8000 gh-132013: use relaxed atomics in hash of frozenset by kumaraditya303 · Pull Request #132014 · python/cpython · GitHub
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gh-132013: use relaxed atomics in hash of frozenset #132014

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merged 1 commit into from
Apr 2, 2025
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gh-132013: use relaxed atomics in hash of frozenset #132014

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6 changes: 3 additions & 3 deletions Objects/setobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -793,12 +793,12 @@ frozenset_hash(PyObject *self)
PySetObject *so = _PySet_CAST(self);
Py_uhash_t hash;

if (so->hash != -1) {
return so->hash;
if (FT_ATOMIC_LOAD_SSIZE_RELAXED(so->hash) != -1) {
return FT_ATOMIC_LOAD_SSIZE_RELAXED(so->hash);
}

hash = frozenset_hash_impl(self);
so->hash = hash;
FT_ATOMIC_STORE_SSIZE_RELAXED(so->hash, hash);
return hash;
}

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