11590Srgrimes/* 21590Srgrimes * Copyright (c) 1987, 1988, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 4. Neither the name of the University nor the names of its contributors 141590Srgrimes * may be used to endorse or promote products derived from this software 151590Srgrimes * without specific prior written permission. 161590Srgrimes * 171590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271590Srgrimes * SUCH DAMAGE. 281590Srgrimes */ 291590Srgrimes 301590Srgrimes#ifndef lint 3128203Scharnierstatic const char copyright[] = 321590Srgrimes"@(#) Copyright (c) 1987, 1988, 1993\n\ 331590Srgrimes The Regents of the University of California. All rights reserved.\n"; 341590Srgrimes#endif /* not lint */ 351590Srgrimes 361590Srgrimes#ifndef lint 3728203Scharnier#if 0 381590Srgrimesstatic char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93"; 3928203Scharnier#endif 4028203Scharnierstatic const char rcsid[] = 4150477Speter "$FreeBSD$"; 421590Srgrimes#endif /* not lint */ 431590Srgrimes 441590Srgrimes#include <sys/types.h> 451590Srgrimes#include <sys/resource.h> 461590Srgrimes#include <sys/signal.h> 4717351Sjdp#include <sys/sysctl.h> 48120747Syar#include <sys/time.h> 4918889Sjkh#include <sys/wait.h> 5017351Sjdp 5117351Sjdp#include <err.h> 5244640Sroberto#include <errno.h> 5372338Sache#include <locale.h> 54120747Syar#include <signal.h> 55120747Syar#include <stdio.h> 56120747Syar#include <stdlib.h> 57169346Sdwmalone#include <stdint.h> 58200462Sdelphij#include <string.h> 5928203Scharnier#include <unistd.h> 601590Srgrimes 6192922Simpstatic int getstathz(void); 6292922Simpstatic void humantime(FILE *, long, long); 63158560Spjdstatic void showtime(FILE *, struct timeval *, struct timeval *, 64158560Spjd struct rusage *); 65158560Spjdstatic void siginfo(int); 6692922Simpstatic void usage(void); 6717351Sjdp 6872338Sachestatic char decimal_point; 69169346Sdwmalonestatic struct timeval before_tv; 70158560Spjdstatic int hflag, pflag; 7172338Sache 7228203Scharnierint 73102944Sdwmalonemain(int argc, char **argv) 741590Srgrimes{ 75158560Spjd int aflag, ch, lflag, status; 76120747Syar int exitonsig; 77120747Syar pid_t pid; 78120744Syar struct rlimit rl; 791590Srgrimes struct rusage ru; 80158560Spjd struct timeval after; 81120747Syar char *ofn = NULL; 8237888Sdes FILE *out = stderr; 831590Srgrimes 8472338Sache (void) setlocale(LC_NUMERIC, ""); 8572338Sache decimal_point = localeconv()->decimal_point[0]; 8672338Sache 8767813Sobrien aflag = hflag = lflag = pflag = 0; 8867813Sobrien while ((ch = getopt(argc, argv, "ahlo:p")) != -1) 891590Srgrimes switch((char)ch) { 9037855Sphk case 'a': 9137888Sdes aflag = 1; 9237855Sphk break; 9367813Sobrien case 'h': 9467813Sobrien hflag = 1; 9567813Sobrien break; 9637913Sdes case 'l': 9737913Sdes lflag = 1; 9837913Sdes break; 9937888Sdes case 'o': 10037888Sdes ofn = optarg; 10137855Sphk break; 10244640Sroberto case 'p': 10344640Sroberto pflag = 1; 10444640Sroberto break; 1051590Srgrimes case '?': 1061590Srgrimes default: 10728203Scharnier usage(); 1081590Srgrimes } 1091590Srgrimes 1101590Srgrimes if (!(argc -= optind)) 1111590Srgrimes exit(0); 1121590Srgrimes argv += optind; 1131590Srgrimes 11437888Sdes if (ofn) { 11537913Sdes if ((out = fopen(ofn, aflag ? "a" : "w")) == NULL) 11637913Sdes err(1, "%s", ofn); 11737913Sdes setvbuf(out, (char *)NULL, _IONBF, (size_t)0); 11837888Sdes } 11937855Sphk 120169346Sdwmalone gettimeofday(&before_tv, (struct timezone *)NULL); 12140301Sdes switch(pid = fork()) { 1221590Srgrimes case -1: /* error */ 12328203Scharnier err(1, "time"); 1241590Srgrimes /* NOTREACHED */ 1251590Srgrimes case 0: /* child */ 126157796Smaxim if (ofn) 127157796Smaxim fclose(out); 1281590Srgrimes execvp(*argv, argv); 12997268Stjr err(errno == ENOENT ? 