From: Pip Cet <pipcet@protonmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: gerd.moellmann@gmail.com, eller.helmut@gmail.com, emacs-devel@gnu.org
Subject: Re: MPS: weak hash tables
Date: Tue, 02 Jul 2024 16:34:40 +0000 [thread overview]
Message-ID: <_ThR9pdYMaIpZASWVEUqh-TuMSUydDM4v4g6QeKGUJE3ilY4tfRXHPiXAGG4RupeAl8BIJ8FFr2BUiWT9xUvB8W4uuEXypIz6GrGXYLPG88=@protonmail.com> (raw)
In-Reply-To: <86plrvbydg.fsf@gnu.org>
On Tuesday, July 2nd, 2024 at 15:35, Eli Zaretskii <eliz@gnu.org> wrote:
> > Date: Tue, 02 Jul 2024 15:03:44 +0000
>
> > From: Pip Cet pipcet@protonmail.com
> > Cc: Gerd Möllmann gerd.moellmann@gmail.com, eller.helmut@gmail.com, emacs-devel@gnu.org
> >
> > That means we must do one of the following:
> >
> > 1. mangle all Lisp_Objects to pointers or fixnums when storing them in a weak hash table, and unmangle them upon retrieval
> > 2. not use 32-bit x86 machines
> > 3. modify MPS
> > 4. throw caution to the wind and just hope it works
> I don't understand why (1) is needed. Lisp objects are already
> pointers in disguise, so what exactly is the problem here?
They need to be aligned for MPS to understand they're pointers; they're unaligned, except for symbols which aren't pointers in the first place. In essence, MPS was focusing on the wrong language (for us).
> I also don't understand how come an optimization turned out to do us
> some harm.
Isn't that quite common, really?
That said, I really like Helmut's idea, though I'm trying to simplify it further to dumb it down to my level.
Is it okay if I install the changes for Ihor's bugs first, then fix IA32? I still need to do some work to make sure they build without any unnecessary overhead in the !HAVE_MPS case.
Pip
next prev parent reply other threads:[~2024-07-02 16:34 UTC|newest]
Thread overview: 196+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-01 20:47 MPS: weak hash tables Gerd Möllmann
2024-07-01 21:16 ` Pip Cet
2024-07-01 23:10 ` Pip Cet
2024-07-02 4:19 ` Gerd Möllmann
2024-07-02 5:47 ` Gerd Möllmann
2024-07-02 6:23 ` Pip Cet
2024-07-02 6:55 ` Gerd Möllmann
2024-07-02 9:15 ` Pip Cet
2024-07-02 9:37 ` Gerd Möllmann
2024-07-02 10:11 ` Gerd Möllmann
2024-07-02 11:36 ` Gerd Möllmann
2024-07-02 13:15 ` Eli Zaretskii
2024-07-02 13:16 ` Gerd Möllmann
2024-07-02 13:42 ` Eli Zaretskii
2024-07-02 15:03 ` Pip Cet
2024-07-02 15:17 ` Helmut Eller
2024-07-02 15:35 ` Eli Zaretskii
2024-07-02 16:34 ` Pip Cet [this message]
2024-07-02 18:20 ` Eli Zaretskii
2024-07-02 20:16 ` Pip Cet
2024-07-03 6:30 ` Gerd Möllmann
2024-07-03 11:23 ` Eli Zaretskii
2024-07-03 11:28 ` Gerd Möllmann
2024-07-02 13:02 ` Eli Zaretskii
2024-07-02 12:45 ` Eli Zaretskii
2024-07-02 11:23 ` Helmut Eller
2024-07-03 6:11 ` Gerd Möllmann
2024-07-03 6:33 ` Pip Cet
2024-07-03 7:04 ` Gerd Möllmann
2024-07-03 7:24 ` Helmut Eller
