From: Dmitry Gutov <dgutov@yandex.ru>
To: Alan Mackenzie <acm@muc.de>
Cc: emacs-devel@gnu.org
Subject: Re: [Emacs-diffs] comment-cache 223d16f 2/3: Apply `comment-depth' text properties when calling `back_comment'.
Date: Mon, 14 Mar 2016 19:52:27 +0200 [thread overview]
Message-ID: <04defc46-af0c-6345-1570-83c1ae4ce14f@yandex.ru> (raw)
In-Reply-To: <20160314172940.GG1894@acm.fritz.box>
On 03/14/2016 07:29 PM, Alan Mackenzie wrote:
> CC Mode doesn't use syntax-ppss. It would be too much work to put it in,
> particularly as that function's future is unclear.
Could you please avoid FUD like that?
>> IIRC, Stefan posted a patch, which was like 10 lines long.
>
> Sorry, patch for what? I've lost the context.
That one:
http://lists.gnu.org/archive/html/emacs-devel/2016-03/msg00593.html
http://lists.gnu.org/archive/html/emacs-devel/2016-03/msg00619.html
Any other grunt work I can assist with?
>> Could you please try it already, so we can move on to discussing the
>> actual performance problems of syntax-ppss, instead of theoretical ones?
>
> It would be a lot of work. Perhaps you might like to undertake it.
Applying a patch and doing the measurements is a lot of work?
>> The approach X is out of the question, because my approach Y is usually
>> N times faster!
>
>> Why is it out of the question? Can I say "premature optimization"?
>
> You could, but it would sound a bit silly.
Considering the kind of arguments you provide, it's looking less and
less silly with each message.
>> (parse-partial-sexp 1 (point)) on line 1661 takes ~0.002s here.
>
>> (parse-partial-sexp 1 (point-max)) takes just a little above that.
>
>> How do these timings translate into whole seconds of waiting after
>> pressing '/'?
>
> They don't. It was CC Mode's indentation engine's scanning, not the raw
> parse-partial-sexp scanning.
I guess we found the problem, then. And the cache's performance is
unlikely to change much.
next prev parent reply other threads:[~2016-03-14 17:52 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20160308132530.861.91488@vcs.savannah.gnu.org>
[not found] ` <E1adHdj-0000FI-0W@vcs.savannah.gnu.org>
2016-03-08 14:19 ` [Emacs-diffs] comment-cache 223d16f 2/3: Apply `comment-depth' text properties when calling `back_comment' Stefan Monnier
2016-03-08 18:30 ` Alan Mackenzie
2016-03-08 18:42 ` Stefan Monnier
2016-03-08 20:07 ` Alan Mackenzie
2016-03-08 21:22 ` Dmitry Gutov
2016-03-08 21:43 ` Alan Mackenzie
2016-03-09 0:17 ` Stefan Monnier
2016-03-09 1:54 ` Stefan Monnier
2016-03-09 10:49 ` Problems with syntax-ppss: Was [... Apply `comment-depth' text properties when calling `back_comment'.] Alan Mackenzie
2016-03-09 13:11 ` Stefan Monnier
2016-03-09 14:19 ` Alan Mackenzie
2016-03-09 19:16 ` Stefan Monnier
2016-03-09 19:22 ` Clément Pit--Claudel
2016-03-09 19:37 ` Alan Mackenzie
2016-03-09 21:40 ` Stefan Monnier
2016-03-10 13:01 ` Alan Mackenzie
2016-03-10 14:52 ` Stefan Monnier
2016-03-10 15:29 ` Alan Mackenzie
2016-03-10 16:45 ` Stefan Monnier
2016-03-10 17:25 ` Alan Mackenzie
2016-03-10 17:34 ` Stefan Monnier
2016-03-10 19:08 ` Alan Mackenzie
2016-03-10 23:10 ` Stefan Monnier
2016-03-11 12:50 ` Stefan Monnier
2016-03-11 20:48 ` Alan Mackenzie
2016-03-11 22:35 ` Stefan Monnier
2016-03-11 23:08 ` Alan Mackenzie
2016-03-11 23:09 ` Clément Pit--Claudel
2016-03-11 23:31 ` Stefan Monnier
2016-03-10 23:31 ` John Wiegley
2016-03-11 2:08 ` Clément Pit--Claudel
2016-03-11 3:08 ` Stefan Monnier
2016-03-11 7:27 ` Andreas Röhler
2016-03-11 12:08 ` Alan Mackenzie
2016-03-11 12:30 ` Dmitry Gutov
2016-03-11 13:04 ` Alan Mackenzie
