From: "Gerd Möllmann" <gerd.moellmann@gmail.com>
To: Pip Cet <pipcet@protonmail.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 11:50:14 +0100 [thread overview]
Message-ID: <m2ikr9uzh5.fsf@gmail.com> (raw)
In-Reply-To: <87bjx1bcp8.fsf@protonmail.com> (Pip Cet's message of "Tue, 24 Dec 2024 10:25:38 +0000")
Pip Cet <pipcet@protonmail.com> writes:
> 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.
Thanks for checking! Must be kind of a misunderstanding going on. And
anyway, it would be a feature we don't have with the old GC, so I'd
declare it out of scope :-).
>> 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.
Yes!
> My current patch makes it so the main thread never takes the arena lock,
> ever.
Hm, how and why does that work?
next prev parent reply other threads:[~2024-12-24 10:50 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.
2024-12-24 10:50 ` Gerd Möllmann [this message]
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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