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cpython/Include
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Eric Snow 8ba4df91ae
gh-105699: Use a _Py_hashtable_t for the PyModuleDef Cache (gh-106974) 
This fixes a crasher due to a race condition, triggered infrequently when two isolated (own GIL) subinterpreters simultaneously initialize their sys or builtins modules.  The crash happened due the combination of the "detached" thread state we were using and the "last holder" logic we use for the GIL.  It turns out it's tricky to use the same thread state for different threads.  Who could have guessed?

We solve the problem by eliminating the one object we were still sharing between interpreters.  We replace it with a low-level hashtable, using the "raw" allocator to avoid tying it to the main interpreter.

We also remove the accommodations for "detached" thread states, which were a dubious idea to start with.
2023-07-28 14:39:08 -06:00
..
cpython gh-101524: Only Use Public C-API in the _xxsubinterpreters Module (gh-107359) 2023-07-27 15:30:16 -06:00
internal gh-105699: Use a _Py_hashtable_t for the PyModuleDef Cache (gh-106974) 2023-07-28 14:39:08 -06:00
abstract.h gh-106307: C API: Add PyMapping_GetOptionalItem() function (GH-106308) 2023-07-11 23:04:12 +03:00
bltinmodule.h
boolobject.h gh-84436: Implement Immortal Objects (gh-19474) 2023-04-22 13:39:37 -06:00
bytearrayobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
bytesobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +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
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
errcode.h gh-107162: Document errcode.h usage in its comment (#107177) 2023-07-24 14:14:58 +00:00
exports.h gh-88267: Avoid DLL exporting functions from static builds on Windows(GH-99888) 2022-12-09 11:16:15 +00:00
fileobject.h gh-106320: Remove _PyIsSelectable_fd() C API (#107142) 2023-07-23 19:07:12 +00:00
fileutils.h
floatobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
frameobject.h
genericaliasobject.h
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
iterobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
listobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
longobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
marshal.h
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-107226: PyModule_AddObjectRef() should only be in the limited API 3.10 (GH-107227) 2023-07-25 22:01:45 +03:00
moduleobject.h gh-106320: Remove private _PyModule API (#107070) 2023-07-22 21:41:11 +00:00
object.h gh-105059: Fix MSCV compiler warning on PyObject union (#107239) 2023-07-25 16:45:38 +02:00
objimpl.h gh-102013: Add PyUnstable_GC_VisitObjects (#102014) 2023-03-14 01:35:54 +00:00
opcode.h GH-100288: Specialize LOAD_ATTR for simple class attributes. (#105990) 2023-07-10 11:40:35 +01:00
osdefs.h
osmodule.h
patchlevel.h Python 3.13.0a0 2023-05-22 21:15:32 +02:00
py_curses.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
pybuffer.h gh-102500: Implement PEP 688 (#102521) 2023-05-04 07:59:46 -07:00
pycapsule.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
pydtrace.d
pydtrace.h Fix pydtrace.d path comment in Include/pydtrace.h (#28539) 2022-12-31 22:40:25 +05:30
pyerrors.h GH-101578: Normalize the current exception (GH-101607) 2023-02-08 09:31:12 +00:00
pyexpat.h
pyframe.h gh-93937, C API: Move PyFrame_GetBack() to Python.h (#93938) 2022-06-19 12:02:33 +02:00
pyhash.h gh-106320: Move private _PyHash API to the internal C API (#107026) 2023-07-22 13:49:37 +00:00
pylifecycle.h gh-105145: Deprecate Py_GetPath() function (#105179) 2023-06-01 12:06:32 +00:00
pymacconfig.h gh-93202: Always use %zd printf formatter (#93201) 2022-05-25 14:21:36 +02:00
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-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
pyport.h gh-103509: PEP 697 -- Limited C API for Extending Opaque Types (GH-103511) 2023-05-04 09:56:53 +02:00
pystate.h bpo-45459: C API uses type names rather than structure names (GH-31528) 2022-02-24 17:51:59 +01:00
pystats.h gh-104584: Baby steps towards generating and executing traces (#105924) 2023-06-26 19:02:57 -07:00
pystrcmp.h
pystrtod.h bpo-45995: add "z" format specifer to coerce negative 0 to zero (GH-30049) 2022-04-11 15:34:18 +01:00
Python.h gh-106320: Remove private _PyTraceMalloc C API functions (#106324) 2023-07-02 00:49:18 +00:00
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 bpo-42047: Add native thread ID for DragonFlyBSD (#22714) 2022-05-18 15:10:10 +02:00
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-105145: Deprecate Py_GetPath() function (#105179) 2023-06-01 12:06:32 +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
unicodeobject.h Fix typo in "expected" word in few source files (#104034) 2023-05-01 09:45:50 -06:00
warnings.h
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/