unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
From: Ihor Radchenko <yantar92@posteo.net>
To: Eli Zaretskii <eliz@gnu.org>
Cc: luangruo@yahoo.com, emacs-devel@gnu.org
Subject: Re: Concurrency via isolated process/thread
Date: Thu, 06 Jul 2023 14:47:13 +0000	[thread overview]
Message-ID: <87zg49xfke.fsf@localhost> (raw)
In-Reply-To: <83y1jtgmbw.fsf@gnu.org>

Eli Zaretskii <eliz@gnu.org> writes:

>> My understanding is
>> 
>>   CHECK_STRING (XCAR (foo));
>>   <we do not want XCAR (foo) to be altered here>
>>   foo = XSTRING (XCAR (foo));
>> 
>> So, locking is needed to ensure that CHECK_STRING assertion remains valid.
>> 
>> Or did you refer to something else?
>
> I don't know what Po Lu had in mind, but one aspect of this is that a
> string object might keep its memory address, but its data could be
> relocated.  This can happen as part of GC, and is the reason why
> string data is kept separate from the string itself.

This does not change my understanding.
Locking should prevent manipulations with object data over the time span
the code expects the object to be unchanged.

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>



  reply	other threads:[~2023-07-06 14:47 UTC|newest]

Thread overview: 192+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-04 16:58 Concurrency via isolated process/thread Ihor Radchenko
2023-07-04 17:12 ` Eli Zaretskii
2023-07-04 17:29   ` Ihor Radchenko
2023-07-04 17:35     ` Eli Zaretskii
2023-07-04 17:52       ` Ihor Radchenko
2023-07-04 18:24         ` Eli Zaretskii
2023-07-05 11:23           ` Ihor Radchenko
2023-07-05 11:49             ` Eli Zaretskii
2023-07-05 12:40               ` Ihor Radchenko
2023-07-05 13:02                 ` Lynn Winebarger
2023-07-05 13:10                   ` Ihor Radchenko
2023-07-06 18:35                     ` Lynn Winebarger
2023-07-07 11:48                       ` Ihor Radchenko
2023-07-05 13:33                 ` Eli Zaretskii
2023-07-05 13:35                   ` Ihor Radchenko
2023-07-05  0:34         ` Po Lu
2023-07-05 11:26           ` Ihor Radchenko
2023-07-05 12:11             ` Po Lu
2023-07-05 12:44               ` Ihor Radchenko
2023-07-05 13:21                 ` Po Lu
2023-07-05 13:26                   ` Ihor Radchenko
2023-07-05 13:51                     ` Eli Zaretskii
2023-07-05 14:00                       ` Ihor Radchenko
2023-07-06  0:32                         ` Po Lu
2023-07-06 10:46                           ` Ihor Radchenko
2023-07-06 12:24                             ` Po Lu
2023-07-06 12:31                               ` Ihor Radchenko
2023-07-06 12:41                                 ` Po Lu
2023-07-06 12:51                                   ` Ihor Radchenko
2023-07-06 12:58                                     ` Po Lu
2023-07-06 13:13                                       ` Ihor Radchenko
2023-07-06 14:13                                         ` Eli Zaretskii
2023-07-06 14:47                                           ` Ihor Radchenko [this message]
2023-07-06 15:10                                             ` Eli Zaretskii
2023-07-06 16:17                                               ` Ihor Radchenko
2023-07-06 18:19                                                 ` Eli Zaretskii
2023-07-07 12:04                                                   ` Ihor Radchenko
2023-07-07 13:16                                                     ` Eli Zaretskii
2023-07-07 14:29                                                       ` Ihor Radchenko
2023-07-07 14:47                                                         ` Eli Zaretskii
2023-07-07 15:21                                                           ` Ihor Radchenko
2023-07-07 18:04                                                             ` Eli Zaretskii
2023-07-07 18:24                                                               ` Ihor Radchenko
2023-07-07 19:36                                                                 ` Eli Zaretskii
2023-07-07 20:05                                                                   ` Ihor Radchenko
2023-07-08  7:05                                                                     ` Eli Zaretskii
2023-07-08 10:53                                                                       ` Ihor Radchenko
2023-07-08 14:26                                                                         ` Eli Zaretskii
2023-07-09  9:36                                                                           ` Ihor Radchenko
2023-07-09  9:56                                                                             ` Po Lu
2023-07-09 10:04                                                                               ` Ihor Radchenko
2023-07-09 11:59                                                                             ` Eli Zaretskii
2023-07-09 13:58                                                                               ` Ihor Radchenko
2023-07-09 14:52                                                                                 ` Eli Zaretskii
2023-07-09 15:49                                                                                   ` Ihor Radchenko
2023-07-09 16:35                                                                                     ` Eli Zaretskii
2023-07-10 11:30                                                                                       ` Ihor Radchenko
2023-07-10 12:13                                                                                         ` Po Lu
2023-07-10 12:28                                                                                           ` Ihor Radchenko
2023-07-10 12:48                                                                                             ` Po Lu
2023-07-10 12:53                                                                                               ` Ihor Radchenko
2023-07-10 13:18                                                                                                 ` Po Lu
2023-07-10 13:09                                                                                         ` Eli Zaretskii
