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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2011, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.concurrent
import scala.util.Duration
/** A service for scheduling tasks and thunks for one-time, or periodic execution.
*/
trait Scheduler {
/** Schedules a thunk for repeated execution with an initial delay and a frequency.
*
* @param delay the initial delay after which the thunk should be executed
* the first time
* @param frequency the frequency with which the thunk should be executed,
* as a time period between subsequent executions
*/
def schedule(delay: Duration, frequency: Duration)(thunk: => Unit): Cancellable
/** Schedules a task for execution after a given delay.
*
* @param delay the duration after which the task should be executed
* @param task the task that is scheduled for execution
* @return a `Cancellable` that may be used to cancel the execution
* of the task
*/
def scheduleOnce(delay: Duration, task: Runnable): Cancellable
/** Schedules a thunk for execution after a given delay.
*
* @param delay the duration after which the thunk should be executed
* @param thunk the thunk that is scheduled for execution
* @return a `Cancellable` that may be used to cancel the execution
* of the thunk
*/
def scheduleOnce(delay: Duration)(task: => Unit): Cancellable
}
trait Cancellable {
/** Cancels the underlying task.
*/
def cancel(): Unit
}
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