Platform dependent semaphore implementation for Windows.

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1929 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/pulsecore/semaphore-win32.c

@@ -0,0 +1,65 @@
+/* $Id: mutex-win32.c 1426 2007-02-13 15:35:19Z ossman $ */
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <windows.h>
+
+#include <pulse/xmalloc.h>
+#include <pulsecore/macro.h>
+
+#include "semaphore.h"
+
+struct pa_semaphore
+{
+    HANDLE sema;
+};
+
+pa_semaphore* pa_semaphore_new(unsigned value) {
+    pa_semaphore *s;
+
+    s = pa_xnew(pa_semaphore, 1);
+
+    s->sema = CreateSemaphore(NULL, value, 32767, NULL);
+    pa_assert(s->sema != NULL);
+
+    return s;
+}
+
+void pa_semaphore_free(pa_semaphore *s) {
+    pa_assert(s);
+    CloseHandle(s->sema);
+    pa_xfree(s);
+}
+
+void pa_semaphore_post(pa_semaphore *s) {
+    pa_assert(s);
+    ReleaseSemaphore(s->sema, 1, NULL);
+}
+
+void pa_semaphore_wait(pa_semaphore *s) {
+    pa_assert(s);
+    WaitForSingleObject(s->sema, INFINITE);
+}