Annotation of src/usr.bin/time/time.c, Revision 1.24
1.24 ! schwarze 1: /* $OpenBSD: time.c,v 1.23 2017/07/22 16:20:10 schwarze 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:
1.12 millert 45: __dead void usage(void);
1.11 mpech 46:
1.1 deraadt 47: int
1.15 deraadt 48: main(int argc, char *argv[])
1.1 deraadt 49: {
1.24 ! schwarze 50: struct rusage ru;
! 51: struct timespec before, after, during;
! 52: int ch, exitonsig, lflag, portableflag, status;
1.13 deraadt 53: pid_t pid;
1.1 deraadt 54:
1.21 deraadt 55: if (pledge("stdio proc exec", NULL) == -1)
56: err(1, "pledge");
1.24 ! schwarze 57:
! 58: exitonsig = lflag = portableflag = 0;
1.11 mpech 59:
60: while ((ch = getopt(argc, argv, "lp")) != -1) {
61: switch(ch) {
62: case 'l':
63: lflag = 1;
64: break;
1.1 deraadt 65: case 'p':
66: portableflag = 1;
67: break;
68: default:
1.11 mpech 69: usage();
70: /* NOTREACHED */
1.1 deraadt 71: }
1.11 mpech 72: }
1.1 deraadt 73:
1.11 mpech 74: argc -= optind;
1.1 deraadt 75: argv += optind;
1.16 grunk 76:
77: if (argc < 1)
1.11 mpech 78: usage();
1.1 deraadt 79:
1.22 tedu 80: clock_gettime(CLOCK_MONOTONIC, &before);
1.1 deraadt 81: switch(pid = vfork()) {
82: case -1: /* error */
83: perror("time");
84: exit(1);
85: /* NOTREACHED */
86: case 0: /* child */
87: execvp(*argv, argv);
88: perror(*argv);
89: _exit((errno == ENOENT) ? 127 : 126);
90: /* NOTREACHED */
91: }
92:
93: /* parent */
1.23 schwarze 94: signal(SIGINT, SIG_IGN);
95: signal(SIGQUIT, SIG_IGN);
1.3 deraadt 96: while (wait3(&status, 0, &ru) != pid)
97: ;
1.22 tedu 98: clock_gettime(CLOCK_MONOTONIC, &after);
1.5 deraadt 99: if (WIFSIGNALED(status))
100: exitonsig = WTERMSIG(status);
1.1 deraadt 101: if (!WIFEXITED(status))
102: fprintf(stderr, "Command terminated abnormally.\n");
1.22 tedu 103: timespecsub(&after, &before, &during);
1.1 deraadt 104:
105: if (portableflag) {
1.19 deraadt 106: fprintf(stderr, "real %9lld.%02ld\n",
1.22 tedu 107: (long long)during.tv_sec, during.tv_nsec/10000000);
1.19 deraadt 108: fprintf(stderr, "user %9lld.%02ld\n",
109: (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
110: fprintf(stderr, "sys %9lld.%02ld\n",
111: (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
1.1 deraadt 112: } else {
1.19 deraadt 113: fprintf(stderr, "%9lld.%02ld real ",
1.22 tedu 114: (long long)during.tv_sec, during.tv_nsec/10000000);
1.19 deraadt 115: fprintf(stderr, "%9lld.%02ld user ",
116: (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
117: fprintf(stderr, "%9lld.%02ld sys\n",
118: (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
1.1 deraadt 119: }
120:
121: if (lflag) {
1.7 art 122: int hz;
1.1 deraadt 123: long ticks;
1.7 art 124: int mib[2];
125: struct clockinfo clkinfo;
126: size_t size;
127:
128: mib[0] = CTL_KERN;
129: mib[1] = KERN_CLOCKRATE;
130: size = sizeof(clkinfo);
131: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0)
132: err(1, "sysctl");
133:
134: hz = clkinfo.hz;
1.1 deraadt 135:
136: ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
137: hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
138:
139: fprintf(stderr, "%10ld %s\n",
140: ru.ru_maxrss, "maximum resident set size");
141: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0,
142: "average shared memory size");
143: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0,
144: "average unshared data size");
145: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0,
146: "average unshared stack size");
147: fprintf(stderr, "%10ld %s\n",
1.8 art 148: ru.ru_minflt, "minor page faults");
1.1 deraadt 149: fprintf(stderr, "%10ld %s\n",
1.8 art 150: ru.ru_majflt, "major page faults");
1.1 deraadt 151: fprintf(stderr, "%10ld %s\n",
152: ru.ru_nswap, "swaps");
153: fprintf(stderr, "%10ld %s\n",
154: ru.ru_inblock, "block input operations");
155: fprintf(stderr, "%10ld %s\n",
156: ru.ru_oublock, "block output operations");
157: fprintf(stderr, "%10ld %s\n",
158: ru.ru_msgsnd, "messages sent");
159: fprintf(stderr, "%10ld %s\n",
160: ru.ru_msgrcv, "messages received");
161: fprintf(stderr, "%10ld %s\n",
162: ru.ru_nsignals, "signals received");
163: fprintf(stderr, "%10ld %s\n",
164: ru.ru_nvcsw, "voluntary context switches");
165: fprintf(stderr, "%10ld %s\n",
166: ru.ru_nivcsw, "involuntary context switches");
167: }
168:
1.5 deraadt 169: if (exitonsig) {
1.6 millert 170: if (signal(exitonsig, SIG_DFL) == SIG_ERR)
1.5 deraadt 171: perror("signal");
172: else
1.6 millert 173: kill(getpid(), exitonsig);
1.5 deraadt 174: }
1.3 deraadt 175: exit(WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
1.11 mpech 176: }
177:
1.16 grunk 178: __dead void
1.15 deraadt 179: usage(void)
1.11 mpech 180: {
1.23 schwarze 181: fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n",
182: getprogname());
1.11 mpech 183: exit(1);
1.1 deraadt 184: }
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