From: Po Lu <luangruo@yahoo.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Emanuel Berg <incal@dataswamp.org>, emacs-devel@gnu.org
Subject: Re: Emacs design and architecture. How about copy-on-write?
Date: Tue, 19 Sep 2023 20:57:30 +0800 [thread overview]
Message-ID: <87msxiuxqd.fsf@yahoo.com> (raw)
In-Reply-To: <83sf7acp86.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 19 Sep 2023 15:38:33 +0300")
Eli Zaretskii <eliz@gnu.org> writes:
> If we need to lock 99.99% of Emacs "single" variables, it is easier to
> lock everything. Faster, too.
Interlocking variables is not necessary. Extant buses guarantee that
word-sized (Lisp_Object) writes and reads from one CPU are always
coherently propagated to other processors. And otherwise, interlocking
every global variables would incur an extreme performance penalty; two
extra load-locked / store-conditional pairs (or interlocked
instructions) for each read or write at the minimum.
Interlocking Lisp_Objects themselves is only mandatory under wide int
builds, where the size of each object is larger than the machine's word
size. Supporting such builds in a multiprocessing Emacs will be an
extreme burden that I don't think we should shoulder.
next prev parent reply other threads:[~2023-09-19 12:57 UTC|newest]
Thread overview: 381+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-27 15:14 Shrinking the C core Arthur Miller
2023-08-27 16:29 ` Eli Zaretskii
2023-08-28 5:32 ` Gerd Möllmann
2023-08-28 6:23 ` Arthur Miller
2023-08-28 6:21 ` Arthur Miller
2023-08-28 1:31 ` Richard Stallman
2023-08-28 5:50 ` Arthur Miller
2023-08-28 12:20 ` Po Lu
2023-08-28 14:39 ` Arthur Miller
2023-08-28 15:17 ` Po Lu
2023-08-29 2:41 ` Arthur Miller
2023-08-28 1:41 ` Po Lu
2023-08-28 2:53 ` chad
2023-08-28 3:43 ` Emanuel Berg
2023-08-28 4:53 ` Arthur Miller
2023-08-28 5:36 ` Po Lu
2023-08-28 6:55 ` Arthur Miller
2023-08-28 7:31 ` Po Lu
2023-08-28 8:06 ` Ihor Radchenko
2023-08-28 14:30 ` Arthur Miller
2023-08-28 15:09 ` Ihor Radchenko
2023-08-29 2:20 ` Arthur Miller
2023-08-28 15:14 ` Po Lu
2023-08-29 2:36 ` Arthur Miller
2023-08-29 4:07 ` Po Lu
2023-08-31 1:07 ` Emanuel Berg
2023-08-28 14:08 ` Arthur Miller
2023-08-28 15:08 ` Po Lu
2023-08-29 2:06 ` Arthur Miller
2023-08-29 4:15 ` Po Lu
2023-08-29 11:50 ` Eli Zaretskii
2023-08-29 3:57 ` Arthur Miller
2023-09-01 1:18 ` Richard Stallman
2023-08-31 2:07 ` Richard Stallman
2023-09-01 14:58 ` Arthur Miller
2023-09-01 16:36 ` tomas
2023-09-04 1:32 ` Richard Stallman
2023-09-04 1:44 ` Emanuel Berg
2023-09-04 5:49 ` Rudolf Schlatte
2023-09-04 14:08 ` Emanuel Berg
2023-09-07 1:21 ` Richard Stallman
2023-09-07 1:54 ` Emanuel Berg
2023-09-07 7:02 ` tomas
2023-09-07 7:36 ` Alfred M. Szmidt
2023-09-07 7:56 ` Emanuel Berg
2023-09-07 8:19 ` Ihor Radchenko
2023-09-07 8:39 ` Emanuel Berg
2023-09-07 9:28 ` Alfred M. Szmidt
2023-09-09 1:00 ` Emanuel Berg
