event_base_priority_init Set the number of event priority levels &reftitle.description; boolevent_base_priority_init resourceevent_base intnpriorities Sets the number of different event priority levels. By default all events are scheduled with the same priority (npriorities/2). Using event_base_priority_init you can change the number of event priority levels and then set a desired priority for each event. &reftitle.parameters; event_base Valid event base resource. npriorities The number of event priority levels. &reftitle.returnvalues; event_base_priority_init returns &true; on success or &false; on error.