1 /* $NetBSD: times.c,v 1.4 1995/02/27 05:54:09 cgd Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #if defined(LIBC_SCCS) && !defined(lint) 37 #if 0 38 static char sccsid[] = "@(#)times.c 8.1 (Berkeley) 6/4/93"; 39 #else 40 static char rcsid[] = "$NetBSD: times.c,v 1.4 1995/02/27 05:54:09 cgd Exp $"; 41 #endif 42 #endif /* LIBC_SCCS and not lint */ 43 44 #include <sys/param.h> 45 #include <sys/time.h> 46 #include <sys/times.h> 47 #include <sys/resource.h> 48 49 /* 50 * Convert usec to clock ticks; could do (usec * CLK_TCK) / 1000000, 51 * but this would overflow if we switch to nanosec. 52 */ 53 #define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK)) 54 55 clock_t 56 times(tp) 57 register struct tms *tp; 58 { 59 struct rusage ru; 60 struct timeval t; 61 62 if (getrusage(RUSAGE_SELF, &ru) < 0) 63 return ((clock_t)-1); 64 tp->tms_utime = CONVTCK(ru.ru_utime); 65 tp->tms_stime = CONVTCK(ru.ru_stime); 66 if (getrusage(RUSAGE_CHILDREN, &ru) < 0) 67 return ((clock_t)-1); 68 tp->tms_cutime = CONVTCK(ru.ru_utime); 69 tp->tms_cstime = CONVTCK(ru.ru_stime); 70 if (gettimeofday(&t, (struct timezone *)0)) 71 return ((clock_t)-1); 72 return ((clock_t)(CONVTCK(t))); 73 } 74