Commit Graph

1401 Commits

Author SHA1 Message Date
Florian Weimer
27bf5e9506 manual: Add pthread_attr_setsigmask_np, pthread_attr_getsigmask_np
And the PTHREAD_ATTR_NO_SIGMASK_NP constant.
2020-06-15 12:18:38 +02:00
Aurélien Aptel
74edc05817 manual/jobs.texi: remove unused var from example code
The do_job_notification() function defines a variable without using
it. Remove it.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-06-03 18:09:45 -04:00
Carlos O'Donell
61af4bbb2a mbstowcs: Document, test, and fix null pointer dst semantics (Bug 25219)
The function mbstowcs, by an XSI extension to POSIX, accepts a null
pointer for the destination wchar_t array.  This API behaviour allows
you to use the function to compute the length of the required wchar_t
array i.e. does the conversion without storing it and returns the
number of wide characters required.

We remove the __write_only__ markup for the first argument because it
is not true since the destination may be a null pointer, and so the
length argument may not apply.  We remove the markup otherwise the new
test case cannot be compiled with -Werror=nonnull.

We add a new test case for mbstowcs which exercises the destination is
a null pointer behaviour which we have now explicitly documented.

The mbsrtowcs and mbsnrtowcs behave similarly, and mbsrtowcs is
documented as doing this in C11, even if the standard doesn't come out
and call out this specific use case.  We add one note to each of
mbsrtowcs and mbsnrtowcs to call out that they support a null pointer
for the destination.

The wcsrtombs function behaves similarly but in the other way around
and allows you to use a null destination pointer to compute how many
bytes you would need to convert the wide character input.  We document
this particular case also, but leave wcsnrtombs as a references to
wcsrtombs, so the reader must still read the details of the semantics
for wcsrtombs.
2020-06-01 12:26:32 -04:00
Girish Joshi
5d5b3bd94c manual: Fix backtraces code example [BZ #10441]
Validation for pointer returned by backtrace_symbols () added.
Type of variables size and i is changed from size_t to int.

Variable size is used to collect the result from backtrace ()
that is an int. i is the loop counter variable so it can be an int.

Since, size_t size is changed to int size, in printf %zd is changed to %d.

Reviewed-by: DJ Delorie <dj@redhat.com>
2020-05-29 10:08:08 -03:00
Florian Weimer
02802fafcf signal: Deprecate additional legacy signal handling functions
This needs a few test adjustments: In some cases, sigignore was
used for convenience (replaced with xsignal with SIG_IGN).  Tests
for the deprecated functions need to disable
-Wdeprecated-declarations, and for the sigmask deprecation,
-Wno-error.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2020-05-25 18:32:28 +02:00
Florian Weimer
5b9b177bf6 manual: Add missing section and node for clockid_t wait functions
Without this, these functions appear under the node Default Thread
Attributes, which is confusing.

Eventually, the documentation should be merged with the (yet to be
documented) standardized functions.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-05-20 15:21:53 +02:00
H.J. Lu
9e38f455a6 x86: Add --enable-cet=permissive
When CET is enabled, it is an error to dlopen a non CET enabled shared
library in CET enabled application.  It may be desirable to make CET
permissive, that is disable CET when dlopening a non CET enabled shared
library.  With the new --enable-cet=permissive configure option, CET is
disabled when dlopening a non CET enabled shared library.

Add DEFAULT_DL_X86_CET_CONTROL to config.h.in:

 /* The default value of x86 CET control.  */
 #define DEFAULT_DL_X86_CET_CONTROL cet_elf_property

which enables CET features based on ELF property note.

--enable-cet=permissive it to

 /* The default value of x86 CET control.  */
 #define DEFAULT_DL_X86_CET_CONTROL cet_permissive

which enables CET features permissively.

Update tst-cet-legacy-5a, tst-cet-legacy-5b, tst-cet-legacy-6a and
tst-cet-legacy-6b to check --enable-cet and --enable-cet=permissive.
2020-05-18 08:38:53 -07:00
Florian Weimer
ad14f4f8db manual: Document the O_NOFOLLOW open flag 2020-05-05 09:23:53 +02:00
Paul E. Murphy
5c7ccc2983 powerpc64le: blacklist broken GCC compilers (e.g GCC 7.5.0)
GCC 7.5.0 (PR94200) will refuse to compile if both -mabi=% and
-mlong-double-128 are passed on the command line.  Surprisingly,
it will work happily if the latter is not.  For the sake of
maintaining status quo, test for and blacklist such compilers.

Tested with a GCC 8.3.1 and GCC 7.5.0 compiler for ppc64le.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2020-04-30 08:52:08 -05:00
Paul E. Murphy
3a0acbdcc5 powerpc64le: bump binutils version requirement to >= 2.26
This is a small step up from 2.25 which brings in support for
rewriting the .gnu.attributes section of libc/libm.so.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2020-04-30 08:52:08 -05:00
Paul E. Murphy
50545f5aa0 powerpc64le: raise GCC requirement to 7.4 for long double transition
Add compiler feature tests to ensure we can build ieee128 long double.
These test for -mabi=ieeelongdouble, -mno-gnu-attribute, and -Wno-psabi.