2024-07-03 7:25 ` Pip Cet
2024-07-03 7:38 ` Gerd Möllmann
2024-07-03 8:26 ` Gerd Möllmann
2024-07-03 9:31 ` Pip Cet
2024-07-03 10:22 ` Gerd Möllmann
2024-07-03 10:41 ` Pip Cet
2024-07-03 11:17 ` Gerd Möllmann
2024-07-03 20:20 ` Pip Cet
2024-07-04 7:17 ` Gerd Möllmann
2024-07-04 15:24 ` Pip Cet
2024-07-04 16:53 ` Gerd Möllmann
2024-07-04 20:05 ` Pip Cet
2024-07-05 3:50 ` Gerd Möllmann
2024-07-05 12:08 ` Pip Cet
2024-07-05 12:54 ` Gerd Möllmann
2024-07-05 13:27 ` Eli Zaretskii
2024-07-05 20:35 ` Pip Cet
2024-07-06 6:10 ` Eli Zaretskii
2024-07-06 6:31 ` Pip Cet
2024-07-06 7:00 ` Eli Zaretskii
2024-07-06 7:40 ` Gerd Möllmann
2024-07-06 9:13 ` Pip Cet
2024-07-06 10:59 ` Eli Zaretskii
2024-07-05 18:14 ` Helmut Eller
2024-07-05 19:25 ` Pip Cet
2024-07-06 3:39 ` Gerd Möllmann
2024-07-06 5:58 ` Pip Cet
2024-07-06 6:20 ` Gerd Möllmann
2024-07-06 6:29 ` Pip Cet
2024-07-06 6:51 ` Gerd Möllmann
2024-07-06 6:46 ` Eli Zaretskii
2024-07-06 9:23 ` Pip Cet
2024-07-06 11:03 ` Eli Zaretskii
2024-07-06 3:38 ` Gerd Möllmann
2024-07-06 9:47 ` Helmut Eller
2024-07-06 10:38 ` Gerd Möllmann
2024-07-06 11:13 ` Eli Zaretskii
2024-07-06 13:50 ` Helmut Eller
2024-07-06 13:59 ` Eli Zaretskii
2024-07-06 14:38 ` Gerd Möllmann
2024-07-06 16:20 ` Helmut Eller
2024-07-06 16:33 ` Eli Zaretskii
2024-07-06 16:48 ` Helmut Eller
2024-07-06 17:21 ` Eli Zaretskii
2024-07-06 17:59 ` Helmut Eller
2024-07-06 18:14 ` Gerd Möllmann
2024-07-06 18:56 ` Eli Zaretskii
2024-07-06 11:37 ` Pip Cet
2024-07-06 11:40 ` Gerd Möllmann
2024-07-06 11:57 ` Gerd Möllmann
2024-07-06 12:03 ` Eli Zaretskii
2024-07-06 12:16 ` Gerd Möllmann
2024-07-06 12:23 ` Pip Cet
2024-07-06 12:39 ` Gerd Möllmann
2024-07-06 12:30 ` Eli Zaretskii
2024-07-06 12:43 ` Gerd Möllmann
2024-07-06 13:53 ` Eli Zaretskii
2024-07-06 12:36 ` Gerd Möllmann
2024-07-06 14:00 ` Helmut Eller
2024-07-06 14:08 ` Gerd Möllmann
2024-07-06 14:24 ` Gerd Möllmann
2024-07-06 14:44 ` Helmut Eller
2024-07-06 14:52 ` Gerd Möllmann
2024-07-06 15:49 ` Pip Cet
2024-07-06 16:31 ` Gerd Möllmann
2024-07-06 16:56 ` Pip Cet
2024-07-06 17:28 ` Gerd Möllmann
2024-07-06 17:31 ` Gerd Möllmann
2024-07-06 18:30 ` Pip Cet
2024-07-06 20:00 ` Gerd Möllmann
2024-07-06 20:09 ` Ihor Radchenko
2024-07-07 3:55 ` Gerd Möllmann
2024-07-07 4:27 ` Gerd Möllmann
2024-07-07 4:30 ` Gerd Möllmann
2024-07-07 6:38 ` Pip Cet
2024-07-07 7:31 ` Gerd Möllmann
2024-07-07 7:44 ` Helmut Eller
2024-07-07 8:10 ` Gerd Möllmann
2024-07-07 8:24 ` Gerd Möllmann
2024-07-07 8:47 ` Pip Cet
2024-07-07 9:24 ` Gerd Möllmann
2024-07-07 9:26 ` Gerd Möllmann
2024-07-07 10:47 ` Eli Zaretskii
2024-07-07 11:19 ` Gerd Möllmann
2024-07-07 14:09 ` Eli Zaretskii
2024-07-07 14:15 ` Gerd Möllmann
2024-07-07 14:42 ` Eli Zaretskii
2024-07-07 14:52 ` Gerd Möllmann
2024-07-07 15:34 ` Eli Zaretskii
2024-07-07 15:36 ` Gerd Möllmann
2024-07-07 16:00 ` Eli Zaretskii
