xref: /openbsd-src/regress/lib/libc/stdio_threading/fopen/fopen_test.c (revision 83087275e8888ed7109e36d91357557af9d26270)
1 /*	$OpenBSD: fopen_test.c,v 1.2 2015/01/20 04:41:01 krw Exp $	*/
2 /*
3  * Copyright (c) 2008 Bret S. Lambert <blambert@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #include <stdio.h>
19 #include <pthread.h>
20 #include "local.h"
21 
22 int
writefn(void * cookie,const char * buf,int size)23 writefn(void *cookie, const char *buf, int size)
24 {
25 	return 0;
26 }
27 
28 void
fopen_thread(void * v)29 fopen_thread(void *v)
30 {
31 	FILE *file;
32 	int i;
33 
34 	for (i = 0; i < 4096; i++) {
35 		file = fwopen(&i, writefn);
36 		if (file != NULL) {
37 			fputc('0', file);
38 			pthread_yield();
39 			fclose(file);
40 		}
41 	}
42 }
43 
44 int
main(void)45 main(void)
46 {
47 	run_threads(fopen_thread, NULL);
48 	exit(0);
49 }
50