1/* $OpenBSD: time.c,v 1.26 2023/10/15 18:20:25 cheloha 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 47int 48main(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 argc -= optind; 73 argv += optind; 74 75 if (argc < 1) 76 usage(); 77 78 clock_gettime(CLOCK_MONOTONIC, &before); 79 switch (pid = vfork()) { 80 case -1: /* error */ 81 warn("fork"); 82 return 1; 83 case 0: /* child */ 84 execvp(*argv, argv); 85 warn("%s", *argv); 86 _exit(errno == ENOENT ? 127 : 126); 87 } 88 89 /* parent */ 90 signal(SIGINT, SIG_IGN); 91 signal(SIGQUIT, SIG_IGN); 92 while (wait3(&status, 0, &ru) != pid) 93 continue; 94 clock_gettime(CLOCK_MONOTONIC, &after); 95 if (WIFSIGNALED(status)) 96 exitonsig = WTERMSIG(status); 97 if (!WIFEXITED(status)) 98 fprintf(stderr, "Command terminated abnormally.\n"); 99 timespecsub(&after, &before, &during); 100 101 if (portableflag) { 102 fprintf(stderr, "real %9lld.%02ld\n", 103 (long long)during.tv_sec, during.tv_nsec / 10000000); 104 fprintf(stderr, "user %9lld.%02ld\n", 105 (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec / 10000); 106 fprintf(stderr, "sys %9lld.%02ld\n", 107 (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec / 10000); 108 } else { 109 fprintf(stderr, "%9lld.%02ld real ", 110 (long long)during.tv_sec, during.tv_nsec / 10000000); 111 fprintf(stderr, "%9lld.%02ld user ", 112 (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec / 10000); 113 fprintf(stderr, "%9lld.%02ld sys\n", 114 (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec / 10000); 115 } 116 117 if (lflag) { 118 int hz; 119 long ticks; 120 int mib[2]; 121 struct clockinfo clkinfo; 122 size_t size; 123 124 mib[0] = CTL_KERN; 125 mib[1] = KERN_CLOCKRATE; 126 size = sizeof(clkinfo); 127 if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0) 128 err(1, "sysctl"); 129 130 hz = clkinfo.hz; 131 ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + 132 hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; 133 134 fprintf(stderr, "%10ld %s\n", 135 ru.ru_maxrss, "maximum resident set size"); 136 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0, 137 "average shared memory size"); 138 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0, 139 "average unshared data size"); 140 fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0, 141 "average unshared stack size"); 142 fprintf(stderr, "%10ld %s\n", 143 ru.ru_minflt, "minor page faults"); 144 fprintf(stderr, "%10ld %s\n", 145 ru.ru_majflt, "major page faults"); 146 fprintf(stderr, "%10ld %s\n", 147 ru.ru_nswap, "swaps"); 148 fprintf(stderr, "%10ld %s\n", 149 ru.ru_inblock, "block input operations"); 150 fprintf(stderr, "%10ld %s\n", 151 ru.ru_oublock, "block output operations"); 152 fprintf(stderr, "%10ld %s\n", 153 ru.ru_msgsnd, "messages sent"); 154 fprintf(stderr, "%10ld %s\n", 155 ru.ru_msgrcv, "messages received"); 156 fprintf(stderr, "%10ld %s\n", 157 ru.ru_nsignals, "signals received"); 158 fprintf(stderr, "%10ld %s\n", 159 ru.ru_nvcsw, "voluntary context switches"); 160 fprintf(stderr, "%10ld %s\n", 161 ru.ru_nivcsw, "involuntary context switches"); 162 } 163 164 if (exitonsig) { 165 if (signal(exitonsig, SIG_DFL) == SIG_ERR) 166 return 128 + exitonsig; 167 else 168 raise(exitonsig); 169 } 170 return WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE; 171} 172 173__dead void 174usage(void) 175{ 176 fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n", 177 getprogname()); 178 exit(1); 179} 180