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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Time a command
*/
#include <stdio.h>
#include <signal.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <libintl.h>
#include <locale.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/times.h>
#include <sys/wait.h>
/*
* The following use of HZ/10 will work correctly only if HZ is a multiple
* of 10. However the only values for HZ now in use are 100 for the 3B
* and 60 for other machines.
*
* The first value was HZ/10. Since HZ should be gotten from sysconf()
* it is dynamically initialized at entry to the main program.
*/
static clock_t quant[] = { 10, 10, 10, 6, 10, 6, 10, 10, 10 };
static char *pad = "000 ";
static char *sep = "\0\0.\0:\0:\0\0";
static char *nsep = "\0\0.\0 \0 \0\0";
static void usage(void);
static void printt(char *, clock_t);
int
main(int argc, char **argv)
{
struct tms buffer;
pid_t p;
int status;
int pflag = 0;
int c;
int clock_tick = CLK_TCK;
clock_t before, after;
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
(void) textdomain(TEXT_DOMAIN);
while ((c = getopt(argc, argv, "p")) != EOF)
switch (c) {
case 'p':
pflag++;
break;
case '?':
usage();
}
argc -= optind;
argv += optind;
/*
* time(1) is only accurate to a tenth of a second. We need to
* determine the number of clock ticks in a tenth of a second in
* order to later divide away what we don't care about.
*/
quant[0] = clock_tick/10;
before = times(&buffer);
if (argc < 1)
usage();
p = fork();
if (p == (pid_t)-1) {
perror("time");
exit(2);
}
if (p == (pid_t)0) {
(void) execvp(argv[0], &argv[0]);
perror(argv[0]);
if (errno == ENOENT)
exit(127);
else
exit(126);
}
(void) signal(SIGINT, SIG_IGN);
(void) signal(SIGQUIT, SIG_IGN);
while (wait(&status) != p);
if ((status & 0377) != '\0')
(void) fprintf(stderr, "time: %s\n",
gettext("command terminated abnormally."));
after = times(&buffer);
(void) fprintf(stderr, "\n");
if (pflag)
(void) fprintf(stderr, "real %.2f\nuser %.2f\nsys %.2f\n",
(double)(after-before)/clock_tick,
(double)buffer.tms_cutime/clock_tick,
(double)buffer.tms_cstime/clock_tick);
else {
printt("real", (after-before));
printt("user", buffer.tms_cutime);
printt("sys ", buffer.tms_cstime);
}
return ((status & 0xff00)
? (status >> 8)
: ((status & 0x00ff) ? ((status & ~WCOREFLG) | 0200) : 0));
}
static void
printt(char *s, clock_t a)
{
int i;
char digit[9];
char c;
int nonzero;
a /= quant[0]; /* Divide away the accuracy we don't care about */
/*
* We now have the number of tenths of seconds elapsed in terms of
* ticks. Loop through to determine the actual digits.
*/
for (i = 1; i < 9; i++) {
digit[i] = a % quant[i];
a /= quant[i];
}
(void) fprintf(stderr, s);
nonzero = 0;
while (--i > 0) {
c = (digit[i] != 0) ? digit[i]+'0' : (nonzero ? '0': pad[i]);
if (c != '\0')
(void) putc(c, stderr);
nonzero |= digit[i];
c = nonzero?sep[i]:nsep[i];
if (c != '\0')
(void) putc(c, stderr);
}
(void) fprintf(stderr, "\n");
}
static void
usage(void)
{
(void) fprintf(stderr,
gettext("usage: time [-p] utility [argument...]\n"));
exit(1);
}
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