From: solidius4747@gmail.com
To: help-gnu-emacs@gnu.org
Subject: Re: A guide on setting up C/C++ development environment for Emacs
Date: Wed, 27 Aug 2014 08:01:11 -0700 (PDT) [thread overview]
Message-ID: <657f2c39-422b-4289-a02e-3d03dc386166@googlegroups.com> (raw)
In-Reply-To: <mailman.7608.1409150189.1147.help-gnu-emacs@gnu.org>
Vào 21:39:59 UTC+7 Thứ tư, ngày 27 tháng tám năm 2014, Thien-Thi Nguyen đã viết:
> () Tu Hoang Do <solidius4747@gmail.com>
>
> () Wed, 27 Aug 2014 20:18:27 +0700
>
>
>
> CEDET is not slow.
>
>
>
> Maybe it's time someone implemented a MEEPS
>
> (Millions of Emacs Evaluations Per Second) counter.
>
> Then, we can qualify that statement w/ "on a N MEEPS"
>
> system and people on old M MEEPS (M<<N) computers can
>
> snort w/ wonder... :-D
>
>
>
> --
>
> Thien-Thi Nguyen
>
> GPG key: 4C807502
>
> (if you're human and you know it)
>
> read my lisp: (responsep (questions 'technical)
>
> (not (via 'mailing-list)))
>
> => nil
Because real parsing takes time and such a task, while possible using Emacs Lisp, but is too much for current Emacs implementation. CEDET does some nice optimizations to speed it up as fast as it can: idle parsing, caching and incremental parsing to reduce computational time. Consider someone using Clang to generate tag database: https://github.com/drothlis/clang-ctags#performance:
"Running clang-ctags over a much larger input, such as the entire llvm C/C++ sources (7k files, 1.8 million lines of code) took 98 minutes and a peak memory usage of 140MB."
It's just 1.8 million lines of code. And that's Clang. GNU Global only needs a few minutes to generate tag database for Linux kernel, which is more than 14 million lines of code and more than 40k files. Do you say Clang is worse than GNU Global?
next prev parent reply other threads:[~2014-08-27 15:01 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-27 7:05 A guide on setting up C/C++ development environment for Emacs solidius4747
2014-08-27 12:48 ` Dmitriy Igrishin
2014-08-27 13:18 ` Tu Hoang Do
2014-08-27 14:15 ` Dmitriy Igrishin
[not found] ` <CAMd9FiKzwc1QKa3KtZPFpTGs86bupRptFqL_WwCSE3kPGARXfg@mail.gmail.com>
2014-08-27 14:53 ` Fwd: " Tu Hoang Do
[not found] ` <CAAfz9KNL25WboPXG87Azd_6yVr8zrx6hNrCsmuWs6w_XTvdspQ@mail.gmail.com>
[not found] ` <CAMd9FiJyjk78a-3yMatvca3qp+pr4O+GmDp03ZqFSkpAEoxhGw@mail.gmail.com>
2014-08-27 18:14 ` Tu Hoang Do
2014-08-27 18:15 ` Jai Dayal
2014-08-27 18:37 ` Óscar Fuentes
2014-08-27 18:42 ` Jai Dayal
2014-08-27 18:42 ` Jai Dayal
2014-08-27 18:52 ` Óscar Fuentes
2014-08-27 19:05 ` Jai Dayal
2014-08-27 19:28 ` Óscar Fuentes
2014-08-27 19:32 ` Jai Dayal
2014-08-27 20:06 ` Óscar Fuentes
2014-08-27 20:11 ` Jai Dayal
2014-08-27 20:57 ` Óscar Fuentes
2014-08-27 23:17 ` Jai Dayal
2014-08-27 23:47 ` Óscar Fuentes
[not found] ` <mailman.7678.1409181490.1147.help-gnu-emacs@gnu.org>
2014-08-28 3:30 ` Rusi
2014-08-28 3:33 ` Jai Dayal
2014-08-28 4:29 ` Óscar Fuentes
[not found] ` <mailman.7693.1409200204.1147.help-gnu-emacs@gnu.org>
2014-08-28 5:39 ` Rusi
2014-08-28 12:27 ` Jai Dayal
[not found] ` <mailman.7714.1409228889.1147.help-gnu-emacs@gnu.org>
2014-08-28 15:53 ` solidius4747
2014-08-28 21:22 ` Óscar Fuentes
2014-08-28 22:24 ` Stefan Monnier
2014-08-28 23:28 ` Dmitry
2014-08-29 0:02 ` Óscar Fuentes
[not found] ` <mailman.7793.1409270604.1147.help-gnu-emacs@gnu.org>
2014-08-29 3:35 ` Stefan Monnier
2014-08-29 6:06 ` David Engster
2014-08-29 13:09 ` Óscar Fuentes
2014-08-29 13:16 ` Jai Dayal
2014-08-29 13:45 ` Óscar Fuentes
2014-08-29 13:52 ` David Engster
2014-08-29 14:16 ` Óscar Fuentes
[not found] ` <mailman.7808.1409292429.1147.help-gnu-emacs@gnu.org>
2014-08-29 13:15 ` Rusi
2014-08-28 17:08 ` Rusi
2014-08-28 17:13 ` Jai Dayal
2014-08-28 19:43 ` Marcin Borkowski
2014-08-28 19:47 ` Jai Dayal
2014-08-28 20:15 ` Marcin Borkowski
[not found] ` <mailman.7743.1409246061.1147.help-gnu-emacs@gnu.org>
2014-08-28 17:26 ` Rusi
2014-08-28 23:01 ` Thorsten Jolitz
2014-08-27 18:45 ` Óscar Fuentes
2014-08-27 14:39 ` Thien-Thi Nguyen
[not found] ` <mailman.7608.1409150189.1147.help-gnu-emacs@gnu.org>
2014-08-27 15:01 ` solidius4747 [this message]
2014-08-27 18:31 ` Óscar Fuentes
[not found] <mailman.127014.1409321829.1146.help-gnu-emacs@gnu.org>
2014-08-29 14:33 ` Tory S. Anderson
2014-08-29 17:21 ` Jai Dayal
2014-08-29 18:11 ` Marcin Borkowski
2014-08-29 18:15 ` Jai Dayal
2014-08-29 18:27 ` Marcin Borkowski
2014-08-29 18:34 ` Jai Dayal
2014-08-29 19:17 ` Marcin Borkowski
[not found] ` <mailman.7863.1409335908.1147.help-gnu-emacs@gnu.org>
2014-08-30 3:43 ` Rusi
2014-08-30 7:24 ` Thien-Thi Nguyen
2014-08-30 21:27 ` Jai Dayal
[not found] ` <mailman.7951.1409434065.1147.help-gnu-emacs@gnu.org>
2014-08-31 1:53 ` Rusi
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