1 /* 2 * Copyright (c) 1987, 1988, 1993 3 * The Regents of the University of California. 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 static char copyright[] = 36 "@(#) Copyright (c) 1987, 1988, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93"; 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/time.h> 46 #include <sys/resource.h> 47 #include <sys/signal.h> 48 #include <stdio.h> 49 50 main(argc, argv) 51 int argc; 52 char **argv; 53 { 54 extern int optind; 55 register int pid; 56 int ch, status, lflag; 57 struct timeval before, after; 58 struct rusage ru; 59 60 lflag = 0; 61 while ((ch = getopt(argc, argv, "l")) != EOF) 62 switch((char)ch) { 63 case 'l': 64 lflag = 1; 65 break; 66 case '?': 67 default: 68 fprintf(stderr, "usage: time [-l] command.\n"); 69 exit(1); 70 } 71 72 if (!(argc -= optind)) 73 exit(0); 74 argv += optind; 75 76 gettimeofday(&before, (struct timezone *)NULL); 77 switch(pid = vfork()) { 78 case -1: /* error */ 79 perror("time"); 80 exit(1); 81 /* NOTREACHED */ 82 case 0: /* child */ 83 execvp(*argv, argv); 84 perror(*argv); 85 _exit(1); 86 /* NOTREACHED */ 87 } 88 /* parent */ 89 (void)signal(SIGINT, SIG_IGN); 90 (void)signal(SIGQUIT, SIG_IGN); 91 while (wait3(&status, 0, &ru) != pid); /* XXX use waitpid */ 92 gettimeofday(&after, (struct timezone *)NULL); 93 if (status&0377) 94 fprintf(stderr, "Command terminated abnormally.\n"); 95 after.tv_sec -= before.tv_sec; 96 after.tv_usec -= before.tv_usec; 97 if (after.tv_usec < 0) 98 after.tv_sec--, after.tv_usec += 1000000; 99 fprintf(stderr, "%9ld.%02ld real ", after.tv_sec, after.tv_usec/10000); 100 fprintf(stderr, "%9ld.%02ld user ", 101 ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 102 fprintf(stderr, "%9ld.%02ld sys\n", 103 ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 104 if (lflag) { 105 int hz = 100; /* XXX */ 106 u_long ticks; 107 108 ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + 109 hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; 110 111 /* 112 * If our round-off on the tick calculation still puts us at 0, 113 * then always assume at least one tick. 114 */ 115 if (ticks == 0) 116 ticks = 1; 117 118 fprintf(stderr, "%10ld %s\n", 119 ru.ru_maxrss, "maximum resident set size"); 120 fprintf(stderr, "%10ld %s\n", 121 ru.ru_ixrss / ticks, "average shared memory size"); 122 fprintf(stderr, "%10ld %s\n", 123 ru.ru_idrss / ticks, "average unshared data size"); 124 fprintf(stderr, "%10ld %s\n", 125 ru.ru_isrss / ticks, "average unshared stack size"); 126 fprintf(stderr, "%10ld %s\n", 127 ru.ru_minflt, "page reclaims"); 128 fprintf(stderr, "%10ld %s\n", 129 ru.ru_majflt, "page faults"); 130 fprintf(stderr, "%10ld %s\n", 131 ru.ru_nswap, "swaps"); 132 fprintf(stderr, "%10ld %s\n", 133 ru.ru_inblock, "block input operations"); 134 fprintf(stderr, "%10ld %s\n", 135 ru.ru_oublock, "block output operations"); 136 fprintf(stderr, "%10ld %s\n", 137 ru.ru_msgsnd, "messages sent"); 138 fprintf(stderr, "%10ld %s\n", 139 ru.ru_msgrcv, "messages received"); 140 fprintf(stderr, "%10ld %s\n", 141 ru.ru_nsignals, "signals received"); 142 fprintf(stderr, "%10ld %s\n", 143 ru.ru_nvcsw, "voluntary context switches"); 144 fprintf(stderr, "%10ld %s\n", 145 ru.ru_nivcsw, "involuntary context switches"); 146 } 147 exit (status>>8); 148 } 149