+void app_worker_add_event (app_worker_t *app_wrk, session_t *s,
+ session_evt_type_t evt_type);
+void app_worker_add_event_custom (app_worker_t *app_wrk, u32 thread_index,
+ session_event_t *evt);
+int app_wrk_flush_wrk_events (app_worker_t *app_wrk, u32 thread_index);
+void app_worker_del_all_events (app_worker_t *app_wrk);