Likewise, verify some compiler bugs have been addressed.  These aren't
helpful for building glibc, but may cause test failures when testing
the new long double.  See notes below from Raji.

On powerpc64le, some older compiler versions give error for the function
signbit() for 128-bit floating point types.  This is fixed by PR83862
in gcc 8.0 and backported to gcc6 and gcc7.  This patch adds a test
to check compiler version to avoid compiler errors during make check.

Likewise, test for -mno-gnu-attribute support which was

On powerpc64le, a few files are built on IEEE long double mode
(-mabi=ieeelongdouble), whereas most are built on IBM long double mode
(-mabi=ibmlongdouble, the default for -mlong-double-128).  Since binutils
2.31, linking object files with different long double modes causes
errors similar to:

  ld: libc_pic.a(s_isinfl.os) uses IBM long double,
      libc_pic.a(ieee128-qefgcvt.os) uses IEEE long double.
  collect2: error: ld returned 1 exit status
  make[2]: *** [../Makerules:649: libc_pic.os] Error 1

The warnings are fair and correct, but in order for glibc to have
support for both long double modes on powerpc64le, they have to be
ignored.  This can be accomplished with the use of -mno-gnu-attribute
option when building the few files that require IEEE long double mode.

However, -mno-gnu-attribute is not available in GCC 6, the minimum
version required to build glibc, so this patch adds a test for this
feature in powerpc64le builds, and fails early if it's not available.

Co-Authored-By: Rajalakshmi Srinivasaraghavan  <raji@linux.vnet.ibm.com>
Co-Authored-By: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2020-04-30 08:52:08 -05:00
Florian Weimer
2a8682ea3b manual: Fix typos in the fexecve description
Reported by Michael Kerrisk.
2020-04-29 10:15:51 +02:00
Florian Weimer
6771af1123 manual: Document the fexecve function 2020-04-27 11:38:28 +02:00
Adhemerval Zanella
c10dde0d2a Remove __NO_MATH_INLINES
With fenvinline.h removal the flag is not used anymore.

Checked on x86_64-linux-gnu.
2020-04-17 11:40:44 -03:00
Florian Weimer
076f09afba Linux: Remove <sys/sysctl.h> and the sysctl function
Linux 5.5 remove the system call in commit
61a47c1ad3a4dc6882f01ebdc88138ac62d0df03 ("Linux: Remove
<sys/sysctl.h>").  Therefore, the compat function is just a stub that
sets ENOSYS.

Due to SHLIB_COMPAT, new ports will not add the sysctl function anymore
automatically.

x32 already lacks the sysctl function, so an empty sysctl.c file is
used to suppress it.  Otherwise, a new compat symbol would be added.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2020-04-15 17:17:32 +02:00
Joseph Myers
319d2a7b60 Add GRND_INSECURE from Linux 5.6 to sys/random.h
This patch adds the GRND_INSECURE constant from Linux 5.6 to glibc's
sys/random.h.  This is also added to the documentation.  The constant
acts as a no-op for the Hurd implementation (as that doesn't check
whether the flags are known), which is semantically fine, while older
Linux kernels reject unknown flags with an EINVAL error.

Tested for x86_64.
2020-04-09 21:21:16 +00:00
Carlos O'Donell
b8de7980c0 Extended Char Intro: Use getwc in example (Bug 25626)
In the "Extended Char Intro" the example incorrectly uses a function
called wgetc which doesn't exist.  The example is corrected to use
getwc, which is correct for the use in this case.

Reported-by: Toomas Rosin <toomas@rosin.ee>
2020-03-20 17:13:03 -04:00
Girish Joshi
4315f45c93 manual: Fix inconsistent declaration of wcsrchr [BZ #24655]
Reviewed-by: DJ Delorie <dj@redhat.com>
2020-03-13 17:45:04 -04:00
Girish Joshi
f801cf7bb1 manual: Fix wrong declaration of wcschr [BZ #24654] 2020-03-05 09:31:43 +01:00
Girish Joshi
72bcc9ade0 manual: Fix typo in parse_printf_format example [BZ #24638] 2020-03-04 13:20:07 +01:00
Siddhesh Poyarekar
df5919dfeb Update newest tested versions of dependencies in install.texi
Updated versions of gcc, binutils, awk, bison and perl.
2020-02-01 17:16:54 +05:30
Siddhesh Poyarekar
711416872d Add more contributors to the manual 2020-02-01 17:16:54 +05:30
Lucas A. M. Magalhaes
70ba28f7ab Fix tst-pkey.c pkey_alloc return checks and manual
This test was failing in some powerpc systems as it was not checking
for ENOSPC return.

As said on the Linux man-pages and can be observed by the implementation
at mm/mprotect.c in the Linux Kernel source.  The syscall pkey_alloc can
return EINVAL or ENOSPC.  ENOSPC will indicate either that all keys are
in use or that the kernel does not support pkeys.

Reviewed-by: Gabriel F. T. Gomes <gabriel@inconstante.net.br>
2020-01-17 09:05:03 -03:00
Joseph Myers
d614a75396 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Xuelei Zhang
0db8e7b366 aarch64: Add Huawei Kunpeng to tunable cpu list
Kunpeng processer is a 64-bit Arm-compatible CPU released by Huawei,
and we have already signed a copyright assignement with the FSF.

