="id535063"/><p class="title"><strong>Figure 22.32. Underlying Priority-Queue Data-Structures.</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_priority_queue_different_underlying_dss.png" style="text-align: middle" alt="Underlying Priority-Queue Data-Structures."/></div></div></div><br class="figure-break"/><p>Roughly speaking, any value that is both pushed and popped
|
||||
shown in the graphic below, in labels A1 and A2, label B, and label C.</p><div class="figure"><a name="id648381"></a><p class="title"><b>Figure 22.32. Underlying Priority-Queue Data-Structures.</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_priority_queue_different_underlying_dss.png" align="middle" alt="Underlying Priority-Queue Data-Structures."></div></div></div><br class="figure-break"><p>Roughly speaking, any value that is both pushed and popped
|
||||
from a priority queue must incur a logarithmic expense (in the
|
||||
amortized sense). Any priority queue implementation that would
|
||||
avoid this, would violate known bounds on comparison-based
|
||||
@ -1327,7 +1355,7 @@
|
||||
of <code class="function">push</code> and <code class="function">pop</code> operations.</p><p>This library implements different algorithms using a
|
||||
single class: <code class="classname">priority_queue</code>.
|
||||
Instantiating the <code class="classname">Tag</code> template parameter, "selects"
|
||||
the implementation:</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
the implementation:</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Instantiating <code class="classname">Tag = binary_heap_tag</code> creates
|
||||
a binary heap of the form in represented in the graphic with labels A1 or A2. The former is internally
|
||||
selected by priority_queue
|
||||
@ -1381,7 +1409,7 @@
|
||||
at all; the priority queue itself is an associative container.
|
||||
Most associative containers are too structured to compete with
|
||||
priority queues in terms of <code class="function">push</code> and <code class="function">pop</code>
|
||||
performance.</p></div><div class="section" title="Traits"><div class="titlepage"><div><div><h6 class="title"><a id="container.priority_queue.details.traits"/>Traits</h6></div></div></div><p>It would be nice if all priority queues could
|
||||
performance.</p></div><div class="section" title="Traits"><div class="titlepage"><div><div><h6 class="title"><a name="container.priority_queue.details.traits"></a>Traits</h6></div></div></div><p>It would be nice if all priority queues could
|
||||
share exactly the same behavior regardless of implementation. Sadly, this is not possible. Just one for instance is in join operations: joining
|
||||
two binary heaps might throw an exception (not corrupt
|
||||
any of the heaps on which it operates), but joining two pairing
|
||||
@ -1391,7 +1419,7 @@
|
||||
container <code class="classname">Cntnr</code>, the tag of the underlying
|
||||
data structure can be found via <code class="classname">typename
|
||||
Cntnr::container_category</code>; this is one of the possible tags shown in the graphic below.
|
||||
</p><div class="figure"><a id="id535355"/><p class="title"><strong>Figure 22.33. Priority-Queue Data-Structure Tags.</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_priority_queue_tag_hierarchy.png" style="text-align: middle" alt="Priority-Queue Data-Structure Tags."/></div></div></div><br class="figure-break"/><p>Additionally, a traits mechanism can be used to query a
|
||||
</p><div class="figure"><a name="id648673"></a><p class="title"><b>Figure 22.33. Priority-Queue Data-Structure Tags.</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_priority_queue_tag_hierarchy.png" align="middle" alt="Priority-Queue Data-Structure Tags."></div></div></div><br class="figure-break"><p>Additionally, a traits mechanism can be used to query a
|
||||
container type for its attributes. Given any container
|
||||
<code class="classname">Cntnr</code>, then </p><pre class="programlisting">__gnu_pbds::container_traits<Cntnr></pre><p>
|
||||
is a traits class identifying the properties of the
|
||||
@ -1427,4 +1455,4 @@
|
||||
<code class="function">erase</code> operations is non-negligible (say
|
||||
super-logarithmic in the total sequence of operations) - binary
|
||||
heaps will perform badly.
|
||||
</p></div></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="policy_data_structures_using.html">Prev</a> </td><td align="center"><a accesskey="u" href="policy_data_structures.html">Up</a></td><td align="right"> <a accesskey="n" href="policy_based_data_structures_test.html">Next</a></td></tr><tr><td align="left" valign="top">Using </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Testing</td></tr></table></div></body></html>
|
||||
</p></div></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="policy_data_structures_using.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="policy_data_structures.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="policy_based_data_structures_test.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Using </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Testing</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,6 +1,34 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Using</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" 	ISO C++ , 	policy , 	container , 	data , 	structure , 	associated , 	tree , 	trie , 	hash , 	metaprogramming "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"/><link rel="prev" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"/><link rel="next" href="policy_data_structures_design.html" title="Design"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Using</th></tr><tr><td align="left"><a accesskey="p" href="policy_data_structures.html">Prev</a> </td><th width="60%" align="center">Chapter 22. Policy-Based Data Structures</th><td align="right"> <a accesskey="n" href="policy_data_structures_design.html">Next</a></td></tr></table><hr/></div><div class="section" title="Using"><div class="titlepage"><div><div><h2 class="title"><a id="containers.pbds.using"/>Using</h2></div></div></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h3 class="title"><a id="pbds.using.prereq"/>Prerequisites</h3></div></div></div><p>The library contains only header files, and does not require any
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Using</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
policy
|
||||
,
|
||||
container
|
||||
,
|
||||
data
|
||||
,
|
||||
structure
|
||||
,
|
||||
associated
|
||||
,
|
||||
tree
|
||||
,
|
||||
trie
|
||||
,
|
||||
hash
|
||||
,
|
||||
metaprogramming
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"><link rel="prev" href="policy_data_structures.html" title="Chapter 22. Policy-Based Data Structures"><link rel="next" href="policy_data_structures_design.html" title="Design"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Using</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="policy_data_structures.html">Prev</a> </td><th width="60%" align="center">Chapter 22. Policy-Based Data Structures</th><td width="20%" align="right"> <a accesskey="n" href="policy_data_structures_design.html">Next</a></td></tr></table><hr></div><div class="section" title="Using"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="containers.pbds.using"></a>Using</h2></div></div></div><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h3 class="title"><a name="pbds.using.prereq"></a>Prerequisites</h3></div></div></div><p>The library contains only header files, and does not require any
|
||||
other libraries except the standard C++ library . All classes are
|
||||
defined in namespace <code class="code">__gnu_pbds</code>. The library internally
|
||||
uses macros beginning with <code class="code">PB_DS</code>, but
|
||||
@ -11,11 +39,11 @@
|
||||
Further dependencies are necessary to create the visual output
|
||||
for the performance tests. To create these graphs, an
|
||||
additional package is needed: <span class="command"><strong>pychart</strong></span>.
|
||||
</p></div><div class="section" title="Organization"><div class="titlepage"><div><div><h3 class="title"><a id="pbds.using.organization"/>Organization</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Organization"><div class="titlepage"><div><div><h3 class="title"><a name="pbds.using.organization"></a>Organization</h3></div></div></div><p>
|
||||
The various data structures are organized as follows.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Branch-Based
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>
|
||||
<code class="classname">basic_branch</code>
|
||||
is an abstract base class for branched-based
|
||||
associative-containers
|
||||
@ -29,7 +57,7 @@
|
||||
associative-containers
|
||||
</p></li></ul></div></li><li class="listitem"><p>
|
||||
Hash-Based
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>
|
||||
<code class="classname">basic_hash_table</code>
|
||||
is an abstract base class for hash-based
|
||||
associative-containers
|
||||
@ -43,12 +71,12 @@
|
||||
associative-containers
|
||||
</p></li></ul></div></li><li class="listitem"><p>
|
||||
List-Based
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>
|
||||
<code class="classname">list_update</code>
|
||||
list-based update-policy associative container
|
||||
</p></li></ul></div></li><li class="listitem"><p>
|
||||
Heap-Based
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>
|
||||
<code class="classname">priority_queue</code>
|
||||
A priority queue.
|
||||
</p></li></ul></div></li></ul></div><p>
|
||||
@ -62,7 +90,7 @@
|
||||
In addition, there are the following diagnostics classes,
|
||||
used to report errors specific to this library's data
|
||||
structures.
|
||||
</p><div class="figure"><a id="id528654"/><p class="title"><strong>Figure 22.7. Exception Hierarchy</strong></p><div class="figure-contents"><div class="mediaobject" style="text-align: center"><img src="../images/pbds_exception_hierarchy.png" style="text-align: middle" alt="Exception Hierarchy"/></div></div></div><br class="figure-break"/></div><div class="section" title="Tutorial"><div class="titlepage"><div><div><h3 class="title"><a id="pbds.using.tutorial"/>Tutorial</h3></div></div></div><div class="section" title="Basic Use"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.using.tutorial.basic"/>Basic Use</h4></div></div></div><p>
|
||||
</p><div class="figure"><a name="id641972"></a><p class="title"><b>Figure 22.7. Exception Hierarchy</b></p><div class="figure-contents"><div class="mediaobject" align="center"><img src="../images/pbds_exception_hierarchy.png" align="middle" alt="Exception Hierarchy"></div></div></div><br class="figure-break"></div><div class="section" title="Tutorial"><div class="titlepage"><div><div><h3 class="title"><a name="pbds.using.tutorial"></a>Tutorial</h3></div></div></div><div class="section" title="Basic Use"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.using.tutorial.basic"></a>Basic Use</h4></div></div></div><p>
|
||||
For the most part, the policy-based containers containers in
|
||||
namespace <code class="literal">__gnu_pbds</code> have the same interface as
|
||||
the equivalent containers in the standard C++ library, except for
|
||||
@ -186,7 +214,7 @@
|
||||
</pre><p>
|
||||
so all hash-based associative containers inherit the same
|
||||
hash-functor accessor methods.
