Remove mutex names, fixes #722

Named mutexes are used for inter-process synchronization, using them to synchronize threads of a single process is just begging for trouble when running multiple instances of the application.

src/include/86box/plat.h

@@ -148,7 +148,7 @@ extern void	thread_reset_event(event_t *arg);
 extern int	thread_wait_event(event_t *arg, int timeout);
 extern void	thread_destroy_event(event_t *arg);
 
-extern mutex_t	*thread_create_mutex(wchar_t *name);
+extern mutex_t	*thread_create_mutex(void);
 extern void	thread_close_mutex(mutex_t *arg);
 extern int	thread_wait_mutex(mutex_t *arg);
 extern int	thread_release_mutex(mutex_t *mutex);

src/network/network.c

@@ -313,7 +313,7 @@ network_reset(void)
     /* If no active card, we're done. */
     if ((network_type==NET_TYPE_NONE) || (network_card==0)) return;
 
-    network_mutex = thread_create_mutex(L"VARCem.NetMutex");
+    network_mutex = thread_create_mutex();
 
     /* Initialize the platform module. */
     switch(network_type) {

src/video/vid_mga.c

@@ -4997,7 +4997,7 @@ mystique_init(const device_t *info)
     mystique->wake_fifo_thread = thread_create_event();
     mystique->fifo_not_full_event = thread_create_event();
     mystique->fifo_thread = thread_create(fifo_thread, mystique);
-    mystique->dma.lock = thread_create_mutex(L"86Box.MGAMutex");
+    mystique->dma.lock = thread_create_mutex();
 
     timer_add(&mystique->wake_timer, mystique_wake_timer, (void *)mystique, 0);
     timer_add(&mystique->softrap_pending_timer, mystique_softrap_pending_timer, (void *)mystique, 1);

src/win/win_thread.c

@@ -132,9 +132,9 @@ thread_destroy_event(event_t *arg)
 
 
 mutex_t *
-thread_create_mutex(wchar_t *name)
+thread_create_mutex(void)
 {
-    return((mutex_t*)CreateMutex(NULL, FALSE, name));
+    return((mutex_t*)CreateMutex(NULL, FALSE, NULL));
 }
 
 

src/win/win_ui.c

@@ -962,7 +962,7 @@ ui_init(int nCmdShow)
      * Before we can create the Render window, we first have
      * to prepare some other things that it depends on.
      */
-    ghMutex = CreateMutex(NULL, FALSE, L"86Box.BlitMutex");
+    ghMutex = CreateMutex(NULL, FALSE, NULL);
 
     /* Create the Machine Rendering window. */
     hwndRender = CreateWindow(L"STATIC", NULL, WS_CHILD|SS_BITMAP,