package duppy

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Asynchronous task module * * This module implements an asychronous API to Duppy.scheduler * It allows to create a task that will run and then go to sleep.

type t
exception Stopped

Exception raised when trying to wake_up a task * that has been previously stopped

val add : priority:'a -> 'a scheduler -> (unit -> float) -> t

add ~priority s f creates an asynchronous task in s with * priority priority. * * The task executes the function f. * If the task returns a positive float, the function will be executed * again after this delay. Otherwise it goes to sleep, and * you can use wake_up to resume the task and execute f again. * Only a single call to f is done at each time. * Multiple wake_up while previous task has not * finished will result in sequentialized calls to f.

val wake_up : t -> unit

Wake up an asynchronous task. * Raises Stopped if the task has been stopped.

val stop : t -> unit

Stop and remove the asynchronous task. Doesn't quit a running task. * Raises Stopped if the task has been stopped.

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