2023-09-09 6:25 ` Po Lu
2023-09-09 7:24 ` Eli Zaretskii
2023-09-07 9:31 ` Eli Zaretskii
2023-09-07 9:39 ` Ihor Radchenko
2023-09-09 1:06 ` Emanuel Berg
2023-09-11 0:43 ` Richard Stallman
2023-09-11 12:24 ` Eli Zaretskii
2023-09-11 12:43 ` tomas
2023-09-13 5:59 ` Emanuel Berg
2023-09-12 4:44 ` Gerd Möllmann
2023-09-12 12:25 ` João Távora
2023-09-12 11:31 ` Lynn Winebarger
2023-09-12 13:00 ` Emacs design and architecture (was: Shrinking the C core) Eli Zaretskii
2023-09-13 20:52 ` Lynn Winebarger
2023-09-13 21:19 ` Christopher Dimech
2023-09-14 6:01 ` Eli Zaretskii
2023-09-15 0:13 ` Richard Stallman
2023-09-15 4:39 ` Emacs design and architecture Werner LEMBERG
2023-09-17 0:43 ` Richard Stallman
2023-09-17 13:22 ` Werner LEMBERG
2023-09-14 5:57 ` Emacs design and architecture (was: Shrinking the C core) Eli Zaretskii
2023-09-14 6:30 ` Emacs design and architecture Gerd Möllmann
2023-09-14 6:38 ` Po Lu
2023-09-14 6:49 ` Gerd Möllmann
2023-09-14 15:03 ` Helmut Eller
2023-09-14 15:30 ` Gerd Möllmann
2023-09-14 16:21 ` Helmut Eller
2023-09-17 0:46 ` Richard Stallman
2023-09-17 13:02 ` Björn Bidar
2023-09-19 10:19 ` Richard Stallman
2023-09-14 16:23 ` Philip Kaludercic
2023-09-14 16:50 ` joakim
2023-09-14 16:30 ` Emacs design and architecture (was: Shrinking the C core) Lynn Winebarger
2023-09-14 16:52 ` Eli Zaretskii
2023-09-14 21:35 ` Dmitry Gutov
2023-09-15 5:50 ` Eli Zaretskii
2023-09-15 6:51 ` Yuri Khan
2023-09-15 7:23 ` Emacs design and architecture Max Brieiev
2023-09-15 7:30 ` Emacs design and architecture (was: Shrinking the C core) Eli Zaretskii
2023-09-15 9:32 ` Emacs design and architecture Gerd Möllmann
2023-09-15 15:52 ` Dmitry Gutov
2023-09-15 18:36 ` Gerd Möllmann
2023-09-15 18:42 ` Eli Zaretskii
2023-09-15 19:19 ` Gerd Möllmann
2023-09-15 22:20 ` Dmitry Gutov
2023-09-15 23:58 ` Emanuel Berg
2023-09-16 6:00 ` Eli Zaretskii
2023-09-17 12:16 ` Emanuel Berg
2023-09-17 14:24 ` Eli Zaretskii
2023-09-17 15:36 ` Emacs design and architecture. How about copy-on-write? Alan Mackenzie
2023-09-18 10:30 ` Eli Zaretskii
2023-09-18 11:38 ` Alan Mackenzie
2023-09-18 12:08 ` Eli Zaretskii
2023-09-18 12:49 ` Ihor Radchenko
2023-09-18 14:27 ` Eli Zaretskii
2023-09-18 15:55 ` Ihor Radchenko
2023-09-18 17:47 ` Eli Zaretskii
2023-09-18 22:48 ` Emanuel Berg
2023-09-19 10:53 ` Eli Zaretskii
2023-09-19 11:14 ` Emanuel Berg
2023-09-19 12:37 ` Ihor Radchenko
2023-09-19 19:21 ` Emanuel Berg
2023-09-20 9:56 ` Ihor Radchenko
2023-09-22 15:50 ` Emanuel Berg
2023-09-22 16:15 ` Ihor Radchenko
2023-09-22 16:22 ` Emanuel Berg
2023-09-22 18:08 ` Eli Zaretskii
2023-09-19 19:34 ` Emanuel Berg
2023-09-20 9:59 ` Ihor Radchenko
2023-09-20 10:22 ` Po Lu
2023-09-20 10:56 ` Ihor Radchenko
2023-09-20 11:11 ` Po Lu
2023-09-20 11:53 ` Ihor Radchenko
2023-09-20 11:58 ` Po Lu
2023-09-20 12:05 ` Ihor Radchenko
2023-09-20 13:35 ` Po Lu
2023-09-20 15:53 ` Eli Zaretskii
