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gh-136421: Fix crash when _datetime is been initialized in multiple sub-interpreters #136422

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gh-136421: Fix crash when _datetime is been initialized in multiple sub-interpreters #136422

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f1e7225
Fix crash when _datetime is been initialized in multiple sub-interpre…
aisk Jul 8, 2025
b6735f6
Fix RST markers
aisk Jul 8, 2025
67cf8fd
Simplify the codes
aisk Jul 8, 2025
1637eb9
Increase mutex protect region
aisk Jul 12, 2025
d1b8728
Update Misc/NEWS.d/next/Core_and_Builtins/2025-07-08-23-00-58.gh-issu…
aisk Jul 12, 2025
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Core_and_Builtins/2025-07-08-23-00-58.gh-issue-136421.uzieFA.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Fix a crash when ``_datetime`` is being imported in multiple
sub-interpreters at the same time.
7 changes: 6 additions & 1 deletion Modules/_datetimemodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7344,11 +7344,16 @@ init_static_types(PyInterpreterState *interp, int reloading)

/* Bases classes must be initialized before subclasses,
* so capi_types must have the types in the appropriate order. */
static PyMutex mutex = {0};
for (size_t i = 0; i < Py_ARRAY_LENGTH(capi_types); i++) {
PyTypeObject *type = capi_types[i];
if (_PyStaticType_InitForExtension(interp, type) < 0) {
PyMutex_Lock(&mutex);
int ret = _PyStaticType_InitForExtension(interp, type);
if (ret < 0) {
PyMutex_Unlock(&mutex);
return -1;
}
PyMutex_Unlock(&mutex);
}

return 0;
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