double (*action_get_start_time) (surf_action_t action); /**< Return the start time of an action */
double (*action_get_finish_time) (surf_action_t action); /**< Return the finish time of an action */
- int (*action_unref) (surf_action_t action); /**< Specify that we don't use that action anymore */
+ int (*action_unref) (surf_action_t action); /**< Specify that we don't use that action anymore. Returns true if the action was destroyed and false if someone still has references on it. */
void (*action_cancel) (surf_action_t action); /**< Cancel a running action */
void (*action_recycle) (surf_action_t action); /**< Recycle an action */
void (*action_data_set) (surf_action_t action, void *data); /**< Set the user data of an action */
