423 _abc__abc_register_impl(PyObject *module, PyObject *self, PyObject *subclass)  in _abc__abc_register_impl()  argument
426     if (!PyType_Check(subclass)) {  in _abc__abc_register_impl()
430     int result = PyObject_IsSubclass(subclass, self);  in _abc__abc_register_impl()
432         Py_INCREF(subclass);  in _abc__abc_register_impl()
433         return subclass;  /* Already a subclass. */  in _abc__abc_register_impl()
440     result = PyObject_IsSubclass(self, subclass);  in _abc__abc_register_impl()
453     if (_add_to_weak_set(&impl->_abc_registry, subclass) < 0) {  in _abc__abc_register_impl()
462     Py_INCREF(subclass);  in _abc__abc_register_impl()
463     return subclass;  in _abc__abc_register_impl()
482     PyObject *subtype, *result = NULL, *subclass = NULL;  in _abc__abc_instancecheck_impl()  local
488     subclass = _PyObject_GetAttrId(instance, &PyId___class__);  in _abc__abc_instancecheck_impl()
489     if (subclass == NULL) {  in _abc__abc_instancecheck_impl()
494     int incache = _in_weak_set(impl->_abc_cache, subclass);  in _abc__abc_instancecheck_impl()
504     if (subtype == subclass) {  in _abc__abc_instancecheck_impl()
506             incache = _in_weak_set(impl->_abc_negative_cache, subclass);  in _abc__abc_instancecheck_impl()
518                                                subclass, NULL);  in _abc__abc_instancecheck_impl()
522                                            subclass, NULL);  in _abc__abc_instancecheck_impl()
545     Py_XDECREF(subclass);  in _abc__abc_instancecheck_impl()
553 static int subclasscheck_check_registry(_abc_data *impl, PyObject *subclass,
568                              PyObject *subclass)  in _abc__abc_subclasscheck_impl()  argument
571     if (!PyType_Check(subclass)) {  in _abc__abc_subclasscheck_impl()
585     incache = _in_weak_set(impl->_abc_cache, subclass);  in _abc__abc_subclasscheck_impl()
605         incache = _in_weak_set(impl->_abc_negative_cache, subclass);  in _abc__abc_subclasscheck_impl()
617                                        subclass, NULL);  in _abc__abc_subclasscheck_impl()
623         if (_add_to_weak_set(&impl->_abc_cache, subclass) < 0) {  in _abc__abc_subclasscheck_impl()
631         if (_add_to_weak_set(&impl->_abc_negative_cache, subclass) < 0) {  in _abc__abc_subclasscheck_impl()
646     PyObject *mro = ((PyTypeObject *)subclass)->tp_mro;  in _abc__abc_subclasscheck_impl()
652             if (_add_to_weak_set(&impl->_abc_cache, subclass) < 0) {  in _abc__abc_subclasscheck_impl()
661     if (subclasscheck_check_registry(impl, subclass, &result)) {  in _abc__abc_subclasscheck_impl()
678         int r = PyObject_IsSubclass(subclass, scls);  in _abc__abc_subclasscheck_impl()
681             if (_add_to_weak_set(&impl->_abc_cache, subclass) < 0) {  in _abc__abc_subclasscheck_impl()
693     if (_add_to_weak_set(&impl->_abc_negative_cache, subclass) < 0) {  in _abc__abc_subclasscheck_impl()
707 subclasscheck_check_registry(_abc_data *impl, PyObject *subclass,  in subclasscheck_check_registry()  argument
711     int ret = _in_weak_set(impl->_abc_registry, subclass);  in subclasscheck_check_registry()
757         int r = PyObject_IsSubclass(subclass, rkey);  in subclasscheck_check_registry()
764             if (_add_to_weak_set(&impl->_abc_cache, subclass) < 0) {  in subclasscheck_check_registry()