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Commit Graph

32 Commits

Author SHA1 Message Date
Thomas Wouters
1baac7201e Fix SF : Python crash on del of a slice of a mmap
Check for slice/item deletion, which calls slice/item assignment with a NULL
value, and raise a TypeError instead of coredumping. Bugreport and suggested
fix by Alex Martelli.
2001-07-16 15:47:36 +00:00
Tim Peters
d401eddf91 Fix new compiler warnings. Also boost "start" from (C) int to long and
return a (C) long:  PyArg_ParseTuple and Py_BuildValue may not let us get
at the size_t we really want, but C int is clearly too small for a 64-bit
box, and both the start parameter and the return value should work for
large mapped files even on 32-bit boxes.  The code really needs to be
rethought from scratch (not by me, though ...).
2001-05-14 23:19:12 +00:00
Greg Stein
834f4dd7c9 Fix the .find() method for memory maps.
1) it didn't obey the "start" parameter (and when it does, we must validate
   the value)
2) the return value needs to be an absolute index, rather than relative to
   some arbitrary point in the file

(checking CVS, it appears this method never worked; these changes bring it
 into line with typical .find() behavior)
2001-05-14 09:32:26 +00:00
Tim Peters
d6283b84c8 Minor fiddling related to
SF patch 416251 2.1c1 mmapmodule: unused vrbl cleanup
2001-05-09 18:48:26 +00:00
Tim Peters
cf96de052f SF but : compiler warnings compiling 2.1.
Repaired *some* of the SGI compiler warnings Sjoerd Mullender reported.
2001-04-21 02:46:11 +00:00
Tim Peters
2caf8df868 SF bug 128713: type(mmap_object) blew up on Linux. 2001-01-14 05:05:51 +00:00
Guido van Rossum
5a53019b0d Part of SF patch by jlt63 to support building these modules
under CYGWIN as shared libraries (DLLs).
2001-01-10 21:03:32 +00:00
Tim Peters
0d9f9dcf67 Windows mmap should (as the docs probably <wink> say) create a mapping
without a name when the optional tagname arg isn't specified.  Was
actually creating a mapping with an empty string as the name.
2001-01-10 05:42:18 +00:00
Fred Drake
145f96eb36 my_getpagesize(): New function; returns the size of a page of memory.
Versions are defined for Windows and Unix; the Unix
                   flavor uses sysconf() to get the page size; this avoids
                   the use of getpagesize(), which is deprecated and
                   requires an additional library on some platforms
                   (specifically, Reliant UNIX).

This partially closes SourceForge bug .
2000-10-01 17:50:46 +00:00
Guido van Rossum
4b36e6bde1 For the benefit of SunOS 4.1.4, define MS_SYNC as 0 when it's
undefined.  ccording to MvL, this is safe: the MS_SYNC flag means that
msync() returns when all I/O operations are scheduled; without it, it
waits until they are complete, which is acceptable behavior.
2000-09-25 13:16:15 +00:00
Mark Hammond
071864acb2 More Windows changes.
* After discussion with Trent, all INT_PTR references have been removed in favour of the HANDLE it should always have been.  Trent can see no 64bit issues here.

* In this process, I noticed that the close operation was dangerous, in that we could end up passing bogus results to the Win32 API.  These result of the API functions passed the bogus values were never (and still are not) checked, but this is closer to "the right thing" (tm) than before.

Tested on Windows and Linux.
2000-07-30 02:46:26 +00:00
Mark Hammond
2cbed005b6 Fixes for Windows (but also tested on Linux). Test suite now completes, and this module should not leak in the face of errors.
Checkin that replaces the INT_PTR types with HANDLEs still TBD (but as that is a "spelling" patch, rather than a functional one, I will commit it seperately.
2000-07-30 02:22:43 +00:00
Thomas Wouters
7e47402264 Spelling fixes supplied by Rob W. W. Hooft. All these are fixes in either
comments, docstrings or error messages. I fixed two minor things in
test_winreg.py ("didn't" -> "Didn't" and "Didnt" -> "Didn't").

