aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.4.3/libgomp/config/posix/time.c
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.4.3/libgomp/config/posix/time.c')
-rw-r--r--gcc-4.4.3/libgomp/config/posix/time.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/gcc-4.4.3/libgomp/config/posix/time.c b/gcc-4.4.3/libgomp/config/posix/time.c
new file mode 100644
index 000000000..eb196f648
--- /dev/null
+++ b/gcc-4.4.3/libgomp/config/posix/time.c
@@ -0,0 +1,78 @@
+/* Copyright (C) 2005, 2009 Free Software Foundation, Inc.
+ Contributed by Richard Henderson <rth@redhat.com>.
+
+ This file is part of the GNU OpenMP 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)