Import Upstream version 1.8.5
[hcoop/debian/openafs.git] / src / tests / test-parallel1.c
1 /*
2 * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
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.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifdef HAVE_CONFIG_H
35 #include <config.h>
36 #endif
37
38 #include <stdio.h>
39 #include <sys/stat.h>
40 #include <sys/types.h>
41 #include <sys/wait.h>
42 #include <sys/param.h>
43 #include <unistd.h>
44
45 #include <err.h>
46
47 #include <fcntl.h>
48
49 #define WORKER_TIMES 100
50 #define NUM_WORKER 10
51
52 static int
53 worker(int num)
54 {
55 int i, fd;
56
57 for (i = 0; i < WORKER_TIMES; i++) {
58 fd = open("foo", O_CREAT | O_RDWR, 0600);
59 if (fd >= 0) {
60 fchmod(fd, 0700);
61 close(fd);
62 }
63 unlink("foo");
64 if (i % 1000) {
65 printf(" %d", num);
66 fflush(stdout);
67 }
68 }
69 return 0;
70 }
71
72
73 int
74 main(int argc, char **argv)
75 {
76 int i, ret;
77
78
79 for (i = 0; i < NUM_WORKER; i++) {
80 int ret;
81
82 ret = fork();
83 switch (ret) {
84 case 0:
85 return worker(i);
86 case -1:
87 err(1, "fork");
88 }
89 }
90 i = NUM_WORKER;
91 while (i && wait(&ret)) {
92 i--;
93 if (ret)
94 err(1, "wait: %d", ret);
95 }
96 return 0;
97 }