mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-07 13:54:33 +00:00
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/* Copyright (C) 2005-2016 Free Software Foundation, Inc.
|
|
Contributed by Richard Henderson <rth@redhat.com>.
|
|
|
|
This file is part of the GNU Offloading and Multi Processing Library
|
|
(libgomp).
|
|
|
|
Libgomp 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 3, or (at your option)
|
|
any later version.
|
|
|
|
Libgomp 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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* This file contains system specific timer routines. It is expected that
|
|
a system may well want to write special versions of each of these.
|
|
|
|
The following implementation uses the most simple POSIX routines.
|
|
If present, POSIX 4 clocks should be used instead. */
|
|
|
|
#include "libgomp.h"
|
|
#include <unistd.h>
|
|
#if TIME_WITH_SYS_TIME
|
|
# include <sys/time.h>
|
|
# include <time.h>
|
|
#else
|
|
# if HAVE_SYS_TIME_H
|
|
# include <sys/time.h>
|
|
# else
|
|
# include <time.h>
|
|
# endif
|
|
#endif
|
|
|
|
|
|
double
|
|
omp_get_wtime (void)
|
|
{
|
|
#ifdef HAVE_CLOCK_GETTIME
|
|
struct timespec ts;
|
|
# ifdef CLOCK_MONOTONIC
|
|
if (clock_gettime (CLOCK_MONOTONIC, &ts) < 0)
|
|
# endif
|
|
clock_gettime (CLOCK_REALTIME, &ts);
|
|
return ts.tv_sec + ts.tv_nsec / 1e9;
|
|
#else
|
|
struct timeval tv;
|
|
gettimeofday (&tv, NULL);
|
|
return tv.tv_sec + tv.tv_usec / 1e6;
|
|
#endif
|
|
}
|
|
|
|
double
|
|
omp_get_wtick (void)
|
|
{
|
|
#ifdef HAVE_CLOCK_GETTIME
|
|
struct timespec ts;
|
|
# ifdef CLOCK_MONOTONIC
|
|
if (clock_getres (CLOCK_MONOTONIC, &ts) < 0)
|
|
# endif
|
|
clock_getres (CLOCK_REALTIME, &ts);
|
|
return ts.tv_sec + ts.tv_nsec / 1e9;
|
|
#else
|
|
return 1.0 / sysconf(_SC_CLK_TCK);
|
|
#endif
|
|
}
|
|
|
|
ialias (omp_get_wtime)
|
|
ialias (omp_get_wtick)
|