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comparison usr/src/cmd/cpc/common/time.c @ 0:c9caec207d52 b86

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Initial porting based on b86
author Koji Uno <koji.uno@sun.com>
date Tue, 02 Jun 2009 18:56:50 +0900
parents
children 1a15d5aaf794
comparison
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-1:000000000000 0:c9caec207d52
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 "@(#)time.c 1.3 05/06/08 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
38 static hrtime_t timebase;
39
40 void
41 zerotime(void)
42 {
43 timebase = gethrtime();
44 }
45
46 #define NSECPERSEC 1000000000.0
47
48 float
49 mstimestamp(hrtime_t hrt)
50 {
51 if (hrt == 0)
52 hrt = gethrtime();
53 return ((float)(hrt - timebase) / NSECPERSEC);
54 }