Annotation of src/usr.bin/time/time.c, Revision 1.13
1.13 ! deraadt 1: /* $OpenBSD: time.c,v 1.12 2002/02/16 21:27:55 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: time.c,v 1.7 1995/06/27 00:34:00 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1987, 1988, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1987, 1988, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
46: #endif
1.13 ! deraadt 47: static char rcsid[] = "$OpenBSD: time.c,v 1.12 2002/02/16 21:27:55 millert Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
1.7 art 50: #include <sys/param.h>
1.1 deraadt 51: #include <sys/time.h>
52: #include <sys/resource.h>
53: #include <sys/wait.h>
1.7 art 54: #include <sys/sysctl.h>
1.11 mpech 55:
56: #include <err.h>
57: #include <errno.h>
1.1 deraadt 58: #include <signal.h>
59: #include <stdio.h>
60: #include <stdlib.h>
61: #include <unistd.h>
62:
63: int lflag;
64: int portableflag;
65:
1.12 millert 66: __dead void usage(void);
1.11 mpech 67:
1.1 deraadt 68: int
69: main(argc, argv)
70: int argc;
71: char **argv;
72: {
1.13 ! deraadt 73: pid_t pid;
1.1 deraadt 74: int ch, status;
75: struct timeval before, after;
76: struct rusage ru;
1.5 deraadt 77: int exitonsig = 0;
1.1 deraadt 78:
1.11 mpech 79:
80: while ((ch = getopt(argc, argv, "lp")) != -1) {
81: switch(ch) {
82: case 'l':
83: lflag = 1;
84: break;
1.1 deraadt 85: case 'p':
86: portableflag = 1;
87: break;
88: case '?':
89: default:
1.11 mpech 90: usage();
91: /* NOTREACHED */
1.1 deraadt 92: }
1.11 mpech 93: }
1.1 deraadt 94:
1.11 mpech 95: argc -= optind;
1.1 deraadt 96: argv += optind;
1.11 mpech 97:
98: if (argc < 1)
99: usage();
1.1 deraadt 100:
101: gettimeofday(&before, (struct timezone *)NULL);
102: switch(pid = vfork()) {
103: case -1: /* error */
104: perror("time");
105: exit(1);
106: /* NOTREACHED */
107: case 0: /* child */
108: execvp(*argv, argv);
109: perror(*argv);
110: _exit((errno == ENOENT) ? 127 : 126);
111: /* NOTREACHED */
112: }
113:
114: /* parent */
115: (void)signal(SIGINT, SIG_IGN);
116: (void)signal(SIGQUIT, SIG_IGN);
1.3 deraadt 117: while (wait3(&status, 0, &ru) != pid)
118: ;
1.1 deraadt 119: gettimeofday(&after, (struct timezone *)NULL);
1.5 deraadt 120: if (WIFSIGNALED(status))
121: exitonsig = WTERMSIG(status);
1.1 deraadt 122: if (!WIFEXITED(status))
123: fprintf(stderr, "Command terminated abnormally.\n");
124: timersub(&after, &before, &after);
125:
126: if (portableflag) {
1.3 deraadt 127: fprintf(stderr, "real %9ld.%02ld\n",
1.1 deraadt 128: after.tv_sec, after.tv_usec/10000);
1.3 deraadt 129: fprintf(stderr, "user %9ld.%02ld\n",
1.1 deraadt 130: ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
1.3 deraadt 131: fprintf(stderr, "sys %9ld.%02ld\n",
1.1 deraadt 132: ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
133: } else {
134:
135: fprintf(stderr, "%9ld.%02ld real ",
136: after.tv_sec, after.tv_usec/10000);
137: fprintf(stderr, "%9ld.%02ld user ",
138: ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
139: fprintf(stderr, "%9ld.%02ld sys\n",
140: ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
141: }
142:
143: if (lflag) {
1.7 art 144: int hz;
1.1 deraadt 145: long ticks;
1.7 art 146: int mib[2];
147: struct clockinfo clkinfo;
148: size_t size;
149:
150: mib[0] = CTL_KERN;
151: mib[1] = KERN_CLOCKRATE;
152: size = sizeof(clkinfo);
153: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0)
154: err(1, "sysctl");
155:
156: hz = clkinfo.hz;
1.1 deraadt 157:
158: ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
159: hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
160:
161: fprintf(stderr, "%10ld %s\n",
162: ru.ru_maxrss, "maximum resident set size");
163: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0,
164: "average shared memory size");
165: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0,
166: "average unshared data size");
167: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0,
168: "average unshared stack size");
169: fprintf(stderr, "%10ld %s\n",
1.8 art 170: ru.ru_minflt, "minor page faults");
1.1 deraadt 171: fprintf(stderr, "%10ld %s\n",
1.8 art 172: ru.ru_majflt, "major page faults");
1.1 deraadt 173: fprintf(stderr, "%10ld %s\n",
174: ru.ru_nswap, "swaps");
175: fprintf(stderr, "%10ld %s\n",
176: ru.ru_inblock, "block input operations");
177: fprintf(stderr, "%10ld %s\n",
178: ru.ru_oublock, "block output operations");
179: fprintf(stderr, "%10ld %s\n",
180: ru.ru_msgsnd, "messages sent");
181: fprintf(stderr, "%10ld %s\n",
182: ru.ru_msgrcv, "messages received");
183: fprintf(stderr, "%10ld %s\n",
184: ru.ru_nsignals, "signals received");
185: fprintf(stderr, "%10ld %s\n",
186: ru.ru_nvcsw, "voluntary context switches");
187: fprintf(stderr, "%10ld %s\n",
188: ru.ru_nivcsw, "involuntary context switches");
189: }
190:
1.5 deraadt 191: if (exitonsig) {
1.6 millert 192: if (signal(exitonsig, SIG_DFL) == SIG_ERR)
1.5 deraadt 193: perror("signal");
194: else
1.6 millert 195: kill(getpid(), exitonsig);
1.5 deraadt 196: }
1.3 deraadt 197: exit(WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
1.11 mpech 198: }
199:
200: __dead void
201: usage()
202: {
203: extern char *__progname;
204:
205: (void)fprintf(stderr, "usage: %s [-lp] command\n", __progname);
206: exit(1);
1.1 deraadt 207: }
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