time.c revision 1.7
1 /* $NetBSD: time.c,v 1.7 1995/06/27 00:34:00 jtc 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 #ifndef lint 37 static char copyright[] = 38 "@(#) 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 static char rcsid[] = "$NetBSD: time.c,v 1.7 1995/06/27 00:34:00 jtc 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 63 main(argc, argv) 64 int argc; 65 char **argv; 66 { 67 extern int optind; 68 register int pid; 69 int ch, status; 70 struct timeval before, after; 71 struct rusage ru; 72 73 lflag = 0; 74 while ((ch = getopt(argc, argv, "lp")) != EOF) 75 switch((char)ch) { 76 case 'p': 77 portableflag = 1; 78 break; 79 case 'l': 80 lflag = 1; 81 break; 82 case '?': 83 default: 84 fprintf(stderr, "usage: time [-lp] command.\n"); 85 exit(1); 86 } 87 88 if (!(argc -= optind)) 89 exit(0); 90 argv += optind; 91 92 gettimeofday(&before, (struct timezone *)NULL); 93 switch(pid = vfork()) { 94 case -1: /* error */ 95 perror("time"); 96 exit(1); 97 /* NOTREACHED */ 98 case 0: /* child */ 99 execvp(*argv, argv); 100 perror(*argv); 101 _exit((errno == ENOENT) ? 127 : 126); 102 /* NOTREACHED */ 103 } 104 105 /* parent */ 106 (void)signal(SIGINT, SIG_IGN); 107 (void)signal(SIGQUIT, SIG_IGN); 108 while (wait3(&status, 0, &ru) != pid); 109 gettimeofday(&after, (struct timezone *)NULL); 110 if (!WIFEXITED(status)) 111 fprintf(stderr, "Command terminated abnormally.\n"); 112 timersub(&after, &before, &after); 113 114 if (portableflag) { 115 fprintf (stderr, "real %9ld.%02ld\n", 116 after.tv_sec, after.tv_usec/10000); 117 fprintf (stderr, "user %9ld.%02ld\n", 118 ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 119 fprintf (stderr, "sys %9ld.%02ld\n", 120 ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 121 } else { 122 123 fprintf(stderr, "%9ld.%02ld real ", 124 after.tv_sec, after.tv_usec/10000); 125 fprintf(stderr, "%9ld.%02ld user ", 126 ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 127 fprintf(stderr, "%9ld.%02ld sys\n", 128 ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 129 } 130 131 if (lflag) { 132 int hz = 100; /* XXX */ 133 long ticks; 134 135 ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + 136 hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; 137 138 fprintf(stderr, "%10ld %s\n", 139 ru.ru_maxrss, "maximum resident set size"); 140 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0, 141 "average shared memory size"); 142 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0, 143 "average unshared data size"); 144 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0, 145 "average unshared stack size"); 146 fprintf(stderr, "%10ld %s\n", 147 ru.ru_minflt, "page reclaims"); 148 fprintf(stderr, "%10ld %s\n", 149 ru.ru_majflt, "page faults"); 150 fprintf(stderr, "%10ld %s\n", 151 ru.ru_nswap, "swaps"); 152 fprintf(stderr, "%10ld %s\n", 153 ru.ru_inblock, "block input operations"); 154 fprintf(stderr, "%10ld %s\n", 155 ru.ru_oublock, "block output operations"); 156 fprintf(stderr, "%10ld %s\n", 157 ru.ru_msgsnd, "messages sent"); 158 fprintf(stderr, "%10ld %s\n", 159 ru.ru_msgrcv, "messages received"); 160 fprintf(stderr, "%10ld %s\n", 161 ru.ru_nsignals, "signals received"); 162 fprintf(stderr, "%10ld %s\n", 163 ru.ru_nvcsw, "voluntary context switches"); 164 fprintf(stderr, "%10ld %s\n", 165 ru.ru_nivcsw, "involuntary context switches"); 166 } 167 168 exit (WEXITSTATUS(status)); 169 } 170
Indexes created Wed Sep 24 02:09:48 GMT 2025