1 /*
2 * once1.c
3 *
4 *
5 * --------------------------------------------------------------------------
6 *
7 * Pthreads-win32 - POSIX Threads Library for Win32
8 * Copyright(C) 1998 John E. Bossom
9 * Copyright(C) 1999,2005 Pthreads-win32 contributors
10 *
11 * Contact Email: rpj@callisto.canberra.edu.au
12 *
13 * The current list of contributors is contained
14 * in the file CONTRIBUTORS included with the source
15 * code distribution. The list can also be seen at the
16 * following World Wide Web location:
17 * http://sources.redhat.com/pthreads-win32/contributors.html
18 *
19 * This library is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU Lesser General Public
21 * License as published by the Free Software Foundation; either
22 * version 2 of the License, or (at your option) any later version.
23 *
24 * This library is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * Lesser General Public License for more details.
28 *
29 * You should have received a copy of the GNU Lesser General Public
30 * License along with this library in the file COPYING.LIB;
31 * if not, write to the Free Software Foundation, Inc.,
32 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
33 *
34 * --------------------------------------------------------------------------
35 *
36 * Create a static pthread_once and test that it calls myfunc once.
37 *
38 * Depends on API functions:
39 * pthread_once()
40 * pthread_create()
41 */
42
43 #include "test.h"
44
45 pthread_once_t once = PTHREAD_ONCE_INIT;
46
47 static int washere = 0;
48
49 void
myfunc(void)50 myfunc(void)
51 {
52 washere++;
53 }
54
55 void *
mythread(void * arg)56 mythread(void * arg)
57 {
58 assert(pthread_once(&once, myfunc) == 0);
59
60 return 0;
61 }
62
63 int
main()64 main()
65 {
66 pthread_t t1, t2;
67
68 assert(pthread_create(&t1, NULL, mythread, NULL) == 0);
69
70 assert(pthread_create(&t2, NULL, mythread, NULL) == 0);
71
72 Sleep(2000);
73
74 assert(washere == 1);
75
76 return 0;
77 }
78