2016-03-11 20:21 ` Dmitry Gutov
2016-03-12 20:19 ` Andreas Röhler
2016-03-12 20:38 ` Dmitry Gutov
2016-03-12 20:45 ` Alan Mackenzie
2016-03-13 14:56 ` Andreas Röhler
2016-03-10 13:41 ` Stefan Monnier
2016-03-09 17:06 ` How do you check if the current point is in a comment or a string? (Was Re: Problems with syntax-ppss: Was [... Apply `comment-depth' text properties when calling `back_comment'.]) Clément Pit--Claudel
2016-03-09 17:24 ` Kaushal Modi
2016-03-09 17:56 ` Clément Pit--Claudel
2016-03-09 19:19 ` Kaushal Modi
2016-03-09 19:34 ` Clément Pit--Claudel
2016-03-10 14:28 ` Stefan Monnier
2016-03-10 15:03 ` Clément Pit--Claudel
2016-03-10 15:20 ` Stefan Monnier
2016-03-10 17:21 ` Clément Pit--Claudel
2016-03-12 20:45 ` Andreas Röhler
2016-03-12 20:53 ` Clément Pit--Claudel
2016-03-09 16:37 ` [Emacs-diffs] comment-cache 223d16f 2/3: Apply `comment-depth' text properties when calling `back_comment' Richard Stallman
2016-03-09 17:06 ` Dmitry Gutov
2016-03-10 21:20 ` Richard Stallman
2016-03-11 0:26 ` Dmitry Gutov
2016-03-11 12:22 ` Alan Mackenzie
2016-03-11 12:52 ` Stefan Monnier
2016-03-11 16:20 ` Drew Adams
2016-03-09 17:48 ` Alan Mackenzie
2016-03-09 19:58 ` martin rudalics
2016-03-09 20:36 ` Eli Zaretskii
2016-03-09 20:53 ` John Wiegley
2016-03-13 9:30 ` Daniel Colascione
2016-03-13 15:28 ` Stefan Monnier
2016-03-13 16:24 ` Eli Zaretskii
2016-03-13 16:27 ` Daniel Colascione
2016-03-13 17:19 ` Eli Zaretskii
2016-03-14 1:13 ` Stefan Monnier
2016-03-14 16:10 ` Eli Zaretskii
2016-03-11 18:27 ` Alan Mackenzie
2016-03-12 17:08 ` Alan Mackenzie
2016-03-12 18:10 ` martin rudalics
2016-03-12 18:22 ` Paul Eggert
2016-03-12 18:46 ` martin rudalics
2016-03-12 19:36 ` Alan Mackenzie
2016-03-13 9:26 ` martin rudalics
2016-03-13 11:52 ` Alan Mackenzie
2016-03-13 12:08 ` martin rudalics
2016-03-13 12:49 ` Alan Mackenzie
2016-03-13 13:32 ` martin rudalics
2016-03-13 17:59 ` Eli Zaretskii
2016-03-13 20:09 ` martin rudalics
2016-03-14 1:15 ` Paul Eggert
2016-03-14 7:42 ` martin rudalics
2016-03-14 11:22 ` Alan Mackenzie
2016-03-14 19:41 ` martin rudalics
2016-03-14 20:58 ` Alan Mackenzie
2016-03-14 16:15 ` Eli Zaretskii
2016-03-14 19:41 ` martin rudalics
2016-03-14 17:00 ` Paul Eggert
2016-03-14 19:41 ` martin rudalics
2016-03-14 16:09 ` Eli Zaretskii
2016-03-13 18:00 ` Eli Zaretskii
2016-03-13 18:41 ` Alan Mackenzie
2016-03-12 20:56 ` Dmitry Gutov
2016-03-12 21:29 ` Clément Pit--Claudel
2016-03-12 21:59 ` Dmitry Gutov
2016-03-12 21:58 ` Alan Mackenzie
2016-03-12 22:16 ` Dmitry Gutov
2016-03-13 17:59 ` Alan Mackenzie
2016-03-13 22:49 ` Stefan Monnier
2016-03-14 12:51 ` Alan Mackenzie
2016-03-15 3:14 ` Stefan Monnier
2016-03-14 1:13 ` Dmitry Gutov
2016-03-14 1:30 ` Stefan Monnier
2016-03-14 1:45 ` Dmitry Gutov
2016-03-14 2:18 ` Stefan Monnier
2016-03-14 12:23 ` Alan Mackenzie
2016-03-14 16:15 ` Dmitry Gutov
2016-03-14 17:29 ` Alan Mackenzie
2016-03-14 17:52 ` Dmitry Gutov [this message]
2016-03-14 18:46 ` Alan Mackenzie
2016-03-14 19:33 ` Dmitry Gutov
2016-03-14 21:20 ` Alan Mackenzie
2016-03-15 3:10 ` Stefan Monnier
2016-03-17 0:47 ` Dmitry Gutov
2016-03-17 18:47 ` Alan Mackenzie
2016-03-18 1:24 ` Dmitry Gutov
2016-03-10 21:20 ` Richard Stallman
2016-03-10 22:24 ` Alan Mackenzie
2016-03-12 1:53 ` Richard Stallman
2016-03-12 3:28 ` Stefan Monnier
2016-03-12 19:28 ` Richard Stallman
2016-03-09 17:51 ` Clément Pit--Claudel
2016-03-10 21:20 ` Richard Stallman
2016-03-10 21:38 ` Clément Pit--Claudel
2016-03-12 1:53 ` Richard Stallman
2016-03-10 7:14 ` Andreas Röhler
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