Mercurial > hg > xemacs-beta
view src/s/cxux.h @ 4499:eb82259f265d
Port write-region-inhibit-sync, allowing avoidance of bad FS performance.
See http://shaver.off.net/diary/2008/05/25/fsyncers-and-curveballs/ for more
details.
2008-08-09 Aidan Kehoe <kehoea@parhasard.net>
Integrate Romain Francoise' 2005-09-14 (pre-GPLV3) GNU change,
which can allow much better performace with some stupid
filesystems:
* fileio.c (write_region_inhibit_fsync): New variable.
(Fwrite_region): Use it to skip call to fsync.
(syms_of_fileio): Initialize it.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Sat, 09 Aug 2008 16:44:46 +0200 |
parents | ecf1ebac70d8 |
children |
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/* Header file for Harris CXUX. Copyright (C) 1994 Free Software Foundation, Inc. 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 19.31. */ /* * Define symbols to identify the version of Unix this is. * Define all the symbols that apply correctly. */ #define USG5 #define USG #ifndef _CX_UX #define _CX_UX 1 #endif /* Define this symbol if you are running CX/UX 7.0 or later (7.0 introduced * support for ELF files, and while we still build emacs in COFF format, the * way it is linked is different for 7.0). */ /* #define USING_CX_UX_7 */ #ifdef USING_CX_UX_7 #define LINKER "/usr/sde/coff/usr/bin/ld" #define LD_SWITCH_SYSTEM "-L/usr/sde/coff/usr/lib -zzero_word" #define START_FILES "pre-crt0.o /usr/sde/coff/usr/lib/crt0.o /usr/sde/coff/usr/lib/m88100.o" #else /* !USING_CX_UX_7 */ #ifdef _M88K #define START_FILES "pre-crt0.o /lib/crt0.o" #else #define START_FILES "cxux-crt0.o /lib/crt0.o" #endif #endif /* USING_CX_UX_7 */ /* SYSTEM_TYPE should indicate the kind of system you are using. It sets the Lisp variable system-type. */ #define SYSTEM_TYPE "usg-unix-v" #define C_SWITCH_SYSTEM "-Xa" /* Letter to use in finding device name of first pty, if system supports pty's. 'a' means it is /dev/ptya0 */ #define FIRST_PTY_LETTER 'A' #define PTY_ITERATION for (c = 'A'; c <= 'P'; c++) for (i = 0; i < 16; i++) /* If your system uses COFF (Common Object File Format) then define the preprocessor symbol "COFF". */ #define COFF /* define MAIL_USE_FLOCK if the mailer uses flock to interlock access to /usr/spool/mail/$USER. The alternative is that a lock file named /usr/spool/mail/$USER.lock. */ #define MAIL_USE_FLOCK /* The symbol in the kernel where the load average is found is named _avenrun. */ #define LDAV_SYMBOL "_avenrun" #define KERNEL_FILE "/unix" /* There are too many kludges required to redefine malloc - use the system one */ #define SYSTEM_MALLOC /* const really does work, but I can't get configure to run the C compiler * with the right options so it figures that out. */ #undef const /* * <pwd.h> already declares getpwuid, and with a uid_t argument in ANSI C * mode. Define this so xrdb.c will compile */ #ifdef __STDC__ #define DECLARE_GETPWUID_WITH_UID_T #endif