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gh-59956: Clarify GILState-related Code (gh-101161)

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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
This commit is contained in:
Eric Snow 2023-01-19 16:04:14 -07:00 • committed by GitHub
parent 8a2d4f4e8e
commit 6036c3e856
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10 changed files with 373 additions and 250 deletions
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7
Modules/posixmodule.c
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@ -587,7 +587,7 @@ PyOS_AfterFork_Child(void)
PyStatus status;
_PyRuntimeState *runtime = &_PyRuntime;
status = _PyGILState_Reinit(runtime);
status = _PyRuntimeState_ReInitThreads(runtime);
if (_PyStatus_EXCEPTION(status)) {
goto fatal_error;
}
@ -611,11 +611,6 @@ PyOS_AfterFork_Child(void)
_PySignal_AfterFork();
status = _PyRuntimeState_ReInitThreads(runtime);
if (_PyStatus_EXCEPTION(status)) {
goto fatal_error;
}
status = _PyInterpreterState_DeleteExceptMain(runtime);
if (_PyStatus_EXCEPTION(status)) {
goto fatal_error;