--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/lib/libc/port/gen/clock.c	Tue Jun 14 00:00:00 2005 -0700
@@ -0,0 +1,59 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+#include "synonyms.h"
+#include <sys/types.h>
+#include <sys/times.h>
+#include <time.h>
+#include <sys/param.h>	/* for HZ (clock frequency in Hz) */
+
+#define	TIMES(B)	(B.tms_utime+B.tms_stime+B.tms_cutime+B.tms_cstime)
+
+
+clock_t
+clock(void)
+{
+	struct tms buffer;
+	static int Hz = 0;
+	static clock_t first;
+	extern int gethz(void);		/* XXX should be in a header file! */
+
+	if (times(&buffer) == (clock_t)-1)
+		return ((clock_t)-1);
+	if (Hz == 0) {
+		if ((Hz = gethz()) == 0)
+			Hz = HZ;
+		first = TIMES(buffer);
+	}
+
+	return ((TIMES(buffer) - first) * (CLOCKS_PER_SEC/Hz));
+}