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Code Issues Releases Activity

GH-115775: Use __static_attributes__ to initialize shared keys (GH-118468)

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Mark Shannon 2024-08-27 10:34:46 +01:00 committed by GitHub
parent fe85a8291d
commit 89328f7b12
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GPG Key ID: B5690EEEBB952194
3 changed files with 18 additions and 3 deletions
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2
Include/internal/pycore_dict.h
View File

@ -83,7 +83,7 @@ typedef struct {
PyObject *me_value; /* This field is only meaningful for combined tables */
} PyDictUnicodeEntry;
extern PyDictKeysObject *_PyDict_NewKeysForClass(void);
extern PyDictKeysObject *_PyDict_NewKeysForClass(PyHeapTypeObject *);
extern PyObject *_PyDict_FromKeys(PyObject *, PyObject *, PyObject *);
/* Gets a version number unique to the current state of the keys of dict, if possible.

17
Objects/dictobject.c
View File

@ -6559,9 +6559,10 @@ dictvalues_reversed(PyObject *self, PyObject *Py_UNUSED(ignored))
/* Returns NULL if cannot allocate a new PyDictKeysObject,
but does not set an error */
PyDictKeysObject *
_PyDict_NewKeysForClass(void)
_PyDict_NewKeysForClass(PyHeapTypeObject *cls)
{
PyInterpreterState *interp = _PyInterpreterState_GET();
PyDictKeysObject *keys = new_keys_object(
interp, NEXT_LOG2_SHARED_KEYS_MAX_SIZE, 1);
if (keys == NULL) {
@ -6573,6 +6574,20 @@ _PyDict_NewKeysForClass(void)
keys->dk_usable = SHARED_KEYS_MAX_SIZE;
keys->dk_kind = DICT_KEYS_SPLIT;
}
if (cls->ht_type.tp_dict) {
PyObject *attrs = PyDict_GetItem(cls->ht_type.tp_dict, &_Py_ID(__static_attributes__));
if (attrs != NULL && PyTuple_Check(attrs)) {
for (Py_ssize_t i = 0; i < PyTuple_GET_SIZE(attrs); i++) {
PyObject *key = PyTuple_GET_ITEM(attrs, i);
Py_hash_t hash;
if (PyUnicode_CheckExact(key) && (hash = unicode_get_hash(key)) != -1) {
if (insert_split_key(keys, key, hash) == DKIX_EMPTY) {
break;
}
}
}
}
}
return keys;
}

2
Objects/typeobject.c
View File

@ -8334,7 +8334,7 @@ type_ready_managed_dict(PyTypeObject *type)
}
PyHeapTypeObject* et = (PyHeapTypeObject*)type;
if (et->ht_cached_keys == NULL) {
et->ht_cached_keys = _PyDict_NewKeysForClass();
et->ht_cached_keys = _PyDict_NewKeysForClass(et);
if (et->ht_cached_keys == NULL) {
PyErr_NoMemory();
return -1;