unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
From: Philipp <p.stephani2@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: ubolonton@gmail.com, dancol@dancol.org, theo@thornhill.no,
	"João Távora" <joaotavora@gmail.com>,
	emacs-devel@gnu.org
Subject: Re: cc-mode fontification feels random
Date: Fri, 4 Jun 2021 12:59:45 +0200	[thread overview]
Message-ID: <DE8CDD93-34F9-4A47-93FF-72CA4500E372@gmail.com> (raw)
In-Reply-To: <83wnr9vrpj.fsf@gnu.org>



> Am 04.06.2021 um 12:39 schrieb Eli Zaretskii <eliz@gnu.org>:
> 
>> From: João Távora <joaotavora@gmail.com>
>> Cc: Eli Zaretskii <eliz@gnu.org>,  Daniel Colascione <dancol@dancol.org>,
>>  emacs-devel@gnu.org,  ubolonton@gmail.com
>> Date: Fri, 04 Jun 2021 11:08:48 +0100
>> 
>> - However, LSP support for fontification seems like it's potentially
>>  _less_ efficient than integrating something like tree-sitter as a C
>>  module in Emacs.  That's because the contents of the buffer and
>>  fontification results are continually transmitted back and forth via
>>  pipes and JSON format.
> 
> The communication of buffer contents to these agents/servers is indeed
> one aspect of the existing packages (those I had time to look at) that
> I personally am unhappy about.  Sending the whole buffer or its large
> chunks down the wire as buffer-substring (which requires encoding to
> be correct) is non-scalable, especially if it also requires conversion
> to JSON.

How bad is is actually; are there good numbers on this?
A while ago, I tested this hypothesis by transferring the `buffer-string' of xdisp.c to a Go module.  This goes through a full UTF-8 encoding and makes three copies (first, to create the string object; then, to copy it to the module interface; lastly, to make a Go string out of it), and it still only took a few milliseconds.
Modern CPUs are very good at copying memory, so maybe we're optimizing the wrong thing here.  We definitely should have good benchmarks and profiling data before deciding what to optimize.



  reply	other threads:[~2021-06-04 10:59 UTC|newest]

Thread overview: 274+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-04  3:16 cc-mode fontification feels random Daniel Colascione
2021-06-04  6:10 ` Eli Zaretskii
2021-06-04  7:10   ` Theodor Thornhill
2021-06-04 10:08     ` João Távora
2021-06-04 10:39       ` Eli Zaretskii
2021-06-04 10:59         ` Philipp [this message]
2021-06-04 11:05           ` João Távora
2021-06-04 11:22             ` Eli Zaretskii
2021-06-04 12:44               ` Dmitry Gutov
2021-06-04 13:46               ` João Távora
2021-06-04 14:11                 ` Eli Zaretskii
2021-06-04 11:18           ` Eli Zaretskii
2021-06-04 16:43       ` Jim Porter
     [not found]         ` <83k0n9l9pv.fsf@gnu.org>
2021-06-04 19:41           ` Jim Porter
2021-06-04 19:53             ` Eli Zaretskii
2021-06-04 20:05               ` Jim Porter
2021-06-04 20:11                 ` Joost Kremers
2021-06-05  6:51                   ` Eli Zaretskii
2021-06-05 10:14                     ` Joost Kremers
2021-06-05 11:31                       ` Eli Zaretskii
2021-06-05 12:12                         ` Joost Kremers
2021-06-05 13:23                     ` Stefan Monnier
2021-06-05 17:08                       ` Óscar Fuentes
2021-06-05 17:31                         ` Stefan Monnier
2021-06-05 17:32                         ` Eli Zaretskii
2021-06-05 18:46                     ` João Távora
2021-06-05  6:41                 ` Eli Zaretskii
2021-06-05  9:32                   ` João Távora
2021-06-05  9:59                     ` Ergus
2021-06-05 11:29                       ` Eli Zaretskii
2021-06-05 11:55                         ` Daniel Colascione
2021-06-05 12:27                           ` Eli Zaretskii
2021-06-05 17:59                             ` Jim Porter
2021-06-05 18:56                               ` Daniel Martín
2021-06-05 12:43                         ` Ergus
2021-06-05 13:59                       ` Remote GUI Emacs really works (was: cc-mode fontification feels random) Óscar Fuentes
2021-06-05 11:25                     ` cc-mode fontification feels random Eli Zaretskii
2021-06-05  9:46                   ` Ergus
2021-06-05 11:27                     ` Eli Zaretskii
2021-06-04 20:14               ` Yuri Khan
2021-06-04 10:25     ` Eli Zaretskii
2021-06-04 10:05   ` Daniel Colascione
2021-06-04 10:22     ` Eli Zaretskii
2021-06-04 10:34       ` João Távora
