From: Dmitry Antipov <dmantipov@yandex.ru>
To: Dan Nicolaescu <dann@gnu.org>
Cc: Emacs development discussions <emacs-devel@gnu.org>
Subject: Re: Note on 109327
Date: Tue, 31 Jul 2012 17:25:18 +0400 [thread overview]
Message-ID: <5017DCBE.6020606@yandex.ru> (raw)
In-Reply-To: <yxqwr1kf50j.fsf@fencepost.gnu.org>
On 07/31/2012 05:13 PM, Dan Nicolaescu wrote:
> What's the motivation for changes like:
> - f->icon_name = Qnil;
> + FVAR (f, icon_name) = Qnil;
> ?
>
> The new version looks more obfuscated ...
Yes. I'm always thinking about improving internal stuff, GC at first.
For me, the main motivation for BVAR, KVAR, FVAR etc. is the ability
to catch the moment when the pointer (e.g. Lisp_Object) within buffer,
or keyboard, of frame, etc. is read or written, which may be useful
to implement write barriers (see, for exmaple,
http://www.hoelzle.org/publications/write-barrier.pdf, but do not
get confused with http://en.wikipedia.org/wiki/Memory_barrier).
Dmitry
next prev parent reply other threads:[~2012-07-31 13:25 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-31 12:38 Note on 109327 Dmitry Antipov
2012-07-31 13:13 ` Dan Nicolaescu
2012-07-31 13:25 ` Dmitry Antipov [this message]
2012-07-31 13:33 ` Tom Tromey
2012-07-31 13:50 ` Dmitry Antipov
2012-07-31 21:47 ` Thien-Thi Nguyen
2012-08-01 4:34 ` Dmitry Antipov
2012-07-31 13:54 ` Juanma Barranquero
2012-07-31 17:04 ` Eli Zaretskii
2012-07-31 17:17 ` Juanma Barranquero
2012-07-31 17:35 ` joakim
2012-07-31 17:56 ` Dmitry Antipov
2012-07-31 17:42 ` Dmitry Antipov
2012-07-31 18:06 ` Refactoring in Emacs (was: Note on 109327) Eli Zaretskii
2012-08-01 4:14 ` Refactoring in Emacs Dmitry Antipov
2012-08-01 11:41 ` Refactoring in Emacs : CEDET Eric M. Ludlam
2012-08-01 14:50 ` Eli Zaretskii
2012-08-01 23:42 ` Eric Ludlam
2012-08-01 22:41 ` Refactoring in Emacs Richard Stallman
2012-08-01 14:05 ` Jason Rumney
2012-07-31 15:16 ` Note on 109327 Jan Djärv
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