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[3.14] gh-133980: use atomic store in PyObject_GenericSetDict (GH-133988) (#134354)

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gh-133980: use atomic store in `PyObject_GenericSetDict` (GH-133988)
(cherry picked from commit ec39fd2c20)

Co-authored-by: Kumar Aditya <kumaraditya@python.org>
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Miss Islington (bot) 2025-05-21 11:36:39 +02:00 • committed by GitHub
parent b0bf48a134
commit 87d7a19ef0
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2 changed files with 23 additions and 1 deletions
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Objects/object.c
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@ -1931,7 +1931,13 @@ PyObject_GenericSetDict(PyObject *obj, PyObject *value, void *context)
return -1;
}
Py_BEGIN_CRITICAL_SECTION(obj);
Py_XSETREF(*dictptr, Py_NewRef(value));
PyObject *olddict = *dictptr;
FT_ATOMIC_STORE_PTR_RELEASE(*dictptr, Py_NewRef(value));
#ifdef Py_GIL_DISABLED
_PyObject_XDecRefDelayed(olddict);
#else
Py_XDECREF(olddict);
#endif
Py_END_CRITICAL_SECTION();
return 0;
}