#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1987, 1988, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif
#ifndef lint
#if 0
static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: time.c,v 1.9 1997/10/20 03:28:21 lukem Exp $");
#endif
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
int lflag;
int portableflag;
int main __P((int, char **));
int
main(argc, argv)
int argc;
char **argv;
{
int pid;
int ch, status;
struct timeval before, after;
struct rusage ru;
#ifdef __GNUC__
(void)&argv;
#endif
lflag = 0;
while ((ch = getopt(argc, argv, "lp")) != -1)
switch((char)ch) {
case 'p':
portableflag = 1;
break;
case 'l':
lflag = 1;
break;
case '?':
default:
fprintf(stderr, "usage: time [-lp] command.\n");
exit(1);
}
if (!(argc -= optind))
exit(0);
argv += optind;
gettimeofday(&before, (struct timezone *)NULL);
switch(pid = vfork()) {
case -1:
perror("time");
exit(1);
case 0:
execvp(*argv, argv);
perror(*argv);
_exit((errno == ENOENT) ? 127 : 126);
}
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
while (wait3(&status, 0, &ru) != pid);
gettimeofday(&after, (struct timezone *)NULL);
if (!WIFEXITED(status))
fprintf(stderr, "Command terminated abnormally.\n");
timersub(&after, &before, &after);
if (portableflag) {
fprintf (stderr, "real %9ld.%02ld\n",
(long)after.tv_sec, (long)after.tv_usec/10000);
fprintf (stderr, "user %9ld.%02ld\n",
(long)ru.ru_utime.tv_sec, (long)ru.ru_utime.tv_usec/10000);
fprintf (stderr, "sys %9ld.%02ld\n",
(long)ru.ru_stime.tv_sec, (long)ru.ru_stime.tv_usec/10000);
} else {
fprintf(stderr, "%9ld.%02ld real ",
(long)after.tv_sec, (long)after.tv_usec/10000);
fprintf(stderr, "%9ld.%02ld user ",
(long)ru.ru_utime.tv_sec, (long)ru.ru_utime.tv_usec/10000);
fprintf(stderr, "%9ld.%02ld sys\n",
(long)ru.ru_stime.tv_sec, (long)ru.ru_stime.tv_usec/10000);
}
if (lflag) {
int hz = 100;
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;
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, "page reclaims");
fprintf(stderr, "%10ld %s\n",
ru.ru_majflt, "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");
}
exit (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
}