1 /* 2 * Copyright (c) 1987, 1988 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 char copyright[] = 36 "@(#) Copyright (c) 1987, 1988 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 /*static char sccsid[] = "from: @(#)time.c 4.9 (Berkeley) 6/1/90";*/ 42 static char rcsid[] = "$Id: time.c,v 1.2 1993/08/01 18:07:01 mycroft Exp $"; 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 #include <sys/time.h> 47 #include <sys/resource.h> 48 #include <sys/signal.h> 49 #include <stdio.h> 50 51 main(argc, argv) 52 int argc; 53 char **argv; 54 { 55 extern int optind; 56 register int pid; 57 int ch, status, lflag; 58 struct timeval before, after; 59 struct rusage ru; 60 61 lflag = 0; 62 while ((ch = getopt(argc, argv, "l")) != EOF) 63 switch((char)ch) { 64 case 'l': 65 lflag = 1; 66 break; 67 case '?': 68 default: 69 fprintf(stderr, "usage: time [-l] command.\n"); 70 exit(1); 71 } 72 73 if (!(argc -= optind)) 74 exit(0); 75 argv += optind; 76 77 gettimeofday(&before, (struct timezone *)NULL); 78 switch(pid = vfork()) { 79 case -1: /* error */ 80 perror("time"); 81 exit(1); 82 /* NOTREACHED */ 83 case 0: /* child */ 84 execvp(*argv, argv); 85 perror(*argv); 86 _exit(1); 87 /* NOTREACHED */ 88 } 89 /* parent */ 90 (void)signal(SIGINT, SIG_IGN); 91 (void)signal(SIGQUIT, SIG_IGN); 92 while (wait3(&status, 0, &ru) != pid); /* XXX use waitpid */ 93 gettimeofday(&after, (struct timezone *)NULL); 94 if (status&0377) 95 fprintf(stderr, "Command terminated abnormally.\n"); 96 after.tv_sec -= before.tv_sec; 97 after.tv_usec -= before.tv_usec; 98 if (after.tv_usec < 0) 99 after.tv_sec--, after.tv_usec += 1000000; 100 fprintf(stderr, "%9ld.%02ld real ", after.tv_sec, after.tv_usec/10000); 101 fprintf(stderr, "%9ld.%02ld user ", 102 ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 103 fprintf(stderr, "%9ld.%02ld sys\n", 104 ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 105 if (lflag) { 106 int hz = 100; /* XXX */ 107 long ticks; 108 109 ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + 110 hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; 111 fprintf(stderr, "%10ld %s\n", 112 ru.ru_maxrss, "maximum resident set size"); 113 fprintf(stderr, "%10ld %s\n", 114 ru.ru_ixrss / ticks, "average shared memory size"); 115 fprintf(stderr, "%10ld %s\n", 116 ru.ru_idrss / ticks, "average unshared data size"); 117 fprintf(stderr, "%10ld %s\n", 118 ru.ru_isrss / ticks, "average unshared stack size"); 119 fprintf(stderr, "%10ld %s\n", 120 ru.ru_minflt, "page reclaims"); 121 fprintf(stderr, "%10ld %s\n", 122 ru.ru_majflt, "page faults"); 123 fprintf(stderr, "%10ld %s\n", 124 ru.ru_nswap, "swaps"); 125 fprintf(stderr, "%10ld %s\n", 126 ru.ru_inblock, "block input operations"); 127 fprintf(stderr, "%10ld %s\n", 128 ru.ru_oublock, "block output operations"); 129 fprintf(stderr, "%10ld %s\n", 130 ru.ru_msgsnd, "messages sent"); 131 fprintf(stderr, "%10ld %s\n", 132 ru.ru_msgrcv, "messages received"); 133 fprintf(stderr, "%10ld %s\n", 134 ru.ru_nsignals, "signals received"); 135 fprintf(stderr, "%10ld %s\n", 136 ru.ru_nvcsw, "voluntary context switches"); 137 fprintf(stderr, "%10ld %s\n", 138 ru.ru_nivcsw, "involuntary context switches"); 139 } 140 exit (status>>8); 141 } 142