module ExecutorCompletionService: sig .. end
Helper entities for thread pool executors.
type t
The type of completion services, providing utilities to wait for
future completions.
val poll : t -> 'a Future.t option
Returns (and removes from the service) a completed task if any, or
returns None
.
val poll_time : t -> int64 -> TimeUnit.t -> 'a Future.t option
poll_time s t u
is similar to pool s
, except that the current
thread will at most wait for t
(time value whose unit is u
).
Raises Runtime.Interrupted
if the thread is interrupted.
val submit : t -> ('a -> 'b) -> 'a -> 'b Future.t
val take : t -> 'a Future.t
Waits for a task to complete, and returns it.
Raises Runtime.Interrupted
if the thread is interrupted.