ThreadPoolExecutor.DiscardOldestPolicy

extends Object
implements RejectedExecutionHandler

java.lang.Object
↳	java.util.concurrent.ThreadPoolExecutor.DiscardOldestPolicy

Class Overview

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.

Summary

Public Constructors
	ThreadPoolExecutor.DiscardOldestPolicy() Creates a `DiscardOldestPolicy` for the given executor.

Public Methods
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.

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Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

From interface java.util.concurrent.RejectedExecutionHandler

Public Constructors

public ThreadPoolExecutor.DiscardOldestPolicy ()

Since: API Level 1

Creates a DiscardOldestPolicy for the given executor.

Public Methods

public void rejectedExecution (Runnable r, ThreadPoolExecutor e)

Since: API Level 1

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.

Parameters

r	the runnable task requested to be executed
e	the executor attempting to execute this task

Results

Interfaces

Classes

Enums

Exceptions