octave-nkf/gnulib-hg: lib/gettime.c annotate

annotate lib/gettime.c @ 5662:42df9db003cc

* modules/gethrxtime: New file. * modules/xnanosleep (Files): Add m4/xnanosleep.m4. (Depends-on): Add gethrxtime. (configure.ac): Add gl_XNANOSLEEP. (Makefile.am): Remove lib_SOURCES line. * lib/gethrxtime.h, lib/gethrxtime.c, lib/xtime.h: New files. * lib/timespec.h (gettime): Return void, since it always succeeds now. All uses changed. * lib/gettime.c (gettime) Likewise. [HAVE_NANOTIME]: Prefer nanotime. Assume gettimeofday succeeds, as POSIX requires. Assime time () succeeds, since other code already does. * lib/xnanosleep.c: Include xtime.h and gethrxtime.h, not xalloc.h. (timespec_subtract): Remove. (NANOSLEEP_BUG_WORKAROUND): New constant. (xnanosleep): Use gethrxtime rather than gettime; this simplifies things considerably. Use it only on GNU/Linux hosts, since the workaround shouldn't be needed elsewhere. * m4/gethrxtime.m4, m4/xnanosleep.m4: New files. * m4/gettime.m4 (gl_GETTIME): Check for nanotime.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Sat, 26 Feb 2005 08:18:27 +0000
parents	eb3efcec6ae2
children	a48fb0e98c8c

rev	line source
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	1 /* gettime -- get the system clock
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	2 Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	3
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	4 This program is free software; you can redistribute it and/or modify
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	5 it under the terms of the GNU General Public License as published by
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	6 the Free Software Foundation; either version 2, or (at your option)
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	7 any later version.
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	8
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	9 This program is distributed in the hope that it will be useful,
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	10 but WITHOUT ANY WARRANTY; without even the implied warranty of
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	12 GNU General Public License for more details.
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	13
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	14 You should have received a copy of the GNU General Public License
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	15 along with this program; if not, write to the Free Software Foundation,
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	17
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	18 /* Written by Paul Eggert. */
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	19
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	20 #ifdef HAVE_CONFIG_H
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	21 # include <config.h>
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	22 #endif
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	23
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	24 #include "timespec.h"
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	25
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	26 /* Get the system time into TS. /
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	27
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	28 void
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	29 gettime (struct timespec *ts)
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	30 {
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	31 #if HAVE_NANOTIME
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	32 nanotime (ts);
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	33 #else
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	34
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	35 # if defined CLOCK_REALTIME && HAVE_CLOCK_GETTIME
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	36 if (clock_gettime (CLOCK_REALTIME, ts) == 0)
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	37 return;
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	38 # endif
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	39
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	40 # if HAVE_GETTIMEOFDAY
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	41 {
3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	42 struct timeval tv;
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	43 gettimeofday (&tv, NULL);
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	44 ts->tv_sec = tv.tv_sec;
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	45 ts->tv_nsec = tv.tv_usec * 1000;
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	46 }
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	47 # else
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	48 ts->tv_sec = time (NULL);
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	49 ts->tv_nsec = 0;
42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	50 # endif
5059 eb3efcec6ae2 Don't assume that gettimeofday and settimeofday exist or work. Paul Eggert <eggert@cs.ucla.edu> parents: 3774 diff changeset	51
5662 42df9db003cc * modules/gethrxtime: New file. Paul Eggert <eggert@cs.ucla.edu> parents: 5059 diff changeset	52 #endif
3768 3f9408503b6e new file, from Paul Eggert Jim Meyering <jim@meyering.net> parents: diff changeset	53 }

Mercurial > hg > octave-nkf > gnulib-hg

annotate lib/gettime.c @ 5662:42df9db003cc