2023-07-10 13:58                                                                                           ` Ihor Radchenko
2023-07-10 14:37                                                                                             ` Eli Zaretskii
2023-07-10 14:55                                                                                               ` Ihor Radchenko
2023-07-10 16:03                                                                                                 ` Eli Zaretskii
2023-07-16 14:58                                                                                 ` Ihor Radchenko
2023-07-17  7:55                                                                                   ` Ihor Radchenko
2023-07-17  8:36                                                                                     ` Po Lu
2023-07-17  8:52                                                                                       ` Ihor Radchenko
2023-07-17  9:39                                                                                         ` Po Lu
2023-07-17  9:54                                                                                           ` Ihor Radchenko
2023-07-17 10:08                                                                                             ` Po Lu
2023-07-24  8:42                                                                                 ` Ihor Radchenko
2023-07-24  9:52                                                                                   ` Po Lu
2023-07-24 10:09                                                                                     ` Ihor Radchenko
2023-07-24 12:15                                                                                       ` Po Lu
2023-07-24 12:25                                                                                         ` Ihor Radchenko
2023-07-24 13:31                                                                                           ` Po Lu
2023-07-24 13:53                                                                                             ` Ihor Radchenko
2023-07-25  0:12                                                                                               ` Po Lu
2023-07-25  4:28                                                                                                 ` Ihor Radchenko
2023-07-24 12:50                                                                                       ` Eli Zaretskii
2023-07-24 13:15                                                                                         ` Ihor Radchenko
2023-07-24 13:41                                                                                           ` Eli Zaretskii
2023-07-24 14:13                                                                                             ` Ihor Radchenko
2023-07-24 12:44                                                                                   ` Eli Zaretskii
2023-07-24 13:02                                                                                     ` Ihor Radchenko
2023-07-24 13:54                                                                                       ` Eli Zaretskii
2023-07-24 14:24                                                                                         ` Ihor Radchenko
2023-07-24 16:00                                                                                           ` Eli Zaretskii
2023-07-24 16:38                                                                                             ` Ihor Radchenko
2023-07-25  0:20                                                                                               ` Po Lu
2023-07-25  4:36                                                                                                 ` Ihor Radchenko
2023-07-25  7:27                                                                                                   ` Po Lu
2023-07-25  7:59                                                                                                     ` Ihor Radchenko
2023-07-25  8:27                                                                                                       ` Po Lu
2023-07-25  8:45                                                                                                         ` Ihor Radchenko
2023-07-25  8:53                                                                                                           ` Po Lu
2023-07-25  9:03                                                                                                             ` Ihor Radchenko
2023-07-25  9:17                                                                                                               ` Po Lu
2023-07-25  9:27                                                                                                                 ` Ihor Radchenko
2023-07-25  9:37                                                                                                                   ` Po Lu
2023-07-25 12:40                                                                                                                   ` Eli Zaretskii
2023-07-25 11:29                                                                                               ` Eli Zaretskii
2023-07-25 11:52                                                                                                 ` Ihor Radchenko
2023-07-25 14:27                                                                                                   ` Eli Zaretskii
2023-07-09 17:13                                                                             ` Gregory Heytings
2023-07-10 11:37                                                                               ` Ihor Radchenko
2023-07-13 13:54                                                                                 ` Gregory Heytings
2023-07-13 14:23                                                                                   ` Ihor Radchenko
2023-07-07  0:21                                         ` Po Lu
2023-07-06 14:08                             ` Eli Zaretskii
2023-07-06 15:01                               ` Ihor Radchenko
