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2923 Commits

Author SHA1 Message Date
Thomas Wouters c4dcb3801e 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.
 2009-09-16 19:55:54 +00:00
Benjamin Peterson 93ed82048f revert unintended changes 2009-09-09 11:42:57 +00:00
Benjamin Peterson 8246968b12 tabbify 2009-09-09 11:40:54 +00:00
Benjamin Peterson d692a71fdd revert r74699 since it loses useful error information 2009-09-07 13:02:15 +00:00
Benjamin Peterson 5515990ee1 PyObject_GetIter can set an error for its self just fine 2009-09-06 22:43:39 +00:00
Benjamin Peterson c0ba828857 better col_offsets for "for" statements with tuple unpacking #6704 
Patch from Frank Wierzbicki.
 2009-08-15 22:59:21 +00:00
Sean Reifscheider 9279e7d177 - Issue #6624: yArg_ParseTuple with "s" format when parsing argument with 
NUL: Bogus TypeError detail string.
 2009-08-01 23:54:55 +00:00
Amaury Forgeot d'Arc 982b2fa32d Better name a variable: 'buf' seems to imply a mutable buffer. 2009-07-25 16:22:06 +00:00
Benjamin Peterson 4879c907ce the Slice in x[::] has to have step as None to help the interpreter 2009-07-20 20:28:08 +00:00
Hirokazu Yamamoto e78e5d2e51 Issue #6415: Fixed warnings.warn sagfault on bad formatted string. 2009-07-17 06:20:46 +00:00
R. David Murray 3310a10a68 Update issue 6070 patch to match the patch that was actually tested 
on Windows.
 2009-07-07 09:54:16 +00:00
R. David Murray 23a736a4f0 Issue 6070: when creating a compiled file, after copying the mode bits, on 
posix zap the execute bit in case it was set on the .py file, since the
compiled files are not directly executable on posix.  Patch by Marco N.
 2009-07-07 01:06:13 +00:00
Benjamin Peterson 753d16234f when print() gets unicode arguments, sep and end should be unicode by default #4618 2009-07-02 18:16:45 +00:00
Benjamin Peterson 4a3cf191f4 small optimization: avoid popping the current block until we have to 2009-07-01 23:45:19 +00:00
Georg Brandl e323e0e91a Fix error handling in PyCode_Optimize, by Alexander Schremmer at EuroPython sprint. 2009-06-29 14:44:49 +00:00
Alexandre Vassalotti 7274cffa9e Update docstrings for sys.getdlopenflags() and sys.setdlopenflags(). 2009-06-29 01:01:51 +00:00
Benjamin Peterson 8f7b94eae9 use stack macros 2009-06-28 16:14:07 +00:00
Benjamin Peterson b8338ab92c add two generic macros for peeking and setting in the stack 2009-06-28 16:08:02 +00:00
Benjamin Peterson 1a4ceb2f4b fix grammar 2009-06-23 01:18:57 +00:00
Benjamin Peterson d9920c255d remove tmpname support since it's no longer used 2009-06-21 23:03:36 +00:00
Benjamin Peterson f67caf8523 don't need to add the name 'lambda' as assigned 2009-06-21 23:01:07 +00:00
Benjamin Peterson 5ecf57adcf remove unused 'encoding' member from the compiler struct 2009-06-17 03:23:04 +00:00
Benjamin Peterson 8fa3e933c1 update ast version 2009-06-13 20:30:48 +00:00
Benjamin Peterson a72be3b325 when no module is given in a 'from' relative import, make ImportFrom.module NULL 2009-06-13 20:23:33 +00:00
Benjamin Peterson 52c4bec76b give a better error message when deleting () 2009-06-13 17:08:53 +00:00
Benjamin Peterson 5d1ff94b9e set Print.values to NULL if there are no values 2009-06-13 16:19:19 +00:00
Benjamin Peterson d1f5a59edb allow importing from a module named None if it has an 'as' clause 2009-06-13 13:06:21 +00:00
Benjamin Peterson 565e1b6bb7 prevent import statements from assigning to None 2009-06-13 03:46:30 +00:00
Benjamin Peterson 4afbba3d34 keep the slice.step field as NULL if no step expression is given 2009-06-13 01:40:00 +00:00
Alexandre Vassalotti a6e3474d02 Add const qualifier to PyErr_SetFromErrnoWithFilename and to 
PyErr_SetFromErrnoWithUnicodeFilename.
 2009-06-12 20:57:12 +00:00
Benjamin Peterson 4efb5d0b82 remove check for case handled in sub-function 2009-06-11 22:29:23 +00:00
Benjamin Peterson b266481ed8 revert r73361 2009-06-11 17:49:38 +00:00
Benjamin Peterson e5fa5fe8fc remove duplicate check 2009-06-11 16:25:52 +00:00
Benjamin Peterson a5a5728cf0 remove error checks already done in set_context() 2009-06-08 23:44:13 +00:00
Benjamin Peterson 8ea4ded9a6 remove useless assertion 2009-06-08 22:18:32 +00:00
Antoine Pitrou 46dbe27f7e Issue #5330: C functions called with keyword arguments were not reported by 
the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
 2009-05-30 21:27:00 +00:00
Jeffrey Yasskin 7937d939b1 Fix nearly all compilation warnings under Apple gcc-4.0. Tested with OPT="-g 
-Wall -Wstrict-prototypes -Werror" in both --with-pydebug mode and --without.
There's still a batch of non-prototype warnings in Xlib.h that I don't know how
to fix.
 2009-05-29 03:44:31 +00:00
Philip Jenvey dd0388a1c2 further hint to where the open docs really are 2009-05-28 03:12:16 +00:00
Benjamin Peterson aafa18aa05 teach the peepholer about SETUP_WITH 2009-05-26 12:49:59 +00:00
Georg Brandl 944f684ce6 Allow multiple context managers in one with statement, as proposed 
in http://codereview.appspot.com/53094 and accepted by Guido.

