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* gh-117873: Revert _posixshmem.shm_open() change (#118901)Victor Stinner2024-05-131-2/+1
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* gh-117873: Use positional-only parameters in _posixshmem (#118012)Victor Stinner2024-05-101-2/+4
| | | | | * shm_unlink() parameter becomes positional-only. * shm_open() first parameter (path) becomes positional-only, the two following parameters remain positional-or-keyword.
* gh-116322: Add Py_mod_gil module slot (#116882)Brett Simmers2024-05-031-2/+3
| | | | | | | | | | | | | | This PR adds the ability to enable the GIL if it was disabled at interpreter startup, and modifies the multi-phase module initialization path to enable the GIL when loading a module, unless that module's spec includes a slot indicating it can run safely without the GIL. PEP 703 called the constant for the slot `Py_mod_gil_not_used`; I went with `Py_MOD_GIL_NOT_USED` for consistency with gh-104148. A warning will be issued up to once per interpreter for the first GIL-using module that is loaded. If `-v` is given, a shorter message will be printed to stderr every time a GIL-using module is loaded (including the first one that issues a warning).
* gh-108494: Fix Argument Clinic LIMITED_CAPI_REGEX (#116610)Victor Stinner2024-03-111-3/+2
| | | Accept spaces in "# define Py_LIMITED_API 0x030d0000".
* gh-115886: Handle embedded null characters in shared memory name (GH-115887)Serhiy Storchaka2024-02-251-2/+13
| | | | shm_open() and shm_unlink() now check for embedded null characters in the name and raise an error instead of silently truncating it.
* gh-111863: Rename `Py_NOGIL` to `Py_GIL_DISABLED` (#111864)Hugo van Kemenade2023-11-201-2/+2
| | | Rename Py_NOGIL to Py_GIL_DISABLED
* gh-111089: Revert PyUnicode_AsUTF8() changes (#111833)Victor Stinner2023-11-071-2/+2
| | | | | | | | | | | | | | | | | | | | | * Revert "gh-111089: Use PyUnicode_AsUTF8() in Argument Clinic (#111585)" This reverts commit d9b606b3d04fc56fb0bcc479d7d6c14562edb5e2. * Revert "gh-111089: Use PyUnicode_AsUTF8() in getargs.c (#111620)" This reverts commit cde1071b2a72e8261ca66053ef61431b7f3a81fd. * Revert "gh-111089: PyUnicode_AsUTF8() now raises on embedded NUL (#111091)" This reverts commit d731579bfb9a497cfb0076cb6b221058a20088fe. * Revert "gh-111089: Add PyUnicode_AsUTF8() to the limited C API (#111121)" This reverts commit d8f32be5b6a736dc2fc9dca3f1bf176c82fc9b44. * Revert "gh-111089: Use PyUnicode_AsUTF8() in sqlite3 (#111122)" This reverts commit 37e4e20eaa8f27ada926d49e5971fecf0477ad26.
* gh-110968: Py_MOD_PER_INTERPRETER_GIL_SUPPORTED was added to 3.12 (#111584)Victor Stinner2023-11-011-2/+2
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* gh-110481: Implement biased reference counting (gh-110764)Sam Gross2023-10-301-0/+4
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* gh-111089: Add PyUnicode_AsUTF8() to the limited C API (#111121)Victor Stinner2023-10-201-2/+2
| | | | | | | | Add PyUnicode_AsUTF8() function to the limited C API. multiprocessing posixshmem now uses PyUnicode_AsUTF8() instead of PyUnicode_AsUTF8AndSize(): the extension is built with the limited C API. The function now raises an exception if the filename contains an embedded null character instead of truncating silently the filename.
* gh-85283: Build posixshmem extension with Limited C API (#111087)Victor Stinner2023-10-191-8/+7
| | | | | | | Build the _multiprocessing.posixshmem extension with the Limited C API. * Add <errno.h> include. * Replace PyUnicode_AsUTF8() with PyUnicode_AsUTF8AndSize().