This patch adds its to cpu list, and related macro for IFUNC.

Checked on aarch64-linux-gnu.

Reviewed-by: Szabolcs Nagy <Szabolcs.Nagy@arm.com>
2019-12-19 16:31:04 -03:00
Paul Eggert
ef4e158c73 manual: clarify fopen with the x flag
* manual/stdio.texi (Opening Streams): Say how glibc's
implementation of fopen with "x" follows ISO C11.
2019-12-11 09:40:02 -08:00
Mike Crowe
3ef5e118f2 nptl: Fix niggles with pthread_clockjoin_np
Joseph Myers spotted[1] that 69ca4b54c1 added
pthread_clockjoin_np to sysdeps/nptl/pthread.h but not to its hppa-specific
equivalent sysdeps/unix/sysv/linux/hppa/pthread.h.

Rafal Luzynski spotted[2] typos in the NEWS entry and manual updates too.

Florian Weimer spotted[3] that the clockid parameter was not using a
reserved identifier in pthread.h.

[1] https://sourceware.org/ml/libc-alpha/2019-11/msg00016.html
[2] https://sourceware.org/ml/libc-alpha/2019-11/msg00019.html
[3] https://sourceware.org/ml/libc-alpha/2019-11/msg00022.html

Reviewed-by: Joseph Myers <joseph@codesourcery.com>
Reviewed-by: Rafal Luzynski <digitalfreak@lingonborough.com>
Reviewed-by: Florian Weimer <fw@deneb.enyo.de>
2019-11-04 16:44:49 -03:00
Mike Crowe
69ca4b54c1 nptl: Add pthread_clockjoin_np
Introduce pthread_clockjoin_np as a version of pthread_timedjoin_np that
accepts a clockid_t parameter to indicate which clock the timeout should be
measured against. This mirrors the recently-added POSIX-proposed "clock"
wait functions.

Checked on x86_64-linux-gnu.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-11-01 11:23:43 -03:00
Mike Crowe
893bbdd007 manual: Add documentation for pthread_tryjoin_np and pthread_timedjoin_np
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-11-01 11:23:43 -03:00
Zack Weinberg
62193c4a3a Revise the documentation of simple calendar time.
This is a thorough revision of all the material relating to the
functions time, stime, gettimeofday, settimeofday, clock_gettime,
clock_getres, clock_settime, and difftime, spilling over into the
discussion of time-related data types (which now get their own
section) and touching the adjtime family as well (which deserves its
own thorough revision, but I'd have to do a bunch of research first).

Substantive changes are:

 * Document clock_gettime, clock_getres, and clock_settime.  (Only
   CLOCK_REALTIME and CLOCK_MONOTONIC are documented; the others are
   either a bit too Linux-specific, or have more to do with measuring
   CPU/processor time.  That section _also_ deserves its own thorough
   revision but again I'd have to do a bunch of research first.)

 * Present gettimeofday, settimeofday, and struct timeval as obsolete
   relative to clock_*.

 * Remove the documentation of struct timezone.  Matching POSIX,
   say that the type of the second argument to gettimeofday and
   settimeofday is [const] void *.

 * Clarify ISO C and POSIX's requirements on time_t.  Clarify the
   circumstances under which difftime is equivalent to simple
   subtraction.

 * Consolidate documentation of most of the time-related data types
   into a new section "Time Types," right after "Time Basics."  (The
   exceptions are struct tm, which stays in "Broken-down Time," and
   struct times, which stays in "Processor And CPU Time."

 * The "Elapsed Time" section is now called "Calculating Elapsed Time"
   and includes only difftime and the discussion of how to compute
   timeval differences by hand.

 * Fold the "Simple Calendar Time," "High Resolution Calendar," and
   "High Accuracy Clock" sections together into two new sections titled
   "Getting the Time" and "Setting and Adjusting the Time."
2019-10-30 17:11:10 -03:00
Florian Weimer
7f0e1933f0 manual: Remove warning in the documentation of the abort function
The warning is confusing to those who do not understand the context,
and the warning is easy to misunderstand:

A reader needs to know that it was written by someone who is generally
skeptical of government influence and control, otherwise it reads as
an affirmation of the U.S. government's role as the ultimate editor of
the manual.  This is precisely the opposite of what the warning
intends to convey.  (Reportedly, it criticizes that several
U.S. administrations have tried to restrict the medical advice that
U.S.-funded health care workers can provide abroad, considering that
censorship.)

The warning is also misleading on a technical level.  A reader who
makes the connection to pregnancy termination will get the wrong
impression that calling the abort function will terminate subprocesses
of the current process, but this is not what generally happens.

Finally, for both GNU and the FSF, it is inappropriate to use female
reproductive health as mere joke material, since these organizations
do not concern themselves with such issues otherwise, and the warning
is purportedly about something else entirely.

This reinstates commit 340d9652b9
("manual/startup.texi (Aborting a Program): Remove inappropriate
joke."), effectively reverting the revert in commit
ffa81c22a3 ("Revert:").

