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r74841 | thomas.wouters | 2009-09-16 14:55:54 -0500 (Wed, 16 Sep 2009) | 23 lines
Fix issue #1590864, multiple threads and fork() can cause deadlocks, by
acquiring the import lock around fork() calls. This prevents other threads
from having that lock while the fork happens, and is the recommended way of
dealing with such issues. There are two other locks we care about, the GIL
and the Thread Local Storage lock. The GIL is obviously held when calling
Python functions like os.fork(), and the TLS lock is explicitly reallocated
instead, while also deleting now-orphaned TLS data.
This only fixes calls to os.fork(), not extension modules or embedding
programs calling C's fork() directly. Solving that requires a new set of API
functions, and possibly a rewrite of the Python/thread_*.c mess. Add a
warning explaining the problem to the documentation in the mean time.
This also changes behaviour a little on AIX. Before, AIX (but only AIX) was
getting the import lock reallocated, seemingly to avoid this very same
problem. This is not the right approach, because the import lock is a
re-entrant one, and reallocating would do the wrong thing when forking while
holding the import lock.
Will backport to 2.6, minus the tiny AIX behaviour change.
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r74845 | georg.brandl | 2009-09-16 15:30:09 -0500 (Wed, 16 Sep 2009) | 5 lines
#6844: do not emit DeprecationWarnings on access if Exception.message has been set by the user.
This works by always setting it in __dict__, except when it's implicitly set in __init__.
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r74524 | gregory.p.smith | 2009-08-20 04:39:38 -0500 (Thu, 20 Aug 2009) | 2 lines
Add weakref support to the thread.lock type.
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r74556 | kristjan.jonsson | 2009-08-27 17:20:21 -0500 (Thu, 27 Aug 2009) | 2 lines
issue 6275
Add an "exc_value" attribute to the _AssertRaisesContext context manager in the unittest package. This allows further tests on the exception that was raised after the context manager exits.
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r75236 | mark.dickinson | 2009-10-04 19:38:39 +0100 (Sun, 04 Oct 2009) | 4 lines
Issue #7042: Fix test_signal failure on OS X 10.6 64-bit builds
(and also, with luck, on the x86 FreeBSD buildbot), by making sure
that some user time is used in test_itimer_virtual.
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r75223 | benjamin.peterson | 2009-10-03 15:23:24 -0500 (Sat, 03 Oct 2009) | 1 line
#7050 fix a SystemError when using tuple unpacking and augmented assignment
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r75209 | tarek.ziade | 2009-10-03 16:52:33 +0200 (Sat, 03 Oct 2009) | 1 line
now uses the right exception type
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r75192 | tarek.ziade | 2009-10-03 01:49:48 +0200 (Sat, 03 Oct 2009) | 1 line
#6516 added owner/group support for tarfiles in Distutils
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r75171 | antoine.pitrou | 2009-10-01 19:08:03 +0200 (jeu., 01 oct. 2009) | 4 lines
Sync the 2.x `io` docs with py3k, with a small note as to the distinction
between bytes streams and text streams.
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another bug in the process]
Merged revisions 75134 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r75134 | antoine.pitrou | 2009-09-29 19:48:18 +0200 (mar., 29 sept. 2009) | 4 lines
Issue #6790: Make it possible again to pass an `array.array` to
`httplib.HTTPConnection.send`. Patch by Kirk McDonald.
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r75111 | r.david.murray | 2009-09-28 12:57:45 -0400 (Mon, 28 Sep 2009) | 5 lines
Prevent test_bad_address failure when a domain in the dns search
path implements a '*' default rule. Also update comment with
a more complete explanation of the difficulties inherent in
the test.
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r75123 | philip.jenvey | 2009-09-28 21:32:44 -0700 (Mon, 28 Sep 2009) | 4 lines
#6990: clear threading.local's key only after its thread state is removed:
fixes local subclasses leaving old state around after a ref cycle GC which
could be recycled by new locals
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r75110 | mark.dickinson | 2009-09-28 17:52:40 +0100 (Mon, 28 Sep 2009) | 9 lines
Style/consistency/nano-optimization nit: replace occurrences of
(high_bits << PyLong_SHIFT) + low_bits with
(high_bits << PyLong_SHIFT) | low_bits
in Objects/longobject.c. Motivation:
- shouldn't unnecessarily mix bit ops with arithmetic ops (style)
- this pattern should be spelt the same way thoughout (consistency)
- it's very very very slightly faster: no need to worry about
carries to the high digit (nano-optimization).
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r75103 | kristjan.jonsson | 2009-09-28 14:08:48 +0100 (Mon, 28 Sep 2009) | 2 lines
http://bugs.python.org/issue6836
A memory block allocated with one API was being handed over to an object that used another API to release it.
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r75104 | kristjan.jonsson | 2009-09-28 14:12:38 +0100 (Mon, 28 Sep 2009) | 2 lines
http://bugs.python.org/issue6836
The debug memory api now keeps track of which external API (PyMem_* or PyObject_*) was used to allocate each block and treats any API violation as an error. Added separate _PyMem_DebugMalloc functions for the Py_Mem API instead of having it use the _PyObject_DebugMalloc functions.
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r75106 | kristjan.jonsson | 2009-09-28 16:56:25 +0100 (Mon, 28 Sep 2009) | 2 lines
http://bugs.python.org/issue6836
A missing 'const' wasn't detected by Visual Studio.
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Amaury Forgeot d'Arc
Benjamin Peterson
Mark Dickinson
Ezio Melotti
Tarek Ziadé
Antoine Pitrou
R. David Murray
Raymond Hettinger
Philip Jenvey
Kristján Valur Jónsson
Georg Brandl