2023-09-21 0:55 ` Po Lu
2023-09-21 3:35 ` Po Lu
2023-09-21 7:27 ` Eli Zaretskii
2023-09-21 7:34 ` Po Lu
2023-09-21 8:13 ` Eli Zaretskii
2023-09-21 8:35 ` Ihor Radchenko
2023-09-21 9:59 ` Eli Zaretskii
2023-09-21 10:13 ` Ihor Radchenko
2023-09-21 11:49 ` Po Lu
2023-09-21 23:43 ` Dmitry Gutov
2023-09-21 12:57 ` Eli Zaretskii
2023-09-21 13:12 ` Po Lu
2023-09-21 13:29 ` Eli Zaretskii
2023-09-21 13:35 ` Po Lu
2023-09-21 13:49 ` Eli Zaretskii
2023-09-21 13:57 ` Po Lu
2023-09-21 14:10 ` Eli Zaretskii
2023-09-21 9:14 ` Po Lu
2023-09-22 15:59 ` Emanuel Berg
2023-09-22 16:45 ` [External] : " Drew Adams
2023-09-25 13:31 ` Emanuel Berg
2023-09-19 12:38 ` Eli Zaretskii
2023-09-19 12:57 ` Po Lu [this message]
2023-09-19 14:36 ` Eli Zaretskii
2023-09-20 1:05 ` Po Lu
2023-09-20 12:02 ` Eli Zaretskii
2023-09-20 12:09 ` Ihor Radchenko
2023-09-20 12:27 ` Po Lu
2023-09-19 19:38 ` Emanuel Berg
2023-09-20 12:35 ` Eli Zaretskii
2023-09-22 14:22 ` Emanuel Berg
2023-09-22 15:51 ` Eli Zaretskii
2023-09-22 16:00 ` Emanuel Berg
2023-09-22 19:00 ` Eli Zaretskii
2023-09-22 21:14 ` Emanuel Berg
2023-09-22 16:11 ` Ihor Radchenko
2023-09-22 16:14 ` Eli Zaretskii
2023-09-22 16:27 ` Ihor Radchenko
2023-09-22 17:19 ` Emanuel Berg
2023-09-22 16:13 ` tomas
2023-09-19 11:36 ` Ihor Radchenko
2023-09-19 12:34 ` Eli Zaretskii
2023-09-19 13:35 ` Ihor Radchenko
2023-09-19 14:14 ` Eli Zaretskii
2023-09-19 15:15 ` Dmitry Gutov
2023-09-19 15:37 ` Eli Zaretskii
2023-09-19 16:01 ` Dmitry Gutov
2023-09-19 17:54 ` Eli Zaretskii
2023-09-19 20:21 ` Dmitry Gutov
2023-09-20 11:28 ` Eli Zaretskii
2023-09-20 11:38 ` Ihor Radchenko
2023-09-20 14:35 ` Eli Zaretskii
2023-09-21 10:41 ` Ihor Radchenko
2023-09-21 13:26 ` Eli Zaretskii
2023-09-22 10:05 ` Ihor Radchenko
2023-09-22 11:53 ` Eli Zaretskii
2023-09-22 12:49 ` Ihor Radchenko
2023-09-22 13:01 ` Eli Zaretskii
2023-09-22 13:08 ` Ihor Radchenko
2023-09-20 12:21 ` Po Lu
2023-09-20 14:51 ` Eli Zaretskii
2023-09-20 19:39 ` Dmitry Gutov
2023-09-21 4:31 ` Eli Zaretskii
2023-09-21 10:41 ` Dmitry Gutov
2023-09-21 22:21 ` Stefan Kangas
2023-09-21 23:01 ` Dmitry Gutov
2023-09-21 0:41 ` Po Lu
2023-09-21 2:23 ` Adam Porter
2023-09-21 2:53 ` Po Lu
2023-09-21 7:25 ` Eli Zaretskii
2023-09-21 7:48 ` Po Lu
2023-09-21 8:18 ` Eli Zaretskii
2023-09-21 9:25 ` Po Lu
2023-09-21 9:39 ` Ihor Radchenko
2023-09-21 10:36 ` Dmitry Gutov
2023-09-21 10:48 ` Ihor Radchenko
2023-09-21 11:10 ` Dmitry Gutov
2023-09-21 11:17 ` Ihor Radchenko
2023-09-21 11:27 ` Dmitry Gutov
2023-09-21 11:36 ` Debouncing slow mode line constructs (was: Emacs design and architecture. How about copy-on-write?) Ihor Radchenko
2023-09-21 11:56 ` Dmitry Gutov
2023-09-22 10:07 ` Ihor Radchenko
2023-09-22 11:55 ` Eli Zaretskii
2023-09-22 12:50 ` Ihor Radchenko
2023-09-22 13:04 ` Eli Zaretskii
2023-09-22 13:10 ` Ihor Radchenko
2023-09-22 13:14 ` Eli Zaretskii