127 : 126, "%s", *argv); 1301590Srgrimes /* NOTREACHED */ 1311590Srgrimes } 1321590Srgrimes /* parent */ 1331590Srgrimes (void)signal(SIGINT, SIG_IGN); 1341590Srgrimes (void)signal(SIGQUIT, SIG_IGN); 135158560Spjd (void)signal(SIGINFO, siginfo); 136121153Sseanc while (wait4(pid, &status, 0, &ru) != pid); 1371590Srgrimes gettimeofday(&after, (struct timezone *)NULL); 13838520Scracauer if ( ! WIFEXITED(status)) 13928203Scharnier warnx("command terminated abnormally"); 140120747Syar exitonsig = WIFSIGNALED(status) ? WTERMSIG(status) : 0; 141169346Sdwmalone showtime(out, &before_tv, &after, &ru); 1421590Srgrimes if (lflag) { 14317351Sjdp int hz = getstathz(); 14411873Spst u_long ticks; 1451590Srgrimes 1461590Srgrimes ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + 1471590Srgrimes hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; 14811873Spst 14911873Spst /* 15011873Spst * If our round-off on the tick calculation still puts us at 0, 15111873Spst * then always assume at least one tick. 15211873Spst */ 15311873Spst if (ticks == 0) 15411873Spst ticks = 1; 15511873Spst 15637855Sphk fprintf(out, "%10ld %s\n", 1571590Srgrimes ru.ru_maxrss, "maximum resident set size"); 15837855Sphk fprintf(out, "%10ld %s\n", 1591590Srgrimes ru.ru_ixrss / ticks, "average shared memory size"); 16037855Sphk fprintf(out, "%10ld %s\n", 1611590Srgrimes ru.ru_idrss / ticks, "average unshared data size"); 16237855Sphk fprintf(out, "%10ld %s\n", 1631590Srgrimes ru.ru_isrss / ticks, "average unshared stack size"); 16437855Sphk fprintf(out, "%10ld %s\n", 1651590Srgrimes ru.ru_minflt, "page reclaims"); 16637855Sphk fprintf(out, "%10ld %s\n", 1671590Srgrimes ru.ru_majflt, "page faults"); 16837855Sphk fprintf(out, "%10ld %s\n", 1691590Srgrimes ru.ru_nswap, "swaps"); 17037855Sphk fprintf(out, "%10ld %s\n", 1711590Srgrimes ru.ru_inblock, "block input operations"); 17237855Sphk fprintf(out, "%10ld %s\n", 1731590Srgrimes ru.ru_oublock, "block output operations"); 17437855Sphk fprintf(out, "%10ld %s\n", 1751590Srgrimes ru.ru_msgsnd, "messages sent"); 17637855Sphk fprintf(out, "%10ld %s\n", 1771590Srgrimes ru.ru_msgrcv, "messages received"); 17837855Sphk fprintf(out, "%10ld %s\n", 1791590Srgrimes ru.ru_nsignals, "signals received"); 18037855Sphk fprintf(out, "%10ld %s\n", 1811590Srgrimes ru.ru_nvcsw, "voluntary context switches"); 18237855Sphk fprintf(out, "%10ld %s\n", 1831590Srgrimes ru.ru_nivcsw, "involuntary context switches"); 1841590Srgrimes } 185120747Syar /* 186120747Syar * If the child has exited on a signal, exit on the same 187120747Syar * signal, too, in order to reproduce the child's exit status. 188120747Syar * However, avoid actually dumping core from the current process. 189120747Syar */ 19038520Scracauer if (exitonsig) { 19187300Sdwmalone if (signal(exitonsig, SIG_DFL) == SIG_ERR) 192120747Syar warn("signal"); 193120744Syar else { 194120744Syar rl.rlim_max = rl.rlim_cur = 0; 195120744Syar if (setrlimit(RLIMIT_CORE, &rl) == -1) 196120744Syar warn("setrlimit"); 19738520Scracauer kill(getpid(), exitonsig); 198120744Syar } 19938520Scracauer } 20018889Sjkh exit (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE); 2011590Srgrimes} 20217351Sjdp 20328203Scharnierstatic void 204102944Sdwmaloneusage(void) 20528203Scharnier{ 20698476Stjr fprintf(stderr, 207146466Sru "usage: time [-al] [-h | -p] [-o file] utility [argument ...]