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bpo-39877: _PyRuntimeState.finalizing becomes atomic (GH-18816)

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Convert _PyRuntimeState.finalizing field to an atomic variable:

* Rename it to _finalizing
* Change its type to _Py_atomic_address
* Add _PyRuntimeState_GetFinalizing() and _PyRuntimeState_SetFinalizing()
  functions
* Remove _Py_CURRENTLY_FINALIZING() function: replace it with testing
  directly _PyRuntimeState_GetFinalizing() value

Convert _PyRuntimeState_GetThreadState() to static inline function.
This commit is contained in:
Victor Stinner 2020-03-07 00:24:23 +01:00 • committed by GitHub
parent 557287075c
commit 7b3c252dc7
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5 changed files with 29 additions and 15 deletions
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Python/sysmodule.c
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@ -289,8 +289,9 @@ _PySys_ClearAuditHooks(void)
/* Must be finalizing to clear hooks */
_PyRuntimeState *runtime = &_PyRuntime;
PyThreadState *ts = _PyRuntimeState_GetThreadState(runtime);
assert(!ts || _Py_CURRENTLY_FINALIZING(runtime, ts));
if (!ts || !_Py_CURRENTLY_FINALIZING(runtime, ts)) {
PyThreadState *finalizing = _PyRuntimeState_GetFinalizing(runtime);
assert(!ts || finalizing == ts);
if (!ts || finalizing != ts) {
return;
}