2021-06-04 10:43         ` Eli Zaretskii
2021-06-04 18:25         ` Stefan Monnier
2021-06-04 18:36           ` Daniel Colascione
2021-06-04 19:11             ` Eli Zaretskii
2021-06-04 19:16               ` Daniel Colascione
2021-06-04 19:26                 ` Eli Zaretskii
2021-06-04 19:33                   ` Daniel Colascione
2021-06-04 19:51                     ` Eli Zaretskii
2021-06-05  0:29             ` Stefan Monnier
2021-06-05  6:32               ` Eli Zaretskii
2021-06-04 19:07           ` Eli Zaretskii
2021-06-04 19:26             ` Daniel Colascione
2021-06-04 19:32               ` Eli Zaretskii
2021-06-04 10:41       ` Eli Zaretskii
2021-06-04 10:42 ` Ergus
2021-06-04 15:54 ` Alan Mackenzie
2021-06-04 18:30   ` Daniel Colascione
2021-06-06 11:37     ` Alan Mackenzie
2021-06-06 11:57       ` Eli Zaretskii
2021-06-06 12:27         ` Alan Mackenzie
2021-06-06 12:44           ` Eli Zaretskii
2021-06-06 14:19             ` Alan Mackenzie
2021-06-06 17:06               ` Eli Zaretskii
2021-06-06 17:44       ` Stefan Monnier
2021-06-06 18:00         ` Eli Zaretskii
2021-06-06 18:18           ` Stefan Monnier
2021-06-06 18:33             ` Daniel Colascione
2021-06-06 20:24               ` Stefan Monnier
2021-06-06 20:27                 ` Daniel Colascione
2021-06-06 20:38                   ` Stefan Monnier
2021-06-06 19:03             ` Eli Zaretskii
2021-06-06 20:28               ` Stefan Monnier
2021-06-07  7:35                 ` martin rudalics
2021-06-07 13:20                   ` Stefan Monnier
2021-06-07 13:37                     ` Eli Zaretskii
2021-06-08  0:06                       ` Daniel Colascione
2021-06-08 15:16                       ` Stefan Monnier
2021-06-07 15:58                     ` martin rudalics
2021-06-08  4:01                     ` Richard Stallman
2021-06-08 15:29                       ` Stefan Monnier
2021-06-08 15:52                         ` Eli Zaretskii
2021-06-08 16:36                           ` Stefan Monnier
2021-06-08 18:11                             ` Daniel Colascione
2021-06-08 18:25                               ` Eli Zaretskii
2021-06-08 18:28                                 ` Daniel Colascione
2021-06-08 18:54                                   ` Eli Zaretskii
2021-06-09 18:22                                 ` Alan Mackenzie
2021-06-09 18:36                                   ` Eli Zaretskii
2021-06-09 18:51                                     ` Daniel Colascione
2021-06-09 19:04                                       ` Eli Zaretskii
2021-06-09 20:07                                       ` chad
2021-06-10  6:43                                         ` Eli Zaretskii
2021-06-09 20:17                                       ` Dmitry Gutov
2021-06-09 21:03                                     ` Alan Mackenzie
2021-06-10  2:21                                       ` Daniel Colascione
2021-06-10  6:55                                         ` Eli Zaretskii
2021-06-10  6:58                                           ` Daniel Colascione
2021-06-10  7:19                                             ` Eli Zaretskii
2021-06-10  6:39                                       ` Eli Zaretskii
2021-06-10 16:46                                         ` Alan Mackenzie
2021-06-10 17:01                                           ` Eli Zaretskii
2021-06-10 17:07                                             ` Daniel Colascione
2021-06-10 17:22                                               ` Eli Zaretskii
2021-06-10 17:33                                                 ` Daniel Colascione
2021-06-10 17:39                                                   ` Eli Zaretskii
2021-06-10 17:40                                                 ` Óscar Fuentes
2021-06-10 17:44                                                   ` Eli Zaretskii
2021-06-11 16:11                                                 ` Alan Mackenzie
2021-06-11 17:53                                                   ` Eli Zaretskii
2021-06-11 18:02                                                     ` Daniel Colascione
2021-06-11 18:22                                                       ` Eli Zaretskii
2021-06-11 18:28                                                         ` Daniel Colascione
2021-06-11 19:12                                                           ` Alan Mackenzie
2021-06-11 19:23                                                           ` Eli Zaretskii