|
||||
</p></div><div class="section" title="Configuring via Template Parameters"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.using.tutorial.configuring"/>
|
||||
</p></div><div class="section" title="Configuring via Template Parameters"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.using.tutorial.configuring"></a>
|
||||
Configuring via Template Parameters
|
||||
</h4></div></div></div><p>
|
||||
In general, each of this library's containers is
|
||||
@ -240,9 +268,9 @@
|
||||
by one of them.</p><p>Note that as opposed to the
|
||||
<code class="classname">std::priority_queue</code>,
|
||||
<code class="classname">__gnu_pbds::priority_queue</code> is not a
|
||||
sequence-adapter; it is a regular container.</p></div><div class="section" title="Querying Container Attributes"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.using.tutorial.traits"/>
|
||||
sequence-adapter; it is a regular container.</p></div><div class="section" title="Querying Container Attributes"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.using.tutorial.traits"></a>
|
||||
Querying Container Attributes
|
||||
</h4></div></div></div><p/><p>A containers underlying data structure
|
||||
</h4></div></div></div><p></p><p>A containers underlying data structure
|
||||
affect their performance; Unfortunately, they can also affect
|
||||
their interface. When manipulating generically associative
|
||||
containers, it is often useful to be able to statically
|
||||
@ -278,9 +306,9 @@
|
||||
</pre><p>is the container's invalidation guarantee. Invalidation
|
||||
guarantees are especially important regarding priority queues,
|
||||
since in this library's design, iterators are practically the
|
||||
only way to manipulate them.</p></div><div class="section" title="Point and Range Iteration"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.using.tutorial.point_range_iteration"/>
|
||||
only way to manipulate them.</p></div><div class="section" title="Point and Range Iteration"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.using.tutorial.point_range_iteration"></a>
|
||||
Point and Range Iteration
|
||||
</h4></div></div></div><p/><p>This library differentiates between two types of methods
|
||||
</h4></div></div></div><p></p><p>This library differentiates between two types of methods
|
||||
and iterators: point-type, and range-type. For example,
|
||||
<code class="function">find</code> and <code class="function">insert</code> are point-type methods, since
|
||||
they each deal with a specific element; their returned
|
||||
@ -377,11 +405,11 @@
|
||||
</pre><p>
|
||||
gives one of three pre-determined types that answer this
|
||||
query.
|
||||
</p></div></div><div class="section" title="Examples"><div class="titlepage"><div><div><h3 class="title"><a id="pbds.using.examples"/>Examples</h3></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Examples"><div class="titlepage"><div><div><h3 class="title"><a name="pbds.using.examples"></a>Examples</h3></div></div></div><p>
|
||||
Additional code examples are provided in the source
|
||||
distribution, as part of the regression and performance
|
||||
testsuite.
|
||||
</p><div class="section" title="Intermediate Use"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.using.examples.basic"/>Intermediate Use</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="section" title="Intermediate Use"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.using.examples.basic"></a>Intermediate Use</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Basic use of maps:
|
||||
<code class="filename">basic_map.cc</code>
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -405,7 +433,7 @@
|
||||
</p></li><li class="listitem"><p>
|
||||
Conditionally erasing values from a priority queue:
|
||||
<code class="filename">priority_queue_erase_if.cc</code>
|
||||
</p></li></ul></div></div><div class="section" title="Querying with container_traits"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.using.examples.query"/>Querying with <code class="classname">container_traits</code> </h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></li></ul></div></div><div class="section" title="Querying with container_traits"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.using.examples.query"></a>Querying with <code class="classname">container_traits</code> </h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Using <code class="classname">container_traits</code> to query
|
||||
about underlying data structure behavior:
|
||||
<code class="filename">assoc_container_traits.cc</code>
|
||||
@ -416,7 +444,7 @@
|
||||
Using <code class="classname">container_traits</code>
|
||||
to query about underlying data structure behavior:
|
||||
<code class="filename">priority_queue_container_traits.cc</code>
|
||||
</p></li></ul></div></div><div class="section" title="By Container Method"><div class="titlepage"><div><div><h4 class="title"><a id="pbds.using.examples.container"/>By Container Method</h4></div></div></div><p/><div class="section" title="Hash-Based"><div class="titlepage"><div><div><h5 class="title"><a id="pbds.using.examples.container.hash"/>Hash-Based</h5></div></div></div><div class="section" title="size Related"><div class="titlepage"><div><div><h6 class="title"><a id="pbds.using.examples.container.hash.resize"/>size Related</h6></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></li></ul></div></div><div class="section" title="By Container Method"><div class="titlepage"><div><div><h4 class="title"><a name="pbds.using.examples.container"></a>By Container Method</h4></div></div></div><p></p><div class="section" title="Hash-Based"><div class="titlepage"><div><div><h5 class="title"><a name="pbds.using.examples.container.hash"></a>Hash-Based</h5></div></div></div><div class="section" title="size Related"><div class="titlepage"><div><div><h6 class="title"><a name="pbds.using.examples.container.hash.resize"></a>size Related</h6></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Setting the initial size of a hash-based container
|
||||
object:
|
||||
<code class="filename">hash_initial_size.cc</code>
|
||||
@ -434,7 +462,7 @@
|
||||
</p></li><li class="listitem"><p>
|
||||
Changing the load factors of a hash-based container
|
||||
object: <code class="filename">hash_load_set_change.cc</code>
|
||||
</p></li></ul></div></div><div class="section" title="Hashing Function Related"><div class="titlepage"><div><div><h6 class="title"><a id="pbds.using.examples.container.hash.hashor"/>Hashing Function Related</h6></div></div></div><p/><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></li></ul></div></div><div class="section" title="Hashing Function Related"><div class="titlepage"><div><div><h6 class="title"><a name="pbds.using.examples.container.hash.hashor"></a>Hashing Function Related</h6></div></div></div><p></p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Using a modulo range-hashing function for the case of an
|
||||
unknown skewed key distribution:
|
||||
<code class="filename">hash_mod.cc</code>
|
||||
@ -448,7 +476,7 @@
|
||||
</p></li><li class="listitem"><p>
|
||||
Writing a ranged-hash functor:
|
||||
<code class="filename">ranged_hash.cc</code>
|
||||
</p></li></ul></div></div></div><div class="section" title="Branch-Based"><div class="titlepage"><div><div><h5 class="title"><a id="pbds.using.examples.container.branch"/>Branch-Based</h5></div></div></div><div class="section" title="split or join Related"><div class="titlepage"><div><div><h6 class="title"><a id="pbds.using.examples.container.branch.split"/>split or join Related</h6></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Branch-Based"><div class="titlepage"><div><div><h5 class="title"><a name="pbds.using.examples.container.branch"></a>Branch-Based</h5></div></div></div><div class="section" title="split or join Related"><div class="titlepage"><div><div><h6 class="title"><a name="pbds.using.examples.container.branch.split"></a>split or join Related</h6></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Joining two tree-based container objects:
|
||||
<code class="filename">tree_join.cc</code>
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -458,21 +486,21 @@
|
||||
Order statistics while joining two tree-based container
|
||||
objects:
|
||||
<code class="filename">tree_order_statistics_join.cc</code>
|
||||
</p></li></ul></div></div><div class="section" title="Node Invariants"><div class="titlepage"><div><div><h6 class="title"><a id="pbds.using.examples.container.branch.invariants"/>Node Invariants</h6></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></li></ul></div></div><div class="section" title="Node Invariants"><div class="titlepage"><div><div><h6 class="title"><a name="pbds.using.examples.container.branch.invariants"></a>Node Invariants</h6></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Using trees for order statistics:
|
||||
<code class="filename">tree_order_statistics.cc</code>
|
||||
</p></li><li class="listitem"><p>
|
||||
Augmenting trees to support operations on line
|
||||
intervals:
|
||||
<code class="filename">tree_intervals.cc</code>
|
||||
</p></li></ul></div></div><div class="section" title="trie"><div class="titlepage"><div><div><h6 class="title"><a id="pbds.using.examples.container.branch.trie"/>trie</h6></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></li></ul></div></div><div class="section" title="trie"><div class="titlepage"><div><div><h6 class="title"><a name="pbds.using.examples.container.branch.trie"></a>trie</h6></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Using a PATRICIA trie for DNA strings:
|
||||
<code class="filename">trie_dna.cc</code>
|
||||
</p></li><li class="listitem"><p>
|
||||
Using a PATRICIA
|
||||
trie for finding all entries whose key matches a given prefix:
|
||||
<code class="filename">trie_prefix_search.cc</code>
|
||||
</p></li></ul></div></div></div><div class="section" title="Priority Queues"><div class="titlepage"><div><div><h5 class="title"><a id="pbds.using.examples.container.priority_queue"/>Priority Queues</h5></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Priority Queues"><div class="titlepage"><div><div><h5 class="title"><a name="pbds.using.examples.container.priority_queue"></a>Priority Queues</h5></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Cross referencing an associative container and a priority
|
||||
queue: <code class="filename">priority_queue_xref.cc</code>
|
||||
</p></li><li class="listitem"><p>
|
||||
@ -480,4 +508,4 @@
|
||||
very simple version of Dijkstra's shortest path
|
||||
algorithm:
|
||||
<code class="filename">priority_queue_dijkstra.cc</code>
|
||||
</p></li></ul></div></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="policy_data_structures.html">Prev</a> </td><td align="center"><a accesskey="u" href="policy_data_structures.html">Up</a></td><td align="right"> <a accesskey="n" href="policy_data_structures_design.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 22. Policy-Based Data Structures </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Design</td></tr></table></div></body></html>
|
||||
</p></li></ul></div></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="policy_data_structures.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="policy_data_structures.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="policy_data_structures_design.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 22. Policy-Based Data Structures </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Design</td></tr></table></div></body></html>
|
||||
|
||||
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@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 2. Setup</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="intro.html" title="Part I. Introduction"/><link rel="prev" href="bugs.html" title="Bugs"/><link rel="next" href="configure.html" title="Configure"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 2. Setup</th></tr><tr><td align="left"><a accesskey="p" href="bugs.html">Prev</a> </td><th width="60%" align="center">Part I.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 2. Setup</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="intro.html" title="Part I. Introduction"><link rel="prev" href="bugs.html" title="Bugs"><link rel="next" href="configure.html" title="Configure"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 2. Setup</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bugs.html">Prev</a> </td><th width="60%" align="center">Part I.
|
||||
Introduction
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="configure.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 2. Setup"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.setup"/>Chapter 2. Setup</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="configure.html">Configure</a></span></dt><dt><span class="section"><a href="make.html">Make</a></span></dt></dl></div><p>To transform libstdc++ sources into installed include files
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="configure.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 2. Setup"><div class="titlepage"><div><div><h2 class="title"><a name="manual.intro.setup"></a>Chapter 2. Setup</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="configure.html">Configure</a></span></dt><dt><span class="section"><a href="make.html">Make</a></span></dt></dl></div><p>To transform libstdc++ sources into installed include files
|
||||
and properly built binaries useful for linking to other software is
|
||||
a multi-step process. Steps include getting the sources,
|
||||
configuring and building the sources, testing, and installation.
