[Python-Dev] reference leaks, __del__, and annotations

[Thomas Wouters]

On 4/1/06, Nick Coghlan <ncoghlan at gmail.com> wrote:
>
> Greg Ewing wrote:
> > I find it rather worrying that there could be a
> > few rare cases in which my generators cause
> > memory leaks, through no fault of my own and
> > without my being able to do anything about it.
>
> The GC changes PJE is looking at are to make sure you *can* do something
> about
> it. If the generator hasn't been started, or has already finished, then
> the GC
> won't consider it as needing finalisation.


Actually, if a generator has already finished, it no longer holds a
suspended frame alive, and there is no cycle (at least not through the
generator.) That's why test_generators no longer leaks; explicitly closing
the generator breaks the cycle. So the only thing fixing GC would add is
cleaning up cycles where a created but not started generator is the only
thing keeping the cycle alive.

--
Thomas Wouters <thomas at python.org>

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