17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7257d1b4Sraf * Common Development and Distribution License (the "License"). 6*7257d1b4Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21*7257d1b4Sraf 227c478bd9Sstevel@tonic-gate /* 23*7257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 287c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 297c478bd9Sstevel@tonic-gate 30*7257d1b4Sraf #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 32*7257d1b4Sraf #include "lint.h" 337c478bd9Sstevel@tonic-gate #include <sys/types.h> 347c478bd9Sstevel@tonic-gate #include <sys/times.h> 357c478bd9Sstevel@tonic-gate #include <time.h> 367c478bd9Sstevel@tonic-gate #include <sys/param.h> /* for HZ (clock frequency in Hz) */ 377c478bd9Sstevel@tonic-gate 387c478bd9Sstevel@tonic-gate #define TIMES(B) (B.tms_utime+B.tms_stime+B.tms_cutime+B.tms_cstime) 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate clock_t clock(void)427c478bd9Sstevel@tonic-gateclock(void) 437c478bd9Sstevel@tonic-gate { 447c478bd9Sstevel@tonic-gate struct tms buffer; 457c478bd9Sstevel@tonic-gate static int Hz = 0; 467c478bd9Sstevel@tonic-gate static clock_t first; 477c478bd9Sstevel@tonic-gate extern int gethz(void); /* XXX should be in a header file! */ 487c478bd9Sstevel@tonic-gate 497c478bd9Sstevel@tonic-gate if (times(&buffer) == (clock_t)-1) 507c478bd9Sstevel@tonic-gate return ((clock_t)-1); 517c478bd9Sstevel@tonic-gate if (Hz == 0) { 527c478bd9Sstevel@tonic-gate if ((Hz = gethz()) == 0) 537c478bd9Sstevel@tonic-gate Hz = HZ; 547c478bd9Sstevel@tonic-gate first = TIMES(buffer); 557c478bd9Sstevel@tonic-gate } 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate return ((TIMES(buffer) - first) * (CLOCKS_PER_SEC/Hz)); 587c478bd9Sstevel@tonic-gate } 59