From: Pip Cet via "Emacs development discussions." <emacs-devel@gnu.org>
To: "Gerd Möllmann" <gerd.moellmann@gmail.com>
Cc: Eli Zaretskii <eliz@gnu.org>,
ofv@wanadoo.es, emacs-devel@gnu.org, eller.helmut@gmail.com,
acorallo@gnu.org
Subject: Re: Some experience with the igc branch
Date: Tue, 24 Dec 2024 10:25:38 +0000 [thread overview]
Message-ID: <87bjx1bcp8.fsf@protonmail.com> (raw)
In-Reply-To: <m2zfklenhj.fsf@gmail.com>
Gerd Möllmann <gerd.moellmann@gmail.com> writes:
> New day, new beliefs :-). Today, when I read my question again, I'd
> actually be surprised if a signal handler could allocate Lisp objects
> because I wouldn't be able to explain how that works with alloc.c which
> isn't reentrant. Not even Fcons is reentrant when I look at it now.
>
> Correct, or am I overlooking something? Could others please check? If
> it's right, things get a lot easier.
I agree. But Eli said something about wanting to run Lisp from a signal
handler, which would change that. I was trying to explain why we don't
want to do that.
> Maybe allocation of Lisp objects on the stack remains as some sort of
> problem (AUTO_CONS etc)? I don't see how though, ATM.
Stack objects are always optional, so if there is code that attempts to
avoid alloc.c by using those, it's broken.
My current patch makes it so the main thread never takes the arena lock,
ever. Performance isn't quite the same as scratch/igc: for some reason
I don't understand, it's slightly better. Still needs cleanup,
de-pthreading, and we probably don't need to use atomic types
everywhere.
Pip
next prev parent reply other threads:[~2024-12-24 10:25 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-22 15:40 Some experience with the igc branch Óscar Fuentes
2024-12-22 17:18 ` Gerd Möllmann
2024-12-22 17:29 ` Gerd Möllmann
2024-12-22 17:41 ` Pip Cet via Emacs development discussions.
2024-12-22 17:56 ` Gerd Möllmann
2024-12-22 19:11 ` Óscar Fuentes
2024-12-23 0:05 ` Pip Cet via Emacs development discussions.
2024-12-23 1:00 ` Óscar Fuentes
2024-12-23 3:42 ` Gerd Möllmann
2024-12-23 6:27 ` Jean Louis
2024-12-22 20:29 ` Helmut Eller
2024-12-22 20:50 ` Gerd Möllmann
2024-12-22 22:26 ` Pip Cet via Emacs development discussions.
2024-12-23 3:23 ` Gerd Möllmann
[not found] ` <m234ieddeu.fsf_-_@gmail.com>
[not found] ` <87ttaueqp9.fsf@protonmail.com>
[not found] ` <m2frme921u.fsf@gmail.com>
[not found] ` <87ldw6ejkv.fsf@protonmail.com>
[not found] ` <m2bjx2h8dh.fsf@gmail.com>
2024-12-23 14:45 ` Make Signal handling patch platform-dependent? Pip Cet via Emacs development discussions.
2024-12-23 14:54 ` Gerd Möllmann
2024-12-23 15:11 ` Eli Zaretskii
2024-12-23 13:35 ` Some experience with the igc branch Eli Zaretskii
2024-12-23 14:03 ` Discussion with MPS people Gerd Möllmann
2024-12-23 14:04 ` Gerd Möllmann
2024-12-23 15:07 ` Some experience with the igc branch Pip Cet via Emacs development discussions.
2024-12-23 15:26 ` Gerd Möllmann
2024-12-23 16:03 ` Pip Cet via Emacs development discussions.
2024-12-23 16:44 ` Eli Zaretskii
2024-12-23 17:16 ` Pip Cet via Emacs development discussions.
2024-12-23 18:35 ` Eli Zaretskii
2024-12-23 18:48 ` Gerd Möllmann
2024-12-23 19:25 ` Eli Zaretskii
2024-12-23 20:30 ` Benjamin Riefenstahl
2024-12-23 23:39 ` Pip Cet via Emacs development discussions.
2024-12-24 12:14 ` Eli Zaretskii
2024-12-24 13:18 ` Pip Cet via Emacs development discussions.
2024-12-24 13:42 ` Benjamin Riefenstahl
2024-12-24 3:37 ` Eli Zaretskii
2024-12-24 8:48 ` Benjamin Riefenstahl
2024-12-24 13:52 ` Eli Zaretskii
2024-12-24 13:54 ` Benjamin Riefenstahl
2024-12-23 17:44 ` Gerd Möllmann
2024-12-23 19:00 ` Eli Zaretskii
2024-12-23 19:37 ` Eli Zaretskii
2024-12-23 20:49 ` Gerd Möllmann
2024-12-23 21:43 ` Helmut Eller
2024-12-23 21:49 ` Pip Cet via Emacs development discussions.
2024-12-23 21:58 ` Helmut Eller
2024-12-23 23:20 ` Pip Cet via Emacs development discussions.
2024-12-24 5:38 ` Helmut Eller
2024-12-24 6:27 ` Gerd Möllmann
2024-12-24 10:09 ` Pip Cet via Emacs development discussions.
2024-12-24 4:05 ` Gerd Möllmann
2024-12-24 8:50 ` Gerd Möllmann
2024-12-24 6:03 ` SIGPROF + SIGCHLD and igc Gerd Möllmann
2024-12-24 8:23 ` Helmut Eller
2024-12-24 8:39 ` Gerd Möllmann
2024-12-24 13:05 ` Eli Zaretskii
2024-12-24 12:54 ` Eli Zaretskii
2024-12-24 12:59 ` Gerd Möllmann
2024-12-23 23:37 ` Some experience with the igc branch Pip Cet via Emacs development discussions.
2024-12-24 4:03 ` Gerd Möllmann
2024-12-24 10:25 ` Pip Cet via Emacs development discussions. [this message]
2024-12-24 10:50 ` Gerd Möllmann
2024-12-24 13:15 ` Eli Zaretskii
2024-12-24 12:26 ` Eli Zaretskii
2024-12-24 12:56 ` Gerd Möllmann
2024-12-24 13:19 ` Pip Cet via Emacs development discussions.
2024-12-24 13:38 ` Gerd Möllmann
2024-12-24 13:46 ` Eli Zaretskii
2024-12-24 14:12 ` Gerd Möllmann
2024-12-24 14:40 ` Eli Zaretskii
2024-12-24 12:11 ` Eli Zaretskii
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