1 /***
2 This file is part of PulseAudio.
3
4 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
5
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
10
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <windows.h>
25
26 #include <pulse/xmalloc.h>
27 #include <pulsecore/macro.h>
28
29 #include "semaphore.h"
30
31 struct pa_semaphore {
32 HANDLE sema;
33 };
34
pa_semaphore_new(unsigned value)35 pa_semaphore* pa_semaphore_new(unsigned value) {
36 pa_semaphore *s;
37
38 s = pa_xnew(pa_semaphore, 1);
39
40 s->sema = CreateSemaphore(NULL, value, 32767, NULL);
41 pa_assert(s->sema != NULL);
42
43 return s;
44 }
45
pa_semaphore_free(pa_semaphore * s)46 void pa_semaphore_free(pa_semaphore *s) {
47 pa_assert(s);
48 CloseHandle(s->sema);
49 pa_xfree(s);
50 }
51
pa_semaphore_post(pa_semaphore * s)52 void pa_semaphore_post(pa_semaphore *s) {
53 pa_assert(s);
54 ReleaseSemaphore(s->sema, 1, NULL);
55 }
56
pa_semaphore_wait(pa_semaphore * s)57 void pa_semaphore_wait(pa_semaphore *s) {
58 pa_assert(s);
59 WaitForSingleObject(s->sema, INFINITE);
60 }
61