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 #include <sys/types.h> 28 #include <sys/time.h> 29 #include <stdlib.h> 30 #include <stdio.h> 31 #include <unistd.h> 32 #include <libcpc.h> 33 34 #include "cpucmds.h" 35 36 static hrtime_t timebase; 37 38 void 39 zerotime(void) 40 { 41 timebase = gethrtime(); 42 } 43 44 #define NSECPERSEC 1000000000.0 45 46 float 47 mstimestamp(hrtime_t hrt) 48 { 49 if (hrt == 0) 50 hrt = gethrtime(); 51 return ((float)(hrt - timebase) / NSECPERSEC); 52 } 53