2023-09-23 10:54 ` Ihor Radchenko
2023-09-21 13:48 ` Eli Zaretskii
2023-09-22 10:23 ` Ihor Radchenko
2023-09-22 12:08 ` Eli Zaretskii
2023-09-22 13:03 ` Ihor Radchenko
2023-09-22 13:06 ` Eli Zaretskii
2023-09-22 13:19 ` Ihor Radchenko
2023-09-22 14:41 ` Eli Zaretskii
2023-09-23 11:10 ` Ihor Radchenko
2023-09-22 12:52 ` Dmitry Gutov
2023-09-22 15:05 ` [External] : " Drew Adams
2023-09-21 13:00 ` Emacs design and architecture. How about copy-on-write? Eli Zaretskii
2023-09-21 13:30 ` Dmitry Gutov
2023-09-21 13:44 ` Eli Zaretskii
2023-09-22 1:29 ` Dmitry Gutov
2023-09-22 10:51 ` Ihor Radchenko
2023-09-22 10:28 ` Ihor Radchenko
2023-09-22 12:26 ` Eli Zaretskii
2023-09-22 13:06 ` Ihor Radchenko
2023-09-22 13:12 ` Eli Zaretskii
2023-09-21 10:03 ` Eli Zaretskii
2023-09-20 19:22 ` Dmitry Gutov
2023-09-21 4:29 ` Eli Zaretskii
2023-09-21 20:24 ` Richard Stallman
2023-09-20 9:47 ` Ihor Radchenko
2023-09-20 14:02 ` Eli Zaretskii
2023-09-21 10:29 ` Ihor Radchenko
2023-09-21 14:02 ` Eli Zaretskii
2023-09-22 10:48 ` Ihor Radchenko
2023-09-22 12:34 ` Eli Zaretskii
2023-09-23 11:07 ` Ihor Radchenko
2023-09-23 11:23 ` Eli Zaretskii
2023-09-23 12:53 ` Dmitry Gutov
2023-09-23 13:01 ` Eli Zaretskii
2023-09-23 13:08 ` Dmitry Gutov
2023-09-23 13:15 ` Eli Zaretskii
2023-09-23 14:09 ` Ihor Radchenko
2023-09-24 0:29 ` Dmitry Gutov
2023-09-23 14:23 ` Yuri Khan
2023-09-23 14:25 ` Dmitry Gutov
2023-09-18 13:30 ` Po Lu
2023-09-18 13:34 ` Po Lu
2023-09-18 13:55 ` Ihor Radchenko
2023-09-18 15:04 ` Eli Zaretskii
2023-09-18 23:41 ` Po Lu
2023-09-19 14:25 ` Eli Zaretskii
2023-09-20 1:01 ` Po Lu
2023-09-20 11:56 ` Eli Zaretskii
2023-09-20 12:13 ` Po Lu
2023-09-20 14:46 ` Eli Zaretskii
2023-09-20 18:50 ` Dmitry Gutov
2023-09-21 4:23 ` Eli Zaretskii
2023-09-21 10:08 ` Ihor Radchenko
2023-09-21 10:12 ` Eli Zaretskii
2023-09-21 10:35 ` Ihor Radchenko
2023-09-21 13:13 ` Eli Zaretskii
2023-09-19 21:37 ` Björn Bidar
2023-09-19 10:20 ` Richard Stallman
2023-09-18 21:38 ` Emacs design and architecture Emanuel Berg
2023-09-16 8:41 ` Gerd Möllmann
2023-09-16 11:02 ` Dmitry Gutov
2023-09-16 11:59 ` Sebastian Miele
2023-09-16 13:00 ` Po Lu
2023-09-16 13:08 ` Gerd Möllmann
2023-09-16 13:25 ` Po Lu
2023-09-16 14:20 ` Björn Bidar
2023-09-16 16:33 ` Dmitry Gutov
2023-09-16 17:07 ` Gerd Möllmann
2023-09-16 17:30 ` Dmitry Gutov
2023-09-16 18:33 ` Gerd Möllmann
2023-09-16 19:18 ` Lynn Winebarger
2023-09-16 20:02 ` Gerd Möllmann
2023-09-16 19:40 ` Dmitry Gutov
2023-09-16 20:01 ` Gerd Möllmann
2023-09-16 23:50 ` Po Lu
2023-09-16 16:24 ` Dmitry Gutov
2023-09-16 23:46 ` Po Lu
2023-09-17 6:08 ` Immanuel Litzroth
2023-09-17 6:43 ` Po Lu
2023-09-17 18:51 ` Dmitry Gutov
2023-09-18 0:11 ` Po Lu
2023-09-18 10:46 ` Dmitry Gutov
2023-09-18 11:12 ` Po Lu
2023-09-18 11:19 ` Dmitry Gutov
2023-09-20 18:35 ` Richard Stallman
2023-09-20 18:59 ` Eli Zaretskii
2023-09-17 23:02 ` Richard Stallman
2023-09-19 18:22 ` chad
