time.c revision 1.9
1 /* $NetBSD: time.c,v 1.9 1997/10/20 03:28:21 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1987, 1988, 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 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1987, 1988, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93"; 45 #endif 46 __RCSID("$NetBSD: time.c,v 1.9 1997/10/20 03:28:21 lukem Exp $"); 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 #include <sys/time.h> 51 #include <sys/resource.h> 52 #include <sys/wait.h> 53 #include <signal.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <unistd.h> 57 #include <errno.h> 58 59 int lflag; 60 int portableflag; 61 62 int main __P((int, char **)); 63 64 int 65 main(argc, argv) 66 int argc; 67 char **argv; 68 { 69 int pid; 70 int ch, status; 71 struct timeval before, after; 72 struct rusage ru; 73 74 #ifdef __GNUC__ /* XXX: borken gcc */ 75 (void)&argv; 76 #endif 77 lflag = 0; 78 while ((ch = getopt(argc, argv, "lp")) != -1) 79 switch((char)ch) { 80 case 'p': 81 portableflag = 1; 82 break; 83 case 'l': 84 lflag = 1; 85 break; 86 case '?': 87 default: 88 fprintf(stderr, "usage: time [-lp] command.\n"); 89 exit(1); 90 } 91 92 if (!(argc -= optind)) 93 exit(0); 94 argv += optind; 95 96 gettimeofday(&before, (struct timezone *)NULL); 97 switch(pid = vfork()) { 98 case -1: /* error */ 99 perror("time"); 100 exit(1); 101 /* NOTREACHED */ 102 case 0: /* child */ 103 execvp(*argv, argv); 104 perror(*argv); 105 _exit((errno == ENOENT) ? 127 : 126); 106 /* NOTREACHED */ 107 } 108 109 /* parent */ 110 (void)signal(SIGINT, SIG_IGN); 111 (void)signal(SIGQUIT, SIG_IGN); 112 while (wait3(&status, 0, &ru) != pid); 113 gettimeofday(&after, (struct timezone *)NULL); 114 if (!WIFEXITED(status)) 115 fprintf(stderr, "Command terminated abnormally.\n"); 116 timersub(&after, &before, &after); 117 118 if (portableflag) { 119 fprintf (stderr, "real %9ld.%02ld\n", 120 after.tv_sec, after.tv_usec/10000); 121 fprintf (stderr, "user %9ld.%02ld\n", 122 ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 123 fprintf (stderr, "sys %9ld.%02ld\n", 124 ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 125 } else { 126 127 fprintf(stderr, "%9ld.%02ld real ", 128 after.tv_sec, after.tv_usec/10000); 129 fprintf(stderr, "%9ld.%02ld user ", 130 ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 131 fprintf(stderr, "%9ld.%02ld sys\n", 132 ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 133 } 134 135 if (lflag) { 136 int hz = 100; /* XXX */ 137 long ticks; 138 139 ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + 140 hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; 141 142 fprintf(stderr, "%10ld %s\n", 143 ru.ru_maxrss, "maximum resident set size"); 144 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0, 145 "average shared memory size"); 146 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0, 147 "average unshared data size"); 148 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0, 149 "average unshared stack size"); 150 fprintf(stderr, "%10ld %s\n", 151 ru.ru_minflt, "page reclaims"); 152 fprintf(stderr, "%10ld %s\n", 153 ru.ru_majflt, "page faults"); 154 fprintf(stderr, "%10ld %s\n", 155 ru.ru_nswap, "swaps"); 156 fprintf(stderr, "%10ld %s\n", 157 ru.ru_inblock, "block input operations"); 158 fprintf(stderr, "%10ld %s\n", 159 ru.ru_oublock, "block output operations"); 160 fprintf(stderr, "%10ld %s\n", 161 ru.ru_msgsnd, "messages sent"); 162 fprintf(stderr, "%10ld %s\n", 163 ru.ru_msgrcv, "messages received"); 164 fprintf(stderr, "%10ld %s\n", 165 ru.ru_nsignals, "signals received"); 166 fprintf(stderr, "%10ld %s\n", 167 ru.ru_nvcsw, "voluntary context switches"); 168 fprintf(stderr, "%10ld %s\n", 169 ru.ru_nivcsw, "involuntary context switches"); 170 } 171 172 exit (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE); 173 } 174
Indexes created Thu Sep 25 08:09:54 GMT 2025