diff options
| -rw-r--r-- | Objects/typeobject.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Objects/typeobject.c b/Objects/typeobject.c index f46734b..020cbf2 100644 --- a/Objects/typeobject.c +++ b/Objects/typeobject.c @@ -4081,6 +4081,28 @@ update_one_slot(PyTypeObject *type, slotdef *p) use_generic = 1; } } + else if (descr->ob_type == &PyCFunction_Type && + PyCFunction_GET_FUNCTION(descr) == + (PyCFunction)tp_new_wrapper && + strcmp(p->name, "__new__") == 0) + { + /* The __new__ wrapper is not a wrapper descriptor, + so must be special-cased differently. + If we don't do this, creating an instance will + always use slot_tp_new which will look up + __new__ in the MRO which will call tp_new_wrapper + which will look through the base classes looking + for a static base and call its tp_new (usually + PyType_GenericNew), after performing various + sanity checks and constructing a new argument + list. Cut all that nonsense short -- this speeds + up instance creation tremendously. */ + specific = type->tp_new; + /* XXX I'm not 100% sure that there isn't a hole + in this reasoning that requires additional + sanity checks. I'll buy the first person to + point out a bug in this reasoning a beer. */ + } else { use_generic = 1; generic = p->function; |