1 /* $NetBSD: time.c,v 1.11 1999/06/05 19:19:19 kleink 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 1.11 1999/06/05 19:19:19 kleink 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 <errno.h> 54 #include <locale.h> 55 #include <signal.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <unistd.h> 59 60 61 int main __P((int, char **)); 62 static void usage __P((void)); 63 64 int 65 main(argc, argv) 66 int argc; 67 char **argv; 68 { 69 int pid; 70 int ch, status; 71 int lflag, portableflag; 72 const char *decpt; 73 const struct lconv *lconv; 74 struct timeval before, after; 75 struct rusage ru; 76 77 #ifdef __GNUC__ /* XXX: borken gcc */ 78 (void)&argv; 79 #endif 80 81 (void)setlocale(LC_ALL, ""); 82 83 lflag = portableflag = 0; 84 while ((ch = getopt(argc, argv, "lp")) != -1) { 85 switch (ch) { 86 case 'p': 87 portableflag = 1; 88 break; 89 case 'l': 90 lflag = 1; 91 break; 92 case '?': 93 default: 94 usage(); 95 } 96 } 97 argc -= optind; 98 argv += optind; 99 100 if (argc < 1) 101 usage(); 102 103 gettimeofday(&before, (struct timezone *)NULL); 104 switch(pid = vfork()) { 105 case -1: /* error */ 106 perror("vfork"); 107 exit(EXIT_FAILURE); 108 /* NOTREACHED */ 109 case 0: /* child */ 110 /* LINTED will return only on failure */ 111 execvp(*argv, argv); 112 perror(*argv); 113 _exit((errno == ENOENT) ? 127 : 126); 114 /* NOTREACHED */ 115 } 116 117 /* parent */ 118 (void)signal(SIGINT, SIG_IGN); 119 (void)signal(SIGQUIT, SIG_IGN); 120 while (wait3(&status, 0, &ru) != pid); 121 gettimeofday(&after, (struct timezone *)NULL); 122 if (!WIFEXITED(status)) 123 fprintf(stderr, "Command terminated abnormally.\n"); 124 timersub(&after, &before, &after); 125 126 if ((lconv = localeconv()) == NULL || 127 (decpt = lconv->decimal_point) == NULL) 128 decpt = "."; 129 130 if (portableflag) { 131 fprintf (stderr, "real %9ld%s%02ld\n", 132 (long)after.tv_sec, decpt, (long)after.tv_usec/10000); 133 fprintf (stderr, "user %9ld%s%02ld\n", 134 (long)ru.ru_utime.tv_sec, decpt, (long)ru.ru_utime.tv_usec/10000); 135 fprintf (stderr, "sys %9ld%s%02ld\n", 136 (long)ru.ru_stime.tv_sec, decpt, (long)ru.ru_stime.tv_usec/10000); 137 } else { 138 139 fprintf(stderr, "%9ld%s%02ld real ", 140 (long)after.tv_sec, decpt, (long)after.tv_usec/10000); 141 fprintf(stderr, "%9ld%s%02ld user ", 142 (long)ru.ru_utime.tv_sec, decpt, (long)ru.ru_utime.tv_usec/10000); 143 fprintf(stderr, "%9ld%s%02ld sys\n", 144 (long)ru.ru_stime.tv_sec, decpt, (long)ru.ru_stime.tv_usec/10000); 145 } 146 147 if (lflag) { 148 int hz = (int)sysconf(_SC_CLK_TCK); 149 long ticks; 150 151 ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + 152 hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; 153 154 fprintf(stderr, "%10ld %s\n", 155 ru.ru_maxrss, "maximum resident set size"); 156 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0, 157 "average shared memory size"); 158 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0, 159 "average unshared data size"); 160 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0, 161 "average unshared stack size"); 162 fprintf(stderr, "%10ld %s\n", 163 ru.ru_minflt, "page reclaims"); 164 fprintf(stderr, "%10ld %s\n", 165 ru.ru_majflt, "page faults"); 166 fprintf(stderr, "%10ld %s\n", 167 ru.ru_nswap, "swaps"); 168 fprintf(stderr, "%10ld %s\n", 169 ru.ru_inblock, "block input operations"); 170 fprintf(stderr, "%10ld %s\n", 171 ru.ru_oublock, "block output operations"); 172 fprintf(stderr, "%10ld %s\n", 173 ru.ru_msgsnd, "messages sent"); 174 fprintf(stderr, "%10ld %s\n", 175 ru.ru_msgrcv, "messages received"); 176 fprintf(stderr, "%10ld %s\n", 177 ru.ru_nsignals, "signals received"); 178 fprintf(stderr, "%10ld %s\n", 179 ru.ru_nvcsw, "voluntary context switches"); 180 fprintf(stderr, "%10ld %s\n", 181 ru.ru_nivcsw, "involuntary context switches"); 182 } 183 184 exit(WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE); 185 /* NOTREACHED */ 186 } 187 188 static void 189 usage() 190 { 191 192 fprintf(stderr, "usage: time [-lp] utility [argument ...]\n"); 193 exit(EXIT_FAILURE); 194 } 195