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2019-10-11 20:15:24 +02:00
Paul Eggert
5a82c74822 Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:

sed -ri '
  s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
  s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
  $(find $(git ls-files) -prune -type f \
      ! -name '*.po' \
      ! -name 'ChangeLog*' \
      ! -path COPYING ! -path COPYING.LIB \
      ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
      ! -path manual/texinfo.tex ! -path scripts/config.guess \
      ! -path scripts/config.sub ! -path scripts/install-sh \
      ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
      ! -path INSTALL ! -path  locale/programs/charmap-kw.h \
      ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
      ! '(' -name configure \
            -execdir test -f configure.ac -o -f configure.in ';' ')' \
      ! '(' -name preconfigure \
            -execdir test -f preconfigure.ac ';' ')' \
      -print)

and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:

  chmod a+x sysdeps/unix/sysv/linux/riscv/configure
  # Omit irrelevant whitespace and comment-only changes,
  # perhaps from a slightly-different Autoconf version.
  git checkout -f \
    sysdeps/csky/configure \
    sysdeps/hppa/configure \
    sysdeps/riscv/configure \
    sysdeps/unix/sysv/linux/csky/configure
  # Omit changes that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
  git checkout -f \
    sysdeps/powerpc/powerpc64/ppc-mcount.S \
    sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
  # Omit change that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
  git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 02:43:31 -07:00
Paul Eggert
ab74d59f65 Correct the spelling of more contributors
Correct the spellings of Rafael Ávila de Espíndola,
Uroš Bizjak, Alexandra Hájková, and Rafał Lużyński.
2019-08-29 02:50:04 -07:00
Paul Eggert
1bced8cadc Don't put non-ASCII into installed headers
Move non-ASCII contributor names from installed headers
into contrib.texi when possible, and when it's not (the
copyright notice in sysdeps/unix/sysv/linux/mips/sys/user.h)
go back to ASCIIfied names.  Problem reported by Joseph Myers in:
https://www.sourceware.org/ml/libc-alpha/2019-08/msg00646.html
2019-08-23 14:19:40 -07:00
Paul Eggert
e6855a3bdf Fix spellings of contributor names in comments and doc 2019-08-23 13:11:05 -07:00
Joseph Myers
c737ef0d64 Document strftime %Ob and %OB as C2X features.
C2X standardizes strftime %Ob and %OB support.  This patch updates the
glibc manual to say these are C2X features, while noting that the
details of what is the alternative form of a month name are not
specified in C2X.

Note: C2X seems unclear to me about whether %h being equivalent to %b
means %Oh is thereby allowed and equivalent to %Ob; I've asked WG14.

Tested with "make info" and "make pdf".

	* manual/time.texi (strftime): Document %Ob and %OB as C2X
	features.
2019-08-22 12:38:40 +00:00
Carlos O'Donell
4b7c74179c nss: Make nsswitch.conf more distribution friendly.
The current default nsswitch.conf file provided by glibc is not very
distribution friendly. The file contains some minimal directives that no
real distribution uses. This update aims to provide a rich set of
comments which are useful for all distributions, and a broader set of
service defines which should work for all distributions.

Tested defaults on x86_64 and they work. The nsswitch.conf file more
closely matches what we have in Fedora now, and I'll adjust Fedora to
use this version with minor changes to enable Fedora-specific service
providers.

v2
- Add missing databases to manual.
- Add link to manual from default nsswitch.conf.
- Sort nsswitch.conf according to most used database first.

v3
- Only mention implemented services in 'NSS Basics.'
- Mention 'automount' in 'Services in the NSS configuration.'
- Sort services in alphabetical order.

v4
- Project name is 'Samba'.

v5
- Fix typo in manual/nss.texi.

v6
- Fix another typo in manual/nss.texi. Ran spell checker this time.
2019-08-19 09:56:59 -04:00
Joseph Myers
42760d7646 Make totalorder and totalordermag functions take pointer arguments.
The resolution of C floating-point Clarification Request 25
<http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2397.htm#dr_25> is
that the totalorder and totalordermag functions should take pointer
arguments, and this has been adopted in C2X (with const added; note
that the integration of this change into C2X is present in the C
standard git repository but postdates the most recent public PDF
draft).

This patch updates glibc accordingly.  As a defect resolution, the API
is changed unconditionally rather than supporting any sort of TS
18661-1 mode for compilation with the old version of the API.  There
are compat symbols for existing binaries that pass floating-point
arguments directly.  As a consequence of changing to pointer
arguments, there are no longer type-generic macros in tgmath.h for
these functions.

Because of the fairly complicated logic for creating libm function
aliases and determining the set of aliases to create in a given glibc
configuration, rather than duplicating all that in individual source
files to create the versioned and compat symbols, the source files for
the various versions of totalorder functions are set up to redefine
weak_alias before using libm_alias_* macros to create the symbols
required.  In turn, this requires creating a separate alias for each
symbol version pointing to the same implementation (see binutils bug
<https://sourceware.org/bugzilla/show_bug.cgi?id=23840>), which is
done automatically using __COUNTER__.  (As I noted in
<https://sourceware.org/ml/libc-alpha/2018-10/msg00631.html>, it might
well make sense for glibc's symbol versioning macros to do that alias
creation with __COUNTER__ themselves, which would somewhat simplify
the logic in the totalorder source files.)

