+ else {
+ _db_thread_end();
+ return NULL;
+ }
+
+ /*
+ * Request processing loop
+ */
+ while(1){
+ pthread_mutex_lock( &database.mux );
+
+ if( database.kill ){
+ pthread_mutex_unlock( &database.mux );
+ _db_thread_end();
+ break;
+ }
+
+ u32 processed = 0;
+
+ for( u32 i=0; i<16; i ++ ){
+ db_request *req = NULL;
+ if( database.queue.tail ){
+ req = (db_request *)database.queue.tail->data;
+ pthread_mutex_unlock( &database.mux );
+ }
+ else{
+ pthread_mutex_unlock( &database.mux );
+ break;
+ }
+
+ req->handler( req );
+ processed ++;
+
+ pthread_mutex_lock( &database.mux );
+ vg_queue_pop( &database.queue );
+ }
+
+ if( processed )
+ vg_low( "Processed %u database requests.\n", processed );
+
+ usleep(50000);
+ }
+
+ vg_low( "Database thread terminates.\n" );
+ return NULL;
+}
+
+/*
+ * Create database connection and users table
+ */
+static int db_init(void){
+ database.queue.buffer =
+ (u8 *)vg_linear_alloc( vg_mem.rtmemory, DB_REQUEST_BUFFER_SIZE ),
+ database.queue.size = DB_REQUEST_BUFFER_SIZE;
+
+ if( pthread_mutex_init( &database.mux, NULL ) )
+ return 0;
+
+ if( pthread_create( &database.thread, NULL, db_loop, NULL ) )
+ return 0;
+
+ return 1;
+}
+
+static int db_killed(void){
+ pthread_mutex_lock( &database.mux );
+ int result = database.kill;
+ pthread_mutex_unlock( &database.mux );
+ return result;
+}
+
+static void db_kill(void){
+ pthread_mutex_lock( &database.mux );
+ database.kill = 1;
+ pthread_mutex_unlock( &database.mux );
+ pthread_join( database.thread, NULL );