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Sam Gross a3c031884d
gh-112723: Call PyThreadState_Clear() from the correct interpreter (#112776) 
The `PyThreadState_Clear()` function must only be called with the GIL
held and must be called from the same interpreter as the passed in
thread state. Otherwise, any Python objects on the thread state may be
destroyed using the wrong interpreter, leading to memory corruption.

This is also important for `Py_GIL_DISABLED` builds because free lists
will be associated with PyThreadStates and cleared in
`PyThreadState_Clear()`.

This fixes two places that called `PyThreadState_Clear()` from the wrong
interpreter and adds an assertion to `PyThreadState_Clear()`.
2023-12-12 17:20:21 -07:00
..
cpython gh-112320: Implement on-trace confidence tracking for branches (#112321) 2023-12-12 21:43:08 +00:00
internal gh-112723: Call PyThreadState_Clear() from the correct interpreter (#112776) 2023-12-12 17:20:21 -07:00
abstract.h gh-108511: Add C API functions which do not silently ignore errors (GH-109025) 2023-09-17 14:23:31 +03:00
bltinmodule.h these builtins have to be initialized 2009-05-09 18:10:51 +00:00
boolobject.h gh-106560: Fix redundant declarations in Include/ (#112611) 2023-12-03 12:16:31 +01:00
bytearrayobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
bytesobject.h gh-108765: Move standard includes to Python.h (#108769) 2023-09-01 21:03:20 +02:00
ceval.h gh-105182: Remove PyEval_AcquireLock() and PyEval_InitThreads() (#105183) 2023-06-01 13:41:56 +02:00
codecs.h Remove private _PyCodec_Lookup() function (#106269) 2023-06-30 09:34:01 +00:00
compile.h gh-109596: Ensure repeated rules in the grammar are not allowed and fix incorrect soft keywords (#109606) 2023-09-22 19:03:23 +01:00
complexobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
datetime.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
descrobject.h gh-103509: PEP 697 -- Limited C API for Extending Opaque Types (GH-103511) 2023-05-04 09:56:53 +02:00
dictobject.h gh-106004: PyDict_GetItemRef() should only be in the limited API 3.13 (GH-107229) 2023-07-25 21:48:07 +03:00
dynamic_annotations.h gh-96959: Update HTTP links which are redirected to HTTPS (GH-96961) 2022-09-24 14:38:53 +03:00
enumobject.h Implement and apply PEP 322, reverse iteration 2003-11-06 14:06:48 +00:00
errcode.h gh-107450: Check for overflow in the tokenizer and fix overflow test (#110832) 2023-10-16 16:42:49 +02:00
exports.h gh-108765: Move export code from pyport.h to exports.h (#108855) 2023-09-04 01:04:05 +02:00
fileobject.h gh-106320: Remove _PyIsSelectable_fd() C API (#107142) 2023-07-23 19:07:12 +00:00
fileutils.h gh-108765: Move stat() fiddling from pyport.h to fileutils.h (#108854) 2023-09-03 21:32:13 +00:00
floatobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
frameobject.h bpo-45434: Remove useless space in includes (GH-28963) 2021-10-15 01:50:04 +02:00
genericaliasobject.h bpo-44654: Refactor and clean up the union type implementation (GH-27196) 2021-07-17 22:44:10 +03:00
import.h gh-105922: Add PyImport_AddModuleRef() function (#105923) 2023-06-20 08:48:14 +02:00
interpreteridobject.h gh-101524: Only Use Public C-API in the _xxsubinterpreters Module (gh-107359) 2023-07-27 15:30:16 -06:00
intrcheck.h gh-106320: Remove private _PyOS_IsMainThread() function (#108605) 2023-08-29 03:20:31 +00:00
iterobject.h gh-106320: Remove _PyAnextAwaitable_Type from the public C API (#108597) 2023-08-29 02:05:11 +00:00
listobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
longobject.h gh-106560: Fix redundant declarations in Include/ (#112611) 2023-12-03 12:16:31 +01:00
marshal.h bpo-45474: Exclude all of marshal.h if Py_LIMITED_API is defined (GH-29061) 2021-10-20 02:32:14 -07:00
memoryobject.h gh-79315: Add Include/cpython/memoryobject.h header (#99723) 2022-11-23 15:44:42 +01:00
methodobject.h gh-105107: Remove PyCFunction_Call() function (#105181) 2023-06-01 11:25:55 +02:00
modsupport.h gh-65210: Add const qualifiers in PyArg_VaParseTupleAndKeywords() (GH-105958) 2023-12-04 13:14:56 +02:00
moduleobject.h gh-111698: Restrict Py_mod_multiple_interpreters to 3.12+ Under Py_LIMITED_API (gh-111707) 2023-11-06 09:34:57 -07:00