2021-06-11 18:47                                                         ` Alan Mackenzie
2021-06-11 19:32                                                           ` Eli Zaretskii
2021-06-11 19:46                                                             ` Alan Mackenzie
2021-06-11 19:50                                                               ` Eli Zaretskii
2021-06-11 18:42                                                       ` Stefan Monnier
2021-06-11 19:31                                                         ` Eli Zaretskii
2021-06-11 19:57                                                           ` Stefan Monnier
2021-06-11 23:25                                                             ` Ergus
2021-06-11 23:52                                                               ` Óscar Fuentes
2021-06-12  1:08                                                                 ` Ergus
2021-06-12  3:20                                                                   ` Stefan Monnier
2021-06-12 11:07                                                                     ` Ergus
2021-06-12  6:58                                                                   ` Eli Zaretskii
2021-06-12 11:01                                                                     ` Ergus
2021-06-12 11:25                                                                       ` Eli Zaretskii
2021-06-12 15:04                                                                         ` Ergus
2021-06-12 15:16                                                                           ` Eli Zaretskii
2021-06-12 15:23                                                                             ` Ergus
2021-06-12 15:35                                                                               ` Eli Zaretskii
2021-06-12 14:00                                                                     ` Stefan Monnier
2021-06-12 14:20                                                                       ` Eli Zaretskii
2021-06-12 14:33                                                                         ` Stefan Monnier
2021-06-12 15:06                                                                           ` Eli Zaretskii
2021-06-12 15:46                                                                             ` Stefan Monnier
2021-06-12  6:50                                                                 ` Eli Zaretskii
2021-06-12  5:20                                                               ` Theodor Thornhill
2021-06-12 13:40                                                                 ` Stefan Monnier
2021-06-12 15:56                                                                   ` Theodor Thornhill
2021-06-12 16:59                                                                     ` Ergus
2021-06-12 17:51                                                                       ` Theodor Thornhill
2021-06-12 17:25                                                                     ` Stefan Monnier
2021-06-12 17:53                                                                       ` Theodor Thornhill
2021-06-12 17:54                                                                       ` Ergus
2021-06-12 18:02                                                                       ` Daniel Colascione
2021-06-12 18:39                                                                         ` Ergus
2021-06-12  6:38                                                             ` Eli Zaretskii
2021-06-12 13:44                                                               ` Stefan Monnier
2021-06-12 14:14                                                                 ` Eli Zaretskii
2021-06-11 20:06                                                           ` Alan Mackenzie
2021-06-12  6:44                                                             ` Eli Zaretskii
2021-06-12  8:00                                                               ` Daniel Colascione
2021-06-12  8:08                                                                 ` Eli Zaretskii
2021-06-12  9:31                                                                   ` Alan Mackenzie
2021-06-11 19:48                                                         ` Eli Zaretskii
2021-06-11 18:34                                                     ` Alan Mackenzie