2023-09-21 20:26 ` Richard Stallman
2023-09-22 0:31 ` Bob Rogers
2023-09-23 7:13 ` Richard Stallman
2023-09-18 18:48 ` Dmitry Gutov
2023-09-19 23:14 ` Richard Stallman
2023-09-17 23:03 ` Richard Stallman
2023-09-15 23:26 ` Emanuel Berg
2023-09-16 9:09 ` Gerd Möllmann
2023-09-17 7:34 ` Gerd Möllmann
2023-09-17 15:44 ` Helmut Eller
2023-09-17 16:23 ` Eli Zaretskii
2023-09-18 6:36 ` Gerd Möllmann
2023-09-15 15:10 ` Emacs design and architecture (was: Shrinking the C core) Dmitry Gutov
2023-09-15 15:13 ` Dmitry Gutov
2023-09-17 0:45 ` Richard Stallman
2023-09-17 6:31 ` Eli Zaretskii
2023-09-19 10:22 ` Richard Stallman
2023-09-19 14:31 ` Eli Zaretskii
2023-10-12 12:27 ` Richard Stallman
2023-09-13 6:12 ` Shrinking the C core Emanuel Berg
2023-09-05 4:23 ` Arthur Miller
2023-09-06 0:58 ` Richard Stallman
2023-09-06 1:12 ` Emanuel Berg
2023-09-06 5:04 ` Arthur Miller
2023-09-06 11:29 ` Alan Mackenzie
2023-09-06 23:03 ` Emanuel Berg
2023-09-07 7:00 ` tomas
2023-09-07 7:23 ` Emanuel Berg
2023-09-07 7:52 ` tomas
2023-09-07 5:30 ` Po Lu
2023-09-07 6:15 ` Emanuel Berg
2023-09-11 0:43 ` Richard Stallman
2023-09-11 12:05 ` Eli Zaretskii
2023-09-12 23:55 ` Richard Stallman
2023-09-13 6:34 ` Emanuel Berg
2023-09-07 8:51 ` Manuel Giraud via Emacs development discussions.
2023-09-07 9:20 ` Po Lu
2023-09-07 9:34 ` Eli Zaretskii
2023-09-08 2:00 ` Arthur Miller
2023-09-08 7:35 ` Gerd Möllmann
2023-09-09 10:05 ` João Távora
2023-09-08 15:38 ` [External] : " Drew Adams
2023-09-09 11:55 ` Arthur Miller
2023-09-09 12:55 ` Eli Zaretskii
2023-09-09 13:20 ` Arthur Miller
2023-09-10 0:09 ` Drew Adams
2023-09-11 0:40 ` Richard Stallman
2023-09-11 15:10 ` João Távora
2023-09-11 16:12 ` Drew Adams
2023-09-11 20:37 ` Tomas Hlavaty
2023-09-11 21:10 ` João Távora
2023-09-12 19:52 ` Tomas Hlavaty
2023-09-12 20:52 ` João Távora
2023-09-15 8:43 ` Emanuel Berg
2023-09-15 15:35 ` Drew Adams
2023-09-11 21:09 ` Eric S. Raymond
2023-09-12 2:05 ` Arthur Miller
2023-09-12 4:38 ` Gerd Möllmann
2023-09-12 5:48 ` Arthur Miller
2023-09-12 12:07 ` Eli Zaretskii
2023-09-12 12:16 ` Po Lu
2023-09-12 19:58 ` Arthur Miller
2023-09-13 14:39 ` Eli Zaretskii
2023-09-14 11:53 ` Arthur Miller
2023-09-14 13:36 ` Po Lu
2023-09-12 2:30 ` Arthur Miller
2023-09-12 12:15 ` Emanuel Berg
2023-09-12 12:32 ` Emanuel Berg
2023-09-12 19:57 ` Tomas Hlavaty
2023-09-13 0:00 ` Richard Stallman
2023-09-08 17:58 ` Bob Rogers
2023-09-15 21:59 ` Emanuel Berg
2023-09-17 23:03 ` Richard Stallman
2023-09-09 0:39 ` Richard Stallman
2023-09-09 12:50 ` Arthur Miller
2023-09-12 0:27 ` Richard Stallman
2023-08-28 7:45 ` Andrea Monaco
2023-08-28 14:35 ` Arthur Miller
-- strict thread matches above, loose matches on Subject: below --
2023-09-20 20:51 Emacs design and architecture. How about copy-on-write? zhanghj
2023-09-21 9:43 Payas Relekar
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