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DEFINITIONS
This source file includes following definitions.
- sink
- waitall
- main
1 /*
2 * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
3 * The President and Fellows of Harvard College.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 /*
31 * kitchen.c
32 *
33 * Run a bunch of sinks (only).
34 *
35 * This tests concurrent read access to the console driver.
36 */
37
38 #include <unistd.h>
39 #include <err.h>
40
41 static char *sargv[2] = { (char *)"sink", NULL };
42
43 #define MAXPROCS 6
44 static int pids[MAXPROCS], npids;
45
46 static
47 void
48 sink(void)
49 {
50 int pid = fork();
51 switch (pid) {
52 case -1:
53 err(1, "fork");
54 case 0:
55 /* child */
56 execv("/testbin/sink", sargv);
57 err(1, "/testbin/sink");
58 default:
59 /* parent */
60 pids[npids++] = pid;
61 break;
62 }
63 }
64
65 static
66 void
67 waitall(void)
68 {
69 int i, status;
70 for (i=0; i<npids; i++) {
71 if (waitpid(pids[i], &status, 0)<0) {
72 warn("waitpid for %d", pids[i]);
73 }
74 else if (WIFSIGNALED(status)) {
75 warnx("pid %d: signal %d", pids[i], WTERMSIG(status));
76 }
77 else if (WEXITSTATUS(status) != 0) {
78 warnx("pid %d: exit %d", pids[i], WEXITSTATUS(status));
79 }
80 }
81 }
82
83
84 int
85 main(void)
86 {
87 sink();
88 sink();
89 sink();
90 sink();
91
92 waitall();
93
94 return 0;
95 }