|
||||
@ -19,12 +27,12 @@
|
||||
make install
|
||||
</pre><p>
|
||||
Each step is described in more detail in the following sections.
|
||||
</p><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.setup.prereq"/>Prerequisites</h2></div></div></div><p>
|
||||
</p><div class="section" title="Prerequisites"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.intro.setup.prereq"></a>Prerequisites</h2></div></div></div><p>
|
||||
Because libstdc++ is part of GCC, the primary source for
|
||||
installation instructions is
|
||||
<a class="link" href="http://gcc.gnu.org/install/">the GCC install page</a>.
|
||||
<a class="link" href="http://gcc.gnu.org/install/" target="_top">the GCC install page</a>.
|
||||
In particular, list of prerequisite software needed to build the library
|
||||
<a class="link" href="http://gcc.gnu.org/install/prerequisites.html">
|
||||
<a class="link" href="http://gcc.gnu.org/install/prerequisites.html" target="_top">
|
||||
starts with those requirements.</a> The same pages also list
|
||||
the tools you will need if you wish to modify the source.
|
||||
</p><p>
|
||||
@ -32,7 +40,7 @@
|
||||
</p><p>As of GCC 4.0.1 the minimum version of binutils required to build
|
||||
libstdc++ is <code class="code">2.15.90.0.1.1</code>. You can get snapshots
|
||||
(as well as releases) of binutils from
|
||||
<a class="link" href="ftp://sources.redhat.com/pub/binutils/">
|
||||
<a class="link" href="ftp://sources.redhat.com/pub/binutils/" target="_top">
|
||||
ftp://sources.redhat.com/pub/binutils</a>.
|
||||
Older releases of libstdc++ do not require such a recent version,
|
||||
but to take full advantage of useful space-saving features and
|
||||
@ -87,7 +95,7 @@ zh_TW BIG5
|
||||
libstdc++ after "C" locales are installed is not necessary.
|
||||
</p><p>
|
||||
To install support for locales, do only one of the following:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>install all locales</p></li><li class="listitem"><p>install just the necessary locales</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>with Debian GNU/Linux:</p><p> Add the above list, as shown, to the file
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>install all locales</p></li><li class="listitem"><p>install just the necessary locales</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>with Debian GNU/Linux:</p><p> Add the above list, as shown, to the file
|
||||
<code class="code">/etc/locale.gen</code> </p><p> run <code class="code">/usr/sbin/locale-gen</code> </p></li><li class="listitem"><p>on most Unix-like operating systems:</p><p><code class="code"> localedef -i de_DE -f ISO-8859-1 de_DE </code></p><p>(repeat for each entry in the above list) </p></li><li class="listitem"><p>
|
||||
Instructions for other operating systems solicited.
|
||||
</p></li></ul></div></li></ul></div></dd></dl></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bugs.html">Prev</a> </td><td align="center"><a accesskey="u" href="intro.html">Up</a></td><td align="right"> <a accesskey="n" href="configure.html">Next</a></td></tr><tr><td align="left" valign="top">Bugs </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Configure</td></tr></table></div></body></html>
|
||||
</p></li></ul></div></li></ul></div></dd></dl></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bugs.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="intro.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="configure.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Bugs </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Configure</td></tr></table></div></body></html>
|
||||
|
||||
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@ -1,97 +1,105 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Directory Layout and Source Conventions</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="appendix_contributing.html" title="Appendix A. Contributing"/><link rel="prev" href="appendix_contributing.html" title="Appendix A. Contributing"/><link rel="next" href="source_code_style.html" title="Coding Style"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Directory Layout and Source Conventions</th></tr><tr><td align="left"><a accesskey="p" href="appendix_contributing.html">Prev</a> </td><th width="60%" align="center">Appendix A.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Directory Layout and Source Conventions</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="appendix_contributing.html" title="Appendix A. Contributing"><link rel="prev" href="appendix_contributing.html" title="Appendix A. Contributing"><link rel="next" href="source_code_style.html" title="Coding Style"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Directory Layout and Source Conventions</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_contributing.html">Prev</a> </td><th width="60%" align="center">Appendix A.
|
||||
Contributing
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="source_code_style.html">Next</a></td></tr></table><hr/></div><div class="section" title="Directory Layout and Source Conventions"><div class="titlepage"><div><div><h2 class="title"><a id="contrib.organization"/>Directory Layout and Source Conventions</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="source_code_style.html">Next</a></td></tr></table><hr></div><div class="section" title="Directory Layout and Source Conventions"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="contrib.organization"></a>Directory Layout and Source Conventions</h2></div></div></div><p>
|
||||
The unpacked source directory of libstdc++ contains the files
|
||||
needed to create the GNU C++ Library.
|
||||
</p><div class="literallayout"><p><br/>
|
||||
It has subdirectories:<br/>
|
||||
<br/>
|
||||
doc<br/>
|
||||
Files in HTML and text format that document usage, quirks of the<br/>
|
||||
implementation, and contributor checklists.<br/>
|
||||
<br/>
|
||||
include<br/>
|
||||
All header files for the C++ library are within this directory,<br/>
|
||||
modulo specific runtime-related files that are in the libsupc++<br/>
|
||||
directory.<br/>
|
||||
<br/>
|
||||
include/std<br/>
|
||||
Files meant to be found by #include <name> directives in<br/>
|
||||
standard-conforming user programs.<br/>
|
||||
<br/>
|
||||
include/c<br/>
|
||||
Headers intended to directly include standard C headers.<br/>
|
||||
[NB: this can be enabled via --enable-cheaders=c]<br/>
|
||||
<br/>
|
||||
include/c_global<br/>
|
||||
Headers intended to include standard C headers in<br/>
|
||||
the global namespace, and put select names into the std::<br/>
|
||||
namespace. [NB: this is the default, and is the same as<br/>
|
||||
--enable-cheaders=c_global]<br/>
|
||||
<br/>
|
||||
include/c_std<br/>
|
||||
Headers intended to include standard C headers<br/>
|
||||
already in namespace std, and put select names into the std::<br/>
|
||||
namespace. [NB: this is the same as --enable-cheaders=c_std]<br/>
|
||||
<br/>
|
||||
include/bits<br/>
|
||||
Files included by standard headers and by other files in<br/>
|
||||
the bits directory.<br/>
|
||||
<br/>
|
||||
include/backward<br/>
|
||||
Headers provided for backward compatibility, such as <iostream.h>.<br/>
|
||||
They are not used in this library.<br/>
|
||||
<br/>
|
||||
include/ext<br/>
|
||||
Headers that define extensions to the standard library. No<br/>
|
||||
standard header refers to any of them.<br/>
|
||||
<br/>
|
||||
scripts<br/>
|
||||
Scripts that are used during the configure, build, make, or test<br/>
|
||||
process.<br/>
|
||||
<br/>
|
||||
src<br/>
|
||||
Files that are used in constructing the library, but are not<br/>
|
||||
installed.<br/>
|
||||
<br/>
|
||||
testsuites/[backward, demangle, ext, performance, thread, 17_* to 30_*]<br/>
|
||||
Test programs are here, and may be used to begin to exercise the<br/>
|
||||
library. Support for "make check" and "make check-install" is<br/>
|
||||
complete, and runs through all the subdirectories here when this<br/>
|
||||
command is issued from the build directory. Please note that<br/>
|
||||
"make check" requires DejaGNU 1.4 or later to be installed. Please<br/>
|
||||
note that "make check-script" calls the script mkcheck, which<br/>
|
||||
requires bash, and which may need the paths to bash adjusted to<br/>
|
||||
work properly, as /bin/bash is assumed.<br/>
|
||||
<br/>
|
||||
Other subdirectories contain variant versions of certain files<br/>
|
||||
that are meant to be copied or linked by the configure script.<br/>
|
||||
Currently these are:<br/>
|
||||
<br/>
|
||||
config/abi<br/>
|
||||
config/cpu<br/>
|
||||
config/io<br/>
|
||||
config/locale<br/>
|
||||
config/os<br/>
|
||||
<br/>
|
||||
In addition, a subdirectory holds the convenience library libsupc++.<br/>
|
||||
<br/>
|
||||
libsupc++<br/>
|
||||
Contains the runtime library for C++, including exception<br/>
|
||||
handling and memory allocation and deallocation, RTTI, terminate<br/>
|
||||
handlers, etc.<br/>
|
||||
<br/>
|
||||
Note that glibc also has a bits/ subdirectory. We will either<br/>
|
||||
need to be careful not to collide with names in its bits/<br/>
|
||||
directory; or rename bits to (e.g.) cppbits/.<br/>
|
||||
<br/>
|
||||
In files throughout the system, lines marked with an "XXX" indicate<br/>
|
||||
a bug or incompletely-implemented feature. Lines marked "XXX MT"<br/>
|
||||
indicate a place that may require attention for multi-thread safety.<br/>
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="appendix_contributing.html">Prev</a> </td><td align="center"><a accesskey="u" href="appendix_contributing.html">Up</a></td><td align="right"> <a accesskey="n" href="source_code_style.html">Next</a></td></tr><tr><td align="left" valign="top">Appendix A.
