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JavaTM 2 Platform Std. Ed. v1.5.0

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(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
 

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 in interface RejectedExecutionHandler
Parameters:
r - the runnable task requested to be executed
e - the executor attempting to execute this task

Copyright 2003 Sun Microsystems, Inc. All rights reserved