Sel.EventThe type of events and operations (setting priority, cancelling, ...)
val pp : (Format.formatter -> 'a -> unit) -> Format.formatter -> 'a t -> unitpretty printer
val get_cancellation_handle : 'e t -> cancellation_handlein order to cancel an event, one has to store its cancellation handle
val cancel : cancellation_handle -> unita cancelled event is automatically removed from the todo set