\n"); 20837913Sdes exit(1); 20928203Scharnier} 21028203Scharnier 21117351Sjdp/* 21217351Sjdp * Return the frequency of the kernel's statistics clock. 21317351Sjdp */ 21417351Sjdpstatic int 215102944Sdwmalonegetstathz(void) 21617351Sjdp{ 21717351Sjdp int mib[2]; 21817351Sjdp size_t size; 219120747Syar struct clockinfo clockrate; 22017351Sjdp 22117351Sjdp mib[0] = CTL_KERN; 22217351Sjdp mib[1] = KERN_CLOCKRATE; 22317351Sjdp size = sizeof clockrate; 22417351Sjdp if (sysctl(mib, 2, &clockrate, &size, NULL, 0) == -1) 22517351Sjdp err(1, "sysctl kern.clockrate"); 22617351Sjdp return clockrate.stathz; 22717351Sjdp} 22867813Sobrien 22967813Sobrienstatic void 230102944Sdwmalonehumantime(FILE *out, long sec, long usec) 23167813Sobrien{ 23267813Sobrien long days, hrs, mins; 23367813Sobrien 23467813Sobrien days = sec / (60L * 60 * 24); 23567813Sobrien sec %= (60L * 60 * 24); 23667813Sobrien hrs = sec / (60L * 60); 23767813Sobrien sec %= (60L * 60); 23867813Sobrien mins = sec / 60; 23967813Sobrien sec %= 60; 24067813Sobrien 24167813Sobrien fprintf(out, "\t"); 24267813Sobrien if (days) 24367813Sobrien fprintf(out, "%ldd", days); 24467813Sobrien if (hrs) 24567813Sobrien fprintf(out, "%ldh", hrs); 24667813Sobrien if (mins) 24767813Sobrien fprintf(out, "%ldm", mins); 24872338Sache fprintf(out, "%ld%c%02lds", sec, decimal_point, usec); 24967813Sobrien} 250158560Spjd 251158560Spjdstatic void 252158560Spjdshowtime(FILE *out, struct timeval *before, struct timeval *after, 253158560Spjd struct rusage *ru) 254158560Spjd{ 255158560Spjd 256158560Spjd after->tv_sec -= before->tv_sec; 257158560Spjd after->tv_usec -= before->tv_usec; 258158560Spjd if (after->tv_usec < 0) 259158560Spjd after->tv_sec--, after->tv_usec += 1000000; 260158560Spjd 261158560Spjd if (pflag) { 262158560Spjd /* POSIX wants output that must look like 263158560Spjd "real %f\nuser %f\nsys %f\n" and requires 264158560Spjd at least two digits after the radix. */ 265169346Sdwmalone fprintf(out, "real %jd%c%02ld\n", 266169346Sdwmalone (intmax_t)after->tv_sec, decimal_point, 267158560Spjd after->tv_usec/10000); 268169346Sdwmalone fprintf(out, "user %jd%c%02ld\n", 269169346Sdwmalone (intmax_t)ru->ru_utime.tv_sec, decimal_point, 270158560Spjd ru->ru_utime.tv_usec/10000); 271169346Sdwmalone fprintf(out, "sys %jd%c%02ld\n", 272169346Sdwmalone (intmax_t)ru->ru_stime.tv_sec, decimal_point, 273158560Spjd ru->ru_stime.tv_usec/10000); 274158560Spjd } else if (hflag) { 275158560Spjd humantime(out, after->tv_sec, after->tv_usec/10000); 276158560Spjd fprintf(out, " real\t"); 277158560Spjd humantime(out, ru->ru_utime.tv_sec, ru->ru_utime.tv_usec/10000); 278158560Spjd fprintf(out, " user\t"); 279158560Spjd humantime(out, ru->ru_stime.tv_sec, ru->ru_stime.tv_usec/10000); 280158560Spjd fprintf(out, " sys\n"); 281158560Spjd } else { 282169346Sdwmalone fprintf(out, "%9jd%c%02ld real ", 283169346Sdwmalone (intmax_t)after->tv_sec, decimal_point, 284158560Spjd after->tv_usec/10000); 285169346Sdwmalone fprintf(out, "%9jd%c%02ld user ", 286169346Sdwmalone (intmax_t)ru->ru_utime.tv_sec, decimal_point, 287158560Spjd ru->ru_utime.tv_usec/10000); 288169346Sdwmalone fprintf(out, "%9jd%c%02ld sys\n", 289169346Sdwmalone (intmax_t)ru->ru_stime.tv_sec, decimal_point, 290158560Spjd ru->ru_stime.tv_usec/10000); 291158560Spjd } 292158560Spjd} 293158560Spjd 294158560Spjdstatic void 295158560Spjdsiginfo(int sig __unused) 296158560Spjd{ 297158560Spjd struct timeval after; 298158560Spjd struct rusage ru; 299158560Spjd 300158560Spjd gettimeofday(&after, (struct timezone *)NULL); 301158560Spjd getrusage(RUSAGE_CHILDREN, &ru); 302169346Sdwmalone showtime(stdout, &before_tv, &after, &ru); 303158560Spjd} 304