[Python-Dev] Fwd: [Python-checkins] r43358 - python/trunk/Modules/itertoolsmodule.c (original) (raw)

Tim Peters tim.peters at gmail.com
Wed Mar 29 02:26:27 CEST 2006

[Thomas Wouters] ...

not to mention avoiding finalizers on other builtin objects. (None seem to have them at the moment, they all do their stuff in tpdealloc,

Right, generators are the only exception now (and there were no exceptions before 2.5).

which I guess doesn't allow objects to reincarnate themselves.)

This is the actual rule: tp_dealloc must not do anything that could confuse cyclic gc <0.5 wink>. I'm afraid that's the best writeup there is. If you have a few spare weeks, try to figure out exactly why subtype_dealloc() does what it does ;-)

... I'll see about fixing the Python code to avoid or explicitly break the cycles.

Or giving gc more smarts about generators specifically (see Phillip's msg).

Maybe we can patch regrtest.py to take into account uncollectable cycles, so that it could report them separately from refleaks. I'm going to think about all this first, though.

Hrrm-hrrm'ly y'rs, -- Hi! I'm a finalizer virus! copy me into your tpdel slot to help me spread!

LOL! Nice variation.

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