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Miss Islington (bot) 80d7626c74 [3.15] gh-150902: Optimize PyCriticalSection2 to skip locking the same locks held by the current CS2 (gh-151554) 
This mimics an optimization already present for the single-mutex critical section.
(cherry picked from commit c2ca7724af)

Co-authored-by: Daniele Parmeggiani <8658291+dpdani@users.noreply.github.com>
2026-06-19 09:52:07 -04:00
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cpython
[3.15] gh-148829: Make sentinels' repr and module customizable (GH-149654) (#150092)
2026-05-22 07:44:34 -07:00
internal
[3.15] gh-150902: Optimize PyCriticalSection2 to skip locking the same locks held by the current CS2 (gh-151554)
2026-06-19 09:52:07 -04:00
abstract.h
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audit.h
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bltinmodule.h
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boolobject.h
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bytearrayobject.h
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bytesobject.h
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ceval.h
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codecs.h
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compile.h
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complexobject.h
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critical_section.h
gh-149225: Expose Py_CriticalSection in Stable ABI (GH-149227)
2026-05-04 17:32:17 +02:00
datetime.h
gh-141563: Add missing cast to _PyDateTime_IMPORT() (#144667)
2026-02-10 14:47:12 +00:00
descrobject.h
gh-41779: Allow defining any __slots__ for a class derived from tuple (GH-141763)
2026-01-06 11:36:00 +02:00
dictobject.h
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dynamic_annotations.h
[3.15] gh-150907: Fix dynamic_annotations.h when built with C++ and Valgrind (GH-150914) (#150962)
2026-06-05 12:41:19 +00:00
enumobject.h
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errcode.h
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exports.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
fileobject.h
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fileutils.h
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floatobject.h
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frameobject.h
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genericaliasobject.h
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import.h
[3.15] gh-149321: Remove lazy_imports=none startup mode (GH-149389) (#150129)
2026-06-08 22:55:57 +00:00
intrcheck.h
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iterobject.h
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listobject.h
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longobject.h
gh-143869: Add PEP 757 functions to the limited API (#143906)
2026-01-21 14:47:14 +01:00
marshal.h
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memoryobject.h
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methodobject.h
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modsupport.h
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moduleobject.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
object.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
objimpl.h
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opcode_ids.h
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
opcode.h
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osdefs.h
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osmodule.h
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patchlevel.h
Post 3.15.0b2
2026-06-02 20:34:33 +03:00
py_curses.h
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pyabi.h
gh-148690: Build Windows freethreaded binaries into separate directory and include python3t.dll on GIL-enabled (GH-149218)
2026-05-04 17:45:08 +01:00
pyatomic.h
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pybuffer.h
gh-137696: Rename 'fort' parameter to 'order' in PyBuffer_* functions (#137866)
2026-03-19 16:54:27 +05:30
pycapsule.h
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pydtrace.d
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pydtrace.h
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pyerrors.h
gh-142349: Implement PEP 810 - Explicit lazy imports (#142351)
2026-02-12 00:15:33 +00:00
pyexpat.h
[3.15] gh-149018: Use XML_SetHashSalt16Bytes in pyexpat/_elementtree when possible (#149645)
2026-05-24 14:36:30 +01:00
pyframe.h
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pyhash.h
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pylifecycle.h
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pymacconfig.h
gh-145633: Remove support for ancient ARM platforms with mixed-endian doubles (#145634)
2026-03-11 12:39:24 +01:00
pymacro.h
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pymath.h
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pymem.h
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pyport.h
gh-148850: Fix memory sanitizer false positive in os.getrandom (GH-148851)
2026-05-01 17:37:36 +02:00
pystate.h
gh-149101: Implement PEP 788 (GH-149116)
2026-05-06 17:39:30 -04:00
pystats.h
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pystrcmp.h
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pystrtod.h
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Python.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
pythonrun.h
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pythread.h
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pytypedefs.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
rangeobject.h
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README.rst
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refcount.h
gh-146636: abi3t: Define Py_GIL_DISABLED but do not use it (GH-148142)
2026-04-07 09:06:17 +02:00
setobject.h
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sliceobject.h
[3.15] gh-149685: Use the _Py prefix for private C macros (GH-149686) (GH-149790)
2026-05-13 23:29:08 +02:00
slots_generated.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
slots.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
structmember.h
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structseq.h
[3.15] gh-149685: Use the _Py prefix for private C macros (GH-149686) (GH-149790)
2026-05-13 23:29:08 +02:00
sysmodule.h
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traceback.h
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tupleobject.h
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unicodeobject.h
gh-146175: Soft-deprecate outdated macros; convert internal usage (GH-146178)
2026-03-23 12:42:09 +01:00
warnings.h
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weakrefobject.h
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README.rst 

The Python C API
================

The C API is divided into these sections:

1. ``Include/``: Limited API
2. ``Include/cpython/``: CPython implementation details
3. ``Include/cpython/``, names with the ``PyUnstable_`` prefix: API that can
   change between minor releases
4. ``Include/internal/``, and any name with ``_`` prefix: The internal API

Information on changing the C API is available `in the developer guide`_

.. _in the developer guide: https://devguide.python.org/c-api/
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