mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
f4ac32def2
Add some constness to avoid some warnings. Remove use register keyword. Deal with missing/unneeded extern/prototypes. Some minor type changes/casts to avoid warnings. Reviewed by: md5
270 lines
7.5 KiB
C
270 lines
7.5 KiB
C
/*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1987, 1988, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/signal.h>
|
|
#include <sys/sysctl.h>
|
|
#include <stdlib.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <locale.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
|
|
static int getstathz(void);
|
|
static void humantime(FILE *, long, long);
|
|
static void usage(void);
|
|
|
|
static char decimal_point;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int pid;
|
|
int aflag, ch, hflag, lflag, status, pflag;
|
|
struct timeval before, after;
|
|
struct rusage ru;
|
|
FILE *out = stderr;
|
|
char *ofn = NULL;
|
|
int exitonsig = 0; /* Die with same signal as child */
|
|
|
|
(void) setlocale(LC_NUMERIC, "");
|
|
decimal_point = localeconv()->decimal_point[0];
|
|
|
|
aflag = hflag = lflag = pflag = 0;
|
|
while ((ch = getopt(argc, argv, "ahlo:p")) != -1)
|
|
switch((char)ch) {
|
|
case 'a':
|
|
aflag = 1;
|
|
break;
|
|
case 'h':
|
|
hflag = 1;
|
|
break;
|
|
case 'l':
|
|
lflag = 1;
|
|
break;
|
|
case 'o':
|
|
ofn = optarg;
|
|
break;
|
|
case 'p':
|
|
pflag = 1;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
if (!(argc -= optind))
|
|
exit(0);
|
|
argv += optind;
|
|
|
|
if (ofn) {
|
|
if ((out = fopen(ofn, aflag ? "a" : "w")) == NULL)
|
|
err(1, "%s", ofn);
|
|
setvbuf(out, (char *)NULL, _IONBF, (size_t)0);
|
|
}
|
|
|
|
gettimeofday(&before, (struct timezone *)NULL);
|
|
switch(pid = fork()) {
|
|
case -1: /* error */
|
|
err(1, "time");
|
|
/* NOTREACHED */
|
|
case 0: /* child */
|
|
execvp(*argv, argv);
|
|
err(errno == ENOENT ? 127 : 126, "%s", *argv);
|
|
/* NOTREACHED */
|
|
}
|
|
/* parent */
|
|
(void)signal(SIGINT, SIG_IGN);
|
|
(void)signal(SIGQUIT, SIG_IGN);
|
|
while (wait3(&status, 0, &ru) != pid); /* XXX use waitpid */
|
|
gettimeofday(&after, (struct timezone *)NULL);
|
|
if ( ! WIFEXITED(status))
|
|
warnx("command terminated abnormally");
|
|
if (WIFSIGNALED(status))
|
|
exitonsig = WTERMSIG(status);
|
|
after.tv_sec -= before.tv_sec;
|
|
after.tv_usec -= before.tv_usec;
|
|
if (after.tv_usec < 0)
|
|
after.tv_sec--, after.tv_usec += 1000000;
|
|
if (pflag) {
|
|
/* POSIX wants output that must look like
|
|
"real %f\nuser %f\nsys %f\n" and requires
|
|
at least two digits after the radix. */
|
|
fprintf(out, "real %ld%c%02ld\n",
|
|
after.tv_sec, decimal_point,
|
|
after.tv_usec/10000);
|
|
fprintf(out, "user %ld%c%02ld\n",
|
|
ru.ru_utime.tv_sec, decimal_point,
|
|
ru.ru_utime.tv_usec/10000);
|
|
fprintf(out, "sys %ld%c%02ld\n",
|
|
ru.ru_stime.tv_sec, decimal_point,
|
|
ru.ru_stime.tv_usec/10000);
|
|
} else if (hflag) {
|
|
humantime(out, after.tv_sec, after.tv_usec/10000);
|
|
fprintf(out, " real\t");
|
|
humantime(out, ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
|
|
fprintf(out, " user\t");
|
|
humantime(out, ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
|
|
fprintf(out, " sys\n");
|
|
} else {
|
|
fprintf(out, "%9ld%c%02ld real ",
|
|
after.tv_sec, decimal_point,
|
|
after.tv_usec/10000);
|
|
fprintf(out, "%9ld%c%02ld user ",
|
|
ru.ru_utime.tv_sec, decimal_point,
|
|
ru.ru_utime.tv_usec/10000);
|
|
fprintf(out, "%9ld%c%02ld sys\n",
|
|
ru.ru_stime.tv_sec, decimal_point,
|
|
ru.ru_stime.tv_usec/10000);
|
|
}
|
|
if (lflag) {
|
|
int hz = getstathz();
|
|
u_long ticks;
|
|
|
|
ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
|
|
hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
|
|
|
|
/*
|
|
* If our round-off on the tick calculation still puts us at 0,
|
|
* then always assume at least one tick.
|
|
*/
|
|
if (ticks == 0)
|
|
ticks = 1;
|
|
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_maxrss, "maximum resident set size");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_ixrss / ticks, "average shared memory size");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_idrss / ticks, "average unshared data size");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_isrss / ticks, "average unshared stack size");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_minflt, "page reclaims");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_majflt, "page faults");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_nswap, "swaps");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_inblock, "block input operations");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_oublock, "block output operations");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_msgsnd, "messages sent");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_msgrcv, "messages received");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_nsignals, "signals received");
|
|
fprintf(out, "%10ld %s\n",
|
|
ru.ru_nvcsw, "voluntary context switches");
|
|
fprintf(out, "%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);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: time [-al] [-h|-p] [-o file] utility [argument ...]\n");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Return the frequency of the kernel's statistics clock.
|
|
*/
|
|
static int
|
|
getstathz(void)
|
|
{
|
|
struct clockinfo clockrate;
|
|
int mib[2];
|
|
size_t size;
|
|
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_CLOCKRATE;
|
|
size = sizeof clockrate;
|
|
if (sysctl(mib, 2, &clockrate, &size, NULL, 0) == -1)
|
|
err(1, "sysctl kern.clockrate");
|
|
return clockrate.stathz;
|
|
}
|
|
|
|
static void
|
|
humantime(FILE *out, long sec, long usec)
|
|
{
|
|
long days, hrs, mins;
|
|
|
|
days = sec / (60L * 60 * 24);
|
|
sec %= (60L * 60 * 24);
|
|
hrs = sec / (60L * 60);
|
|
sec %= (60L * 60);
|
|
mins = sec / 60;
|
|
sec %= 60;
|
|
|
|
fprintf(out, "\t");
|
|
if (days)
|
|
fprintf(out, "%ldd", days);
|
|
if (hrs)
|
|
fprintf(out, "%ldh", hrs);
|
|
if (mins)
|
|
fprintf(out, "%ldm", mins);
|
|
fprintf(out, "%ld%c%02lds", sec, decimal_point, usec);
|
|
}
|