From: "Stefan Monnier <foo@acm.com>" <monnier+gnu.emacs.help/news/@flint.cs.yale.edu>
Subject: Re: garbace collection of point-markers
Date: 31 Jan 2003 12:21:01 -0500 [thread overview]
Message-ID: <5lptqd5j7m.fsf@rum.cs.yale.edu> (raw)
In-Reply-To: Kgx_9.15$is4.391@paloalto-snr1.gtei.net
>>>>> "Barry" == Barry Margolin <barmar@genuity.net> writes:
> Your test seems to show that the markers are *not* cleaned up by the GC.
They definitely should. If they're not, it's a bug.
In the example posted by Pascal, it might simply be that the marker
is still referenced from the stack (more specifically, from a stack slot
which is actually dead, but the GC doesn't know it).
> Buffers keep track of the markers that point to them (so that they can be
> updated when the buffer is modified), and that keeps them from becoming
> garbage until the buffer is killed. This would be an ideal application for
> "weak" references if Emacs Lisp had them, but AFAIK it doesn't.
Markers have been handled "weakly" for a long time and Emacs-21
additionally introduced weak hash tables. So, AFAIK it does ;-)
Stefan
next prev parent reply other threads:[~2003-01-31 17:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-31 8:49 garbace collection of point-markers Stefan Kamphausen
2003-01-31 10:10 ` Pascal Bourguignon
2003-01-31 15:18 ` Kai Großjohann
2003-01-31 19:51 ` Pascal Bourguignon
2003-01-31 20:17 ` Barry Margolin
2003-02-01 4:00 ` Pascal Bourguignon
2003-01-31 16:13 ` Barry Margolin
2003-01-31 17:21 ` Stefan Monnier <foo@acm.com> [this message]
2003-02-03 18:04 ` Stefan Kamphausen
2003-01-31 19:02 ` Kevin Rodgers
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