It is of course desirable to test the compat symbols.  I did this with
the generic libm-test machinery, but didn't wish to duplicate the
actual tables of test inputs and outputs, and thought it risky to
attempt to have a single object file refer to both default and compat
versions of the same function in order to test them together.  Thus, I
created libm-test-compat_totalorder.inc and
libm-test-compat_totalordermag.inc which include the generated .c
files (with the processed version of those tables of inputs) from the
non-compat tests, and added appropriate dependencies.  I think this
provides sufficient test coverage for the compat symbols without also
needing to make the special ldbl-96 and ldbl-128ibm tests (of
peculiarities relating to the representations of those formats that
can't be covered in the generic tests) run for the compat symbols.

Tests of compat symbols need to be internal tests, meaning _ISOMAC is
not defined.  Making some libm-test tests into internal tests showed
up two other issues.  GCC diagnoses duplicate macro definitions of
__STDC_* macros, including __STDC_WANT_IEC_60559_TYPES_EXT__; I added
an appropriate conditional and filed
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91451> for this issue.
On ia64, include/setjmp.h ends up getting included indirectly from
libm-symbols.h, resulting in conflicting definitions of the STR macro
(also defined in libm-test-driver.c); I renamed the macros in
include/setjmp.h.  (It's arguable that we should have common internal
headers used everywhere for stringizing and concatenation macros.)

Tested for x86_64 and x86, and with build-many-glibcs.py.

	* math/bits/mathcalls.h
	[__GLIBC_USE (IEC_60559_BFP_EXT) || __MATH_DECLARING_FLOATN]
	(totalorder): Take pointer arguments.
	[__GLIBC_USE (IEC_60559_BFP_EXT) || __MATH_DECLARING_FLOATN]
	(totalordermag): Likewise.
	* manual/arith.texi (totalorder): Likewise.
	(totalorderf): Likewise.
	(totalorderl): Likewise.
	(totalorderfN): Likewise.
	(totalorderfNx): Likewise.
	(totalordermag): Likewise.
	(totalordermagf): Likewise.
	(totalordermagl): Likewise.
	(totalordermagfN): Likewise.
	(totalordermagfNx): Likewise.
	* math/tgmath.h (__TGMATH_BINARY_REAL_RET_ONLY): Remove macro.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (totalorder): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (totalordermag): Likewise.
	* math/Versions (GLIBC_2.31): Add totalorder, totalorderf,
	totalorderl, totalordermag, totalordermagf, totalordermagl,
	totalorderf32, totalorderf64, totalorderf32x, totalordermagf32,
	totalordermagf64, totalordermagf32x, totalorderf64x,
	totalordermagf64x, totalorderf128 and totalordermagf128.
	* math/Makefile (libm-test-funcs-noauto): Add compat_totalorder
	and compat_totalordermag.
	(libm-test-funcs-compat): New variable.
	(libm-tests-compat): Likewise.
	(tests): Do not include compat tests.
	(tests-internal): Add compat tests.
	($(foreach t,$(libm-tests-base),
	$(objpfx)$(t)-compat_totalorder.o)): Depend
	on $(objpfx)libm-test-totalorder.c.
	($(foreach t,$(libm-tests-base),
	$(objpfx)$(t)-compat_totalordermag.o): Depend on
	$(objpfx)libm-test-totalordermag.c.
	(tgmath3-macros): Remove totalorder and totalordermag.
	* math/libm-test-compat_totalorder.inc: New file.
	* math/libm-test-compat_totalordermag.inc: Likewise.
	* math/libm-test-driver.c (struct test_ff_i_data): Update comment.
	(RUN_TEST_fpfp_b): New macro.
	(RUN_TEST_LOOP_fpfp_b): Likewise.
	* math/libm-test-totalorder.inc (totalorder_test_data): Use
	TEST_fpfp_b.
	(totalorder_test): Condition on [!COMPAT_TEST].
	(do_test): Likewise.
	* math/libm-test-totalordermag.inc (totalordermag_test_data): Use
	TEST_fpfp_b.
	(totalordermag_test): Condition on [!COMPAT_TEST].
	(do_test): Likewise.
	* math/gen-tgmath-tests.py (Tests.add_all_tests): Remove
	totalorder and totalordermag.
	* math/test-tgmath.c (NCALLS): Change to 132.
	(F(compile_test)): Do not call totalorder or totalordermag.
	(F(totalorder)): Remove.
	(F(totalordermag)): Likewise.
	* include/float.h (__STDC_WANT_IEC_60559_TYPES_EXT__): Do not
	define if [__STDC_WANT_IEC_60559_TYPES_EXT__].
	* include/setjmp.h [!_ISOMAC] (STR_HELPER): Rename to
	SJSTR_HELPER.
	[!_ISOMAC] (STR): Rename to SJSTR.  Update call to STR_HELPER.
	[!_ISOMAC] (TEST_SIZE): Update call to STR.
	[!_ISOMAC] (TEST_ALIGN): Likewise.
	[!_ISOMAC] (TEST_OFFSET): Likewise.
	* sysdeps/ieee754/dbl-64/s_totalorder.c: Include <shlib-compat.h>
	and <first-versions.h>.
	(__totalorder): Take pointer arguments.  Add symbol versions and
	compat symbols.
	* sysdeps/ieee754/dbl-64/s_totalordermag.c: Include
	<shlib-compat.h> and <first-versions.h>.
	(__totalordermag): Take pointer arguments.  Add symbol versions
	and compat symbols.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Include
	<shlib-compat.h> and <first-versions.h>.
	(__totalorder): Take pointer arguments.  Add symbol versions and
	compat symbols.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c: Include
	<shlib-compat.h> and <first-versions.h>.
	(__totalordermag): Take pointer arguments.  Add symbol versions
	and compat symbols.
	* sysdeps/ieee754/float128/float128_private.h
	(__totalorder_compatl): New macro.
	(__totalordermag_compatl): Likewise.
	* sysdeps/ieee754/flt-32/s_totalorderf.c: Include <shlib-compat.h>
	and <first-versions.h>.
	(__totalorderf): Take pointer arguments.  Add symbol versions and
	compat symbols.
	* sysdeps/ieee754/flt-32/s_totalordermagf.c: Include
	<shlib-compat.h> and <first-versions.h>.
	(__totalordermagf): Take pointer arguments.  Add symbol versions
	and compat symbols.
	* sysdeps/ieee754/ldbl-128/s_totalorderl.c: Include
	<shlib-compat.h> and <first-versions.h>.
	(__totalorderl): Take pointer arguments.  Add symbol versions and
	compat symbols.
	* sysdeps/ieee754/ldbl-128/s_totalordermagl.c: Include
	<shlib-compat.h> and <first-versions.h>.
	(__totalordermagl): Take pointer arguments.  Add symbol versions
	and compat symbols.
	* sysdeps/ieee754/ldbl-128ibm/s_totalorderl.c: Include
	<shlib-compat.h>.
	(__totalorderl): Take pointer arguments.  Add symbol versions and
	compat symbols.
	* sysdeps/ieee754/ldbl-128ibm/s_totalordermagl.c: Include
	<shlib-compat.h>.
	(__totalordermagl): Take pointer arguments.  Add symbol versions
	and compat symbols.
	* sysdeps/ieee754/ldbl-96/s_totalorderl.c: Include
	<shlib-compat.h> and <first-versions.h>.
	(__totalorderl): Take pointer arguments.  Add symbol versions and
	compat symbols.
	* sysdeps/ieee754/ldbl-96/s_totalordermagl.c: Include
	<shlib-compat.h> and <first-versions.h>.
	(__totalordermagl): Take pointer arguments.  Add symbol versions
	and compat symbols.
	* sysdeps/ieee754/ldbl-opt/nldbl-totalorder.c (totalorderl): Take
	pointer arguments.
	* sysdeps/ieee754/ldbl-opt/nldbl-totalordermag.c (totalordermagl):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/test-totalorderl-ldbl-128ibm.c
	(do_test): Update calls to totalorderl and totalordermagl.
	* sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c (do_test):
	Update calls to totalorderl and totalordermagl.
	* sysdeps/mach/hurd/i386/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/csky/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2019-08-15 15:18:34 +00:00
Joseph Myers
777d75fbc0 Add feature test macro _ISOC2X_SOURCE.
This patch starts preparation for C2X support in glibc headers by
adding a feature test macro _ISOC2X_SOURCE and corresponding
__GLIBC_USE (ISOC2X).  (I chose to use the newer __GLIBC_USE style for
this rather than the older __USE_* macros tested with #ifdef.)  As
with other such macros, C2X features are also enabled by compiling for
a standard newer than C17, or by using _GNU_SOURCE.