|
||||
</p><div class="literallayout"><p><br>
|
||||
It has subdirectories:<br>
|
||||
<br>
|
||||
doc<br>
|
||||
Files in HTML and text format that document usage, quirks of the<br>
|
||||
implementation, and contributor checklists.<br>
|
||||
<br>
|
||||
include<br>
|
||||
All header files for the C++ library are within this directory,<br>
|
||||
modulo specific runtime-related files that are in the libsupc++<br>
|
||||
directory.<br>
|
||||
<br>
|
||||
include/std<br>
|
||||
Files meant to be found by #include <name> directives in<br>
|
||||
standard-conforming user programs.<br>
|
||||
<br>
|
||||
include/c<br>
|
||||
Headers intended to directly include standard C headers.<br>
|
||||
[NB: this can be enabled via --enable-cheaders=c]<br>
|
||||
<br>
|
||||
include/c_global<br>
|
||||
Headers intended to include standard C headers in<br>
|
||||
the global namespace, and put select names into the std::<br>
|
||||
namespace. [NB: this is the default, and is the same as<br>
|
||||
--enable-cheaders=c_global]<br>
|
||||
<br>
|
||||
include/c_std<br>
|
||||
Headers intended to include standard C headers<br>
|
||||
already in namespace std, and put select names into the std::<br>
|
||||
namespace. [NB: this is the same as --enable-cheaders=c_std]<br>
|
||||
<br>
|
||||
include/bits<br>
|
||||
Files included by standard headers and by other files in<br>
|
||||
the bits directory.<br>
|
||||
<br>
|
||||
include/backward<br>
|
||||
Headers provided for backward compatibility, such as <iostream.h>.<br>
|
||||
They are not used in this library.<br>
|
||||
<br>
|
||||
include/ext<br>
|
||||
Headers that define extensions to the standard library. No<br>
|
||||
standard header refers to any of them.<br>
|
||||
<br>
|
||||
scripts<br>
|
||||
Scripts that are used during the configure, build, make, or test<br>
|
||||
process.<br>
|
||||
<br>
|
||||
src<br>
|
||||
Files that are used in constructing the library, but are not<br>
|
||||
installed.<br>
|
||||
<br>
|
||||
testsuites/[backward, demangle, ext, performance, thread, 17_* to 30_*]<br>
|
||||
Test programs are here, and may be used to begin to exercise the<br>
|
||||
library. Support for "make check" and "make check-install" is<br>
|
||||
complete, and runs through all the subdirectories here when this<br>
|
||||
command is issued from the build directory. Please note that<br>
|
||||
"make check" requires DejaGNU 1.4 or later to be installed. Please<br>
|
||||
note that "make check-script" calls the script mkcheck, which<br>
|
||||
requires bash, and which may need the paths to bash adjusted to<br>
|
||||
work properly, as /bin/bash is assumed.<br>
|
||||
<br>
|
||||
Other subdirectories contain variant versions of certain files<br>
|
||||
that are meant to be copied or linked by the configure script.<br>
|
||||
Currently these are:<br>
|
||||
<br>
|
||||
config/abi<br>
|
||||
config/cpu<br>
|
||||
config/io<br>
|
||||
config/locale<br>
|
||||
config/os<br>
|
||||
<br>
|
||||
In addition, a subdirectory holds the convenience library libsupc++.<br>
|
||||
<br>
|
||||
libsupc++<br>
|
||||
Contains the runtime library for C++, including exception<br>
|
||||
handling and memory allocation and deallocation, RTTI, terminate<br>
|
||||
handlers, etc.<br>
|
||||
<br>
|
||||
Note that glibc also has a bits/ subdirectory. We will either<br>
|
||||
need to be careful not to collide with names in its bits/<br>
|
||||
directory; or rename bits to (e.g.) cppbits/.<br>
|
||||
<br>
|
||||
In files throughout the system, lines marked with an "XXX" indicate<br>
|
||||
a bug or incompletely-implemented feature. Lines marked "XXX MT"<br>
|
||||
indicate a place that may require attention for multi-thread safety.<br>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_contributing.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_contributing.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="source_code_style.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix A.
|
||||
Contributing
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Coding Style</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Coding Style</td></tr></table></div></body></html>
|
||||
|
||||
File diff suppressed because one or more lines are too long
@ -1,15 +1,23 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Stream Buffers</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="io.html" title="Chapter 13. Input and Output"/><link rel="prev" href="io.html" title="Chapter 13. Input and Output"/><link rel="next" href="stringstreams.html" title="Memory Based Streams"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Stream Buffers</th></tr><tr><td align="left"><a accesskey="p" href="io.html">Prev</a> </td><th width="60%" align="center">Chapter 13.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Stream Buffers</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="io.html" title="Chapter 13. Input and Output"><link rel="prev" href="io.html" title="Chapter 13. Input and Output"><link rel="next" href="stringstreams.html" title="Memory Based Streams"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Stream Buffers</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="io.html">Prev</a> </td><th width="60%" align="center">Chapter 13.
|
||||
Input and Output
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="stringstreams.html">Next</a></td></tr></table><hr/></div><div class="section" title="Stream Buffers"><div class="titlepage"><div><div><h2 class="title"><a id="std.io.streambufs"/>Stream Buffers</h2></div></div></div><div class="section" title="Derived streambuf Classes"><div class="titlepage"><div><div><h3 class="title"><a id="io.streambuf.derived"/>Derived streambuf Classes</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="stringstreams.html">Next</a></td></tr></table><hr></div><div class="section" title="Stream Buffers"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.io.streambufs"></a>Stream Buffers</h2></div></div></div><div class="section" title="Derived streambuf Classes"><div class="titlepage"><div><div><h3 class="title"><a name="io.streambuf.derived"></a>Derived streambuf Classes</h3></div></div></div><p>
|
||||
</p><p>Creating your own stream buffers for I/O can be remarkably easy.
|
||||
If you are interested in doing so, we highly recommend two very
|
||||
excellent books:
|
||||
<a class="link" href="http://www.angelikalanger.com/iostreams.html">Standard C++
|
||||
<a class="link" href="http://www.angelikalanger.com/iostreams.html" target="_top">Standard C++
|
||||
IOStreams and Locales</a> by Langer and Kreft, ISBN 0-201-18395-1, and
|
||||
<a class="link" href="http://www.josuttis.com/libbook/">The C++ Standard Library</a>
|
||||
<a class="link" href="http://www.josuttis.com/libbook/" target="_top">The C++ Standard Library</a>
|
||||
by Nicolai Josuttis, ISBN 0-201-37926-0. Both are published by
|
||||
Addison-Wesley, who isn't paying us a cent for saying that, honest.
|
||||
</p><p>Here is a simple example, io/outbuf1, from the Josuttis text. It
|
||||
@ -55,9 +63,9 @@
|
||||
}
|
||||
</pre><p>Try it yourself! More examples can be found in 3.1.x code, in
|
||||
<code class="code">include/ext/*_filebuf.h</code>, and in this article by James Kanze:
|
||||
<a class="link" href="http://kanze.james.neuf.fr/articles/fltrsbf1.html">Filtering
|
||||
<a class="link" href="http://kanze.james.neuf.fr/articles/fltrsbf1.html" target="_top">Filtering
|
||||
Streambufs</a>.
|
||||
</p></div><div class="section" title="Buffering"><div class="titlepage"><div><div><h3 class="title"><a id="io.streambuf.buffering"/>Buffering</h3></div></div></div><p>First, are you sure that you understand buffering? Particularly
|
||||
</p></div><div class="section" title="Buffering"><div class="titlepage"><div><div><h3 class="title"><a name="io.streambuf.buffering"></a>Buffering</h3></div></div></div><p>First, are you sure that you understand buffering? Particularly
|
||||
the fact that C++ may not, in fact, have anything to do with it?
|
||||
</p><p>The rules for buffering can be a little odd, but they aren't any
|
||||
different from those of C. (Maybe that's why they can be a bit
|
||||
@ -131,7 +139,7 @@
|
||||
just those at the language/library level. Kernel buffers, disk
|
||||
buffers, and the like will also have an effect. Inspecting and
|
||||
changing those are system-dependent.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="io.html">Prev</a> </td><td align="center"><a accesskey="u" href="io.html">Up</a></td><td align="right"> <a accesskey="n" href="stringstreams.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 13.
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="io.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="io.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="stringstreams.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 13.
|
||||
Input and Output
|
||||
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Memory Based Streams</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Memory Based Streams</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 7. Strings</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="traits.html" title="Traits"/><link rel="next" href="localization.html" title="Chapter 8. Localization"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 7.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 7. Strings</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="traits.html" title="Traits"><link rel="next" href="localization.html" title="Chapter 8. Localization"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 7.
|
||||
Strings
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="traits.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="traits.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="localization.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 7. Strings"><div class="titlepage"><div><div><h2 class="title"><a id="std.strings"/>Chapter 7.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="localization.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 7. Strings"><div class="titlepage"><div><div><h2 class="title"><a name="std.strings"></a>Chapter 7.
|
||||
Strings
|
||||
<a id="id510373" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="strings.html#std.strings.string">String Classes</a></span></dt><dd><dl><dt><span class="section"><a href="strings.html#strings.string.simple">Simple Transformations</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.case">Case Sensitivity</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.character_types">Arbitrary Character Types</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.token">Tokenizing</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.shrink">Shrink to Fit</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.Cstring">CString (MFC)</a></span></dt></dl></dd></dl></div><div class="section" title="String Classes"><div class="titlepage"><div><div><h2 class="title"><a id="std.strings.string"/>String Classes</h2></div></div></div><div class="section" title="Simple Transformations"><div class="titlepage"><div><div><h3 class="title"><a id="strings.string.simple"/>Simple Transformations</h3></div></div></div><p>
|
||||
<a class="indexterm" name="id623691"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="strings.html#std.strings.string">String Classes</a></span></dt><dd><dl><dt><span class="section"><a href="strings.html#strings.string.simple">Simple Transformations</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.case">Case Sensitivity</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.character_types">Arbitrary Character Types</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.token">Tokenizing</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.shrink">Shrink to Fit</a></span></dt><dt><span class="section"><a href="strings.html#strings.string.Cstring">CString (MFC)</a></span></dt></dl></dd></dl></div><div class="section" title="String Classes"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.strings.string"></a>String Classes</h2></div></div></div><div class="section" title="Simple Transformations"><div class="titlepage"><div><div><h3 class="title"><a name="strings.string.simple"></a>Simple Transformations</h3></div></div></div><p>
|
||||
Here are Standard, simple, and portable ways to perform common
|
||||
transformations on a <code class="code">string</code> instance, such as
|
||||
"convert to all upper case." The word transformations
|
||||
@ -64,7 +72,7 @@
|
||||
are overloaded names (declared in <code class="code"><cctype></code> and
|
||||
<code class="code"><locale></code>) so the template-arguments for
|
||||
<code class="code">transform<></code> cannot be deduced, as explained in
|
||||
<a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-11/msg00180.html">this
|
||||
<a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-11/msg00180.html" target="_top">this
|
||||
message</a>.