* gh-110964: Remove private _PyArg functions (#110966)Victor Stinner2023-10-171-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the following private functions and structures to pycore_modsupport.h internal C API: * _PyArg_BadArgument() * _PyArg_CheckPositional() * _PyArg_NoKeywords() * _PyArg_NoPositional() * _PyArg_ParseStack() * _PyArg_ParseStackAndKeywords() * _PyArg_Parser structure * _PyArg_UnpackKeywords() * _PyArg_UnpackKeywordsWithVararg() * _PyArg_UnpackStack() * _Py_ANY_VARARGS() Changes: * Python/getargs.h now includes pycore_modsupport.h to export functions. * clinic.py now adds pycore_modsupport.h when one of these functions is used. * Add pycore_modsupport.h includes when a C extension uses one of these functions. * Define Py_BUILD_CORE_MODULE in C extensions which now include directly or indirectly (via code generated by Argument Clinic) pycore_modsupport.h: * _csv * _curses_panel * _dbm * _gdbm * _multiprocessing.posixshmem * _sqlite.row * _statistics * grp * resource * syslog * _testcapi: bad_get() no longer uses METH_FASTCALL calling convention but METH_VARARGS. Replace _PyArg_UnpackStack() with PyArg_ParseTuple(). * _testcapi: add PYTESTCAPI_NEED_INTERNAL_API macro which is defined by _testcapi sub-modules which need the internal C API (pycore_modsupport.h): exceptions.c, float.c, vectorcall.c, watchers.c. * Remove Include/cpython/modsupport.h header file. Include/modsupport.h no longer includes the removed header file. * Fix mypy clinic.py
* gh-104922: remove PY_SSIZE_T_CLEAN (#106315)Inada Naoki2023-07-021-2/+0
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* gh-99113: Add Py_MOD_PER_INTERPRETER_GIL_SUPPORTED (gh-104205)Eric Snow2023-05-051-0/+7
| | | Here we are doing no more than adding the value for Py_mod_multiple_interpreters and using it for stdlib modules. We will start checking for it in gh-104206 (once PyInterpreterState.ceval.own_gil is added in gh-104204).
* bpo-1635741: Port _posixshmem extension module to multiphase initialization ↵Christian Heimes2020-11-191-13/+9
| | | | | (GH-23404) Signed-off-by: Christian Heimes <christian@python.org>
* bpo-40268: Remove unused structmember.h includes (GH-19530)Victor Stinner2020-04-151-1/+0
| | | | | | If only offsetof() is needed: include stddef.h instead. When structmember.h is used, add a comment explaining that PyMemberDef is used.
* bpo-35813: Tests and docs for shared_memory (#11816)Davin Potts2019-02-241-668/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Added tests for shared_memory submodule. * Added tests for ShareableList. * Fix bug in allocationn size during creation of empty ShareableList illuminated by existing test run on Linux. * Initial set of docs for shared_memory module. * Added docs for ShareableList, added doctree entry for shared_memory submodule, name refactoring for greater clarity. * Added examples to SharedMemoryManager docs, for ease of documentation switched away from exclusively registered functions to some explicit methods on SharedMemoryManager. * Wording tweaks to docs. * Fix test failures on Windows. * Added tests around SharedMemoryManager. * Documentation tweaks. * Fix inappropriate test on Windows. * Further documentation tweaks. * Fix bare exception. * Removed __copyright__. * Fixed typo in doc, removed comment. * Updated SharedMemoryManager preliminary tests to reflect change of not supporting all registered functions on SyncManager. * Added Sphinx doctest run controls. * CloseHandle should be in a finally block in case MapViewOfFile fails. * Missed opportunity to use with statement. * Switch to self.addCleanup to spare long try/finally blocks and save one indentation, change to use decorator to skip test instead. * Simplify the posixshmem extension module. Provide shm_open() and shm_unlink() functions. Move other functionality into the shared_memory.py module. * Added to doc around size parameter of SharedMemory. * Changed PosixSharedMemory.size to use os.fstat. * Change SharedMemory.buf to a read-only property as well as NamedSharedMemory.size. * Marked as provisional per PEP411 in docstring. * Changed SharedMemoryTracker to be private. * Removed registered Proxy Objects from SharedMemoryManager. * Removed shareable_wrap(). * Removed shareable_wrap() and dangling references to it. * For consistency added __reduce__ to key classes. * Fix for potential race condition on Windows for O_CREX. * Remove unused imports. * Update access to kernel32 on Windows per feedback from eryksun. * Moved kernel32 calls to _winapi. * Removed ShareableList.copy as redundant. * Changes to _winapi use from eryksun feedback. * Adopt simpler SharedMemory API, collapsing PosixSharedMemory and WindowsNamedSharedMemory into one. * Fix missing docstring on class, add test for ignoring size when attaching. * Moved SharedMemoryManager to managers module, tweak to fragile test. * Tweak to exception in OpenFileMapping suggested by eryksun. * Mark a few dangling bits as private as suggested by Giampaolo.
* bpo-35813: Added shared_memory submodule of multiprocessing. (#11664)Davin Potts2019-02-021-0/+724
Added shared_memory submodule to multiprocessing in time for first alpha with cross-platform tests soon to follow.
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