org.alfresco.util

Class DynamicallySizedThreadPoolExecutor

java.lang.Object

java.util.concurrent.AbstractExecutorService

java.util.concurrent.ThreadPoolExecutor

org.alfresco.util.DynamicallySizedThreadPoolExecutor

All Implemented Interfaces:

java.util.concurrent.Executor, java.util.concurrent.ExecutorService

public class DynamicallySizedThreadPoolExecutor
extends java.util.concurrent.ThreadPoolExecutor

This is an instance of ThreadPoolExecutor which behaves how one would expect it to, even when faced with an unlimited queue. Unlike the default ThreadPoolExecutor, it will add new Threads up to maximumPoolSize when there is lots of pending work, rather than only when the queue is full (which it often never will be, especially for unlimited queues)

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.ThreadPoolExecutor

java.util.concurrent.ThreadPoolExecutor.AbortPolicy, java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy, java.util.concurrent.ThreadPoolExecutor.DiscardOldestPolicy, java.util.concurrent.ThreadPoolExecutor.DiscardPolicy

Constructor Summary

Constructors

Constructor and Description
DynamicallySizedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, java.util.concurrent.TimeUnit unit, java.util.concurrent.BlockingQueue workQueue)
DynamicallySizedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, java.util.concurrent.TimeUnit unit, java.util.concurrent.BlockingQueue workQueue, java.util.concurrent.RejectedExecutionHandler handler)
DynamicallySizedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, java.util.concurrent.TimeUnit unit, java.util.concurrent.BlockingQueue workQueue, java.util.concurrent.ThreadFactory threadFactory)
DynamicallySizedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, java.util.concurrent.TimeUnit unit, java.util.concurrent.BlockingQueue workQueue, java.util.concurrent.ThreadFactory threadFactory, java.util.concurrent.RejectedExecutionHandler handler)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	afterExecute(java.lang.Runnable r, java.lang.Throwable t)
void	execute(java.lang.Runnable command)
void	setCorePoolSize(int corePoolSize)

Methods inherited from class java.util.concurrent.ThreadPoolExecutor

allowCoreThreadTimeOut, allowsCoreThreadTimeOut, awaitTermination, beforeExecute, finalize, getActiveCount, getCompletedTaskCount, getCorePoolSize, getKeepAliveTime, getLargestPoolSize, getMaximumPoolSize, getPoolSize, getQueue, getRejectedExecutionHandler, getTaskCount, getThreadFactory, isShutdown, isTerminated, isTerminating, prestartAllCoreThreads, prestartCoreThread, purge, remove, setKeepAliveTime, setMaximumPoolSize, setRejectedExecutionHandler, setThreadFactory, shutdown, shutdownNow, terminated, toString

Methods inherited from class java.util.concurrent.AbstractExecutorService

invokeAll, invokeAll, invokeAny, invokeAny, newTaskFor, newTaskFor, submit, submit, submit

Methods inherited from class java.lang.Object

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

Constructor Detail

DynamicallySizedThreadPoolExecutor

public DynamicallySizedThreadPoolExecutor(int corePoolSize,
                                  int maximumPoolSize,
                                  long keepAliveTime,
                                  java.util.concurrent.TimeUnit unit,
                                  java.util.concurrent.BlockingQueue workQueue,
                                  java.util.concurrent.RejectedExecutionHandler handler)

DynamicallySizedThreadPoolExecutor

public DynamicallySizedThreadPoolExecutor(int corePoolSize,
                                  int maximumPoolSize,
                                  long keepAliveTime,
                                  java.util.concurrent.TimeUnit unit,
                                  java.util.concurrent.BlockingQueue workQueue,
                                  java.util.concurrent.ThreadFactory threadFactory,
                                  java.util.concurrent.RejectedExecutionHandler handler)

DynamicallySizedThreadPoolExecutor

public DynamicallySizedThreadPoolExecutor(int corePoolSize,
                                  int maximumPoolSize,
                                  long keepAliveTime,
                                  java.util.concurrent.TimeUnit unit,
                                  java.util.concurrent.BlockingQueue workQueue,
                                  java.util.concurrent.ThreadFactory threadFactory)

DynamicallySizedThreadPoolExecutor

public DynamicallySizedThreadPoolExecutor(int corePoolSize,
                                  int maximumPoolSize,
                                  long keepAliveTime,
                                  java.util.concurrent.TimeUnit unit,
                                  java.util.concurrent.BlockingQueue workQueue)

Method Detail

setCorePoolSize

public void setCorePoolSize(int corePoolSize)

Overrides:

setCorePoolSize in class java.util.concurrent.ThreadPoolExecutor

execute

public void execute(java.lang.Runnable command)

Specified by:

execute in interface java.util.concurrent.Executor

Overrides:

execute in class java.util.concurrent.ThreadPoolExecutor

afterExecute

protected void afterExecute(java.lang.Runnable r,
                java.lang.Throwable t)

Overrides:

afterExecute in class java.util.concurrent.ThreadPoolExecutor