10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*6812Sraf * Common Development and Distribution License (the "License"). 6*6812Sraf * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 21*6812Sraf 220Sstevel@tonic-gate /* 23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 240Sstevel@tonic-gate * Use is subject to license terms. 250Sstevel@tonic-gate */ 260Sstevel@tonic-gate 270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 280Sstevel@tonic-gate /* All Rights Reserved */ 290Sstevel@tonic-gate 30*6812Sraf #pragma ident "%Z%%M% %I% %E% SMI" 310Sstevel@tonic-gate 32*6812Sraf #include "lint.h" 330Sstevel@tonic-gate #include <sys/types.h> 340Sstevel@tonic-gate #include <sys/times.h> 350Sstevel@tonic-gate #include <time.h> 360Sstevel@tonic-gate #include <sys/param.h> /* for HZ (clock frequency in Hz) */ 370Sstevel@tonic-gate 380Sstevel@tonic-gate #define TIMES(B) (B.tms_utime+B.tms_stime+B.tms_cutime+B.tms_cstime) 390Sstevel@tonic-gate 400Sstevel@tonic-gate 410Sstevel@tonic-gate clock_t clock(void)420Sstevel@tonic-gateclock(void) 430Sstevel@tonic-gate { 440Sstevel@tonic-gate struct tms buffer; 450Sstevel@tonic-gate static int Hz = 0; 460Sstevel@tonic-gate static clock_t first; 470Sstevel@tonic-gate extern int gethz(void); /* XXX should be in a header file! */ 480Sstevel@tonic-gate 490Sstevel@tonic-gate if (times(&buffer) == (clock_t)-1) 500Sstevel@tonic-gate return ((clock_t)-1); 510Sstevel@tonic-gate if (Hz == 0) { 520Sstevel@tonic-gate if ((Hz = gethz()) == 0) 530Sstevel@tonic-gate Hz = HZ; 540Sstevel@tonic-gate first = TIMES(buffer); 550Sstevel@tonic-gate } 560Sstevel@tonic-gate 570Sstevel@tonic-gate return ((TIMES(buffer) - first) * (CLOCKS_PER_SEC/Hz)); 580Sstevel@tonic-gate } 59