Annotation of src/usr.bin/time/time.c, Revision 1.25
1.25 ! schwarze 1: /* $OpenBSD: time.c,v 1.24 2017/07/22 17:01:09 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();
1.1 deraadt 70: }
1.11 mpech 71: }
1.1 deraadt 72:
1.11 mpech 73: argc -= optind;
1.1 deraadt 74: argv += optind;
1.16 grunk 75:
76: if (argc < 1)
1.11 mpech 77: usage();
1.1 deraadt 78:
1.22 tedu 79: clock_gettime(CLOCK_MONOTONIC, &before);
1.1 deraadt 80: switch(pid = vfork()) {
81: case -1: /* error */
1.25 ! schwarze 82: warn("fork");
! 83: return 1;
1.1 deraadt 84: case 0: /* child */
85: execvp(*argv, argv);
1.25 ! schwarze 86: warn("%s", *argv);
1.1 deraadt 87: _exit((errno == ENOENT) ? 127 : 126);
88: }
89:
90: /* parent */
1.23 schwarze 91: signal(SIGINT, SIG_IGN);
92: signal(SIGQUIT, SIG_IGN);
1.3 deraadt 93: while (wait3(&status, 0, &ru) != pid)
94: ;
1.22 tedu 95: clock_gettime(CLOCK_MONOTONIC, &after);
1.5 deraadt 96: if (WIFSIGNALED(status))
97: exitonsig = WTERMSIG(status);
1.1 deraadt 98: if (!WIFEXITED(status))
99: fprintf(stderr, "Command terminated abnormally.\n");
1.22 tedu 100: timespecsub(&after, &before, &during);
1.1 deraadt 101:
102: if (portableflag) {
1.19 deraadt 103: fprintf(stderr, "real %9lld.%02ld\n",
1.22 tedu 104: (long long)during.tv_sec, during.tv_nsec/10000000);
1.19 deraadt 105: fprintf(stderr, "user %9lld.%02ld\n",
106: (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
107: fprintf(stderr, "sys %9lld.%02ld\n",
108: (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
1.1 deraadt 109: } else {
1.19 deraadt 110: fprintf(stderr, "%9lld.%02ld real ",
1.22 tedu 111: (long long)during.tv_sec, during.tv_nsec/10000000);
1.19 deraadt 112: fprintf(stderr, "%9lld.%02ld user ",
113: (long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
114: fprintf(stderr, "%9lld.%02ld sys\n",
115: (long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
1.1 deraadt 116: }
117:
118: if (lflag) {
1.7 art 119: int hz;
1.1 deraadt 120: long ticks;
1.7 art 121: int mib[2];
122: struct clockinfo clkinfo;
123: size_t size;
124:
125: mib[0] = CTL_KERN;
126: mib[1] = KERN_CLOCKRATE;
127: size = sizeof(clkinfo);
128: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0)
129: err(1, "sysctl");
130:
131: hz = clkinfo.hz;
1.1 deraadt 132:
133: ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
134: hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
135:
136: fprintf(stderr, "%10ld %s\n",
137: ru.ru_maxrss, "maximum resident set size");
138: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_ixrss / ticks : 0,
139: "average shared memory size");
140: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_idrss / ticks : 0,
141: "average unshared data size");
142: fprintf(stderr, "%10ld %s\n", ticks ? ru.ru_isrss / ticks : 0,
143: "average unshared stack size");
144: fprintf(stderr, "%10ld %s\n",
1.8 art 145: ru.ru_minflt, "minor page faults");
1.1 deraadt 146: fprintf(stderr, "%10ld %s\n",
1.8 art 147: ru.ru_majflt, "major page faults");
1.1 deraadt 148: fprintf(stderr, "%10ld %s\n",
149: ru.ru_nswap, "swaps");
150: fprintf(stderr, "%10ld %s\n",
151: ru.ru_inblock, "block input operations");
152: fprintf(stderr, "%10ld %s\n",
153: ru.ru_oublock, "block output operations");
154: fprintf(stderr, "%10ld %s\n",
155: ru.ru_msgsnd, "messages sent");
156: fprintf(stderr, "%10ld %s\n",
157: ru.ru_msgrcv, "messages received");
158: fprintf(stderr, "%10ld %s\n",
159: ru.ru_nsignals, "signals received");
160: fprintf(stderr, "%10ld %s\n",
161: ru.ru_nvcsw, "voluntary context switches");
162: fprintf(stderr, "%10ld %s\n",
163: ru.ru_nivcsw, "involuntary context switches");
164: }
165:
1.5 deraadt 166: if (exitonsig) {
1.6 millert 167: if (signal(exitonsig, SIG_DFL) == SIG_ERR)
1.25 ! schwarze 168: return 128 + exitonsig;
1.5 deraadt 169: else
1.25 ! schwarze 170: raise(exitonsig);
1.5 deraadt 171: }
1.25 ! schwarze 172: return WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE;
1.11 mpech 173: }
174:
1.16 grunk 175: __dead void
1.15 deraadt 176: usage(void)
1.11 mpech 177: {
1.23 schwarze 178: fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n",
179: getprogname());
1.11 mpech 180: exit(1);
1.1 deraadt 181: }
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