|
||||
|
||||
At minimum, you can write short wrappers like
|
||||
@ -89,9 +97,9 @@
|
||||
str.erase(notwhite+1); </pre><p>Obviously, the calls to <code class="code">find</code> could be inserted directly
|
||||
into the calls to <code class="code">erase</code>, in case your compiler does not
|
||||
optimize named temporaries out of existence.
|
||||
</p></div><div class="section" title="Case Sensitivity"><div class="titlepage"><div><div><h3 class="title"><a id="strings.string.case"/>Case Sensitivity</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Case Sensitivity"><div class="titlepage"><div><div><h3 class="title"><a name="strings.string.case"></a>Case Sensitivity</h3></div></div></div><p>
|
||||
</p><p>The well-known-and-if-it-isn't-well-known-it-ought-to-be
|
||||
<a class="link" href="http://www.gotw.ca/gotw/">Guru of the Week</a>
|
||||
<a class="link" href="http://www.gotw.ca/gotw/" target="_top">Guru of the Week</a>
|
||||
discussions held on Usenet covered this topic in January of 1998.
|
||||
Briefly, the challenge was, <span class="quote">“<span class="quote">write a 'ci_string' class which
|
||||
is identical to the standard 'string' class, but is
|
||||
@ -108,10 +116,10 @@
|
||||
assert( strcmp( s.c_str(), "AbCdE" ) == 0 );
|
||||
assert( strcmp( s.c_str(), "abcde" ) != 0 ); </pre><p>The solution is surprisingly easy. The original answer was
|
||||
posted on Usenet, and a revised version appears in Herb Sutter's
|
||||
book <span class="emphasis"><em>Exceptional C++</em></span> and on his website as <a class="link" href="http://www.gotw.ca/gotw/029.htm">GotW 29</a>.
|
||||
book <span class="emphasis"><em>Exceptional C++</em></span> and on his website as <a class="link" href="http://www.gotw.ca/gotw/029.htm" target="_top">GotW 29</a>.
|
||||
</p><p>See? Told you it was easy!</p><p>
|
||||
<span class="emphasis"><em>Added June 2000:</em></span> The May 2000 issue of C++
|
||||
Report contains a fascinating <a class="link" href="http://lafstern.org/matt/col2_new.pdf"> article</a> by
|
||||
Report contains a fascinating <a class="link" href="http://lafstern.org/matt/col2_new.pdf" target="_top"> article</a> by
|
||||
Matt Austern (yes, <span class="emphasis"><em>the</em></span> Matt Austern) on why
|
||||
case-insensitive comparisons are not as easy as they seem, and
|
||||
why creating a class is the <span class="emphasis"><em>wrong</em></span> way to go
|
||||
@ -123,10 +131,10 @@
|
||||
that nobody ever called me on it...) The GotW question and answer
|
||||
remain useful instructional tools, however.
|
||||
</p><p><span class="emphasis"><em>Added September 2000:</em></span> James Kanze provided a link to a
|
||||
<a class="link" href="http://www.unicode.org/reports/tr21/tr21-5.html">Unicode
|
||||
<a class="link" href="http://www.unicode.org/reports/tr21/tr21-5.html" target="_top">Unicode
|
||||
Technical Report discussing case handling</a>, which provides some
|
||||
very good information.
|
||||
</p></div><div class="section" title="Arbitrary Character Types"><div class="titlepage"><div><div><h3 class="title"><a id="strings.string.character_types"/>Arbitrary Character Types</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Arbitrary Character Types"><div class="titlepage"><div><div><h3 class="title"><a name="strings.string.character_types"></a>Arbitrary Character Types</h3></div></div></div><p>
|
||||
</p><p>The <code class="code">std::basic_string</code> is tantalizingly general, in that
|
||||
it is parameterized on the type of the characters which it holds.
|
||||
In theory, you could whip up a Unicode character class and instantiate
|
||||
@ -169,18 +177,18 @@
|
||||
works and can be specialized even for <code class="code">int</code> and other
|
||||
built-in types.
|
||||
</p><p>If you want to use your own special character class, then you have
|
||||
<a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-08/msg00163.html">a lot
|
||||
<a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-08/msg00163.html" target="_top">a lot
|
||||
of work to do</a>, especially if you with to use i18n features
|
||||
(facets require traits information but don't have a traits argument).
|
||||
</p><p>Another example of how to specialize char_traits was given <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-08/msg00260.html">on the
|
||||
</p><p>Another example of how to specialize char_traits was given <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-08/msg00260.html" target="_top">on the
|
||||
mailing list</a> and at a later date was put into the file <code class="code">
|
||||
include/ext/pod_char_traits.h</code>. We agree
|
||||
that the way it's used with basic_string (scroll down to main())
|
||||
doesn't look nice, but that's because <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-08/msg00236.html">the
|
||||
nice-looking first attempt</a> turned out to <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-08/msg00242.html">not
|
||||
doesn't look nice, but that's because <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-08/msg00236.html" target="_top">the
|
||||
nice-looking first attempt</a> turned out to <a class="link" href="http://gcc.gnu.org/ml/libstdc++/2002-08/msg00242.html" target="_top">not
|
||||
be conforming C++</a>, due to the rule that CharT must be a POD.
|
||||
(See how tricky this is?)
|
||||
</p></div><div class="section" title="Tokenizing"><div class="titlepage"><div><div><h3 class="title"><a id="strings.string.token"/>Tokenizing</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Tokenizing"><div class="titlepage"><div><div><h3 class="title"><a name="strings.string.token"></a>Tokenizing</h3></div></div></div><p>
|
||||
</p><p>The Standard C (and C++) function <code class="code">strtok()</code> leaves a lot to
|
||||
be desired in terms of user-friendliness. It's unintuitive, it
|
||||
destroys the character string on which it operates, and it requires
|
||||
@ -256,7 +264,7 @@ stringtok(Container &container, string const &in,
|
||||
tokenizing as well. Build an istringstream from the input text,
|
||||
and then use std::getline with varying delimiters (the three-argument
|
||||
signature) to extract tokens into a string.
|
||||
</p></div><div class="section" title="Shrink to Fit"><div class="titlepage"><div><div><h3 class="title"><a id="strings.string.shrink"/>Shrink to Fit</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Shrink to Fit"><div class="titlepage"><div><div><h3 class="title"><a name="strings.string.shrink"></a>Shrink to Fit</h3></div></div></div><p>
|
||||
</p><p>From GCC 3.4 calling <code class="code">s.reserve(res)</code> on a
|
||||
<code class="code">string s</code> with <code class="code">res < s.capacity()</code> will
|
||||
reduce the string's capacity to <code class="code">std::max(s.size(), res)</code>.
|
||||
@ -272,7 +280,7 @@ stringtok(Container &container, string const &in,
|
||||
</p><p>In <a class="link" href="status.html#status.iso.2011" title="C++ 2011">C++11</a> mode you can call
|
||||
<code class="code">s.shrink_to_fit()</code> to achieve the same effect as
|
||||
<code class="code">s.reserve(s.size())</code>.
|
||||
</p></div><div class="section" title="CString (MFC)"><div class="titlepage"><div><div><h3 class="title"><a id="strings.string.Cstring"/>CString (MFC)</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="CString (MFC)"><div class="titlepage"><div><div><h3 class="title"><a name="strings.string.Cstring"></a>CString (MFC)</h3></div></div></div><p>
|
||||
</p><p>A common lament seen in various newsgroups deals with the Standard
|
||||
string class as opposed to the Microsoft Foundation Class called
|
||||
CString. Often programmers realize that a standard portable
|
||||
@ -280,9 +288,9 @@ stringtok(Container &container, string const &in,
|
||||
their application from a Win32 platform, they discover that they
|
||||
are relying on special functions offered by the CString class.
|
||||
</p><p>Things are not as bad as they seem. In
|
||||
<a class="link" href="http://gcc.gnu.org/ml/gcc/1999-04n/msg00236.html">this
|
||||
<a class="link" href="http://gcc.gnu.org/ml/gcc/1999-04n/msg00236.html" target="_top">this
|
||||
message</a>, Joe Buck points out a few very important things:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>The Standard <code class="code">string</code> supports all the operations
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>The Standard <code class="code">string</code> supports all the operations
|
||||
that CString does, with three exceptions.
|
||||
</p></li><li class="listitem"><p>Two of those exceptions (whitespace trimming and case
|
||||
conversion) are trivial to implement. In fact, we do so
|
||||
@ -340,7 +348,7 @@ stringtok(Container &container, string const &in,
|
||||
performance is O(n).
|
||||
</pre><p>Joe Buck also pointed out some other things to keep in mind when
|
||||
comparing CString and the Standard string class:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>CString permits access to its internal representation; coders
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>CString permits access to its internal representation; coders
|
||||
who exploited that may have problems moving to <code class="code">string</code>.
|
||||
</p></li><li class="listitem"><p>Microsoft ships the source to CString (in the files
|
||||
MFC\SRC\Str{core,ex}.cpp), so you could fix the allocation
|
||||
@ -360,7 +368,7 @@ stringtok(Container &container, string const &in,
|
||||
libstdc++ string, the SGI string, and the SGI rope, and this
|
||||
is all before any allocator or traits customizations! (More
|
||||
choices than you can shake a stick at -- want fries with that?)
|
||||
</p></li></ul></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="traits.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="localization.html">Next</a></td></tr><tr><td align="left" valign="top">Traits </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 8.
|
||||
</p></li></ul></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="traits.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="localization.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Traits </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 8.
|
||||
Localization
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Memory Based Streams</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="io.html" title="Chapter 13. Input and Output"/><link rel="prev" href="streambufs.html" title="Stream Buffers"/><link rel="next" href="fstreams.html" title="File Based Streams"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Memory Based Streams</th></tr><tr><td align="left"><a accesskey="p" href="streambufs.html">Prev</a> </td><th width="60%" align="center">Chapter 13.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Memory Based Streams</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="io.html" title="Chapter 13. Input and Output"><link rel="prev" href="streambufs.html" title="Stream Buffers"><link rel="next" href="fstreams.html" title="File Based Streams"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Memory Based Streams</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="streambufs.html">Prev</a> </td><th width="60%" align="center">Chapter 13.
