From: Tadeus Prastowo <tadeus.prastowo@unitn.it>
To: Alan Mackenzie <acm@muc.de>
Cc: emacs-devel <emacs-devel@gnu.org>
Subject: Re: Processing speed in large C++ raw strings.
Date: Fri, 26 Apr 2019 22:15:28 +0200 [thread overview]
Message-ID: <CAN-HRFaPsVzNocOdBcUr4xb5ahuAnboaJonczMh3nQcL_DZzdQ@mail.gmail.com> (raw)
In-Reply-To: <20190425183615.GB19807@ACM>
Hi Alan,
On Thu, Apr 25, 2019 at 8:41 PM Alan Mackenzie <acm@muc.de> wrote:
> I have now optimized CC Mode, such that each such self-insert-command
> now takes around 0.07s-0.1s. I used two strategies for this: (i) breaking out
> of (expensive) fontification routines early, when the region being
> fontified is nothing but a string; (ii) Not fontifying the entire raw
> string for a change to only a small part of it.
I have been working with C++ template metaprograms for two years, and
since quite early, I have experienced CC Mode being very sluggish that
I often switch back-and-forth between cc-mode and text-mode.
I have not made any report since I don't feel like sparing my time to
collect some data for the report now that switching to text-mode does
the trick. So, since you are already at it, perhaps you may want to
find out why even scrolling the buffer in cc-mode is very slow when
visiting the file at
http://git.savannah.nongnu.org/cgit/tice.git/plain/tests/v1/test-v1_internals_program.cpp?
Specifically, I built master at commit
82fc8ca6ba179596928db614ab903e44968ef44e and fired the result with
`emacs -Q' to visit the file locally. Then, to experience the
sluggishness, I pressed M-> followed by M-v several times. To further
experience it, I started to edit some template parameters, such as
changing `node1' to node `node5' in line 680.
Thank you very much for your work.
> --
> Alan Mackenzie (Nuremberg, Germany).
--
Best regards,
Tadeus
next prev parent reply other threads:[~2019-04-26 20:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-25 18:36 Processing speed in large C++ raw strings Alan Mackenzie
2019-04-26 1:25 ` Dmitry Gutov
2019-04-26 20:15 ` Tadeus Prastowo [this message]
2019-04-27 2:15 ` Stefan Monnier
2019-04-27 10:37 ` Tadeus Prastowo
2019-04-27 11:37 ` Alan Mackenzie
2019-04-27 15:35 ` Tadeus Prastowo
2019-04-27 17:29 ` Alan Mackenzie
2019-04-30 14:44 ` Tadeus Prastowo
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