time.c revision 1.1 1 1.1 cgd /*
2 1.1 cgd * Copyright (c) 1987, 1988 The Regents of the University of California.
3 1.1 cgd * All rights reserved.
4 1.1 cgd *
5 1.1 cgd * Redistribution and use in source and binary forms, with or without
6 1.1 cgd * modification, are permitted provided that the following conditions
7 1.1 cgd * are met:
8 1.1 cgd * 1. Redistributions of source code must retain the above copyright
9 1.1 cgd * notice, this list of conditions and the following disclaimer.
10 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright
11 1.1 cgd * notice, this list of conditions and the following disclaimer in the
12 1.1 cgd * documentation and/or other materials provided with the distribution.
13 1.1 cgd * 3. All advertising materials mentioning features or use of this software
14 1.1 cgd * must display the following acknowledgement:
15 1.1 cgd * This product includes software developed by the University of
16 1.1 cgd * California, Berkeley and its contributors.
17 1.1 cgd * 4. Neither the name of the University nor the names of its contributors
18 1.1 cgd * may be used to endorse or promote products derived from this software
19 1.1 cgd * without specific prior written permission.
20 1.1 cgd *
21 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 1.1 cgd * SUCH DAMAGE.
32 1.1 cgd */
33 1.1 cgd
34 1.1 cgd #ifndef lint
35 1.1 cgd char copyright[] =
36 1.1 cgd "@(#) Copyright (c) 1987, 1988 The Regents of the University of California.\n\
37 1.1 cgd All rights reserved.\n";
38 1.1 cgd #endif /* not lint */
39 1.1 cgd
40 1.1 cgd #ifndef lint
41 1.1 cgd static char sccsid[] = "@(#)time.c 4.9 (Berkeley) 6/1/90";
42 1.1 cgd #endif /* not lint */
43 1.1 cgd
44 1.1 cgd #include <sys/types.h>
45 1.1 cgd #include <sys/time.h>
46 1.1 cgd #include <sys/resource.h>
47 1.1 cgd #include <sys/signal.h>
48 1.1 cgd #include <stdio.h>
49 1.1 cgd
50 1.1 cgd main(argc, argv)
51 1.1 cgd int argc;
52 1.1 cgd char **argv;
53 1.1 cgd {
54 1.1 cgd extern int optind;
55 1.1 cgd register int pid;
56 1.1 cgd int ch, status, lflag;
57 1.1 cgd struct timeval before, after;
58 1.1 cgd struct rusage ru;
59 1.1 cgd
60 1.1 cgd lflag = 0;
61 1.1 cgd while ((ch = getopt(argc, argv, "l")) != EOF)
62 1.1 cgd switch((char)ch) {
63 1.1 cgd case 'l':
64 1.1 cgd lflag = 1;
65 1.1 cgd break;
66 1.1 cgd case '?':
67 1.1 cgd default:
68 1.1 cgd fprintf(stderr, "usage: time [-l] command.\n");
69 1.1 cgd exit(1);
70 1.1 cgd }
71 1.1 cgd
72 1.1 cgd if (!(argc -= optind))
73 1.1 cgd exit(0);
74 1.1 cgd argv += optind;
75 1.1 cgd
76 1.1 cgd gettimeofday(&before, (struct timezone *)NULL);
77 1.1 cgd switch(pid = vfork()) {
78 1.1 cgd case -1: /* error */
79 1.1 cgd perror("time");
80 1.1 cgd exit(1);
81 1.1 cgd /* NOTREACHED */
82 1.1 cgd case 0: /* child */
83 1.1 cgd execvp(*argv, argv);
84 1.1 cgd perror(*argv);
85 1.1 cgd _exit(1);
86 1.1 cgd /* NOTREACHED */
87 1.1 cgd }
88 1.1 cgd /* parent */
89 1.1 cgd (void)signal(SIGINT, SIG_IGN);
90 1.1 cgd (void)signal(SIGQUIT, SIG_IGN);
91 1.1 cgd while (wait3(&status, 0, &ru) != pid); /* XXX use waitpid */
92 1.1 cgd gettimeofday(&after, (struct timezone *)NULL);
93 1.1 cgd if (status&0377)
94 1.1 cgd fprintf(stderr, "Command terminated abnormally.\n");
95 1.1 cgd after.tv_sec -= before.tv_sec;
96 1.1 cgd after.tv_usec -= before.tv_usec;
97 1.1 cgd if (after.tv_usec < 0)
98 1.1 cgd after.tv_sec--, after.tv_usec += 1000000;
99 1.1 cgd fprintf(stderr, "%9ld.%02ld real ", after.tv_sec, after.tv_usec/10000);
100 1.1 cgd fprintf(stderr, "%9ld.%02ld user ",
101 1.1 cgd ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
102 1.1 cgd fprintf(stderr, "%9ld.%02ld sys\n",
103 1.1 cgd ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
104 1.1 cgd if (lflag) {
105 1.1 cgd int hz = 100; /* XXX */
106 1.1 cgd long ticks;
107 1.1 cgd
108 1.1 cgd ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
109 1.1 cgd hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
110 1.1 cgd fprintf(stderr, "%10ld %s\n",
111 1.1 cgd ru.ru_maxrss, "maximum resident set size");
112 1.1 cgd fprintf(stderr, "%10ld %s\n",
113 1.1 cgd ru.ru_ixrss / ticks, "average shared memory size");
114 1.1 cgd fprintf(stderr, "%10ld %s\n",
115 1.1 cgd ru.ru_idrss / ticks, "average unshared data size");
116 1.1 cgd fprintf(stderr, "%10ld %s\n",
117 1.1 cgd ru.ru_isrss / ticks, "average unshared stack size");
118 1.1 cgd fprintf(stderr, "%10ld %s\n",
119 1.1 cgd ru.ru_minflt, "page reclaims");
120 1.1 cgd fprintf(stderr, "%10ld %s\n",
121 1.1 cgd ru.ru_majflt, "page faults");
122 1.1 cgd fprintf(stderr, "%10ld %s\n",
123 1.1 cgd ru.ru_nswap, "swaps");
124 1.1 cgd fprintf(stderr, "%10ld %s\n",
125 1.1 cgd ru.ru_inblock, "block input operations");
126 1.1 cgd fprintf(stderr, "%10ld %s\n",
127 1.1 cgd ru.ru_oublock, "block output operations");
128 1.1 cgd fprintf(stderr, "%10ld %s\n",
129 1.1 cgd ru.ru_msgsnd, "messages sent");
130 1.1 cgd fprintf(stderr, "%10ld %s\n",
131 1.1 cgd ru.ru_msgrcv, "messages received");
132 1.1 cgd fprintf(stderr, "%10ld %s\n",
133 1.1 cgd ru.ru_nsignals, "signals received");
134 1.1 cgd fprintf(stderr, "%10ld %s\n",
135 1.1 cgd ru.ru_nvcsw, "voluntary context switches");
136 1.1 cgd fprintf(stderr, "%10ld %s\n",
137 1.1 cgd ru.ru_nivcsw, "involuntary context switches");
138 1.1 cgd }
139 1.1 cgd exit (status>>8);
140 1.1 cgd }
141