|
||||
Input and Output
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="fstreams.html">Next</a></td></tr></table><hr/></div><div class="section" title="Memory Based Streams"><div class="titlepage"><div><div><h2 class="title"><a id="std.io.memstreams"/>Memory Based Streams</h2></div></div></div><div class="section" title="Compatibility With strstream"><div class="titlepage"><div><div><h3 class="title"><a id="std.io.memstreams.compat"/>Compatibility With strstream</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="fstreams.html">Next</a></td></tr></table><hr></div><div class="section" title="Memory Based Streams"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.io.memstreams"></a>Memory Based Streams</h2></div></div></div><div class="section" title="Compatibility With strstream"><div class="titlepage"><div><div><h3 class="title"><a name="std.io.memstreams.compat"></a>Compatibility With strstream</h3></div></div></div><p>
|
||||
</p><p>Stringstreams (defined in the header <code class="code"><sstream></code>)
|
||||
are in this author's opinion one of the coolest things since
|
||||
sliced time. An example of their use is in the Received Wisdom
|
||||
@ -34,4 +42,4 @@
|
||||
memory yourself. The strstreams have been officially deprecated,
|
||||
which means that 1) future revisions of the C++ Standard won't
|
||||
support them, and 2) if you use them, people will laugh at you.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="streambufs.html">Prev</a> </td><td align="center"><a accesskey="u" href="io.html">Up</a></td><td align="right"> <a accesskey="n" href="fstreams.html">Next</a></td></tr><tr><td align="left" valign="top">Stream Buffers </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> File Based Streams</td></tr></table></div></body></html>
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="streambufs.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="io.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="fstreams.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Stream Buffers </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> File Based Streams</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,14 +1,22 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 4. Support</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="prev" href="bk01pt02.html" title="Part II. Standard Contents"/><link rel="next" href="dynamic_memory.html" title="Dynamic Memory"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 4.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 4. Support</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="prev" href="bk01pt02.html" title="Part II. Standard Contents"><link rel="next" href="dynamic_memory.html" title="Dynamic Memory"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 4.
|
||||
Support
|
||||
|
||||
</th></tr><tr><td align="left"><a accesskey="p" href="bk01pt02.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt02.html">Prev</a> </td><th width="60%" align="center">Part II.
|
||||
Standard Contents
|
||||
</th><td align="right"> <a accesskey="n" href="dynamic_memory.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 4. Support"><div class="titlepage"><div><div><h2 class="title"><a id="std.support"/>Chapter 4.
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="dynamic_memory.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 4. Support"><div class="titlepage"><div><div><h2 class="title"><a name="std.support"></a>Chapter 4.
|
||||
Support
|
||||
<a id="id494680" class="indexterm"/>
|
||||
</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="support.html#std.support.types">Types</a></span></dt><dd><dl><dt><span class="section"><a href="support.html#std.support.types.fundamental">Fundamental Types</a></span></dt><dt><span class="section"><a href="support.html#std.support.types.numeric_limits">Numeric Properties</a></span></dt><dt><span class="section"><a href="support.html#std.support.types.null">NULL</a></span></dt></dl></dd><dt><span class="section"><a href="dynamic_memory.html">Dynamic Memory</a></span></dt><dt><span class="section"><a href="termination.html">Termination</a></span></dt><dd><dl><dt><span class="section"><a href="termination.html#support.termination.handlers">Termination Handlers</a></span></dt><dt><span class="section"><a href="termination.html#support.termination.verbose">Verbose Terminate Handler</a></span></dt></dl></dd></dl></div><p>
|
||||
<a class="indexterm" name="id607999"></a>
|
||||
</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="support.html#std.support.types">Types</a></span></dt><dd><dl><dt><span class="section"><a href="support.html#std.support.types.fundamental">Fundamental Types</a></span></dt><dt><span class="section"><a href="support.html#std.support.types.numeric_limits">Numeric Properties</a></span></dt><dt><span class="section"><a href="support.html#std.support.types.null">NULL</a></span></dt></dl></dd><dt><span class="section"><a href="dynamic_memory.html">Dynamic Memory</a></span></dt><dt><span class="section"><a href="termination.html">Termination</a></span></dt><dd><dl><dt><span class="section"><a href="termination.html#support.termination.handlers">Termination Handlers</a></span></dt><dt><span class="section"><a href="termination.html#support.termination.verbose">Verbose Terminate Handler</a></span></dt></dl></dd></dl></div><p>
|
||||
This part deals with the functions called and objects created
|
||||
automatically during the course of a program's existence.
|
||||
</p><p>
|
||||
@ -16,9 +24,9 @@
|
||||
need to get your own copy from your nation's member body; see our
|
||||
homepage for help), we can mention a couple of changes in what
|
||||
kind of support a C++ program gets from the Standard Library.
|
||||
</p><div class="section" title="Types"><div class="titlepage"><div><div><h2 class="title"><a id="std.support.types"/>Types</h2></div></div></div><div class="section" title="Fundamental Types"><div class="titlepage"><div><div><h3 class="title"><a id="std.support.types.fundamental"/>Fundamental Types</h3></div></div></div><p>
|
||||
</p><div class="section" title="Types"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.support.types"></a>Types</h2></div></div></div><div class="section" title="Fundamental Types"><div class="titlepage"><div><div><h3 class="title"><a name="std.support.types.fundamental"></a>Fundamental Types</h3></div></div></div><p>
|
||||
C++ has the following builtin types:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
char
|
||||
</p></li><li class="listitem"><p>
|
||||
signed char
|
||||
@ -53,12 +61,12 @@
|
||||
</p><p>
|
||||
Specializing parts of the library on these types is prohibited:
|
||||
instead, use a POD.
|
||||
</p></div><div class="section" title="Numeric Properties"><div class="titlepage"><div><div><h3 class="title"><a id="std.support.types.numeric_limits"/>Numeric Properties</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Numeric Properties"><div class="titlepage"><div><div><h3 class="title"><a name="std.support.types.numeric_limits"></a>Numeric Properties</h3></div></div></div><p>
|
||||
The header <code class="filename">limits</code> defines
|
||||
traits classes to give access to various implementation
|
||||
defined-aspects of the fundamental types. The traits classes --
|
||||
fourteen in total -- are all specializations of the template class
|
||||
<code class="classname">numeric_limits</code>, documented <a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00593.html">here</a>
|
||||
<code class="classname">numeric_limits</code>, documented <a class="link" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00593.html" target="_top">here</a>
|
||||
and defined as follows:
|
||||
</p><pre class="programlisting">
|
||||
template<typename T>
|
||||
@ -99,7 +107,7 @@
|
||||
static const bool tinyness_before;
|
||||
static const float_round_style round_style;
|
||||
};
|
||||
</pre></div><div class="section" title="NULL"><div class="titlepage"><div><div><h3 class="title"><a id="std.support.types.null"/>NULL</h3></div></div></div><p>
|
||||
</pre></div><div class="section" title="NULL"><div class="titlepage"><div><div><h3 class="title"><a name="std.support.types.null"></a>NULL</h3></div></div></div><p>
|
||||
The only change that might affect people is the type of
|
||||
<code class="constant">NULL</code>: while it is required to be a macro,
|
||||
the definition of that macro is <span class="emphasis"><em>not</em></span> allowed
|
||||
@ -116,15 +124,15 @@
|
||||
overloading won't do what you expect. (This is why
|
||||
<span class="command"><strong>g++</strong></span> has a magic extension, so that
|
||||
<code class="constant">NULL</code> is always a pointer.)
|
||||
</p><p>In his book <a class="link" href="http://www.awprofessional.com/titles/0-201-92488-9/"><span class="emphasis"><em>Effective
|
||||
</p><p>In his book <a class="link" href="http://www.awprofessional.com/titles/0-201-92488-9/" target="_top"><span class="emphasis"><em>Effective
|
||||
C++</em></span></a>, Scott Meyers points out that the best way
|
||||
to solve this problem is to not overload on pointer-vs-integer
|
||||
types to begin with. He also offers a way to make your own magic
|
||||
<code class="constant">NULL</code> that will match pointers before it
|
||||
matches integers.
|
||||
</p><p>See
|
||||
<a class="link" href="http://www.awprofessional.com/titles/0-201-31015-5/">the
|
||||
<a class="link" href="http://www.awprofessional.com/titles/0-201-31015-5/" target="_top">the
|
||||
Effective C++ CD example</a>
|
||||
</p></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="bk01pt02.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="dynamic_memory.html">Next</a></td></tr><tr><td align="left" valign="top">Part II.
|
||||
</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="dynamic_memory.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part II.
|
||||
Standard Contents
|
||||
</td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Dynamic Memory</td></tr></table></div></body></html>
|
||||
</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Dynamic Memory</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,9 +1,17 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Termination</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="support.html" title="Chapter 4. Support"/><link rel="prev" href="dynamic_memory.html" title="Dynamic Memory"/><link rel="next" href="diagnostics.html" title="Chapter 5. Diagnostics"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Termination</th></tr><tr><td align="left"><a accesskey="p" href="dynamic_memory.html">Prev</a> </td><th width="60%" align="center">Chapter 4.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Termination</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="support.html" title="Chapter 4. Support"><link rel="prev" href="dynamic_memory.html" title="Dynamic Memory"><link rel="next" href="diagnostics.html" title="Chapter 5. Diagnostics"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Termination</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="dynamic_memory.html">Prev</a> </td><th width="60%" align="center">Chapter 4.
|
||||
Support
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="diagnostics.html">Next</a></td></tr></table><hr/></div><div class="section" title="Termination"><div class="titlepage"><div><div><h2 class="title"><a id="std.support.termination"/>Termination</h2></div></div></div><div class="section" title="Termination Handlers"><div class="titlepage"><div><div><h3 class="title"><a id="support.termination.handlers"/>Termination Handlers</h3></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="diagnostics.html">Next</a></td></tr></table><hr></div><div class="section" title="Termination"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.support.termination"></a>Termination</h2></div></div></div><div class="section" title="Termination Handlers"><div class="titlepage"><div><div><h3 class="title"><a name="support.termination.handlers"></a>Termination Handlers</h3></div></div></div><p>
|
||||
Not many changes here to <code class="filename">cstdlib</code>. You should note that the
|
||||
<code class="function">abort()</code> function does not call the
|
||||
destructors of automatic nor static objects, so if you're
|
||||
@ -15,7 +23,7 @@
|
||||
The good old <code class="function">exit()</code> function can be a bit
|
||||
funky, too, until you look closer. Basically, three points to
|
||||
remember are:
|
||||
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
|
||||
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
|
||||
Static objects are destroyed in reverse order of their creation.
