ThreadPoolExecutor.DiscardOldestPolicy (Java 2 Platform SE 5.0) (original) (raw)

java.util.concurrent

Class ThreadPoolExecutor.DiscardOldestPolicy

java.lang.Object extended by java.util.concurrent.ThreadPoolExecutor.DiscardOldestPolicy

All Implemented Interfaces:

RejectedExecutionHandler

Enclosing class:

ThreadPoolExecutor

public static class ThreadPoolExecutor.DiscardOldestPolicy

extends Object

implements RejectedExecutionHandler

A handler for rejected tasks that discards the oldest unhandled request and then retries execute, unless the executor is shut down, in which case the task is discarded.

Constructor Summary
ThreadPoolExecutor.DiscardOldestPolicy() Creates a DiscardOldestPolicy for the given executor.

Method Summary
void	[rejectedExecution](../../../java/util/concurrent/ThreadPoolExecutor.DiscardOldestPolicy.html#rejectedExecution%28java.lang.Runnable, java.util.concurrent.ThreadPoolExecutor%29)(Runnable r,ThreadPoolExecutor e) Obtains and ignores the next task that the executor would otherwise execute, if one is immediately available, and then retries execution of task r, unless the executor is shut down, in which case task r is instead discarded.

Method Summary

void

[rejectedExecution](../../../java/util/concurrent/ThreadPoolExecutor.DiscardOldestPolicy.html#rejectedExecution%28java.lang.Runnable, java.util.concurrent.ThreadPoolExecutor%29)(Runnable r,ThreadPoolExecutor e) Obtains and ignores the next task that the executor would otherwise execute, if one is immediately available, and then retries execution of task r, unless the executor is shut down, in which case task r is instead discarded.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, [wait](../../../java/lang/Object.html#wait%28long, int%29)

Constructor Detail

ThreadPoolExecutor.DiscardOldestPolicy

public ThreadPoolExecutor.DiscardOldestPolicy()

Creates a DiscardOldestPolicy for the given executor.

Method Detail

rejectedExecution

public void rejectedExecution(Runnable r, ThreadPoolExecutor e)

Obtains and ignores the next task that the executor would otherwise execute, if one is immediately available, and then retries execution of task r, unless the executor is shut down, in which case task r is instead discarded.

Specified by:

[rejectedExecution](../../../java/util/concurrent/RejectedExecutionHandler.html#rejectedExecution%28java.lang.Runnable, java.util.concurrent.ThreadPoolExecutor%29) in interface [RejectedExecutionHandler](../../../java/util/concurrent/RejectedExecutionHandler.html "interface in java.util.concurrent")

Parameters:

r - the runnable task requested to be executed

e - the executor attempting to execute this task

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.