New submission from Mark Shannon <m...@hotpy.org>:
We can remove the C stack use and general overhead of calling special methods implemented in Python for attribute access and indexing. Each operation has a special method that implements it. When that special method is implemented in Python, we should avoid the `tp_xxx` slot machinery and use the same mechanism we use for normal calls to Python functions. * BINARY_SUBSCR: `__getitem__` * STORE_SUBSCR: `__setitem__` * LOAD_ATTR: `__getattribute__` (and maybe `__getattr__`) * STORE_ATTR: `__setattr__` It probably isn't worth bothering with the deletion forms. The getters (`__getitem__` and `__getattribute__`) are relatively simple, as the call returns the result. The setters are a bit more complicated as the return value needs to be discarded, so an additional frame which discards the result of the call needs to be inserted. ---------- assignee: Mark.Shannon components: Interpreter Core messages: 406461 nosy: Mark.Shannon, brandtbucher, pablogsal priority: normal severity: normal status: open title: Remove C stack use by specializing BINARY_SUBSCR, STORE_SUBSCR, LOAD_ATTR, and STORE_ATTR type: performance versions: Python 3.11 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue45829> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
