Initialize messages stacks inside the message bank

src/libvlc.h

@@ -95,21 +95,9 @@ void msg_Flush   (libvlc_int_t *);
 void msg_Destroy (libvlc_int_t *);
 
 /** Internal message stack context */
-typedef struct
-{
-    int i_code;
-    char * psz_message;
-} msg_context_t;
-
 void msg_StackSet ( int, const char*, ... );
 void msg_StackAdd ( const char*, ... );
 const char* msg_StackMsg ( void );
-/** The global thread var for msg stack context
- *  We store this as a static global variable so we don't need a vlc_object_t
- *  everywhere.
- *  This key is created in vlc_threads_init and is therefore ready to use at
- *  the very beginning of the universe */
-extern vlc_threadvar_t msg_context_global_key;
 void msg_StackDestroy (void *);
 
 /*

src/misc/messages.c

@@ -55,6 +55,15 @@
 #include <vlc_charset.h>
 #include "../libvlc.h"
 
+typedef struct
+{
+    int i_code;
+    char * psz_message;
+} msg_context_t;
+
+static vlc_threadvar_t msg_context;
+static uintptr_t banks = 0;
+
 /*****************************************************************************
  * Local macros
  *****************************************************************************/
@@ -100,6 +109,11 @@ void msg_Create (libvlc_int_t *p_libvlc)
                     CREATE_ALWAYS, 0, NULL );
     SetFilePointer( QUEUE.logfile, 0, NULL, FILE_END );
 #endif
+
+    vlc_mutex_t *lock = var_AcquireMutex( "msg-stack" );
+    if( banks++ == 0 )
+        vlc_threadvar_create( &msg_context, NULL );
+    vlc_mutex_unlock( lock );
 }
 
 /**
@@ -129,6 +143,11 @@ void msg_Destroy (libvlc_int_t *p_libvlc)
 
     FlushMsg( &QUEUE );
 
+    vlc_mutex_t *lock = var_AcquireMutex( "msg-stack" );
+    if( --banks == 0 )
+        vlc_threadvar_delete( &msg_context );
+    vlc_mutex_unlock( lock );
+
 #ifdef UNDER_CE
     CloseHandle( QUEUE.logfile );
 #endif
@@ -608,12 +627,12 @@ static void PrintMsg ( vlc_object_t * p_this, msg_item_t * p_item )
 
 static msg_context_t* GetContext(void)
 {
-    msg_context_t *p_ctx = vlc_threadvar_get( &msg_context_global_key );
+    msg_context_t *p_ctx = vlc_threadvar_get( &msg_context );
     if( p_ctx == NULL )
     {
         MALLOC_NULL( p_ctx, msg_context_t );
         p_ctx->psz_message = NULL;
-        vlc_threadvar_set( &msg_context_global_key, p_ctx );
+        vlc_threadvar_set( &msg_context, p_ctx );
     }
     return p_ctx;
 }

src/misc/threads.c

@@ -66,8 +66,6 @@ libvlc_global_data_t *vlc_global( void )
     return p_root;
 }
 
-vlc_threadvar_t msg_context_global_key;
-
 #if defined(LIBVLC_USE_PTHREAD)
 static inline unsigned long vlc_threadid (void)
 {
@@ -178,7 +176,6 @@ int vlc_threads_init( void )
         }
 
         /* We should be safe now. Do all the initialization stuff we want. */
-        vlc_threadvar_create( &msg_context_global_key, msg_StackDestroy );
 #ifndef LIBVLC_USE_PTHREAD_CANCEL
         vlc_threadvar_create( &cancel_key, free );
 #endif
@@ -214,7 +211,6 @@ void vlc_threads_end( void )
 #ifndef LIBVLC_USE_PTHREAD
         vlc_threadvar_delete( &cancel_key );
 #endif
-        vlc_threadvar_delete( &msg_context_global_key );
     }
     i_initializations--;