|
||||
</p></li><li class="listitem"><p>
|
||||
Functions registered with <code class="function">atexit()</code> are called in
|
||||
@ -45,7 +53,7 @@
|
||||
functions, and the compiler/library might already be using some of
|
||||
those slots. If you think you may run out, we recommend using
|
||||
the <code class="function">xatexit</code>/<code class="function">xexit</code> combination from <code class="literal">libiberty</code>, which has no such limit.
|
||||
</p></div><div class="section" title="Verbose Terminate Handler"><div class="titlepage"><div><div><h3 class="title"><a id="support.termination.verbose"/>Verbose Terminate Handler</h3></div></div></div><p>
|
||||
</p></div><div class="section" title="Verbose Terminate Handler"><div class="titlepage"><div><div><h3 class="title"><a name="support.termination.verbose"></a>Verbose Terminate Handler</h3></div></div></div><p>
|
||||
If you are having difficulty with uncaught exceptions and want a
|
||||
little bit of help debugging the causes of the core dumps, you can
|
||||
make use of a GNU extension, the verbose terminate handler.
|
||||
@ -118,7 +126,7 @@ int main(int argc)
|
||||
inappropriate location,
|
||||
<code class="function">__verbose_terminate_handler</code> will behave in
|
||||
an unspecified manner.
|
||||
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="dynamic_memory.html">Prev</a> </td><td align="center"><a accesskey="u" href="support.html">Up</a></td><td align="right"> <a accesskey="n" href="diagnostics.html">Next</a></td></tr><tr><td align="left" valign="top">Dynamic Memory </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 5.
|
||||
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="dynamic_memory.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="support.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="diagnostics.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Dynamic Memory </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 5.
|
||||
Diagnostics
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,12 +1,34 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Test</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , test , testsuite , performance , conformance , ABI , exception safety "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"/><link rel="prev" href="internals.html" title="Porting to New Hardware or Operating Systems"/><link rel="next" href="abi.html" title="ABI Policy and Guidelines"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Test</th></tr><tr><td align="left"><a accesskey="p" href="internals.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Test</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
test
|
||||
,
|
||||
testsuite
|
||||
,
|
||||
performance
|
||||
,
|
||||
conformance
|
||||
,
|
||||
ABI
|
||||
,
|
||||
exception safety
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="appendix_porting.html" title="Appendix B. Porting and Maintenance"><link rel="prev" href="internals.html" title="Porting to New Hardware or Operating Systems"><link rel="next" href="abi.html" title="ABI Policy and Guidelines"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Test</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="internals.html">Prev</a> </td><th width="60%" align="center">Appendix B.
|
||||
Porting and Maintenance
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="abi.html">Next</a></td></tr></table><hr/></div><div class="section" title="Test"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.setup.test"/>Test</h2></div></div></div><p>
|
||||
</th><td width="20%" align="right"> <a accesskey="n" href="abi.html">Next</a></td></tr></table><hr></div><div class="section" title="Test"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="manual.intro.setup.test"></a>Test</h2></div></div></div><p>
|
||||
The libstdc++ testsuite includes testing for standard conformance,
|
||||
regressions, ABI, and performance.
|
||||
</p><div class="section" title="Organization"><div class="titlepage"><div><div><h3 class="title"><a id="test.organization"/>Organization</h3></div></div></div><div class="section" title="Directory Layout"><div class="titlepage"><div><div><h4 class="title"><a id="test.organization.layout"/>Directory Layout</h4></div></div></div><p>
|
||||
</p><div class="section" title="Organization"><div class="titlepage"><div><div><h3 class="title"><a name="test.organization"></a>Organization</h3></div></div></div><div class="section" title="Directory Layout"><div class="titlepage"><div><div><h4 class="title"><a name="test.organization.layout"></a>Directory Layout</h4></div></div></div><p>
|
||||
The directory <span class="emphasis"><em>libsrcdir/testsuite</em></span> contains the
|
||||
individual test cases organized in sub-directories corresponding to
|
||||
chapters of the C++ standard (detailed below), the dejagnu test
|
||||
@ -77,11 +99,11 @@ util Files for libtestc++, utilities and testing routines.
|
||||
</pre><p>
|
||||
All new tests should be written with the policy of one test
|
||||
case, one file in mind.
|
||||
</p></div><div class="section" title="Naming Conventions"><div class="titlepage"><div><div><h4 class="title"><a id="test.organization.naming"/>Naming Conventions</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Naming Conventions"><div class="titlepage"><div><div><h4 class="title"><a name="test.organization.naming"></a>Naming Conventions</h4></div></div></div><p>
|
||||
In addition, there are some special names and suffixes that are
|
||||
used within the testsuite to designate particular kinds of
|
||||
tests.
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<span class="emphasis"><em>_xin.cc</em></span>
|
||||
</p><p>
|
||||
This test case expects some kind of interactive input in order
|
||||
@ -131,7 +153,7 @@ cat 27_io/objects/char/3_xin.in | a.out
|
||||
analyze runtime performance, for performance regression testing,
|
||||
or for other optimization related analysis. At the moment, these
|
||||
test cases are not run by default.
|
||||
</p></li></ul></div></div></div><div class="section" title="Running the Testsuite"><div class="titlepage"><div><div><h3 class="title"><a id="test.run"/>Running the Testsuite</h3></div></div></div><div class="section" title="Basic"><div class="titlepage"><div><div><h4 class="title"><a id="test.run.basic"/>Basic</h4></div></div></div><p>
|
||||
</p></li></ul></div></div></div><div class="section" title="Running the Testsuite"><div class="titlepage"><div><div><h3 class="title"><a name="test.run"></a>Running the Testsuite</h3></div></div></div><div class="section" title="Basic"><div class="titlepage"><div><div><h4 class="title"><a name="test.run.basic"></a>Basic</h4></div></div></div><p>
|
||||
You can check the status of the build without installing it
|
||||
using the dejagnu harness, much like the rest of the gcc
|
||||
tools.</p><pre class="programlisting"> make check</pre><p>in the <span class="emphasis"><em>libbuilddir</em></span> directory.</p><p>or</p><pre class="programlisting"> make check-target-libstdc++-v3</pre><p>in the <span class="emphasis"><em>gccbuilddir</em></span> directory.
|
||||
@ -146,12 +168,12 @@ cat 27_io/objects/char/3_xin.in | a.out
|
||||
output, and the executable output (if any).
|
||||
</p><p>
|
||||
Archives of test results for various versions and platforms are
|
||||
available on the GCC website in the <a class="link" href="http://gcc.gnu.org/gcc-4.3/buildstat.html">build
|
||||
available on the GCC website in the <a class="link" href="http://gcc.gnu.org/gcc-4.3/buildstat.html" target="_top">build
|
||||
status</a> section of each individual release, and are also
|
||||
archived on a daily basis on the <a class="link" href="http://gcc.gnu.org/ml/gcc-testresults/current">gcc-testresults</a>
|
||||
archived on a daily basis on the <a class="link" href="http://gcc.gnu.org/ml/gcc-testresults/current" target="_top">gcc-testresults</a>
|
||||
mailing list. Please check either of these places for a similar
|
||||
combination of source version, operating system, and host CPU.
|
||||
</p></div><div class="section" title="Variations"><div class="titlepage"><div><div><h4 class="title"><a id="test.run.variations"/>Variations</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Variations"><div class="titlepage"><div><div><h4 class="title"><a name="test.run.variations"></a>Variations</h4></div></div></div><p>
|
||||
There are several options for running tests, including testing
|
||||
the regression tests, testing a subset of the regression tests,
|
||||
testing the performance tests, testing just compilation, testing
|
||||
@ -222,7 +244,7 @@ runtest --tool libstdc++ --srcdir=/path/to/gcc/libstdc++-v3/testsuite
|
||||
</pre><p>
|
||||
Five files are generated that determine what test files
|
||||
are run. These files are:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<span class="emphasis"><em>testsuite_files</em></span>
|
||||
</p><p>
|
||||
This is a list of all the test cases that will be run. Each
|
||||
@ -277,7 +299,7 @@ runtest --tool libstdc++ --srcdir=/path/to/gcc/libstdc++-v3/testsuite
|
||||
We are interested in any strange failures of the testsuite;
|
||||
please email the main libstdc++ mailing list if you see
|
||||
something odd or have questions.
|
||||
</p></div><div class="section" title="Permutations"><div class="titlepage"><div><div><h4 class="title"><a id="test.run.permutations"/>Permutations</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Permutations"><div class="titlepage"><div><div><h4 class="title"><a name="test.run.permutations"></a>Permutations</h4></div></div></div><p>
|
||||
To run the libstdc++ test suite under the <a class="link" href="debug_mode.html" title="Chapter 17. Debug Mode">debug mode</a>, edit
|
||||
<code class="filename">libstdc++-v3/scripts/testsuite_flags</code> to add the
|
||||
compile-time flag <code class="constant">-D_GLIBCXX_DEBUG</code> to the
|
||||
@ -297,7 +319,7 @@ runtest --tool libstdc++ --srcdir=/path/to/gcc/libstdc++-v3/testsuite
|
||||
Or, just run the testsuites with <code class="constant">CXXFLAGS</code>
|
||||
set to <code class="constant">-D_GLIBCXX_DEBUG</code> or
|
||||
<code class="constant">-D_GLIBCXX_PARALLEL</code>.
|
||||
</p></div></div><div class="section" title="Writing a new test case"><div class="titlepage"><div><div><h3 class="title"><a id="test.new_tests"/>Writing a new test case</h3></div></div></div><p>
|
||||
</p></div></div><div class="section" title="Writing a new test case"><div class="titlepage"><div><div><h3 class="title"><a name="test.new_tests"></a>Writing a new test case</h3></div></div></div><p>
|
||||
The first step in making a new test case is to choose the correct
|
||||
directory and file name, given the organization as previously
|
||||
described.
|
||||
@ -408,7 +430,7 @@ up in the normal.exp file.
