Commit Graph

3 Commits

Author SHA1 Message Date
Sam Gross 4dc27bc0b7
[3.13] gh-119344: Make critical section API public (GH-119353) (#120856)
This makes the following macros public as part of the non-limited C-API for
locking a single object or two objects at once.

* `Py_BEGIN_CRITICAL_SECTION(op)` / `Py_END_CRITICAL_SECTION()`
* `Py_BEGIN_CRITICAL_SECTION2(a, b)` / `Py_END_CRITICAL_SECTION2()`

The supporting functions and structs used by the macros are also exposed for
cases where C macros are not available.
(cherry picked from commit 8f17d69b7b)
2024-06-21 20:20:41 +00:00
Sam Gross 3cb6c4cd60
[3.13] gh-117511: Make PyMutex public in the non-limited API (GH-117731) (#120800)
(cherry picked from commit 3af7263037)
2024-06-20 16:00:25 +00:00
Sam Gross 31c90d5838
gh-111569: Implement Python critical section API (gh-111571)
Critical sections are helpers to replace the global interpreter lock
with finer grained locking.  They provide similar guarantees to the GIL
and avoid the deadlock risk that plain locking involves.  Critical
sections are implicitly ended whenever the GIL would be released.  They
are resumed when the GIL would be acquired.  Nested critical sections
behave as if the sections were interleaved.
2023-11-08 15:39:29 -07:00