Mercurial > hg > xemacs-beta
view src/getpagesize.h @ 1298:1b4bc72f433e
[xemacs-hg @ 2003-02-14 12:05:06 by ben]
speedups to build process
autoload.el: Factor out common code in generate-{c-,}file-autoloads-1 into new
function generate-autoload-ish-1. \(I was originally going to use
this for custom as well but ended up thinking better of it.)
cus-dep.el: Cache the old computed values in custom-load.el and reuse them as
necessary, to speed up running cus-dep (which would take 25-30
seconds to do all files in lisp/*, lisp/*/* on my Pentium III
700). Use `message' not `princ' to get correct newline behavior.
Output messages showing each file we do actually process.
update-elc-2.el: Rewrite algorithm to be much faster -- cache calls to
directory-files and don't make needless calls to file-exists-p,
file-directory-p because they're way way slow.
Autoload early and only when update-elc has told us to.
update-elc.el: If no files need byte compilation, signal to update-elc-2 to do
any necessary autoload updating (using the file REBUILD_AUTOLOADS)
rather than doing it ourselves, which would be way slow. Ignore
updates to custom-load.el and auto-autoloads.el when checking to
see whether autoloads need updating. Optimize out many
unnecessary calls to file-exists-p to speed it up somewhat. (####
The remaining time is 50% or more in locate-file; this is
presumably because, even though it has a cache, it's still
statting each file to determine it's actually there. By calling
directory-files ourselves, building a tree, and then looking in
that tree, we could drastically shorten the time needed to do the
locate operation.)
| author | ben |
|---|---|
| date | Fri, 14 Feb 2003 12:05:07 +0000 |
| parents | 8de8e3f6228a |
| children | aa5ed11f473b |
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/* This file is part of XEmacs. XEmacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Synched up with: FSF 19.30. */ #ifndef INCLUDED_getpagesize_h_ #define INCLUDED_getpagesize_h_ /* Emulate getpagesize on systems that lack it. */ #if 0 #ifdef __hpux #include <sys/types.h> static size_t getpagesize() { return( 4096 ); } #define HAVE_GETPAGESIZE #endif #endif #ifndef HAVE_GETPAGESIZE #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #ifdef _SC_PAGESIZE #define getpagesize() sysconf(_SC_PAGESIZE) #else #include <sys/param.h> #ifdef EXEC_PAGESIZE #define getpagesize() EXEC_PAGESIZE #else #ifdef NBPG #define getpagesize() NBPG * CLSIZE #ifndef CLSIZE #define CLSIZE 1 #endif /* no CLSIZE */ #else /* no NBPG */ #if (defined (sparc) && defined (USG)) || defined (SOLARIS2) #define getpagesize() PAGESIZE #else /* not Solaris 2 */ #ifdef NBPC #define getpagesize() NBPC #else /* no NBPC */ #ifdef PAGESIZE #define getpagesize() PAGESIZE #endif #endif /* NBPC */ #endif /* not Solaris 2 */ #endif /* no NBPG */ #endif /* no EXEC_PAGESIZE */ #endif /* _SC_PAGESIZE */ #endif /* not HAVE_GETPAGESIZE */ #endif /* INCLUDED_getpagesize_h_ */