Annotation of src/usr.bin/time/time.c, Revision 1.21
1.21 ! deraadt 1: /* $OpenBSD: time.c,v 1.20 2015/01/16 06:40:13 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: #include <sys/time.h>
34: #include <sys/resource.h>
35: #include <sys/wait.h>
1.7 art 36: #include <sys/sysctl.h>
1.11 mpech 37:
38: #include <err.h>
39: #include <errno.h>
1.1 deraadt 40: #include <signal.h>
41: #include <stdio.h>
42: #include <stdlib.h>
43: #include <unistd.h>
44:
45: int lflag;
46: int portableflag;
47:
1.12 millert 48: __dead void usage(void);
1.11 mpech 49:
1.1 deraadt 50: int
1.15 deraadt 51: main(int argc, char *argv[])
1.1 deraadt 52: {
1.13 deraadt 53: pid_t pid;
1.1 deraadt 54: int ch, status;
55: struct timeval before, after;
56: struct rusage ru;
1.5 deraadt 57: int exitonsig = 0;
1.1 deraadt 58:
1.21 ! deraadt 59: if (pledge("stdio proc exec", NULL) == -1)
! 60: err(1, "pledge");
1.11 mpech 61:
62: while ((ch = getopt(argc, argv, "lp")) != -1) {
63: switch(ch) {
64: case 'l':
65: lflag = 1;
66: break;
1.1 deraadt 67: case 'p':
68: portableflag = 1;
69: break;
70: default:
1.11 mpech 71: usage();
72: /* NOTREACHED */
1.1 deraadt 73: }
1.11 mpech 74: }
1.1 deraadt 75:
1.11 mpech 76: argc -= optind;
1.1 deraadt 77: argv += optind;
1.16 grunk 78:
79: if (argc < 1)
1.11 mpech 80: usage();
1.1 deraadt 81:
82: gettimeofday(&before, (struct timezone *)NULL);
83: switch(pid = vfork()) {
84: case -1: /* error */
85: perror("time");
86: exit(1);
87: /* NOTREACHED */
88: case 0: /* child */
89: execvp(*argv, argv);
90: perror(*argv);
91: _exit((errno == ENOENT) ? 127 : 126);
92: /* NOTREACHED */
93: }
94:
95: /* parent */
96: (void)signal(SIGINT, SIG_IGN);
97: (void)signal(SIGQUIT, SIG_IGN);
1.3 deraadt 98: while (wait3(&status, 0, &ru) != pid)
99: ;
1.1 deraadt 100: gettimeofday(&after, (struct timezone *)NULL);
1.5 deraadt 101: if (WIFSIGNALED(status))
102: exitonsig = WTERMSIG(status);
1.1 deraadt 103: if (!WIFEXITED(status))
104: fprintf(stderr, "Command terminated abnormally.\n");
105: timersub(&after, &before, &after);
106:
107: if (portableflag) {
1.19 deraadt 108: fprintf(stderr, "real %9lld.%02ld\n",
109: (long long)after.tv_sec, after.tv_usec/10000);
110: fprintf(stderr, "user %9lld.%02ld\n",
111: (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
112: fprintf(stderr, "sys %9lld.%02ld\n",
113: (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
1.1 deraadt 114: } else {
115:
1.19 deraadt 116: fprintf(stderr, "%9lld.%02ld real ",
117: (long long)after.tv_sec, after.tv_usec/10000);
118: fprintf(stderr, "%9lld.%02ld user ",
119: (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
120: fprintf(stderr, "%9lld.%02ld sys\n",
121: (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
1.1 deraadt 122: }
123:
124: if (lflag) {
1.7 art 125: int hz;
1.1 deraadt 126: long ticks;
1.7 art 127: int mib[2];
128: struct clockinfo clkinfo;
129: size_t size;
130:
131: mib[0] = CTL_KERN;
132: mib[1] = KERN_CLOCKRATE;
133: size = sizeof(clkinfo);
134: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0)
135: err(1, "sysctl");
136:
137: hz = clkinfo.hz;
1.1 deraadt 138:
139: ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
140: hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
141:
142: fprintf(stderr, "%10ld %s\n",
143: ru.ru_maxrss, "maximum resident set size");
144: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0,
145: "average shared memory size");
146: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0,
147: "average unshared data size");
148: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0,
149: "average unshared stack size");
150: fprintf(stderr, "%10ld %s\n",
1.8 art 151: ru.ru_minflt, "minor page faults");
1.1 deraadt 152: fprintf(stderr, "%10ld %s\n",
1.8 art 153: ru.ru_majflt, "major page faults");
1.1 deraadt 154: fprintf(stderr, "%10ld %s\n",
155: ru.ru_nswap, "swaps");
156: fprintf(stderr, "%10ld %s\n",
157: ru.ru_inblock, "block input operations");
158: fprintf(stderr, "%10ld %s\n",
159: ru.ru_oublock, "block output operations");
160: fprintf(stderr, "%10ld %s\n",
161: ru.ru_msgsnd, "messages sent");
162: fprintf(stderr, "%10ld %s\n",
163: ru.ru_msgrcv, "messages received");
164: fprintf(stderr, "%10ld %s\n",
165: ru.ru_nsignals, "signals received");
166: fprintf(stderr, "%10ld %s\n",
167: ru.ru_nvcsw, "voluntary context switches");
168: fprintf(stderr, "%10ld %s\n",
169: ru.ru_nivcsw, "involuntary context switches");
170: }
171:
1.5 deraadt 172: if (exitonsig) {
1.6 millert 173: if (signal(exitonsig, SIG_DFL) == SIG_ERR)
1.5 deraadt 174: perror("signal");
175: else
1.6 millert 176: kill(getpid(), exitonsig);
1.5 deraadt 177: }
1.3 deraadt 178: exit(WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
1.11 mpech 179: }
180:
1.16 grunk 181: __dead void
1.15 deraadt 182: usage(void)
1.11 mpech 183: {
1.16 grunk 184: extern char *__progname;
1.11 mpech 185:
1.17 sobrado 186: (void)fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n",
187: __progname);
1.11 mpech 188: exit(1);
1.1 deraadt 189: }
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