2 * Copyright (c) 1987, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1987, 1988, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)time.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.bin/time/time.c,v 1.14.2.5 2002/06/28 08:35:15 tjr Exp $
35 #include <sys/resource.h>
36 #include <sys/signal.h>
53 static void humantime(FILE *, long, long);
54 static void showtime(FILE *, struct timespec
*, struct timespec
*,
56 static void siginfo(int);
58 static void usage(void);
60 static sig_atomic_t siginfo_recvd
;
61 static char decimal_point
;
62 struct timespec before_ts
;
63 static int hflag
, pflag
;
66 main(int argc
, char **argv
)
69 int aflag
, ch
, lflag
, status
;
71 struct timespec after
;
74 const char *ofn
= NULL
;
76 setlocale(LC_NUMERIC
, "");
77 decimal_point
= localeconv()->decimal_point
[0];
79 aflag
= hflag
= lflag
= pflag
= 0;
80 while ((ch
= getopt(argc
, argv
, "ahlo:p")) != -1)
103 if (!(argc
-= optind
))
108 if ((out
= fopen(ofn
, aflag
? "ae" : "we")) == NULL
)
110 setvbuf(out
, NULL
, _IONBF
, (size_t)0);
113 if (clock_gettime(CLOCK_MONOTONIC
, &before_ts
) == -1)
114 err(1, "clock_gettime failed");
115 switch (pid
= fork()) {
117 err(1, "could not fork");
121 err(errno
== ENOENT
? 127 : 126, "%s", *argv
);
125 if (signal(SIGINT
, SIG_IGN
) == SIG_ERR
)
126 err(1, "signal failed");
127 if (signal(SIGQUIT
, SIG_IGN
) == SIG_ERR
)
128 err(1, "signal failed");
131 if (signal(SIGINFO
, siginfo
) == SIG_ERR
)
132 err(1, "signal failed");
133 siginterrupt(SIGINFO
,1 );
135 while (wait4(pid
, &status
, 0, &ru
) != pid
){
138 if (clock_gettime(CLOCK_MONOTONIC
, &after
) == -1)
139 err(1, "clock_gettime failed");
140 getrusage(RUSAGE_CHILDREN
, &ru
);
141 showtime(stdout
, &before_ts
, &after
, &ru
);
144 if (clock_gettime(CLOCK_MONOTONIC
, &after
) == -1)
145 err(1, "clock_gettime failed");
146 if (!WIFEXITED(status
))
147 warnx("command terminated abnormally");
148 exit_on_sig
= WIFSIGNALED(status
) ? WTERMSIG(status
) : 0;
149 showtime(out
, &before_ts
, &after
, &ru
);
150 #ifndef BOOTSTRAPPING
155 if (kinfo_get_sched_stathz(&hz
))
156 err(1, "kinfo_get_sched_stathz");
157 ticks
= hz
* (ru
.ru_utime
.tv_sec
+ ru
.ru_stime
.tv_sec
) +
158 hz
* (ru
.ru_utime
.tv_usec
+ ru
.ru_stime
.tv_usec
) / 1000000;
161 * If our round-off on the tick calculation still puts us at 0,
162 * then always assume at least one tick.
