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/* $OpenBSD: time.c,v 1.21 2015/10/10 14:49:23 deraadt Exp $ */
/* $NetBSD: time.c,v 1.7 1995/06/27 00:34:00 jtc Exp $ */
/*
* Copyright (c) 1987, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <sys/sysctl.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int lflag;
int portableflag;
__dead void usage(void);
int
main(int argc, char *argv[])
{
pid_t pid;
int ch, status;
struct timeval before, after;
struct rusage ru;
int exitonsig = 0;
if (pledge("stdio proc exec", NULL) == -1)
err(1, "pledge");
while ((ch = getopt(argc, argv, "lp")) != -1) {
switch(ch) {
case 'l':
lflag = 1;
break;
case 'p':
portableflag = 1;
break;
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (argc < 1)
usage();
gettimeofday(&before, (struct timezone *)NULL);
switch(pid = vfork()) {
case -1: /* error */
perror("time");
exit(1);
/* NOTREACHED */
case 0: /* child */
execvp(*argv, argv);
perror(*argv);
_exit((errno == ENOENT) ? 127 : 126);
/* NOTREACHED */
}
/* parent */
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
while (wait3(&status, 0, &ru) != pid)
;
gettimeofday(&after, (struct timezone *)NULL);
if (WIFSIGNALED(status))
exitonsig = WTERMSIG(status);
if (!WIFEXITED(status))
fprintf(stderr, "Command terminated abnormally.\n");
timersub(&after, &before, &after);
if (portableflag) {
fprintf(stderr, "real %9lld.%02ld\n",
(long long)after.tv_sec, after.tv_usec/10000);
fprintf(stderr, "user %9lld.%02ld\n",
(long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
fprintf(stderr, "sys %9lld.%02ld\n",
(long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
} else {
fprintf(stderr, "%9lld.%02ld real ",
(long long)after.tv_sec, after.tv_usec/10000);
fprintf(stderr, "%9lld.%02ld user ",
(long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
fprintf(stderr, "%9lld.%02ld sys\n",
(long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
}
if (lflag) {
int hz;
long ticks;
int mib[2];
struct clockinfo clkinfo;
size_t size;
mib[0] = CTL_KERN;
mib[1] = KERN_CLOCKRATE;
size = sizeof(clkinfo);
if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0)
err(1, "sysctl");
hz = clkinfo.hz;
ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
fprintf(stderr, "%10ld %s\n",
ru.ru_maxrss, "maximum resident set size");
fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0,
"average shared memory size");
fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0,
"average unshared data size");
fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0,
"average unshared stack size");
fprintf(stderr, "%10ld %s\n",
ru.ru_minflt, "minor page faults");
fprintf(stderr, "%10ld %s\n",
ru.ru_majflt, "major page faults");
fprintf(stderr, "%10ld %s\n",
ru.ru_nswap, "swaps");
fprintf(stderr, "%10ld %s\n",
ru.ru_inblock, "block input operations");
fprintf(stderr, "%10ld %s\n",
ru.ru_oublock, "block output operations");
fprintf(stderr, "%10ld %s\n",
ru.ru_msgsnd, "messages sent");
fprintf(stderr, "%10ld %s\n",
ru.ru_msgrcv, "messages received");
fprintf(stderr, "%10ld %s\n",
ru.ru_nsignals, "signals received");
fprintf(stderr, "%10ld %s\n",
ru.ru_nvcsw, "voluntary context switches");
fprintf(stderr, "%10ld %s\n",
ru.ru_nivcsw, "involuntary context switches");
}
if (exitonsig) {
if (signal(exitonsig, SIG_DFL) == SIG_ERR)
perror("signal");
else
kill(getpid(), exitonsig);
}
exit(WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
}
__dead void
usage(void)
{
extern char *__progname;
(void)fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n",
__progname);
exit(1);
}
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