Commit Graph

7 Commits

Author SHA1 Message Date
Irit Katriel 4c87537efb
gh-102192: Replace PyErr_Fetch/Restore etc by more efficient alternatives (in Python/) (#102193) 2023-02-28 11:50:52 +00:00
Eric Snow e11fc032a7
gh-59956: Clarify Runtime State Status Expectations (gh-101308)
A PyThreadState can be in one of many states in its lifecycle, represented by some status value.  Those statuses haven't been particularly clear, so we're addressing that here.  Specifically:

* made the distinct lifecycle statuses clear on PyThreadState
* identified expectations of how various lifecycle-related functions relate to status
* noted the various places where those expectations don't match the actual behavior

At some point we'll need to address the mismatches.

(This change also includes some cleanup.)

https://github.com/python/cpython/issues/59956
2023-01-30 12:07:48 -07:00
Eric Snow 6036c3e856
gh-59956: Clarify GILState-related Code (gh-101161)
The objective of this change is to help make the GILState-related code easier to understand.  This mostly involves moving code around and some semantically equivalent refactors.  However, there are a also a small number of slight changes in structure and behavior:

* tstate_current is moved out of _PyRuntimeState.gilstate
* autoTSSkey is moved out of _PyRuntimeState.gilstate
* autoTSSkey is initialized earlier
* autoTSSkey is re-initialized (after fork) earlier

https://github.com/python/cpython/issues/59956
2023-01-19 16:04:14 -07:00
Eric Snow 5f55067e23
gh-81057: Move More Globals in Core Code to _PyRuntimeState (gh-99516)
https://github.com/python/cpython/issues/81057
2022-11-16 09:37:14 -07:00
Pablo Galindo Salgado 83eb827247
gh-97922: Run the GC only on eval breaker (#97920) 2022-10-08 07:57:09 -07:00
Victor Stinner 04f4977f50
gh-96387: take_gil() resets drop request before exit (#96869)
At Python exit, sometimes a thread holding the GIL can wait forever
for a thread (usually a daemon thread) which requested to drop the
GIL, whereas the thread already exited. To fix the race condition,
the thread which requested the GIL drop now resets its request before
exiting.

take_gil() now calls RESET_GIL_DROP_REQUEST() before
PyThread_exit_thread() if it called SET_GIL_DROP_REQUEST to fix a
race condition with drop_gil().

Issue discovered and analyzed by Mingliang ZHAO.
2022-09-20 00:13:56 +02:00
Mark Shannon a4a9f2e879
GH-96177: Move GIL and eval breaker code out of ceval.c into ceval_gil.c. (GH-96204) 2022-08-24 14:21:01 +01:00