Imported gcc-4.4.3

[msp430-gcc.git] / libgomp / config / posix / time.c

diff --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
new file mode 100644 (file)
index 0000000..eb196f6
--- /dev/null
+++ b/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)