There is a minor style issue involved: Guido seems to have preferred English
grammar (behaviour, honour) in a couple places. This patch changes that to
American, which is the more prominent style in the source. I prefer English
myself, so if English is preferred, I'd be happy to supply a patch myself ;)
2000-07-16 12:04:32 +00:00
Fredrik Lundh
5cccf50931 - added (long) casts to a couple of Py_BuildValue calls,
just for the sake of it.

  note that this only covers the unlikely case that size_t
  is smaller than a long; it's probably more likely that
  there are platforms out there where size_t is *larger*
  than a long, and mmapmodule cannot really deal with that
  today.
2000-07-09 13:16:13 +00:00
Fredrik Lundh
54cf3dc88c -- ANSI-fying, names
(patch  by Peter Schneider-Kamp, minus the
    indentation changes)

-- added INT_PTR workaround to make it build under VC 5.0
2000-07-08 22:05:01 +00:00
Andrew M. Kuchling
da13f89fee Remove definition of _GNU_SOURCE, since Python.h now does it for us 2000-07-05 12:22:14 +00:00
Guido van Rossum
ce8e1dc395 clean up warnings in Win32 build of mmapmodule.c 2000-07-01 00:51:51 +00:00
Andrew M. Kuchling
ea34a84e54 Patch from Lorenzo M. Catucci:
I discovered the [MREMAP_MAYMOVE] symbol is only defined when _GNU_SOURCE is
defined; therefore, here is the change: if we are compiling for linux,
define _GNU_SOURCE before including mman.h, and all is done.
2000-06-18 19:06:49 +00:00
Andrew M. Kuchling
6fef30e1fa Support resizing the mapping depending on whether HAVE_MREMAP is defined
Remove two unused variables
2000-06-18 14:51:21 +00:00
Andrew M. Kuchling
70d2742fce Patch from Trent Mick:
The seek() method is broken for any 'whence' value (seek from
	start, current, orend) other than the default. I have a patch
	that fixes that as well as gets mmap'd files working on
	Linux64 and Win64.
2000-06-18 04:45:14 +00:00
Andrew M. Kuchling
9bc5f3339a Removed MS_INVALIDATE flags 2000-06-18 04:25:08 +00:00
Andrew M. Kuchling
7b9fb92932 Fix the size() method to return the size of the file on Unix, not the
size of the mapped area.  This seems to be what the Windows version does.
This change requires keeping around the fd of the mapped file.
2000-06-17 22:41:22 +00:00
Andrew M. Kuchling
841b9fbebb Use PyArg_ParseTuple and specify the method names, following a suggestion
from Greg Stein
2000-06-03 20:43:43 +00:00
Andrew M. Kuchling
961fe17b4c Add missing PyArg_NoArgs() calls to methods that didn't take arguments
(Pointed out by Moshe Zadka)
2000-06-03 19:41:42 +00:00
Guido van Rossum
b18618dab7 Vladimir Marangozov's long-awaited malloc restructuring.
For more comments, read the patches@python.org archives.
For documentation read the comments in mymalloc.h and objimpl.h.

(This is not exactly what Vladimir posted to the patches list; I've
made a few changes, and Vladimir sent me a fix in private email for a
problem that only occurs in debug mode.  I'm also holding back on his
change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
Guido van Rossum
36d4f8b0ec Correct fix by Mark Favas for the cast problems. 2000-04-10 21:34:37 +00:00
Guido van Rossum
e110dcfa86 I've had complaints about the comparison "where >= 0" before -- on
IRIX, it doesn't even compile.  Added a cast: "where >= (char *)0".
2000-04-10 21:14:05 +00:00
Fred Drake
1ef4e2d54e Mark Hammond <mhammond@skippinet.com.au>:
This patch fixes the mmap module on Windows 9x.
2000-04-05 14:15:31 +00:00
Fred Drake
56a87a0905 Patch from Hrvoje Niksic <hniksic@iskon.hr>:
The bug is in mmap_read_line_method(), and its loop that searches for
newlines.  After the loop reaches EOF, eol is incremented and points
after the end of the memory.  This results in readline() method
sometimes picking up and returning a byte after the end of the string.
This is usually a bogus \0, but it could cause SIGSEGV if it's after
the end of the page).

The patch fixes the problem.  Also, it uses memchr() for finding a
character, which is in fact the "strnchr" the comment is asking for.
memchr() is already used in Python sources, so there should be no
portability problems.
2000-04-04 18:17:35 +00:00
Guido van Rossum
325942adb4 Removed three unused variables from the Windows code. 2000-03-31 15:04:26 +00:00
Guido van Rossum
09fdf07315 Hacked for Win32 by Mark Hammond.
Reformatted for 8-space tabs and fitted into 80-char lines by GvR.

Mark writes:

* the Win32 version now accepts the same args as the Unix version.
The win32 specific "tag" param is now optional.  The end result is
that the exact same test suite runs on Windows (definately a worthy
goal!).

* I changed the error object.  All occurences of the error, except
for 1, corresponds to an underlying OS error.  This one was changed
to a ValueError (a better error for that condition), and the module
error object is now simply EnvironmentError.  All win32 error
routines now call the new Windows specific error handler.
2000-03-31 01:17:07 +00:00
Andrew M. Kuchling
1ed7d2d2b8 Added mmap module -- map a view of a file into memory on Win32 and Unix.
(Needs testing on Win32.)
2000-03-30 21:14:30 +00:00