This patch does not itself enable anything new in the headers for C2X;
that is to be done in followup patches.  (For example, most of the TS
18661-1 functions should be declared for C2X without any
__STDC_WANT_IEC_60559_BFP_EXT__ being needed, but the ones that
18661-1 adds to Annex F because of their close relation to IEEE 754
formats do still need the WANT macro in C2X.)

Once C2X becomes an actual standard we'll presumably move to using the
actual year in the feature test macro and __GLIBC_USE, with some
period when both macro spellings are accepted, as was done with
_ISOC9X_SOURCE.

Tested for x86_64.

	* include/features.h (_ISOC2X_SOURCE): New feature test macro.
	Undefine and define to 1 if [_GNU_SOURCE].
	(__GLIBC_USE_ISOC2X): New macro.  Undefine and redefine depending
	on [_ISOC2X_SOURCE] and [__STDC_VERSION__ > 201710L].
	(__USE_ISOC11): Also define to 1 if [_ISOC2X_SOURCE].
	(__USE_ISOC99): Likewise.
	(__USE_ISOC95): Likewise.
	* manual/creature.texi (_ISOC2X_SOURCE): Document.
2019-08-13 11:26:00 +00:00
DJ Delorie
c48d92b430 Add glibc.malloc.mxfast tunable
* elf/dl-tunables.list: Add glibc.malloc.mxfast.
* manual/tunables.texi: Document it.
* malloc/malloc.c (do_set_mxfast): New.
(__libc_mallopt): Call it.
* malloc/arena.c: Add mxfast tunable.
* malloc/tst-mxfast.c: New.
* malloc/Makefile: Add it.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2019-08-09 14:04:03 -04:00
Florian Weimer
1a7fe2ebe5 login: Remove utmp backend jump tables [BZ #23518]
There is just one file-based implementation, so this dispatch
mechanism is unnecessary.  Instead of the vtable pointer
__libc_utmp_jump_table, use a non-negative file_fd as the indicator
that the backend is initialized.
2019-08-05 15:55:05 +02:00
Carlos O'Donell
e712490684 Update install and NEWS for 2.30 release. 2019-08-01 00:22:46 -04:00
Florian Weimer
b8b3d5a14e Linux: Move getdents64 to <dirent.h>
This matches the location of the declaration in musl.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2019-07-29 21:02:46 +02:00
Mike Crowe
e996fa72a9 nptl: Add POSIX-proposed pthread_rwlock_clockrdlock & pthread_rwlock_clockwrlock
Add:
 int pthread_rwlock_clockrdlock (pthread_rwlock_t *rwlock,
                                 clockid_t clockid,
                                 const struct timespec *abstime)
and:
 int pthread_rwlock_clockwrlock (pthread_rwlock_t *rwlock,
                                 clockid_t clockid,
                                 const struct timespec *abstime)

