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gh-112075: Enable freeing with qsbr and fallback to lock on key changed (GH-116336)

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Dino Viehland 2024-03-05 01:08:18 -08:00 committed by GitHub
parent 7af063d1d8
commit ffcc450a9b
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1 changed files with 3 additions and 6 deletions
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9
Objects/dictobject.c
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@ -183,9 +183,6 @@ set_values(PyDictObject *mp, PyDictValues *values)
_Py_atomic_store_ptr_release(&mp->ma_values, values);
}
// Defined until we get QSBR
#define _PyMem_FreeQsbr PyMem_Free
#define LOCK_KEYS(keys) PyMutex_LockFlags(&keys->dk_mutex, _Py_LOCK_DONT_DETACH)
#define UNLOCK_KEYS(keys) PyMutex_Unlock(&keys->dk_mutex)
@ -806,7 +803,7 @@ free_keys_object(PyDictKeysObject *keys, bool use_qsbr)
{
#ifdef Py_GIL_DISABLED
if (use_qsbr) {
_PyMem_FreeQsbr(keys);
_PyMem_FreeDelayed(keys);
return;
}
#endif
@ -846,7 +843,7 @@ free_values(PyDictValues *values, bool use_qsbr)
int prefix_size = DICT_VALUES_SIZE(values);
#ifdef Py_GIL_DISABLED
if (use_qsbr) {
_PyMem_FreeQsbr(((char *)values)-prefix_size);
_PyMem_FreeDelayed(((char *)values)-prefix_size);
return;
}
#endif
@ -6694,7 +6691,7 @@ _PyObject_StoreInstanceAttribute(PyObject *obj, PyDictValues *values,
#ifdef Py_GIL_DISABLED
// Try a thread-safe lookup to see if the index is already allocated
ix = unicodekeys_lookup_unicode_threadsafe(keys, name, hash);
if (ix == DKIX_EMPTY) {
if (ix == DKIX_EMPTY || ix == DKIX_KEY_CHANGED) {
// Lock keys and do insert
LOCK_KEYS(keys);
ix = insert_into_splitdictkeys(keys, name, hash);