com.alibaba.dubbo.common.threadpool.support.eager

Class TaskQueue<R extends Runnable>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<E>

java.util.concurrent.LinkedBlockingQueue<Runnable>

com.alibaba.dubbo.common.threadpool.support.eager.TaskQueue<R>

All Implemented Interfaces:

Serializable, Iterable<Runnable>, Collection<Runnable>, BlockingQueue<Runnable>, Queue<Runnable>

public class TaskQueue<R extends Runnable>
extends LinkedBlockingQueue<Runnable>

TaskQueue in the EagerThreadPoolExecutor It offer a task if the executor's submittedTaskCount less than currentPoolThreadSize or the currentPoolThreadSize more than executor's maximumPoolSize. That can make the executor create new worker when the task num is bigger than corePoolSize but less than maximumPoolSize.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TaskQueue(int capacity)

Method Summary

Modifier and Type	Method and Description
boolean	offer(Runnable runnable)
boolean	retryOffer(Runnable o, long timeout, TimeUnit unit) retry offer task
void	setExecutor(EagerThreadPoolExecutor exec)

Methods inherited from class java.util.concurrent.LinkedBlockingQueue

clear, contains, drainTo, drainTo, iterator, offer, peek, poll, poll, put, remainingCapacity, remove, size, spliterator, take, toArray, toArray, toString

Methods inherited from class java.util.AbstractQueue

add, addAll, element, remove

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.concurrent.BlockingQueue

add

Methods inherited from interface java.util.Queue

element, remove

Methods inherited from interface java.util.Collection

addAll, containsAll, equals, hashCode, isEmpty, parallelStream, removeAll, removeIf, retainAll, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

TaskQueue

public TaskQueue(int capacity)

Method Detail

setExecutor

public void setExecutor(EagerThreadPoolExecutor exec)

offer

public boolean offer(Runnable runnable)

Specified by:

offer in interface BlockingQueue<Runnable>

Specified by:

offer in interface Queue<Runnable>

Overrides:

offer in class LinkedBlockingQueue<Runnable>

retryOffer

public boolean retryOffer(Runnable o,
                          long timeout,
                          TimeUnit unit)
                   throws InterruptedException

retry offer task

Parameters:

o - task

Returns:

offer success or not

Throws:

RejectedExecutionException - if executor is terminated.

InterruptedException