which behave like pthread_rwlock_timedrdlock and
pthread_rwlock_timedwrlock respectively, except they always measure
abstime against the supplied clockid. The functions currently support
CLOCK_REALTIME and CLOCK_MONOTONIC and return EINVAL if any other
clock is specified.

	* sysdeps/nptl/pthread.h: Add pthread_rwlock_clockrdlock and
	pthread_wrlock_clockwrlock.
	* nptl/Makefile: Build pthread_rwlock_clockrdlock.c and
	pthread_rwlock_clockwrlock.c.
	* nptl/pthread_rwlock_clockrdlock.c: Implement
	pthread_rwlock_clockrdlock.
	* nptl/pthread_rwlock_clockwrlock.c: Implement
	pthread_rwlock_clockwrlock.
	* nptl/pthread_rwlock_common.c (__pthread_rwlock_rdlock_full): Add
	clockid parameter and verify that it indicates a supported clock on
	entry so that we fail even if it doesn't end up being used. Pass
	that clock on to futex_abstimed_wait when necessary.
	(__pthread_rwlock_wrlock_full): Likewise.
	* nptl/pthread_rwlock_rdlock.c: (__pthread_rwlock_rdlock): Pass
	CLOCK_REALTIME to __pthread_rwlock_rdlock_full even though it won't
	be used because there's no timeout.
	* nptl/pthread_rwlock_wrlock.c (__pthread_rwlock_wrlock): Pass
	CLOCK_REALTIME to __pthread_rwlock_wrlock_full even though it won't
	be used because there is no timeout.
	* nptl/pthread_rwlock_timedrdlock.c (pthread_rwlock_timedrdlock):
	Pass CLOCK_REALTIME to __pthread_rwlock_rdlock_full since abstime
	uses that clock.
	* nptl/pthread_rwlock_timedwrlock.c (pthread_rwlock_timedwrlock):
	Pass CLOCK_REALTIME to __pthread_rwlock_wrlock_full since abstime
	uses that clock.
	* sysdeps/unix/sysv/linux/aarch64/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* nptl/tst-abstime.c (th): Add pthread_rwlock_clockrdlock and
	pthread_rwlock_clockwrlock timeout tests to match the existing
	pthread_rwlock_timedrdloock and pthread_rwlock_timedwrlock tests.
	* nptl/tst-rwlock14.c (do_test): Likewise.
	* nptl/tst-rwlock6.c Invent verbose_printf macro, and use for
	ancillary output throughout. (tf): Accept thread_args structure so
	that rwlock, a clockid and function name can be passed to the
	thread. (do_test_clock): Rename from do_test. Accept clockid
	parameter to specify test clock. Use the magic clockid value of
	CLOCK_USE_TIMEDLOCK to indicate that pthread_rwlock_timedrdlock and
	pthread_rwlock_timedwrlock should be tested, otherwise pass the
	specified clockid to pthread_rwlock_clockrdlock and
	pthread_rwlock_clockwrlock. Use xpthread_create and xpthread_join.
	(do_test): Call do_test_clock to test each clockid in turn.
	* nptl/tst-rwlock7.c: Likewise.
	* nptl/tst-rwlock9.c (writer_thread, reader_thread): Accept
	thread_args structure so that the (now int) thread number, the
	clockid and the function name can be passed to the thread.
	(do_test_clock): Renamed from do_test. Pass the necessary
	thread_args when creating the reader and writer threads. Use
	xpthread_create and xpthread_join.
	(do_test): Call do_test_clock to test each clockid in turn.
	* manual/threads.texi: Add documentation for
	pthread_rwlock_clockrdlock and pthread_rwlock_clockwrclock.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-07-12 13:36:24 +00:00
Mike Crowe
afe4de7d28 nptl: Add POSIX-proposed pthread_cond_clockwait
Add:

 int pthread_cond_clockwait (pthread_cond_t *cond,
                             pthread_mutex_t *mutex,
                             clockid_t clockid,
                             const struct timespec *abstime)

which behaves just like pthread_cond_timedwait except it always measures
abstime against the supplied clockid. Currently supports CLOCK_REALTIME
and
CLOCK_MONOTONIC and returns EINVAL if any other clock is specified.