167 fprintf(out
, "%10ld %s\n",
168 ru
.ru_maxrss
, "maximum resident set size");
169 fprintf(out
, "%10ld %s\n",
170 ru
.ru_ixrss
/ ticks
, "average shared memory size");
171 fprintf(out
, "%10ld %s\n",
172 ru
.ru_idrss
/ ticks
, "average unshared data size");
173 fprintf(out
, "%10ld %s\n",
174 ru
.ru_isrss
/ ticks
, "average unshared stack size");
175 fprintf(out
, "%10ld %s\n",
176 ru
.ru_minflt
, "page reclaims");
177 fprintf(out
, "%10ld %s\n",
178 ru
.ru_majflt
, "page faults");
179 fprintf(out
, "%10ld %s\n",
180 ru
.ru_nswap
, "swaps");
181 fprintf(out
, "%10ld %s\n",
182 ru
.ru_inblock
, "block input operations");
183 fprintf(out
, "%10ld %s\n",
184 ru
.ru_oublock
, "block output operations");
185 fprintf(out
, "%10ld %s\n",
186 ru
.ru_msgsnd
, "messages sent");
187 fprintf(out
, "%10ld %s\n",
188 ru
.ru_msgrcv
, "messages received");
189 fprintf(out
, "%10ld %s\n",
190 ru
.ru_nsignals
, "signals received");
191 fprintf(out
, "%10ld %s\n",
192 ru
.ru_nvcsw
, "voluntary context switches");
193 fprintf(out
, "%10ld %s\n",
194 ru
.ru_nivcsw
, "involuntary context switches");
198 * If the child has exited on a signal, exit on the same
199 * signal, too, in order to reproduce the child's exit
200 * status. However, avoid actually dumping core from
204 if (signal(exit_on_sig
, SIG_DFL
) == SIG_ERR
)
205 warn("signal failed");
207 kill(getpid(), exit_on_sig
);
209 exit(WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
216 "usage: time [-al] [-h|-p] [-o file] utility [argument ...]\n");
221 humantime(FILE *out
, long sec
, long usec
)
223 long days
, hrs
, mins
;
225 days
= sec
/ (60L * 60 * 24);
226 sec
%= (60L * 60 * 24);
227 hrs
= sec
/ (60L * 60);
234 fprintf(out
, "%ldd", days
);
236 fprintf(out
, "%ldh", hrs
);
238 fprintf(out
, "%ldm", mins
);
239 fprintf(out
, "%ld%c%02lds", sec
, decimal_point
, usec
);
243 showtime(FILE *out
, struct timespec
*before
, struct timespec
*after
,
247 after
->tv_sec
-= before
->tv_sec
;
248 after
->tv_nsec
-= before
->tv_nsec
;
249 if (after
->tv_nsec
< 0)
250 after
->tv_sec
--, after
->tv_nsec
+= 1000000000L;
253 /* POSIX wants output that must look like
254 "real %f\nuser %f\nsys %f\n" and requires
255 at least two digits after the radix. */
256 fprintf(out
, "real %jd%c%02ld\n",
257 (intmax_t)after
->tv_sec
, decimal_point
,
258 after
->tv_nsec
/10000000L);
259 fprintf(out
, "user %jd%c%02ld\n",
260 (intmax_t)ru
->ru_utime
.tv_sec
, decimal_point
,
261 ru
->ru_utime
.tv_usec
/10000);
262 fprintf(out
, "sys %jd%c%02ld\n",
263 (intmax_t)ru
->ru_stime
.tv_sec
, decimal_point
,
264 ru
->ru_stime
.tv_usec
/10000);
266 humantime(out
, after
->tv_sec
, after
->tv_nsec
/10000000);
267 fprintf(out
, " real\t");
268 humantime(out
, ru
->ru_utime
.tv_sec
, ru
->ru_utime
.tv_usec
/10000);
269 fprintf(out
, " user\t");
270 humantime(out
, ru
->ru_stime
.tv_sec
, ru
->ru_stime
.tv_usec
/10000);
271 fprintf(out
, " sys\n");
273 fprintf(out
, "%9jd%c%02ld real ",
274 (intmax_t)after
->tv_sec
, decimal_point
,
275 after
->tv_nsec
/10000000);
276 fprintf(out
, "%9jd%c%02ld user ",
277 (intmax_t)ru
->ru_utime
.tv_sec
, decimal_point
,
278 ru
->ru_utime
.tv_usec
/10000);
279 fprintf(out
, "%9jd%c%02ld sys\n",
280 (intmax_t)ru
->ru_stime
.tv_sec
, decimal_point
,
281 ru
->ru_stime
.tv_usec
/10000);
286 siginfo(int sig __unused
)