2021-06-10 17:26                                               ` Óscar Fuentes
2021-06-10 17:39                                               ` andrés ramírez
2021-06-10 21:06                                           ` Stefan Monnier
2021-06-11  6:14                                             ` Eli Zaretskii
2021-06-10 15:16                                       ` Ergus
2021-06-10 15:34                                         ` Óscar Fuentes
2021-06-10 19:06                                           ` Ergus
2021-06-10 19:28                                             ` Eli Zaretskii
2021-06-10 21:56                                               ` Ergus
2021-06-10 15:59                                         ` Jim Porter
2021-06-10 21:02                                         ` Stefan Monnier
2021-06-11 20:21                                           ` Ergus
2021-06-11 20:27                                             ` Stefan Monnier
2021-06-11 20:37                                               ` Daniel Colascione
2021-06-11 20:52                                                 ` Stefan Monnier
2021-06-12  6:46                                                   ` Eli Zaretskii
2021-06-12  8:03                                                     ` Daniel Colascione
2021-06-12  8:13                                                       ` Eli Zaretskii
2021-06-12 13:51                                                       ` Stefan Monnier
2021-06-12  8:47                                                   ` Daniele Nicolodi
2021-06-12  8:57                                                     ` tomas
2021-06-12 14:04                                                     ` Stefan Monnier
2021-06-09 19:05                                   ` Daniel Colascione
2021-06-09 19:11                                     ` Eli Zaretskii
2021-06-09 20:20                                     ` Alan Mackenzie
2021-06-09 20:36                                       ` Stefan Monnier
2021-06-10  7:01                                         ` Daniel Colascione
2021-06-10  7:21                                           ` Eli Zaretskii
2021-06-10  2:21                                       ` Daniel Colascione
2021-06-19  9:25                                         ` Alan Mackenzie
2021-06-19 15:24                                           ` Alan Mackenzie
2021-07-09 14:06                                             ` Daniel Colascione
2021-07-11 18:12                                               ` Stephen Leake
2021-07-15 18:13                                                 ` Perry E. Metzger
2021-07-15 22:43                                                   ` Tree Sitter (was Re: cc-mode fontification feels random) Perry E. Metzger
2021-07-19 23:49                                                     ` Stephen Leake
2021-07-20 14:53                                                       ` Perry E. Metzger
2021-07-21  0:04                                                         ` Stephen Leake
2021-07-21  1:28                                                           ` Stefan Monnier
2021-07-21 14:43                                                             ` Perry E. Metzger
2021-07-21 16:21                                                               ` Daniel Colascione
2021-07-21 19:15                                                                 ` Perry E. Metzger
2021-07-22  1:16                                                                   ` Daniel Colascione
2021-07-22 13:18                                                                     ` Perry E. Metzger
2021-07-22 13:49                                                                     ` Yuan Fu
2021-07-24 20:05                                                                     ` [SPAM UNSURE] " Stephen Leake
2021-07-25  0:41                                                                       ` Daniel Colascione
2021-07-26  4:24                                                                         ` [SPAM UNSURE] " Stephen Leake
2021-07-25 18:01                                                                       ` Perry E. Metzger
2021-07-22 14:00                                                           ` Perry E. Metzger
2021-07-24  1:17                                                             ` Richard Stallman
2021-07-25 16:13                                                               ` Stephen Leake
