xref: /openbsd-src/regress/lib/libc/stdio_threading/fopen/fopen_test.c (revision 91f110e064cd7c194e59e019b83bb7496c1c84d4)
1 /*
2  * Copyright (c) 2008 Bret S. Lambert <blambert@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <stdio.h>
18 #include <pthread.h>
19 #include "local.h"
20 
21 int
22 writefn(void *cookie, const char *buf, int size)
23 {
24 	return 0;
25 }
26 
27 void
28 fopen_thread(void *v)
29 {
30 	FILE *file;
31 	int i;
32 
33 	for (i = 0; i < 4096; i++) {
34 		file = fwopen(&i, writefn);
35 		if (file != NULL) {
36 			fputc('0', file);
37 			pthread_yield();
38 			fclose(file);
39 		}
40 	}
41 }
42 
43 int
44 main(void)
45 {
46 	run_threads(fopen_thread, NULL);
47 	exit(0);
48 }
49