Class 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.

Constructors

Constructor and Description
DiscardOldestPolicy()

Creates a DiscardOldestPolicy for the given executor.

Methods

Modifier and Type Method and Description
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

Constructors

DiscardOldestPolicy

public DiscardOldestPolicy()

Creates a DiscardOldestPolicy for the given executor.

Methods

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

© 1993, 2020, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ThreadPoolExecutor.DiscardOldestPolicy.html