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1.1 root 1: /*
2: * Copyright (c) 1987, 1988 The Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms are permitted
6: * provided that: (1) source distributions retain this entire copyright
7: * notice and comment, and (2) distributions including binaries display
8: * the following acknowledgement: ``This product includes software
9: * developed by the University of California, Berkeley and its contributors''
10: * in the documentation or other materials provided with the distribution
11: * and in all advertising materials mentioning features or use of this
12: * software. Neither the name of the University nor the names of its
13: * contributors may be used to endorse or promote products derived
14: * from this software without specific prior written permission.
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
16: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18: */
19:
20: #ifndef lint
21: char copyright[] =
22: "@(#) Copyright (c) 1987, 1988 The Regents of the University of California.\n\
23: All rights reserved.\n";
24: #endif /* not lint */
25:
26: #ifndef lint
27: static char sccsid[] = "@(#)time.c 4.9 (Berkeley) 6/1/90";
28: #endif /* not lint */
29:
30: #include <sys/types.h>
31: #include <sys/time.h>
32: #include <sys/resource.h>
33: #include <sys/signal.h>
34: #include <stdio.h>
35:
36: main(argc, argv)
37: int argc;
38: char **argv;
39: {
40: extern int optind;
41: register int pid;
42: int ch, status, lflag;
43: struct timeval before, after;
44: struct rusage ru;
45:
46: lflag = 0;
47: while ((ch = getopt(argc, argv, "l")) != EOF)
48: switch((char)ch) {
49: case 'l':
50: lflag = 1;
51: break;
52: case '?':
53: default:
54: fprintf(stderr, "usage: time [-l] command.\n");
55: exit(1);
56: }
57:
58: if (!(argc -= optind))
59: exit(0);
60: argv += optind;
61:
62: gettimeofday(&before, (struct timezone *)NULL);
63: switch(pid = vfork()) {
64: case -1: /* error */
65: perror("time");
66: exit(1);
67: /* NOTREACHED */
68: case 0: /* child */
69: execvp(*argv, argv);
70: perror(*argv);
71: _exit(1);
72: /* NOTREACHED */
73: }
74: /* parent */
75: (void)signal(SIGINT, SIG_IGN);
76: (void)signal(SIGQUIT, SIG_IGN);
77: while (wait3(&status, 0, &ru) != pid); /* XXX use waitpid */
78: gettimeofday(&after, (struct timezone *)NULL);
79: if (status&0377)
80: fprintf(stderr, "Command terminated abnormally.\n");
81: after.tv_sec -= before.tv_sec;
82: after.tv_usec -= before.tv_usec;
83: if (after.tv_usec < 0)
84: after.tv_sec--, after.tv_usec += 1000000;
85: fprintf(stderr, "%9ld.%02ld real ", after.tv_sec, after.tv_usec/10000);
86: fprintf(stderr, "%9ld.%02ld user ",
87: ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
88: fprintf(stderr, "%9ld.%02ld sys\n",
89: ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
90: if (lflag) {
91: int hz = 100; /* XXX */
92: long ticks;
93:
94: ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
95: hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
96: fprintf(stderr, "%10ld %s\n",
97: ru.ru_maxrss, "maximum resident set size");
98: fprintf(stderr, "%10ld %s\n",
99: ru.ru_ixrss / ticks, "average shared memory size");
100: fprintf(stderr, "%10ld %s\n",
101: ru.ru_idrss / ticks, "average unshared data size");
102: fprintf(stderr, "%10ld %s\n",
103: ru.ru_isrss / ticks, "average unshared stack size");
104: fprintf(stderr, "%10ld %s\n",
105: ru.ru_minflt, "page reclaims");
106: fprintf(stderr, "%10ld %s\n",
107: ru.ru_majflt, "page faults");
108: fprintf(stderr, "%10ld %s\n",
109: ru.ru_nswap, "swaps");
110: fprintf(stderr, "%10ld %s\n",
111: ru.ru_inblock, "block input operations");
112: fprintf(stderr, "%10ld %s\n",
113: ru.ru_oublock, "block output operations");
114: fprintf(stderr, "%10ld %s\n",
115: ru.ru_msgsnd, "messages sent");
116: fprintf(stderr, "%10ld %s\n",
117: ru.ru_msgrcv, "messages received");
118: fprintf(stderr, "%10ld %s\n",
119: ru.ru_nsignals, "signals received");
120: fprintf(stderr, "%10ld %s\n",
121: ru.ru_nvcsw, "voluntary context switches");
122: fprintf(stderr, "%10ld %s\n",
123: ru.ru_nivcsw, "involuntary context switches");
124: }
125: exit (status>>8);
126: }
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