2021-07-25 19:52                                                                 ` Ada (was Re: Tree Sitter) Perry E. Metzger
2021-07-26  5:05                                                                   ` Stephen Leake
2021-07-26  9:42                                                                     ` Stephen Leake
2021-07-26 14:01                                                                       ` Perry E. Metzger
2021-07-26 13:45                                                                     ` Perry E. Metzger
2021-07-27  0:26                                                                   ` Richard Stallman
2021-07-27 12:38                                                                     ` Perry E. Metzger
2021-07-26  2:23                                                                 ` Tree Sitter (was Re: cc-mode fontification feels random) John Yates
2021-07-24 19:59                                                             ` Stephen Leake
2021-07-24 21:21                                                               ` OFF-TOPIC: Ada availability (was: Tree Sitter) Óscar Fuentes
2021-07-25  7:31                                                                 ` tomas
2021-06-08 18:11                             ` cc-mode fontification feels random Eli Zaretskii
2021-06-08 21:25                               ` Stefan Monnier
2021-06-09  3:39                         ` Richard Stallman
2021-06-09  8:34                         ` martin rudalics
2021-06-09 13:14                           ` `open-paren-in-column-0-is-defun-start` (was: cc-mode fontification feels random) Stefan Monnier
2021-06-09 15:15                             ` Yuri Khan
2021-06-09 15:16                               ` Yuri Khan
2021-06-12 17:29                           ` cc-mode fontification feels random João Távora
2021-06-13  8:50                             ` martin rudalics
2021-06-13  9:05                               ` João Távora
2021-06-13  9:39                                 ` martin rudalics
2021-06-13 10:06                                   ` João Távora
2021-06-13 14:52                                     ` martin rudalics
2021-06-13 15:25                                       ` João Távora
2021-06-14  8:29                                         ` martin rudalics
2021-06-14  8:40                                           ` João Távora
2021-06-14  9:00                                             ` martin rudalics
2021-06-14  9:14                                               ` João Távora
2021-06-14 11:28                                           ` Eli Zaretskii
2021-06-14 14:39                                           ` Stefan Monnier
2021-06-15 22:38                                             ` Ergus
2021-06-07 12:08                 ` Eli Zaretskii
2021-06-08 15:22                   ` Stefan Monnier
2021-06-08 15:46                     ` Eli Zaretskii
2021-06-05 20:25   ` Dmitry Gutov
2021-06-06 11:53     ` Alan Mackenzie
2021-06-06 17:08       ` Dmitry Gutov
2021-08-30 18:50 ` [PATCH] " Alan Mackenzie
2021-08-30 19:03   ` Perry E. Metzger
2021-08-30 19:18     ` Alan Mackenzie
2021-08-30 19:25   ` Eli Zaretskii
2021-08-30 19:28     ` Daniel Colascione
2021-08-30 19:37       ` Eli Zaretskii
2021-08-30 20:11       ` Stefan Monnier
2021-08-31 10:54         ` Alan Mackenzie
2021-08-31 13:23           ` Eli Zaretskii
2021-08-31 16:02             ` Alan Mackenzie
2021-08-31 16:21               ` Eli Zaretskii
2021-08-31 16:46                 ` Alan Mackenzie
2021-08-31 17:02                   ` Eli Zaretskii
2021-08-31 18:56           ` Stefan Monnier
2021-08-31 21:17             ` Alan Mackenzie
2021-08-31 21:47               ` Stefan Monnier
2021-10-22 20:13               ` [Committed PATCH] " Alan Mackenzie
2021-10-24 20:18                 ` Alan Mackenzie
2021-08-31 13:18         ` [PATCH] " Eli Zaretskii
2021-08-30 20:03     ` Alan Mackenzie
2021-08-31 11:53       ` Eli Zaretskii

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=DE8CDD93-34F9-4A47-93FF-72CA4500E372@gmail.com \
    --to=p.stephani2@gmail.com \
    --cc=dancol@dancol.org \
    --cc=eliz@gnu.org \
    --cc=emacs-devel@gnu.org \
    --cc=joaotavora@gmail.com \
    --cc=theo@thornhill.no \
    --cc=ubolonton@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 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).