Includes feedback from many others. This function was originally
proposed[1] as pthread_cond_timedwaitonclock_np, but The Austin Group
preferred the new name.

	* nptl/Makefile: Add tst-cond26 and tst-cond27
	* nptl/Versions (GLIBC_2.30): Add pthread_cond_clockwait
	* sysdeps/nptl/pthread.h: Likewise
	* nptl/forward.c: Add __pthread_cond_clockwait
	* nptl/forward.c: Likewise
	* nptl/pthreadP.h: Likewise
	* sysdeps/nptl/pthread-functions.h: Likewise
	* nptl/pthread_cond_wait.c (__pthread_cond_wait_common): Add
	clockid parameter and comment describing why we don't need to
	check
	its value. Use that value when calling
	futex_abstimed_wait_cancelable rather than reading the clock
	from
	the flags. (__pthread_cond_wait): Pass unused clockid parameter.
	(__pthread_cond_timedwait): Read clock from flags and pass it to
	__pthread_cond_wait_common. (__pthread_cond_clockwait): Add new
	function with weak alias from pthread_cond_clockwait.
	* sysdeps/mach/hurd/i386/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libpthread.abilist
	* (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30):
	* Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* nptl/tst-cond11.c (run_test): Support testing
	pthread_cond_clockwait too by using a special magic
	CLOCK_USE_ATTR_CLOCK value to determine whether to call
	pthread_cond_timedwait or pthread_cond_clockwait. (do_test):
	Pass
	CLOCK_USE_ATTR_CLOCK for existing tests, and add new tests using
	all combinations of CLOCK_MONOTONIC and CLOCK_REALTIME.
	* ntpl/tst-cond26.c: New test for passing unsupported and
	* invalid
	clocks to pthread_cond_clockwait.
	* nptl/tst-cond27.c: Add test similar to tst-cond5.c, but using
	struct timespec and pthread_cond_clockwait.
	* manual/threads.texi: Document pthread_cond_clockwait. The
	* comment
	was provided by Carlos O'Donell.

[1] https://sourceware.org/ml/libc-alpha/2015-07/msg00193.html

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-07-12 13:36:24 +00:00
Mike Crowe
6615f77978 nptl: Add POSIX-proposed sem_clockwait
Add:

 int sem_clockwait (sem_t *sem, clockid_t clock, const struct timespec
*abstime)

which behaves just like sem_timedwait, but measures abstime against the
specified clock. Currently supports CLOCK_REALTIME and CLOCK_MONOTONIC
and sets errno == EINVAL if any other clock is specified.

	* nptl/sem_waitcommon.c (do_futex_wait, __new_sem_wait_slow): Add
	clockid parameters to indicate the clock which abstime should be
	measured against.
	* nptl/sem_timedwait.c (sem_timedwait), nptl/sem_wait.c
	(__new_sem_wait): Pass CLOCK_REALTIME as clockid to
	__new_sem_wait_slow.
	* nptl/sem_clockwait.c: New file to implement sem_clockwait based
	on sem_timedwait.c.
	* nptl/Makefile: Add sem_clockwait.c source file. Add CFLAGS for
	sem_clockwait.c to match those used for sem_timedwait.c.
	* sysdeps/pthread/semaphore.h: Add sem_clockwait.
	* nptl/Versions (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist
	(GLIBC_2.30): Likewise.
	* nptl/tst-sem17.c: Add new test for passing invalid clock to
	sem_clockwait.
	* nptl/tst-sem13.c, nptl/tst-sem5.c: Modify existing sem_timedwait
	tests to also test sem_clockwait.
	* manual/threads.texi: Document sem_clockwait.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-07-12 13:36:23 +00:00
Andreas Schwab
32b8188ac8 Don't declare __malloc_check_init in <malloc.h> (bug 23352)
The function was never part of the malloc API.
2019-07-10 15:04:05 +02:00
Florian Weimer
5a659ccc0e io: Remove copy_file_range emulation [BZ #24744]
The kernel is evolving this interface (e.g., removal of the
restriction on cross-device copies), and keeping up with that
is difficult.  Applications which need the function should
run kernels which support the system call instead of relying on
the imperfect glibc emulation.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-06-28 09:39:21 +02:00
Florian Weimer
51ea67d548 Linux: Add getdents64 system call
No 32-bit system call wrapper is added because the interface
is problematic because it cannot deal with 64-bit inode numbers
and 64-bit directory hashes.

A future commit will deprecate the undocumented getdirentries
and getdirentries64 functions.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2019-06-07 09:27:01 +02:00
Wilco Dijkstra
1f50f2ad85 Small tcache improvements
Change the tcache->counts[] entries to uint16_t - this removes
the limit set by char and allows a larger tcache.  Remove a few
redundant asserts.

bench-malloc-thread with 4 threads is ~15% faster on Cortex-A72.

Reviewed-by: DJ Delorie <dj@redhat.com>

	* malloc/malloc.c (MAX_TCACHE_COUNT): Increase to UINT16_MAX.
	(tcache_put): Remove redundant assert.
	(tcache_get): Remove redundant asserts.
	(__libc_malloc): Check tcache count is not zero.
	* manual/tunables.texi (glibc.malloc.tcache_count): Update maximum.
2019-05-17 18:16:20 +01:00