2024-07-07 17:08 ` Gerd Möllmann
2024-07-07 17:49 ` Eli Zaretskii
2024-07-07 18:15 ` Gerd Möllmann
2024-07-07 18:22 ` Eli Zaretskii
2024-07-07 18:29 ` Gerd Möllmann
2024-07-07 14:16 ` Gerd Möllmann
2024-07-07 14:18 ` Gerd Möllmann
2024-07-07 10:57 ` Pip Cet
2024-07-07 11:35 ` Gerd Möllmann
2024-07-07 11:48 ` Gerd Möllmann
2024-07-07 14:07 ` Gerd Möllmann
2024-07-07 14:21 ` Pip Cet
2024-07-07 14:27 ` Gerd Möllmann
2024-07-07 15:22 ` Helmut Eller
2024-07-07 15:40 ` Gerd Möllmann
2024-07-07 15:52 ` Helmut Eller
2024-07-07 15:56 ` Gerd Möllmann
2024-07-07 15:57 ` Pip Cet
2024-07-07 16:26 ` Helmut Eller
2024-07-07 17:03 ` Gerd Möllmann
2024-07-07 18:40 ` Gerd Möllmann
2024-07-07 18:53 ` Helmut Eller
2024-07-07 19:00 ` Gerd Möllmann
2024-07-07 19:31 ` Pip Cet
2024-07-07 19:36 ` Gerd Möllmann
2024-07-08 9:11 ` MPS: commit limit Gerd Möllmann
2024-07-10 6:46 ` Helmut Eller
2024-07-10 7:08 ` Gerd Möllmann
2024-07-16 15:16 ` Helmut Eller
2024-07-16 15:27 ` Eli Zaretskii
2024-07-16 15:43 ` Helmut Eller
2024-07-16 15:54 ` Eli Zaretskii
2024-07-16 16:29 ` Helmut Eller
2024-07-16 16:39 ` Gerd Möllmann
2024-07-16 16:43 ` Pip Cet
2024-07-16 16:56 ` Gerd Möllmann
2024-07-16 15:32 ` Eli Zaretskii
2024-07-16 16:27 ` Helmut Eller
2024-07-16 18:49 ` Pip Cet
2024-07-17 6:15 ` Helmut Eller
2024-07-16 16:32 ` Pip Cet
2024-07-16 16:48 ` Helmut Eller
2024-07-08 5:11 ` MPS: weak hash tables Pip Cet
2024-07-08 5:17 ` Gerd Möllmann
2024-07-08 5:37 ` Pip Cet
2024-07-08 5:43 ` Gerd Möllmann
2024-07-07 8:49 ` Gerd Möllmann
2024-07-08 9:16 ` Andrea Corallo
2024-07-08 9:24 ` Gerd Möllmann
2024-07-08 9:54 ` Andrea Corallo
2024-07-08 10:10 ` Gerd Möllmann
2024-07-08 11:57 ` MPS: out-of-memory Eli Zaretskii
2024-07-08 13:46 ` Gerd Möllmann
2024-07-08 16:45 ` Pip Cet
2024-07-08 18:26 ` Gerd Möllmann
2024-07-08 19:44 ` Pip Cet
2024-07-09 3:58 ` Gerd Möllmann
2024-07-08 18:27 ` Helmut Eller
2024-07-08 18:31 ` Gerd Möllmann
2024-07-08 19:14 ` Eli Zaretskii
2024-07-08 19:35 ` Gerd Möllmann
2024-07-08 19:08 ` Eli Zaretskii
2024-07-08 19:31 ` Pip Cet
2024-07-04 15:22 ` MPS: weak hash tables Helmut Eller
2024-07-04 15:33 ` Pip Cet
2024-07-04 16:46 ` Gerd Möllmann
2024-07-04 16:43 ` Gerd Möllmann
2024-07-02 13:50 ` Mattias Engdegård
2024-07-02 6:57 ` Gerd Möllmann
2024-07-02 7:15 ` Gerd Möllmann
2024-07-02 8:46 ` Ihor Radchenko
2024-07-02 8:59 ` Gerd Möllmann
2024-07-02 9:33 ` Ihor Radchenko
2024-07-02 9:35 ` Pip Cet
2024-07-02 11:03 ` Ihor Radchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='_ThR9pdYMaIpZASWVEUqh-TuMSUydDM4v4g6QeKGUJE3ilY4tfRXHPiXAGG4RupeAl8BIJ8FFr2BUiWT9xUvB8W4uuEXypIz6GrGXYLPG88=@protonmail.com' \
--to=pipcet@protonmail.com \
--cc=eliz@gnu.org \
--cc=eller.helmut@gmail.com \
--cc=emacs-devel@gnu.org \
--cc=gerd.moellmann@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.