1 files changed, 78 insertions, 0 deletions
diff --git a/libgupc/smp/upc_tick.c b/libgupc/smp/upc_tick.c
new file mode 100644
index 00000000000..f68a77924be
--- /dev/null
+++ b/libgupc/smp/upc_tick.c
@@ -0,0 +1,78 @@
+/* Copyright (C) 2012-2016 Free Software Foundation, Inc.
+   This file is part of the UPC runtime Library.
+   Written by Gary Funck <gary@intrepid.com>
+   and Nenad Vukicevic <nenad@intrepid.com>
+
+This file is part of GCC.
+
+GCC 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.
+
+GCC 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/>.  */
+
+#include "upc_config.h"
+#include "upc_sysdep.h"
+#include "upc_defs.h"
+#include "upc_lib.h"
+
+#if HAVE_CLOCK_GETTIME
+#ifdef CLOCK_MONOTONIC_RAW
+/* System clock id passed to clock_gettime. CLOCK_MONOTONIC_RAW
+   is preferred.  It has been available in the Linux kernel
+   since version 2.6.28 */
+#define SYS_RT_CLOCK_ID CLOCK_MONOTONIC_RAW
+#else
+#define SYS_RT_CLOCK_ID CLOCK_MONOTONIC
+#endif
+
+upc_tick_t
+upc_ticks_now (void)
+{
+  struct timespec ts;
+  upc_tick_t t;
+  if (clock_gettime (SYS_RT_CLOCK_ID, &ts) != 0)
+    {
+      perror ("clock_gettime");
+      abort ();
+    }
+  t = (upc_tick_t) ts.tv_sec * 1000000000LL + (upc_tick_t) ts.tv_nsec;
+  return t;
+}
+
+#else /* !HAVE_CLOCK_GETTIME */
+
+upc_tick_t
+upc_ticks_now (void)
+{
+  struct timeval tv;
+  upc_tick_t t;
+  if (gettimeofday (&tv, NULL) != 0)
+    {
+      perror ("gettimeofday");
+      abort ();
+    }
+  t = (upc_tick_t) tv.tv_sec * 1000000000LL + (upc_tick_t) tv.tv_usec * 1000;
+  return t;
+}
+
+#endif
+
+uint64_t
+upc_ticks_to_ns (upc_tick_t ticks)
+{
+  return ticks;
+}