The construct is transformed into multiple With AST nodes so that
there should be no problems with the semantics.
 2009-05-25 21:02:56 +00:00
Benjamin Peterson 49a6b0ef70 take into account the fact that SETUP_WITH pushes a finally block 2009-05-25 20:12:57 +00:00
Benjamin Peterson 1880d8b823 add a SETUP_WITH opcode 
It speeds up the with statement and correctly looks up the special
methods involved.
 2009-05-25 13:13:44 +00:00
Benjamin Peterson 87e5006d8c handle errors from _PyObject_LookupSpecial when __get__ fails 2009-05-25 02:40:21 +00:00
Jeffrey Yasskin 655d835415 Issue #6042: 
lnotab-based tracing is very complicated and isn't documented very well.  There
were at least 3 comment blocks purporting to document co_lnotab, and none did a
very good job. This patch unifies them into Objects/lnotab_notes.txt which
tries to completely capture the current state of affairs.

I also discovered that we've attached 2 layers of patches to the basic tracing
scheme. The first layer avoids jumping to instructions that don't start a line,
to avoid problems in if statements and while loops.  The second layer
discovered that jumps backward do need to trace at instructions that don't
start a line, so it added extra lnotab entries for 'while' and 'for' loops, and
added a special case for backward jumps within the same line. I replaced these
patches by just treating forward and backward jumps differently.
 2009-05-23 23:23:01 +00:00
Benjamin Peterson e5afa3b24b support building with subversion 1.7 #6094 2009-05-23 19:24:37 +00:00
Hirokazu Yamamoto b24bb27d22 Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more. 2009-05-17 02:52:09 +00:00
R. David Murray 525cffcd7e Move news item to correct section, remove spurious 'see below' 
from docstring.
 2009-05-13 13:07:14 +00:00
R. David Murray a3ec697cbd Issue 5994: add docstrings to marshal. 2009-05-13 00:30:29 +00:00
Benjamin Peterson 4c1fe51ca0 don't ignore exceptions from _PyObject_LengthHint 2009-05-09 19:17:59 +00:00
Benjamin Peterson af1692a266 convert some more special methods to use _PyObject_LookupSpecial 2009-05-09 16:36:39 +00:00