Annotation of src/usr.bin/time/time.c, Revision 1.16
1.16 ! grunk 1: /* $OpenBSD: time.c,v 1.15 2003/06/10 22:20:53 deraadt 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.
1.14 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: static char copyright[] =
35: "@(#) Copyright (c) 1987, 1988, 1993\n\
36: The Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
42: #endif
1.16 ! grunk 43: static char rcsid[] = "$OpenBSD: time.c,v 1.15 2003/06/10 22:20:53 deraadt Exp $";
1.1 deraadt 44: #endif /* not lint */
45:
1.7 art 46: #include <sys/param.h>
1.1 deraadt 47: #include <sys/time.h>
48: #include <sys/resource.h>
49: #include <sys/wait.h>
1.7 art 50: #include <sys/sysctl.h>
1.11 mpech 51:
52: #include <err.h>
53: #include <errno.h>
1.1 deraadt 54: #include <signal.h>
55: #include <stdio.h>
56: #include <stdlib.h>
57: #include <unistd.h>
58:
59: int lflag;
60: int portableflag;
61:
1.12 millert 62: __dead void usage(void);
1.11 mpech 63:
1.1 deraadt 64: int
1.15 deraadt 65: main(int argc, char *argv[])
1.1 deraadt 66: {
1.13 deraadt 67: pid_t pid;
1.1 deraadt 68: int ch, status;
69: struct timeval before, after;
70: struct rusage ru;
1.5 deraadt 71: int exitonsig = 0;
1.1 deraadt 72:
1.11 mpech 73:
74: while ((ch = getopt(argc, argv, "lp")) != -1) {
75: switch(ch) {
76: case 'l':
77: lflag = 1;
78: break;
1.1 deraadt 79: case 'p':
80: portableflag = 1;
81: break;
82: default:
1.11 mpech 83: usage();
84: /* NOTREACHED */
1.1 deraadt 85: }
1.11 mpech 86: }
1.1 deraadt 87:
1.11 mpech 88: argc -= optind;
1.1 deraadt 89: argv += optind;
1.16 ! grunk 90:
! 91: if (argc < 1)
1.11 mpech 92: usage();
1.1 deraadt 93:
94: gettimeofday(&before, (struct timezone *)NULL);
95: switch(pid = vfork()) {
96: case -1: /* error */
97: perror("time");
98: exit(1);
99: /* NOTREACHED */
100: case 0: /* child */
101: execvp(*argv, argv);
102: perror(*argv);
103: _exit((errno == ENOENT) ? 127 : 126);
104: /* NOTREACHED */
105: }
106:
107: /* parent */
108: (void)signal(SIGINT, SIG_IGN);
109: (void)signal(SIGQUIT, SIG_IGN);
1.3 deraadt 110: while (wait3(&status, 0, &ru) != pid)
111: ;
1.1 deraadt 112: gettimeofday(&after, (struct timezone *)NULL);
1.5 deraadt 113: if (WIFSIGNALED(status))
114: exitonsig = WTERMSIG(status);
1.1 deraadt 115: if (!WIFEXITED(status))
116: fprintf(stderr, "Command terminated abnormally.\n");
117: timersub(&after, &before, &after);
118:
119: if (portableflag) {
1.16 ! grunk 120: fprintf(stderr, "real %9ld.%02ld\n",
1.1 deraadt 121: after.tv_sec, after.tv_usec/10000);
1.3 deraadt 122: fprintf(stderr, "user %9ld.%02ld\n",
1.1 deraadt 123: ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
1.3 deraadt 124: fprintf(stderr, "sys %9ld.%02ld\n",
1.1 deraadt 125: ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
126: } else {
127:
1.16 ! grunk 128: fprintf(stderr, "%9ld.%02ld real ",
1.1 deraadt 129: after.tv_sec, after.tv_usec/10000);
130: fprintf(stderr, "%9ld.%02ld user ",
131: ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
132: fprintf(stderr, "%9ld.%02ld sys\n",
133: ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
134: }
135:
136: if (lflag) {
1.7 art 137: int hz;
1.1 deraadt 138: long ticks;
1.7 art 139: int mib[2];
140: struct clockinfo clkinfo;
141: size_t size;
142:
143: mib[0] = CTL_KERN;
144: mib[1] = KERN_CLOCKRATE;
145: size = sizeof(clkinfo);
146: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0)
147: err(1, "sysctl");
148:
149: hz = clkinfo.hz;
1.1 deraadt 150:
151: ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
152: hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
153:
154: fprintf(stderr, "%10ld %s\n",
155: ru.ru_maxrss, "maximum resident set size");
156: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0,
157: "average shared memory size");
158: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0,
159: "average unshared data size");
160: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0,
161: "average unshared stack size");
162: fprintf(stderr, "%10ld %s\n",
1.8 art 163: ru.ru_minflt, "minor page faults");
1.1 deraadt 164: fprintf(stderr, "%10ld %s\n",
1.8 art 165: ru.ru_majflt, "major page faults");
1.1 deraadt 166: fprintf(stderr, "%10ld %s\n",
167: ru.ru_nswap, "swaps");
168: fprintf(stderr, "%10ld %s\n",
169: ru.ru_inblock, "block input operations");
170: fprintf(stderr, "%10ld %s\n",
171: ru.ru_oublock, "block output operations");
172: fprintf(stderr, "%10ld %s\n",
173: ru.ru_msgsnd, "messages sent");
174: fprintf(stderr, "%10ld %s\n",
175: ru.ru_msgrcv, "messages received");
176: fprintf(stderr, "%10ld %s\n",
177: ru.ru_nsignals, "signals received");
178: fprintf(stderr, "%10ld %s\n",
179: ru.ru_nvcsw, "voluntary context switches");
180: fprintf(stderr, "%10ld %s\n",
181: ru.ru_nivcsw, "involuntary context switches");
182: }
183:
1.5 deraadt 184: if (exitonsig) {
1.6 millert 185: if (signal(exitonsig, SIG_DFL) == SIG_ERR)
1.5 deraadt 186: perror("signal");
187: else
1.6 millert 188: kill(getpid(), exitonsig);
1.5 deraadt 189: }
1.3 deraadt 190: exit(WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
1.11 mpech 191: }
192:
1.16 ! grunk 193: __dead void
1.15 deraadt 194: usage(void)
1.11 mpech 195: {
1.16 ! grunk 196: extern char *__progname;
1.11 mpech 197:
198: (void)fprintf(stderr, "usage: %s [-lp] command\n", __progname);
199: exit(1);
1.1 deraadt 200: }
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