Fix the update system, based on funman patch + some modifications.

src/misc/update.c

@@ -1049,6 +1049,9 @@ update_t *__update_New( vlc_object_t *p_this )
     p_update->release.psz_url = NULL;
     p_update->release.psz_desc = NULL;
 
+    p_update->p_download = NULL;
+    p_update->p_check = NULL;
+
     p_update->p_pkey = NULL;
     vlc_gcrypt_init();
 
@@ -1065,6 +1068,21 @@ void update_Delete( update_t *p_update )
 {
     assert( p_update );
 
+    vlc_mutex_lock( &p_update->lock );
+
+    if( p_update->p_check )
+    {
+        assert( !p_update->p_download );
+        vlc_object_kill( p_update->p_check );
+        vlc_thread_join( p_update->p_check );
+    }
+    else if( p_update->p_download )
+    {
+        vlc_object_kill( p_update->p_download );
+        vlc_thread_join( p_update->p_download );
+    }
+
+    vlc_mutex_unlock( &p_update->lock );
     vlc_mutex_destroy( &p_update->lock );
 
     free( p_update->release.psz_url );
@@ -1336,19 +1354,7 @@ error:
     return false;
 }
 
-
-/**
- * Struct to launch the check in an other thread
- */
-typedef struct
-{
-    VLC_COMMON_MEMBERS
-    update_t *p_update;
-    void (*pf_callback)( void *, bool );
-    void *p_data;
-} update_check_thread_t;
-
-void update_CheckReal( update_check_thread_t *p_uct );
+static void update_CheckReal( update_check_thread_t *p_uct );
 
 /**
  * Check for updates
@@ -1367,6 +1373,7 @@ void update_Check( update_t *p_update, void (*pf_callback)( void*, bool ), void
     if( !p_uct ) return;
 
     p_uct->p_update = p_update;
+    p_update->p_check = p_uct;
     p_uct->pf_callback = pf_callback;
     p_uct->p_data = p_data;
 
@@ -1385,6 +1392,10 @@ void update_CheckReal( update_check_thread_t *p_uct )
 
     if( p_uct->pf_callback )
         (p_uct->pf_callback)( p_uct->p_data, b_ret );
+
+    p_uct->p_update->p_check = NULL;
+
+    vlc_object_release( p_uct );
 }
 
 /**
@@ -1425,18 +1436,7 @@ static char *size_str( long int l_size )
     return i_retval == -1 ? NULL : psz_tmp;
 }
 
-
-/**
- * Struct to launch the download in a thread
- */
-typedef struct
-{
-    VLC_COMMON_MEMBERS
-    update_t *p_update;
-    char *psz_destdir;
-} update_download_thread_t;
-
-void update_DownloadReal( update_download_thread_t *p_udt );
+static void update_DownloadReal( update_download_thread_t *p_udt );
 
 /**
  * Download the file given in the update_t
@@ -1455,13 +1455,14 @@ void update_Download( update_t *p_update, const char *psz_destdir )
         return;
 
     p_udt->p_update = p_update;
+    p_update->p_download = p_udt;
     p_udt->psz_destdir = psz_destdir ? strdup( psz_destdir ) : NULL;
 
     vlc_thread_create( p_udt, "download update", update_DownloadReal,
                        VLC_THREAD_PRIORITY_LOW, false );
 }
 
-void update_DownloadReal( update_download_thread_t *p_udt )
+static void update_DownloadReal( update_download_thread_t *p_udt )
 {
     int i_progress = 0;
     long int l_size;
@@ -1652,6 +1653,10 @@ end:
     free( psz_destfile );
     free( p_buffer );
     free( psz_size );
+
+    p_udt->p_update->p_download = NULL;
+
+    vlc_object_release( p_udt );
 }
 
 update_release_t *update_GetRelease( update_t *p_update )

src/misc/update.h

@@ -142,6 +142,26 @@ struct public_key_t
 
 typedef struct public_key_t public_key_t;
 
+/**
+ * Non blocking binary download
+ */
+typedef struct
+{
+    VLC_COMMON_MEMBERS
+    update_t *p_update;
+    char *psz_destdir;
+} update_download_thread_t;
+
+/**
+ * Non blocking update availability verification
+ */
+typedef struct
+{
+    VLC_COMMON_MEMBERS
+    update_t *p_update;
+    void (*pf_callback)( void *, bool );
+    void *p_data;
+} update_check_thread_t;
 /**
  * The update object. Stores (and caches) all information relative to updates
  */
@@ -151,5 +171,7 @@ struct update_t
     vlc_mutex_t lock;
     struct update_release_t release;    ///< Release (version)
     public_key_t *p_pkey;
+    update_download_thread_t *p_download;
+    update_check_thread_t *p_check;
 };