From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: Lisp object that refers to a C struct
Date: Wed, 17 Oct 2012 16:27:39 -0400 [thread overview]
Message-ID: <jwv7gqoj18o.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83k3up2iem.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 17 Oct 2012 18:05:37 +0200")
>> The code to free the C struct will be the one you write
>> specifically for it, nobody else knows how to free it.
> Then the code that GC's this new Lisp object will have to be entirely
> specific to the layout of the struct I'm using, right?
I said "free" not "GC's". The GC decide what to free, and takes care of
freeing most of the objects in the heap. The code that frees
the Lisp_Misc file-watcher will be the generic GC code. And that
generic code will have to trigger your specific code that frees the
C struct.
> It won't be suitable even for the similar-but-different inotify code,
> right?
Depends, you can make it generic by having the Lisp_Misc object have
2 slots: one containing the pointer to the C struct and another pointing
to the matching freeing function.
Stefan
next prev parent reply other threads:[~2012-10-17 20:27 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-15 21:24 Lisp object that refers to a C struct Eli Zaretskii
2012-10-16 1:07 ` Stefan Monnier
2012-10-16 3:53 ` Eli Zaretskii
2012-10-16 13:11 ` Stefan Monnier
2012-10-16 17:22 ` Eli Zaretskii
2012-10-16 21:43 ` Stefan Monnier
2012-10-17 4:05 ` Eli Zaretskii
2012-10-17 6:21 ` Stephen J. Turnbull
2012-10-17 15:50 ` Eli Zaretskii
2012-10-17 17:45 ` Stephen J. Turnbull
2012-10-17 13:34 ` Stefan Monnier
2012-10-17 16:08 ` Eli Zaretskii
2012-10-17 20:23 ` Stefan Monnier
2012-10-17 20:46 ` Eli Zaretskii
2012-10-17 22:08 ` Paul Eggert
2012-10-18 0:22 ` Stefan Monnier
2012-10-18 3:43 ` Stephen J. Turnbull
2012-10-18 4:50 ` Eli Zaretskii
2012-10-18 7:20 ` Paul Eggert
2012-10-18 11:09 ` Eli Zaretskii
2012-10-18 16:42 ` Paul Eggert
2012-10-18 17:21 ` Eli Zaretskii
2012-10-18 8:52 ` Juanma Barranquero
2012-10-18 11:17 ` Eli Zaretskii
2012-10-18 12:33 ` Stefan Monnier
2012-10-18 17:16 ` Eli Zaretskii
2012-10-18 22:09 ` Stefan Monnier
2012-10-19 7:14 ` Eli Zaretskii
2012-10-19 14:44 ` Stefan Monnier
2012-10-19 18:54 ` Eli Zaretskii
2012-10-19 21:35 ` Stefan Monnier
2012-10-19 22:35 ` Eli Zaretskii
2012-10-20 1:52 ` Stefan Monnier
2012-10-20 8:34 ` Eli Zaretskii
2012-10-17 16:05 ` Eli Zaretskii
2012-10-17 16:59 ` Davis Herring
2012-10-17 20:27 ` Stefan Monnier [this message]
2012-10-17 21:02 ` Eli Zaretskii
2012-10-18 0:23 ` Stefan Monnier
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