|
||||
// { dg-options "-O0" { target *-*-* } }
|
||||
</pre><p>
|
||||
More examples can be found in the libstdc++-v3/testsuite/*/*.cc files.
|
||||
</p></div><div class="section" title="Test Harness and Utilities"><div class="titlepage"><div><div><h3 class="title"><a id="test.harness"/>Test Harness and Utilities</h3></div></div></div><div class="section" title="Dejagnu Harness Details"><div class="titlepage"><div><div><h4 class="title"><a id="test.harness.dejagnu"/>Dejagnu Harness Details</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Test Harness and Utilities"><div class="titlepage"><div><div><h3 class="title"><a name="test.harness"></a>Test Harness and Utilities</h3></div></div></div><div class="section" title="Dejagnu Harness Details"><div class="titlepage"><div><div><h4 class="title"><a name="test.harness.dejagnu"></a>Dejagnu Harness Details</h4></div></div></div><p>
|
||||
Underlying details of testing for conformance and regressions are
|
||||
abstracted via the GNU Dejagnu package. This is similar to the
|
||||
rest of GCC.
|
||||
@ -435,7 +457,7 @@ callbacks loaded from the support library.
|
||||
</p><p>The <code class="code">config</code> directory is searched for any particular "target
|
||||
board" information unique to this library. This is currently unused and sets
|
||||
only default variables.
|
||||
</p></div><div class="section" title="Utilities"><div class="titlepage"><div><div><h4 class="title"><a id="test.harness.utils"/>Utilities</h4></div></div></div><p>
|
||||
</p></div><div class="section" title="Utilities"><div class="titlepage"><div><div><h4 class="title"><a name="test.harness.utils"></a>Utilities</h4></div></div></div><p>
|
||||
</p><p>
|
||||
The testsuite directory also contains some files that implement
|
||||
functionality that is intended to make writing test cases easier,
|
||||
@ -447,7 +469,7 @@ only default variables.
|
||||
during testing.
|
||||
</p><p>
|
||||
These files include the following functionality:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
<span class="emphasis"><em>testsuite_abi.h</em></span>,
|
||||
<span class="emphasis"><em>testsuite_abi.cc</em></span>,
|
||||
<span class="emphasis"><em>testsuite_abi_check.cc</em></span>
|
||||
@ -477,7 +499,7 @@ only default variables.
|
||||
<span class="emphasis"><em>testsuite_hooks.cc</em></span>
|
||||
</p><p>
|
||||
A large number of utilities, including:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>VERIFY</p></li><li class="listitem"><p>set_memory_limits</p></li><li class="listitem"><p>verify_demangle</p></li><li class="listitem"><p>run_tests_wrapped_locale</p></li><li class="listitem"><p>run_tests_wrapped_env</p></li><li class="listitem"><p>try_named_locale</p></li><li class="listitem"><p>try_mkfifo</p></li><li class="listitem"><p>func_callback</p></li><li class="listitem"><p>counter</p></li><li class="listitem"><p>copy_tracker</p></li><li class="listitem"><p>copy_constructor</p></li><li class="listitem"><p>assignment_operator</p></li><li class="listitem"><p>destructor</p></li><li class="listitem"><p>pod_char, pod_int and associated char_traits specializations</p></li></ul></div></li><li class="listitem"><p>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>VERIFY</p></li><li class="listitem"><p>set_memory_limits</p></li><li class="listitem"><p>verify_demangle</p></li><li class="listitem"><p>run_tests_wrapped_locale</p></li><li class="listitem"><p>run_tests_wrapped_env</p></li><li class="listitem"><p>try_named_locale</p></li><li class="listitem"><p>try_mkfifo</p></li><li class="listitem"><p>func_callback</p></li><li class="listitem"><p>counter</p></li><li class="listitem"><p>copy_tracker</p></li><li class="listitem"><p>copy_constructor</p></li><li class="listitem"><p>assignment_operator</p></li><li class="listitem"><p>destructor</p></li><li class="listitem"><p>pod_char, pod_int and associated char_traits specializations</p></li></ul></div></li><li class="listitem"><p>
|
||||
<span class="emphasis"><em>testsuite_io.h</em></span>
|
||||
</p><p>
|
||||
Error, exception, and constraint checking for
|
||||
@ -491,10 +513,10 @@ only default variables.
|
||||
</p><p>
|
||||
A number of class abstractions for performance counters, and
|
||||
reporting functions including:
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>time_counter</p></li><li class="listitem"><p>resource_counter</p></li><li class="listitem"><p>report_performance</p></li></ul></div></li></ul></div></div></div><div class="section" title="Special Topics"><div class="titlepage"><div><div><h3 class="title"><a id="test.special"/>Special Topics</h3></div></div></div><div class="section" title="Qualifying Exception Safety Guarantees"><div class="titlepage"><div><div><h4 class="title"><a id="test.exception.safety"/>
|
||||
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p>time_counter</p></li><li class="listitem"><p>resource_counter</p></li><li class="listitem"><p>report_performance</p></li></ul></div></li></ul></div></div></div><div class="section" title="Special Topics"><div class="titlepage"><div><div><h3 class="title"><a name="test.special"></a>Special Topics</h3></div></div></div><div class="section" title="Qualifying Exception Safety Guarantees"><div class="titlepage"><div><div><h4 class="title"><a name="test.exception.safety"></a>
|
||||
Qualifying Exception Safety Guarantees
|
||||
<a id="id568361" class="indexterm"/>
|
||||
</h4></div></div></div><div class="section" title="Overview"><div class="titlepage"><div><div><h5 class="title"><a id="test.exception.safety.overview"/>Overview</h5></div></div></div><p>
|
||||
<a class="indexterm" name="id681679"></a>
|
||||
</h4></div></div></div><div class="section" title="Overview"><div class="titlepage"><div><div><h5 class="title"><a name="test.exception.safety.overview"></a>Overview</h5></div></div></div><p>
|
||||
Testing is composed of running a particular test sequence,
|
||||
and looking at what happens to the surrounding code when
|
||||
exceptions are thrown. Each test is composed of measuring
|
||||
@ -524,9 +546,9 @@ only default variables.
|
||||
completes without an exception being thrown, assume all
|
||||
potential error paths have been exercised in a sequential
|
||||
manner.
|
||||
</p></div><div class="section" title="Existing tests"><div class="titlepage"><div><div><h5 class="title"><a id="test.exception.safety.status"/>
|
||||
</p></div><div class="section" title="Existing tests"><div class="titlepage"><div><div><h5 class="title"><a name="test.exception.safety.status"></a>
|
||||
Existing tests
|
||||
</h5></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</h5></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Ad Hoc
|
||||
</p><p>
|
||||
For example,
|
||||
@ -563,9 +585,9 @@ as the allocator type.
|
||||
instrumentation to <code class="classname">iterator</code>
|
||||
and <code class="classname">const_iterator</code> types that throw
|
||||
conditionally on iterator operations.
|
||||
</p></li></ul></div></div><div class="section" title="C++11 Requirements Test Sequence Descriptions"><div class="titlepage"><div><div><h5 class="title"><a id="test.exception.safety.containers"/>
|
||||
</p></li></ul></div></div><div class="section" title="C++11 Requirements Test Sequence Descriptions"><div class="titlepage"><div><div><h5 class="title"><a name="test.exception.safety.containers"></a>
|
||||
C++11 Requirements Test Sequence Descriptions
|
||||
</h5></div></div></div><div class="itemizedlist"><ul class="itemizedlist"><li class="listitem"><p>
|
||||
</h5></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
|
||||
Basic
|
||||
</p><p>
|
||||
Basic consistency on exception propagation tests. For
|
||||
@ -636,4 +658,4 @@ C++11 Requirements Test Sequence Descriptions
|
||||
The general form demonstrated in
|
||||
<code class="filename">testsuite/23_containers/list/requirements/exception/propagation_coherent.cc
|
||||
</code>. The instantiating test object is <code class="classname">__gnu_test::propagation_coherent</code> and is detailed in <code class="filename">testsuite/util/exception/safety.h</code>.
|
||||
</p></li></ul></div></div></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="internals.html">Prev</a> </td><td align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td align="right"> <a accesskey="n" href="abi.html">Next</a></td></tr><tr><td align="left" valign="top">Porting to New Hardware or Operating Systems </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> ABI Policy and Guidelines</td></tr></table></div></body></html>
|
||||
</p></li></ul></div></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="internals.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="abi.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Porting to New Hardware or Operating Systems </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> ABI Policy and Guidelines</td></tr></table></div></body></html>
|
||||
|
||||
@ -1,10 +1,18 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Traits</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="utilities.html" title="Chapter 6. Utilities"/><link rel="prev" href="memory.html" title="Memory"/><link rel="next" href="strings.html" title="Chapter 7. Strings"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Traits</th></tr><tr><td align="left"><a accesskey="p" href="memory.html">Prev</a> </td><th width="60%" align="center">Chapter 6.
|
||||
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Traits</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
library
|
||||
"><meta name="keywords" content="
|
||||
ISO C++
|
||||
,
|
||||
runtime
|
||||
,
|
||||
library
|
||||
"><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="utilities.html" title="Chapter 6. Utilities"><link rel="prev" href="memory.html" title="Memory"><link rel="next" href="strings.html" title="Chapter 7. Strings"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Traits</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="memory.html">Prev</a> </td><th width="60%" align="center">Chapter 6.
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||||
Utilities
|
||||
|
||||
</th><td align="right"> <a accesskey="n" href="strings.html">Next</a></td></tr></table><hr/></div><div class="section" title="Traits"><div class="titlepage"><div><div><h2 class="title"><a id="std.util.traits"/>Traits</h2></div></div></div><p>
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||||
</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="memory.html">Prev</a> </td><td align="center"><a accesskey="u" href="utilities.html">Up</a></td><td align="right"> <a accesskey="n" href="strings.html">Next</a></td></tr><tr><td align="left" valign="top">Memory </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Chapter 7.
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||||
</th><td width="20%" align="right"> <a accesskey="n" href="strings.html">Next</a></td></tr></table><hr></div><div class="section" title="Traits"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="std.util.traits"></a>Traits</h2></div></div></div><p>
|
||||
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="memory.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="utilities.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="strings.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Memory </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 7.
|
||||
Strings
|
||||
|
||||
</td></tr></table></div></body></html>
|
||||
|
||||
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