com.liferay.portal.kernel.concurrent

Class DiscardWithCancelPolicy

java.lang.Object

com.liferay.portal.kernel.concurrent.DiscardWithCancelPolicy

All Implemented Interfaces:

RejectedExecutionHandler

public class DiscardWithCancelPolicy
extends java.lang.Object
implements RejectedExecutionHandler

Handles rejected tasks by canceling them immediately.

Use this policy for efficiently discarding rejected tasks. Unlike CallerRunsPolicy, this policy maintains the order of tasks in the task queue. Unlike DiscardOldestPolicy and DiscardPolicy, which ultimately call Future.get(), threads do not block waiting for a timeout.

Author:

Shuyang Zhou

Constructor Summary

Constructors

Constructor and Description
DiscardWithCancelPolicy()

Method Summary

Modifier and Type	Method and Description
void	rejectedExecution(java.lang.Runnable runnable, ThreadPoolExecutor threadPoolExecutor) Rejects execution of the Runnable task by canceling it immediately.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DiscardWithCancelPolicy

public DiscardWithCancelPolicy()

Method Detail

rejectedExecution

public void rejectedExecution(java.lang.Runnable runnable,
                              ThreadPoolExecutor threadPoolExecutor)

Rejects execution of the Runnable task by canceling it immediately.

Important: The task can only be canceled if it is a subtype of Future.

Specified by:

rejectedExecution in interface RejectedExecutionHandler

Parameters:

runnable - the task

threadPoolExecutor - the executor

See Also:

RejectedExecutionHandler.rejectedExecution( Runnable, java.util.concurrent.ThreadPoolExecutor)