1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/types.h>
30#include <sys/time.h>
31#include <stdlib.h>
32#include <stdio.h>
33#include <unistd.h>
34#include <libcpc.h>
35
36#include "cpucmds.h"
37
38static hrtime_t timebase;
39
40void
41zerotime(void)
42{
43	timebase = gethrtime();
44}
45
46#define	NSECPERSEC	1000000000.0
47
48float
49mstimestamp(hrtime_t hrt)
50{
51	if (hrt == 0)
52		hrt = gethrtime();
53	return ((float)(hrt - timebase) / NSECPERSEC);
54}
55