1 /* $OpenBSD: time.c,v 1.21 2015/10/10 14:49:23 deraadt Exp $ */ 2 /* $NetBSD: time.c,v 1.7 1995/06/27 00:34:00 jtc Exp $ */ 3 4 /* 5 * Copyright (c) 1987, 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/time.h> 34 #include <sys/resource.h> 35 #include <sys/wait.h> 36 #include <sys/sysctl.h> 37 38 #include <err.h> 39 #include <errno.h> 40 #include <signal.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <unistd.h> 44 45 int lflag; 46 int portableflag; 47 48 __dead void usage(void); 49 50 int 51 main(int argc, char *argv[]) 52 { 53 pid_t pid; 54 int ch, status; 55 struct timeval before, after; 56 struct rusage ru; 57 int exitonsig = 0; 58 59 if (pledge("stdio proc exec", NULL) == -1) 60 err(1, "pledge"); 61 62 while ((ch = getopt(argc, argv, "lp")) != -1) { 63 switch(ch) { 64 case 'l': 65 lflag = 1; 66 break; 67 case 'p': 68 portableflag = 1; 69 break; 70 default: 71 usage(); 72 /* NOTREACHED */ 73 } 74 } 75 76 argc -= optind; 77 argv += optind; 78 79 if (argc < 1) 80 usage(); 81 82 gettimeofday(&before, (struct timezone *)NULL); 83 switch(pid = vfork()) { 84 case -1: /* error */ 85 perror("time"); 86 exit(1); 87 /* NOTREACHED */ 88 case 0: /* child */ 89 execvp(*argv, argv); 90 perror(*argv); 91 _exit((errno == ENOENT) ? 127 : 126); 92 /* NOTREACHED */ 93 } 94 95 /* parent */ 96 (void)signal(SIGINT, SIG_IGN); 97 (void)signal(SIGQUIT, SIG_IGN); 98 while (wait3(&status, 0, &ru) != pid) 99 ; 100 gettimeofday(&after, (struct timezone *)NULL); 101 if (WIFSIGNALED(status)) 102 exitonsig = WTERMSIG(status); 103 if (!WIFEXITED(status)) 104 fprintf(stderr, "Command terminated abnormally.\n"); 105 timersub(&after, &before, &after); 106 107 if (portableflag) { 108 fprintf(stderr, "real %9lld.%02ld\n", 109 (long long)after.tv_sec, after.tv_usec/10000); 110 fprintf(stderr, "user %9lld.%02ld\n", 111 (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 112 fprintf(stderr, "sys %9lld.%02ld\n", 113 (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 114 } else { 115 116 fprintf(stderr, "%9lld.%02ld real ", 117 (long long)after.tv_sec, after.tv_usec/10000); 118 fprintf(stderr, "%9lld.%02ld user ", 119 (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 120 fprintf(stderr, "%9lld.%02ld sys\n", 121 (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 122 } 123 124 if (lflag) { 125 int hz; 126 long ticks; 127 int mib[2]; 128 struct clockinfo clkinfo; 129 size_t size; 130 131 mib[0] = CTL_KERN; 132 mib[1] = KERN_CLOCKRATE; 133 size = sizeof(clkinfo); 134 if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0) 135 err(1, "sysctl"); 136 137 hz = clkinfo.hz; 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, "minor page faults"); 152 fprintf(stderr, "%10ld %s\n", 153 ru.ru_majflt, "major 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 if (exitonsig) { 173 if (signal(exitonsig, SIG_DFL) == SIG_ERR) 174 perror("signal"); 175 else 176 kill(getpid(), exitonsig); 177 } 178 exit(WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE); 179 } 180 181 __dead void 182 usage(void) 183 { 184 extern char *__progname; 185 186 (void)fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n", 187 __progname); 188 exit(1); 189 } 190