initial import

sysdeps/unix/bsd/clock.c

@@ -0,0 +1,45 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <sys/resource.h>
+#include <time.h>
+#include <sys/time.h>
+
+#ifdef	__GNUC__
+__inline
+#endif
+static clock_t
+DEFUN(timeval_to_clock_t, (tv), CONST struct timeval *tv)
+{
+  return (clock_t) ((tv->tv_sec * CLK_TCK) +
+		    (tv->tv_usec * CLK_TCK / 1000));
+}
+
+/* Return the time used by the program so far (user time + system time).  */
+clock_t
+DEFUN_VOID(clock)
+{
+  struct rusage usage;
+
+  if (__getrusage(RUSAGE_SELF, &usage) < 0)
+    return (clock_t) -1;
+
+  return (timeval_to_clock_t(&usage.ru_stime) +
+	  timeval_to_clock_t(&usage.ru_utime)) * CLOCKS_PER_SEC;
+}