object.h gh-112535: Update _Py_ThreadId() to support s390/s390x (gh-112751) 2023-12-08 23:28:07 +09:00
objimpl.h bpo-42519: Remove outdated sentence in comment (#112822) 2023-12-07 14:24:11 +01:00
opcode.h gh-105481: opcode.h is no longer generated during the build (#108080) 2023-08-17 17:07:58 +01:00
opcode_ids.h GH-111485: Factor out tier 2 code generation from the rest of the interpreter code generator (GH-112968) 2023-12-12 12:12:17 +00:00
osdefs.h gh-108765: Reformat Include/osdefs.h (#108766) 2023-09-01 14:35:39 +00:00
osmodule.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
patchlevel.h Post 3.13.0a2 2023-11-22 22:24:48 +01:00
py_curses.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
pyatomic.h gh-108724: Add PyMutex and _PyParkingLot APIs (gh-109344) 2023-09-19 09:54:29 -06:00
pybuffer.h gh-102500: Implement PEP 688 (#102521) 2023-05-04 07:59:46 -07:00
pycapsule.h gh-108240: Add pycore_capsule.h internal header file (#108596) 2023-08-29 01:20:02 +00:00
pydtrace.d bpo-36842: Implement PEP 578 (GH-12613) 2019-05-23 08:45:22 -07:00
pydtrace.h Fix pydtrace.d path comment in Include/pydtrace.h (#28539) 2022-12-31 22:40:25 +05:30
pyerrors.h gh-108765: Move standard includes to Python.h (#108769) 2023-09-01 21:03:20 +02:00
pyexpat.h bpo-34623: Use XML_SetHashSalt in _elementtree (GH-9146) 2018-09-18 05:38:58 -07:00
pyframe.h gh-93937, C API: Move PyFrame_GetBack() to Python.h (#93938) 2022-06-19 12:02:33 +02:00
pyhash.h gh-111545: Add Include/cpython/pyhash.h header file (#112063) 2023-11-15 01:19:20 +01:00
pylifecycle.h gh-110397: Add Py_IsFinalizing() to the stable ABI (#110441) 2023-10-07 17:59:16 +02:00
pymacconfig.h gh-110820: Make sure processor specific defines are correct for Universal 2 build on macOS (#112828) 2023-12-08 10:09:34 +01:00
pymacro.h gh-107249: Implement Py_UNUSED() for MSVC (#107250) 2023-07-25 19:28:16 +02:00
pymath.h gh-104263: Rely on Py_NAN and introduce Py_INFINITY (GH-104202) 2023-05-10 17:44:52 +01:00
pymem.h gh-85283: Add PyMem_RawMalloc() to the limited C API (#108570) 2023-10-17 02:41:51 +02:00
pyport.h gh-65210: Add const qualifiers in PyArg_VaParseTupleAndKeywords() (GH-105958) 2023-12-04 13:14:56 +02:00
pystate.h gh-108867: Add PyThreadState_GetUnchecked() function (#108870) 2023-10-03 16:53:51 +00:00
pystats.h gh-108753: Enhance pystats (#108754) 2023-09-06 15:54:59 +00:00
pystrcmp.h Merged revisions 59541-59561 via svnmerge from 2007-12-19 02:07:34 +00:00
pystrtod.h gh-106320: Remove private float C API functions (#108430) 2023-08-24 19:09:49 +02:00
Python.h gh-112026: Add again <unistd.h> include in Python.h (#112046) 2023-11-15 16:59:32 +01:00
pythonrun.h gh-102755: PyErr_DisplayException only in ABI >= 3.12. Tests cover PyErr_Display as well (GH-102849) 2023-03-21 10:36:18 +01:00
pythread.h gh-81925: Implement native thread ids for kFreeBSD (#111761) 2023-11-09 21:02:30 +01:00
pytypedefs.h bpo-45459: Fix PyModuleDef_Slot type in the limited C API (GH-31668) 2022-03-03 23:06:55 +01:00
rangeobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
README.rst gh-101101: Unstable C API tier (PEP 689) (GH-101102) 2023-02-28 09:31:01 +01:00
setobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
sliceobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
structmember.h gh-47146: Soft-deprecate structmember.h, expose its contents via Python.h (GH-99014) 2022-11-22 08:25:43 +01:00
structseq.h gh-106168: PyTuple_SET_ITEM() now checks the index (#106164) 2023-06-28 03:45:57 +02:00
sysmodule.h gh-109587: Allow "precompiled" perf-trampolines to largely mitigate the cost of enabling perf-trampolines (#109666) 2023-10-27 03:57:29 +00:00
traceback.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
tupleobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
typeslots.h bpo-45459: Add Py_buffer to limited API (GH-29991) 2022-02-02 07:03:10 -08:00
unicodeobject.h gh-111089: Revert PyUnicode_AsUTF8() changes (#111833) 2023-11-07 22:36:13 +00:00
warnings.h bpo-35134: Split warnings.h and weakrefobject.h (GH-29042) 2021-10-19 01:31:57 +02:00
weakrefobject.h gh-105927: Deprecate PyWeakref_GetObject() function (#106006) 2023-06-26 12:10:53 +02:00

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/