1 files changed, 87 insertions, 0 deletions
diff --git a/libgfortran/intrinsics/dtime.c b/libgfortran/intrinsics/dtime.c
new file mode 100644
index 000000000..e36e1f1d0
--- /dev/null
+++ b/libgfortran/intrinsics/dtime.c
@@ -0,0 +1,87 @@
+/* Implementation of the dtime intrinsic.
+   Copyright (C) 2004, 2005, 2006, 2007, 2009, 2011 Free Software
+   Foundation, Inc.
+
+This file is part of the GNU Fortran runtime library (libgfortran).
+
+Libgfortran 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 of the License, or (at your option) any later version.
+
+Libgfortran 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 "libgfortran.h"
+#include "time_1.h"
+#include <gthr.h>
+
+#ifdef __GTHREAD_MUTEX_INIT
+static __gthread_mutex_t dtime_update_lock = __GTHREAD_MUTEX_INIT;
+#else
+static __gthread_mutex_t dtime_update_lock;
+#endif
+
+extern void dtime_sub (gfc_array_r4 *t, GFC_REAL_4 *result);
+iexport_proto(dtime_sub);
+
+void
+dtime_sub (gfc_array_r4 *t, GFC_REAL_4 *result)
+{
+  GFC_REAL_4 *tp;
+  long user_sec, user_usec, system_sec, system_usec;
+  static long us = 0, uu = 0, ss = 0 , su = 0;
+  GFC_REAL_4 tu, ts, tt;
+
+  if (((GFC_DESCRIPTOR_EXTENT(t,0))) < 2)
+    runtime_error ("Insufficient number of elements in TARRAY.");
+
+  __gthread_mutex_lock (&dtime_update_lock);
+  if (gf_cputime (&user_sec, &user_usec, &system_sec, &system_usec) == 0)
+    {
+      tu = (GFC_REAL_4) ((user_sec - us) + 1.e-6 * (user_usec - uu));
+      ts = (GFC_REAL_4) ((system_sec - ss) + 1.e-6 * (system_usec - su));
+      tt = tu + ts;
+      us = user_sec;
+      uu = user_usec;
+      ss = system_sec;
+      su = system_usec;
+    }
+  else
+    {
+      tu = -1;
+      ts = -1;
+      tt = -1;
+    }
+
+  tp = t->data;
+
+  *tp = tu;
+  tp += GFC_DESCRIPTOR_STRIDE(t,0);
+  *tp = ts;
+  *result = tt;
+  __gthread_mutex_unlock (&dtime_update_lock);
+}
+iexport(dtime_sub);
+
+extern GFC_REAL_4 dtime (gfc_array_r4 *t);
+export_proto(dtime);
+
+GFC_REAL_4
+dtime (gfc_array_r4 *t)
+{
+  GFC_REAL_4 val;
+  dtime_sub (t, &val);
+  return val;
+}