bpo-39877: _PyRuntimeState.finalizing becomes atomic (GH-18816)
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.
diff --git a/Python/ceval.c b/Python/ceval.c
index ef4aac2..20e32e2 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -240,7 +240,8 @@
{
_PyRuntimeState *runtime = tstate->interp->runtime;
/* _Py_Finalizing is protected by the GIL */
- if (runtime->finalizing != NULL && !_Py_CURRENTLY_FINALIZING(runtime, tstate)) {
+ PyThreadState *finalizing = _PyRuntimeState_GetFinalizing(runtime);
+ if (finalizing != NULL && finalizing != tstate) {
drop_gil(&runtime->ceval, tstate);
PyThread_exit_thread();
}