u32 pool_index, u32 timer_id, u64 interval);
void TW (tw_timer_stop) (TWT (tw_timer_wheel) * tw, u32 handle);
+int TW (tw_timer_handle_is_free) (TWT (tw_timer_wheel) * tw, u32 handle);
+void TW (tw_timer_update) (TWT (tw_timer_wheel) * tw, u32 handle,
+ u64 interval);
void TW (tw_timer_wheel_init) (TWT (tw_timer_wheel) * tw,
void *expired_timer_callback,