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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1987, 1988, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)time.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/time/time.c,v 1.14.2.5 2002/06/28 08:35:15 tjr Exp $
36 * $DragonFly: src/usr.bin/time/time.c,v 1.11 2005/03/04 16:54:37 liamfoy Exp $
39 #include <sys/param.h>
41 #include <sys/resource.h>
42 #include <sys/signal.h>
43 #include <sys/sysctl.h>
56 static void humantime(FILE *, long, long);
57 static void usage(void);
59 static char decimal_point
;
62 main(int argc
, char **argv
)
65 int aflag
, ch
, hflag
, lflag
, status
, pflag
;
67 struct timeval before
, after
;
70 const char *ofn
= NULL
;
72 setlocale(LC_NUMERIC
, "");
73 decimal_point
= localeconv()->decimal_point
[0];
75 aflag
= hflag
= lflag
= pflag
= 0;
76 while ((ch
= getopt(argc
, argv
, "ahlo:p")) != -1)
97 if (!(argc
-= optind
))
102 if ((out
= fopen(ofn
, aflag
? "a" : "w")) == NULL
)
104 setvbuf(out
, (char *)NULL
, _IONBF
, (size_t)0);
107 if (gettimeofday(&before
, (struct timezone
*)NULL
) == -1)
108 err(1, "gettimeofday failed");
109 switch (pid
= fork()) {
111 err(1, "could not fork");
115 err(errno
== ENOENT
? 127 : 126, "%s", *argv
);
119 if (signal(SIGINT
, SIG_IGN
) == SIG_ERR
)
120 err(1, "signal failed");
121 if (signal(SIGQUIT
, SIG_IGN
) == SIG_ERR
)
122 err(1, "signal failed");
123 while (wait4(pid
, &status
, 0, &ru
) != pid
) /* XXX use waitpid */
125 if (gettimeofday(&after
, (struct timezone
*)NULL
) == -1)
126 err(1, "gettimeofday failed");
127 if (!WIFEXITED(status
))
128 warnx("command terminated abnormally");
129 exit_on_sig
= WIFSIGNALED(status
) ? WTERMSIG(status
) : 0;
130 after
.tv_sec
-= before
.tv_sec
;
131 after
.tv_usec
-= before
.tv_usec
;
132 if (after
.tv_usec
< 0)
133 after
.tv_sec
--, after
.tv_usec
+= 1000000;
135 /* POSIX wants output that must look like
136 "real %f\nuser %f\nsys %f\n" and requires
137 at least two digits after the radix. */
138 fprintf(out
, "real %ld%c%02ld\n",
139 after
.tv_sec
, decimal_point
,
140 after
.tv_usec
/ 10000);
141 fprintf(out
, "user %ld%c%02ld\n",
142 ru
.ru_utime
.tv_sec
, decimal_point
,
143 ru
.ru_utime
.tv_usec
/ 10000);
144 fprintf(out
, "sys %ld%c%02ld\n",
145 ru
.ru_stime
.tv_sec
, decimal_point
,
146 ru
.ru_stime
.tv_usec
/ 10000);
148 humantime(out
, after
.tv_sec
, after
.tv_usec
/ 10000);
149 fprintf(out
, " real\t");
150 humantime(out
, ru
.ru_utime
.tv_sec
, ru
.ru_utime
.tv_usec
/ 10000);
151 fprintf(out
, " user\t");
152 humantime(out
, ru
.ru_stime
.tv_sec
, ru
.ru_stime
.tv_usec
/ 10000);
153 fprintf(out
, " sys\n");
155 fprintf(out
, "%9ld%c%02ld real ",
156 after
.tv_sec
, decimal_point
,
157 after
.tv_usec
/ 10000);
158 fprintf(out
, "%9ld%c%02ld user ",
159 ru
.ru_utime
.tv_sec
, decimal_point
,
160 ru
.ru_utime
.tv_usec
/ 10000);
161 fprintf(out
, "%9ld%c%02ld sys\n",
162 ru
.ru_stime
.tv_sec
, decimal_point
,
163 ru
.ru_stime
.tv_usec
/ 10000);
169 if (kinfo_get_sched_stathz(&hz
))
170 err(1, "kinfo_get_sched_stathz");
171 ticks
= hz
* (ru
.ru_utime
.tv_sec
+ ru
.ru_stime
.tv_sec
) +
172 hz
* (ru
.ru_utime
.tv_usec
+ ru
.ru_stime
.tv_usec
) / 1000000;
175 * If our round-off on the tick calculation still puts us at 0,
176 * then always assume at least one tick.
181 fprintf(out
, "%10ld %s\n",
182 ru
.ru_maxrss
, "maximum resident set size");
183 fprintf(out
, "%10ld %s\n",
184 ru
.ru_ixrss
/ ticks
, "average shared memory size");
185 fprintf(out
, "%10ld %s\n",
186 ru
.ru_idrss
/ ticks
, "average unshared data size");
187 fprintf(out
, "%10ld %s\n",
188 ru
.ru_isrss
/ ticks
, "average unshared stack size");
189 fprintf(out
, "%10ld %s\n",
190 ru
.ru_minflt
, "page reclaims");
191 fprintf(out
, "%10ld %s\n",
192 ru
.ru_majflt
, "page faults");
193 fprintf(out
, "%10ld %s\n",
194 ru
.ru_nswap
, "swaps");
195 fprintf(out
, "%10ld %s\n",
196 ru
.ru_inblock
, "block input operations");
197 fprintf(out
, "%10ld %s\n",
198 ru
.ru_oublock
, "block output operations");
199 fprintf(out
, "%10ld %s\n",
200 ru
.ru_msgsnd
, "messages sent");
201 fprintf(out
, "%10ld %s\n",
202 ru
.ru_msgrcv
, "messages received");
203 fprintf(out
, "%10ld %s\n",
204 ru
.ru_nsignals
, "signals received");
205 fprintf(out
, "%10ld %s\n",
206 ru
.ru_nvcsw
, "voluntary context switches");
207 fprintf(out
, "%10ld %s\n",
208 ru
.ru_nivcsw
, "involuntary context switches");
211 * If the child has exited on a signal, exit on the same
212 * signal, too, in order to reproduce the child's exit
213 * status. However, avoid actually dumping core from
217 if (signal(exit_on_sig
, SIG_DFL
) == SIG_ERR
)
218 warn("signal failed");
220 kill(getpid(), exit_on_sig
);
222 exit(WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
229 "usage: time [-al] [-h|-p] [-o file] utility [argument ...]\n");
234 humantime(FILE *out
, long sec
, long usec
)
236 long days
, hrs
, mins
;
238 days
= sec
/ (60L * 60 * 24);
239 sec
%= (60L * 60 * 24);
240 hrs
= sec
/ (60L * 60);
247 fprintf(out
, "%ldd", days
);
249 fprintf(out
, "%ldh", hrs
);
251 fprintf(out
, "%ldm", mins
);
252 fprintf(out
, "%ld%c%02lds", sec
, decimal_point
, usec
);