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bpo-45340: Don't create object dictionaries unless actually needed (GH-28802)

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* Never change types' cached keys. It could invalidate inline attribute objects.

* Lazily create object dictionaries.

* Update specialization of LOAD/STORE_ATTR.

* Don't update shared keys version for deletion of value.

* Update gdb support to handle instance values.

* Rename SPLIT_KEYS opcodes to INSTANCE_VALUE.
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Mark Shannon 2021-10-13 14:19:34 +01:00 • committed by GitHub
parent 97308dfcdc
commit a8b9350964
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18 changed files with 721 additions and 400 deletions
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10
Include/internal/pycore_object.h
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@ -181,6 +181,16 @@ extern int _Py_CheckSlotResult(
extern PyObject* _PyType_AllocNoTrack(PyTypeObject *type, Py_ssize_t nitems);
extern int _PyObject_InitializeDict(PyObject *obj);
extern int _PyObject_StoreInstanceAttribute(PyObject *obj, PyDictValues *values,
PyObject *name, PyObject *value);
PyObject * _PyObject_GetInstanceAttribute(PyObject *obj, PyDictValues *values,
PyObject *name);
PyDictValues ** _PyObject_ValuesPointer(PyObject *);
PyObject ** _PyObject_DictPointer(PyObject *);
int _PyObject_VisitInstanceAttributes(PyObject *self, visitproc visit, void *arg);
void _PyObject_ClearInstanceAttributes(PyObject *self);
void _PyObject_FreeInstanceAttributes(PyObject *self);
int _PyObject_IsInstanceDictEmpty(PyObject *);
#ifdef __cplusplus
}