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/* $OpenBSD: time.c,v 1.25 2017/08/21 13:38:02 schwarze Exp $ */ |
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/* $NetBSD: time.c,v 1.7 1995/06/27 00:34:00 jtc Exp $ */ |
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/* |
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* Copyright (c) 1987, 1988, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#include <sys/wait.h> |
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#include <sys/sysctl.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <signal.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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__dead void usage(void); |
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int |
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main(int argc, char *argv[]) |
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{ |
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struct rusage ru; |
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struct timespec before, after, during; |
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int ch, exitonsig, lflag, portableflag, status; |
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pid_t pid; |
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✗✓ |
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if (pledge("stdio proc exec flock rpath cpath wpath", NULL) == -1) |
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err(1, "pledge"); |
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exitonsig = lflag = portableflag = 0; |
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✗✓ |
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while ((ch = getopt(argc, argv, "lp")) != -1) { |
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switch(ch) { |
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case 'l': |
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lflag = 1; |
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break; |
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case 'p': |
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portableflag = 1; |
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break; |
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default: |
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usage(); |
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} |
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} |
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argc -= optind; |
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argv += optind; |
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✗✓ |
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if (argc < 1) |
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usage(); |
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clock_gettime(CLOCK_MONOTONIC, &before); |
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✗✗✓ |
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switch(pid = vfork()) { |
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case -1: /* error */ |
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warn("fork"); |
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return 1; |
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case 0: /* child */ |
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execvp(*argv, argv); |
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warn("%s", *argv); |
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_exit((errno == ENOENT) ? 127 : 126); |
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} |
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/* parent */ |
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signal(SIGINT, SIG_IGN); |
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signal(SIGQUIT, SIG_IGN); |
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✗✓ |
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while (wait3(&status, 0, &ru) != pid) |
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; |
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clock_gettime(CLOCK_MONOTONIC, &after); |
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✓✗✗✓
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if (WIFSIGNALED(status)) |
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exitonsig = WTERMSIG(status); |
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✗✓ |
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if (!WIFEXITED(status)) |
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fprintf(stderr, "Command terminated abnormally.\n"); |
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✓✓ |
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timespecsub(&after, &before, &during); |
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if (portableflag) { |
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fprintf(stderr, "real %9lld.%02ld\n", |
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(long long)during.tv_sec, during.tv_nsec/10000000); |
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fprintf(stderr, "user %9lld.%02ld\n", |
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(long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); |
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fprintf(stderr, "sys %9lld.%02ld\n", |
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(long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); |
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} else { |
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fprintf(stderr, "%9lld.%02ld real ", |
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(long long)during.tv_sec, during.tv_nsec/10000000); |
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fprintf(stderr, "%9lld.%02ld user ", |
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(long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); |
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fprintf(stderr, "%9lld.%02ld sys\n", |
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(long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); |
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} |
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✗✓ |
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if (lflag) { |
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int hz; |
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long ticks; |
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int mib[2]; |
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struct clockinfo clkinfo; |
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size_t size; |
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mib[0] = CTL_KERN; |
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mib[1] = KERN_CLOCKRATE; |
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size = sizeof(clkinfo); |
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if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0) |
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err(1, "sysctl"); |
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hz = clkinfo.hz; |
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ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + |
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hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_maxrss, "maximum resident set size"); |
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fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0, |
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"average shared memory size"); |
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fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0, |
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"average unshared data size"); |
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fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0, |
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"average unshared stack size"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_minflt, "minor page faults"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_majflt, "major page faults"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_nswap, "swaps"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_inblock, "block input operations"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_oublock, "block output operations"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_msgsnd, "messages sent"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_msgrcv, "messages received"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_nsignals, "signals received"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_nvcsw, "voluntary context switches"); |
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fprintf(stderr, "%10ld %s\n", |
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ru.ru_nivcsw, "involuntary context switches"); |
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} |
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✗✓ |
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if (exitonsig) { |
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if (signal(exitonsig, SIG_DFL) == SIG_ERR) |
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return 128 + exitonsig; |
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else |
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raise(exitonsig); |
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} |
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✓✗ |
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return WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE; |
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} |
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__dead void |
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usage(void) |
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{ |
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fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n", |
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getprogname()); |
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exit(1); |
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} |