From 772645922a450f5d366bd6e077a44582e7a7b79f Mon Sep 17 00:00:00 2001
From: Pierre Ossman <ossman@cendio.se>
Date: Mon, 11 Sep 2006 07:56:03 +0000
Subject: Fix up build structure for platform dependent modules. Also add
 implementation on Win32 for pa_once().

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1395 fefdeb5f-60dc-0310-8127-8f9354f1896f
---
 src/pulsecore/once-win32.c   | 67 ++++++++++++++++++++++++++++++++++++++++++++
 src/pulsecore/thread-win32.c | 35 ++++-------------------
 2 files changed, 73 insertions(+), 29 deletions(-)
 create mode 100644 src/pulsecore/once-win32.c

(limited to 'src/pulsecore')

diff --git a/src/pulsecore/once-win32.c b/src/pulsecore/once-win32.c
new file mode 100644
index 00000000..8b9282f4
--- /dev/null
+++ b/src/pulsecore/once-win32.c
@@ -0,0 +1,67 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+ 
+  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 <assert.h>
+#include <stdio.h>
+
+#include <windows.h>
+
+#include <pulsecore/mutex.h>
+
+#include "once.h"
+
+void pa_once(pa_once_t *control, pa_once_func_t func) {
+    HANDLE mutex;
+    char name[64];
+
+    assert(control);
+    assert(func);
+
+    /* Create the global mutex */
+    sprintf(name, "pulse%d", (int)GetCurrentProcessId());
+
+    mutex = CreateMutex(NULL, FALSE, name);
+    assert(mutex);
+
+    /* Create the local mutex */
+    WaitForSingleObject(mutex, INFINITE);
+    if (!control->mutex)
+        control->mutex = pa_mutex_new(1);
+    ReleaseMutex(mutex);
+
+    CloseHandle(mutex);
+
+    /* Execute function */
+    pa_mutex_lock(control->mutex);
+    if (!control->once_value) {
+        control->once_value = 1;
+        func();
+    }
+    pa_mutex_unlock(control->mutex); 
+
+    /* Caveat: We have to make sure that the once func has completed
+     * before returning, even if the once func is not actually
+     * executed by us. Hence the awkward locking. */
+}
diff --git a/src/pulsecore/thread-win32.c b/src/pulsecore/thread-win32.c
index ee61d85a..98ea0691 100644
--- a/src/pulsecore/thread-win32.c
+++ b/src/pulsecore/thread-win32.c
@@ -29,6 +29,7 @@
 
 #include <pulse/xmalloc.h>
 #include <pulsecore/log.h>
+#include <pulsecore/once.h>
 
 #include "thread.h"
 
@@ -50,9 +51,9 @@ struct pa_tls_monitor {
 };
 
 static pa_tls *thread_tls;
-static pa_thread_once_t thread_tls_once = PA_THREAD_ONCE_INIT;
+static pa_once_t thread_tls_once = PA_ONCE_INIT;
 static pa_tls *monitor_tls;
-static pa_thread_once_t monitor_tls_once = PA_THREAD_ONCE_INIT;
+static pa_once_t monitor_tls_once = PA_ONCE_INIT;
 
 static void thread_tls_once_func(void) {
     thread_tls = pa_tls_new(NULL);
@@ -63,7 +64,7 @@ static DWORD WINAPI internal_thread_func(LPVOID param) {
     pa_thread *t = param;
     assert(t);
 
-    pa_thread_once(&thread_tls_once, thread_tls_once_func);
+    pa_once(&thread_tls_once, thread_tls_once_func);
     pa_tls_set(thread_tls, t);
 
     t->thread_func(t->userdata);
@@ -119,7 +120,7 @@ int pa_thread_join(pa_thread *t) {
 }
 
 pa_thread* pa_thread_self(void) {
-    pa_thread_once(&thread_tls_once, thread_tls_once_func);
+    pa_once(&thread_tls_once, thread_tls_once_func);
     return pa_tls_get(thread_tls);
 }
 
@@ -127,30 +128,6 @@ void pa_thread_yield(void) {
     Sleep(0);
 }
 
-void pa_thread_once(pa_thread_once_t *control, pa_thread_once_func_t once_func) {
-    HANDLE mutex;
-    char name[64];
-
-    assert(control);
-    assert(once_func);
-
-    sprintf(name, "pulse%d", (int)GetCurrentProcessId());
-
-    mutex = CreateMutex(NULL, FALSE, name);
-    assert(mutex);
-
-    WaitForSingleObject(mutex, INFINITE);
-
-    if (*control == PA_THREAD_ONCE_INIT) {
-        *control = ~PA_THREAD_ONCE_INIT;
-        ReleaseMutex(mutex);
-        once_func();
-    } else
-        ReleaseMutex(mutex);
-
-    CloseHandle(mutex);
-}
-
 static void monitor_tls_once_func(void) {
     monitor_tls = pa_tls_new(NULL);
     assert(monitor_tls);
@@ -212,7 +189,7 @@ void *pa_tls_set(pa_tls *t, void *userdata) {
     if (t->free_func) {
         struct pa_tls_monitor *m;
 
-        pa_thread_once(&monitor_tls_once, monitor_tls_once_func);
+        pa_once(&monitor_tls_once, monitor_tls_once_func);
 
         m = pa_tls_get(monitor_tls);
         if (!m) {
-- 
cgit