gh-110014: Fix _POSIX_THREADS and _POSIX_SEMAPHORES usage (#110139)

* pycore_pythread.h is now the central place to make sure that
  _POSIX_THREADS and _POSIX_SEMAPHORES macros are defined if
  available.
* Make sure that pycore_pythread.h is included when _POSIX_THREADS
  and _POSIX_SEMAPHORES macros are tested.
* PY_TIMEOUT_MAX is now defined as a constant, since its value
  depends on _POSIX_THREADS, instead of being defined as a macro.
* Prevent integer overflow in the preprocessor when computing
  PY_TIMEOUT_MAX_VALUE on Windows:
  replace "0xFFFFFFFELL * 1000 < LLONG_MAX"
  with "0xFFFFFFFELL < LLONG_MAX / 1000".
* Document the change and give hints how to fix affected code.
* Add an exception for PY_TIMEOUT_MAX  name to smelly.py
* Add PY_TIMEOUT_MAX to the stable ABI
This commit is contained in:
Victor Stinner 2023-09-30 19:25:54 +02:00 committed by GitHub
parent f3bb00ea12
commit 74e425ec18
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13 changed files with 72 additions and 57 deletions

1
PC/python3dll.c generated
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@ -768,6 +768,7 @@ EXPORT_DATA(Py_FileSystemDefaultEncodeErrors)
EXPORT_DATA(Py_FileSystemDefaultEncoding)
EXPORT_DATA(Py_GenericAliasType)
EXPORT_DATA(Py_HasFileSystemDefaultEncoding)
EXPORT_DATA(PY_TIMEOUT_MAX)
EXPORT_DATA(Py_UTF8Mode)
EXPORT_DATA(Py_Version)
EXPORT_DATA(PyBaseObject_Type)