module Worker:Swith type value := Worker.t
Workers can be added and can become inactive. The worker scheduler
manage new workers, keep track of idle workers and remove inactive
workers.
type t
type value
val start : Store.t -> t Lwt.tstart s starts the event scheduler.val stop : t -> unit Lwt.tstop t stops the scheduler t.val list : t -> value listlist t lists the values which are being scheduled.val peek : t -> value optionpeel t picks a value if it is available.val peek_s : t -> value Lwt.tpeek_s t blocks until a value is available.