1 /* $OpenBSD: time.c,v 1.25 2017/08/21 13:38:02 schwarze 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 __dead void usage(void); 46 47 int 48 main(int argc, char *argv[]) 49 { 50 struct rusage ru; 51 struct timespec before, after, during; 52 int ch, exitonsig, lflag, portableflag, status; 53 pid_t pid; 54 55 if (pledge("stdio proc exec", NULL) == -1) 56 err(1, "pledge"); 57 58 exitonsig = lflag = portableflag = 0; 59 60 while ((ch = getopt(argc, argv, "lp")) != -1) { 61 switch(ch) { 62 case 'l': 63 lflag = 1; 64 break; 65 case 'p': 66 portableflag = 1; 67 break; 68 default: 69 usage(); 70 } 71 } 72 73 argc -= optind; 74 argv += optind; 75 76 if (argc < 1) 77 usage(); 78 79 clock_gettime(CLOCK_MONOTONIC, &before); 80 switch(pid = vfork()) { 81 case -1: /* error */ 82 warn("fork"); 83 return 1; 84 case 0: /* child */ 85 execvp(*argv, argv); 86 warn("%s", *argv); 87 _exit((errno == ENOENT) ? 127 : 126); 88 } 89 90 /* parent */ 91 signal(SIGINT, SIG_IGN); 92 signal(SIGQUIT, SIG_IGN); 93 while (wait3(&status, 0, &ru) != pid) 94 ; 95 clock_gettime(CLOCK_MONOTONIC, &after); 96 if (WIFSIGNALED(status)) 97 exitonsig = WTERMSIG(status); 98 if (!WIFEXITED(status)) 99 fprintf(stderr, "Command terminated abnormally.\n"); 100 timespecsub(&after, &before, &during); 101 102 if (portableflag) { 103 fprintf(stderr, "real %9lld.%02ld\n", 104 (long long)during.tv_sec, during.tv_nsec/10000000); 105 fprintf(stderr, "user %9lld.%02ld\n", 106 (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 107 fprintf(stderr, "sys %9lld.%02ld\n", 108 (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 109 } else { 110 fprintf(stderr, "%9lld.%02ld real ", 111 (long long)during.tv_sec, during.tv_nsec/10000000); 112 fprintf(stderr, "%9lld.%02ld user ", 113 (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); 114 fprintf(stderr, "%9lld.%02ld sys\n", 115 (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); 116 } 117 118 if (lflag) { 119 int hz; 120 long ticks; 121 int mib[2]; 122 struct clockinfo clkinfo; 123 size_t size; 124 125 mib[0] = CTL_KERN; 126 mib[1] = KERN_CLOCKRATE; 127 size = sizeof(clkinfo); 128 if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0) 129 err(1, "sysctl"); 130 131 hz = clkinfo.hz; 132 133 ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + 134 hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; 135 136 fprintf(stderr, "%10ld %s\n", 137 ru.ru_maxrss, "maximum resident set size"); 138 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0, 139 "average shared memory size"); 140 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0, 141 "average unshared data size"); 142 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0, 143 "average unshared stack size"); 144 fprintf(stderr, "%10ld %s\n", 145 ru.ru_minflt, "minor page faults"); 146 fprintf(stderr, "%10ld %s\n", 147 ru.ru_majflt, "major page faults"); 148 fprintf(stderr, "%10ld %s\n", 149 ru.ru_nswap, "swaps"); 150 fprintf(stderr, "%10ld %s\n", 151 ru.ru_inblock, "block input operations"); 152 fprintf(stderr, "%10ld %s\n", 153 ru.ru_oublock, "block output operations"); 154 fprintf(stderr, "%10ld %s\n", 155 ru.ru_msgsnd, "messages sent"); 156 fprintf(stderr, "%10ld %s\n", 157 ru.ru_msgrcv, "messages received"); 158 fprintf(stderr, "%10ld %s\n", 159 ru.ru_nsignals, "signals received"); 160 fprintf(stderr, "%10ld %s\n", 161 ru.ru_nvcsw, "voluntary context switches"); 162 fprintf(stderr, "%10ld %s\n", 163 ru.ru_nivcsw, "involuntary context switches"); 164 } 165 166 if (exitonsig) { 167 if (signal(exitonsig, SIG_DFL) == SIG_ERR) 168 return 128 + exitonsig; 169 else 170 raise(exitonsig); 171 } 172 return WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE; 173 } 174 175 __dead void 176 usage(void) 177 { 178 fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n", 179 getprogname()); 180 exit(1); 181 } 182