2023-07-06 15:16                                 ` Eli Zaretskii
2023-07-06 16:32                                   ` Ihor Radchenko
2023-07-06 17:50                                     ` Eli Zaretskii
2023-07-07 12:30                                       ` Ihor Radchenko
2023-07-07 13:34                                         ` Eli Zaretskii
2023-07-07 15:17                                           ` Ihor Radchenko
2023-07-07 19:31                                             ` Eli Zaretskii
2023-07-07 20:01                                               ` Ihor Radchenko
2023-07-08  6:50                                                 ` Eli Zaretskii
2023-07-08 11:55                                                   ` Ihor Radchenko
2023-07-08 14:43                                                     ` Eli Zaretskii
2023-07-09  9:57                                                       ` Ihor Radchenko
2023-07-09 12:08                                                         ` Eli Zaretskii
2023-07-09 14:16                                                           ` Ihor Radchenko
2023-07-09 15:00                                                             ` Eli Zaretskii
2023-07-09 12:22                                                         ` Po Lu
2023-07-09 13:12                                                           ` Eli Zaretskii
2023-07-10  0:18                                                             ` Po Lu
2023-07-08  0:51                                               ` Po Lu
2023-07-08  4:18                                                 ` tomas
2023-07-08  5:51                                                   ` Po Lu
2023-07-08  6:01                                                     ` tomas
2023-07-08 10:02                                                       ` Ihor Radchenko
2023-07-08 19:39                                                         ` tomas
2023-07-08  6:25                                                 ` Eli Zaretskii
2023-07-08  6:38                                                   ` Ihor Radchenko
2023-07-08  7:45                                                     ` Eli Zaretskii
2023-07-08  8:16                                                       ` Ihor Radchenko
2023-07-08 10:13                                                         ` Eli Zaretskii
2023-07-07 13:35                                         ` Po Lu
2023-07-07 15:31                                           ` Ihor Radchenko
2023-07-08  0:44                                             ` Po Lu
2023-07-08  4:29                                               ` tomas
2023-07-08  7:21                                               ` Eli Zaretskii
2023-07-08  7:48                                                 ` Po Lu
2023-07-08 10:02                                                   ` Eli Zaretskii
2023-07-08 11:54                                                     ` Po Lu
2023-07-08 14:12                                                       ` Eli Zaretskii
2023-07-09  0:37                                                         ` Po Lu
2023-07-09  7:01                                                           ` Eli Zaretskii
2023-07-09  7:14                                                             ` Po Lu
2023-07-09  7:35                                                               ` Eli Zaretskii
2023-07-09  7:57                                                                 ` Ihor Radchenko
2023-07-09  8:41                                                                   ` Eli Zaretskii
2023-07-10 14:53                                                                     ` Dmitry Gutov
2023-07-09  9:25                                                                 ` Po Lu
2023-07-09 11:14                                                                   ` Eli Zaretskii
2023-07-09 11:23                                                                     ` Ihor Radchenko
2023-07-09 12:10                                                                     ` Po Lu
2023-07-09 13:03                                                                       ` Eli Zaretskii
2023-07-08 12:01                                                     ` Ihor Radchenko
2023-07-08 14:45                                                       ` Eli Zaretskii
2023-07-07  0:41                                     ` Po Lu
2023-07-07 12:42                                       ` Ihor Radchenko
2023-07-07 13:31                                         ` Po Lu
2023-07-07  0:27                                 ` Po Lu
2023-07-07 12:45                                   ` Ihor Radchenko
2023-07-06  0:27                     ` Po Lu
2023-07-06 10:48                       ` Ihor Radchenko
2023-07-06 12:15                         ` Po Lu
2023-07-06 14:10                         ` Eli Zaretskii
2023-07-06 15:09                           ` Ihor Radchenko
2023-07-06 15:18                             ` Eli Zaretskii
2023-07-06 16:36                               ` Ihor Radchenko
2023-07-06 17:53                                 ` Eli Zaretskii
2023-07-07  0:22                             ` Po Lu
2023-07-05  0:33 ` Po Lu
2023-07-05  2:31   ` Eli Zaretskii
2023-07-17 20:43     ` Hugo Thunnissen
2023-07-18  4:51       ` tomas
2023-07-18  5:25       ` Ihor Radchenko
2023-07-18  5:39         ` Po Lu
2023-07-18  5:49           ` Ihor Radchenko
2023-07-18 12:14         ` Hugo Thunnissen
2023-07-18 12:39           ` Async IO and queing process sentinels (was: Concurrency via isolated process/thread) Ihor Radchenko
2023-07-18 12:49             ` Ihor Radchenko
2023-07-18 14:12             ` Async IO and queing process sentinels Michael Albinus

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

  List information: https://www.gnu.org/software/emacs/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87zg49xfke.fsf@localhost \
    --to=yantar92@posteo.net \
    --cc=eliz@gnu.org \
    --cc=emacs-devel@gnu.org \
    --cc=luangruo@yahoo.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 public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).