Class UnorderedThreadPoolExecutor

java.lang.Object

java.util.concurrent.AbstractExecutorService

java.util.concurrent.ThreadPoolExecutor

org.apache.mina.filter.executor.UnorderedThreadPoolExecutor

All Implemented Interfaces:

Executor, ExecutorService

public class UnorderedThreadPoolExecutor
extends ThreadPoolExecutor

A ThreadPoolExecutor that does not maintain the order of IoEvents. This means more than one event handler methods can be invoked at the same time with mixed order. For example, let's assume that messageReceived, messageSent, and sessionClosed events are fired.

• All event handler methods can be called simultaneously. (e.g. messageReceived and messageSent can be invoked at the same time.)
• The event order can be mixed up. (e.g. sessionClosed or messageSent can be invoked before messageReceived is invoked.)

If you need to maintain the order of events per session, please use OrderedThreadPoolExecutor.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	UnorderedThreadPoolExecutor.Worker

Nested classes/interfaces inherited from class ThreadPoolExecutor

ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy

Field Summary

Fields

Modifier and Type	Field	Description
private long	completedTaskCount
private int	corePoolSize
private static final Runnable	EXIT_SIGNAL
private final AtomicInteger	idleWorkers
private int	largestPoolSize
private int	maximumPoolSize
private final IoEventQueueHandler	queueHandler
private boolean	shutdown
private final Set<UnorderedThreadPoolExecutor.Worker>	workers

Constructor Summary

Constructors

Constructor	Description
UnorderedThreadPoolExecutor()	Creates a new UnorderedThreadPoolExecutor instance
UnorderedThreadPoolExecutor(int maximumPoolSize)	Creates a new UnorderedThreadPoolExecutor instance
UnorderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize)	Creates a new UnorderedThreadPoolExecutor instance
UnorderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit)	Creates a new UnorderedThreadPoolExecutor instance
UnorderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, ThreadFactory threadFactory)	Creates a new UnorderedThreadPoolExecutor instance
UnorderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, ThreadFactory threadFactory, IoEventQueueHandler queueHandler)	Creates a new UnorderedThreadPoolExecutor instance
UnorderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, IoEventQueueHandler queueHandler)	Creates a new UnorderedThreadPoolExecutor instance

Method Summary

Modifier and Type	Method	Description
private void	addWorker()
private void	addWorkerIfNecessary()
boolean	awaitTermination(long timeout, TimeUnit unit)
private void	checkTaskType(Runnable task)
void	execute(Runnable task)
int	getActiveCount()
long	getCompletedTaskCount()
int	getCorePoolSize()
int	getLargestPoolSize()
int	getMaximumPoolSize()
int	getPoolSize()
IoEventQueueHandler	getQueueHandler()
long	getTaskCount()
boolean	isShutdown()
boolean	isTerminated()
boolean	isTerminating()
int	prestartAllCoreThreads()
boolean	prestartCoreThread()
void	purge()
private void	rejectTask(Runnable task)
boolean	remove(Runnable task)
private void	removeWorker()
void	setCorePoolSize(int corePoolSize)
void	setMaximumPoolSize(int maximumPoolSize)
void	setRejectedExecutionHandler(RejectedExecutionHandler handler)
void	shutdown()
List<Runnable>	shutdownNow()

Methods inherited from class ThreadPoolExecutor

afterExecute, allowCoreThreadTimeOut, allowsCoreThreadTimeOut, beforeExecute, finalize, getKeepAliveTime, getQueue, getRejectedExecutionHandler, getThreadFactory, setKeepAliveTime, setThreadFactory, terminated, toString

Methods inherited from class AbstractExecutorService

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

Methods inherited from class Object

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

Field Details

EXIT_SIGNAL

private static final Runnable EXIT_SIGNAL

workers

private final Set<UnorderedThreadPoolExecutor.Worker> workers

corePoolSize

private volatile int corePoolSize

maximumPoolSize

private volatile int maximumPoolSize

largestPoolSize

private volatile int largestPoolSize

idleWorkers

private final AtomicInteger idleWorkers

completedTaskCount

private long completedTaskCount

shutdown

private volatile boolean shutdown

queueHandler

private final IoEventQueueHandler queueHandler

Constructor Details

UnorderedThreadPoolExecutor

public UnorderedThreadPoolExecutor()

Creates a new UnorderedThreadPoolExecutor instance

UnorderedThreadPoolExecutor

public UnorderedThreadPoolExecutor(int maximumPoolSize)

Creates a new UnorderedThreadPoolExecutor instance

Parameters:

maximumPoolSize - The maximum number of threads in the pool

UnorderedThreadPoolExecutor

public UnorderedThreadPoolExecutor(int corePoolSize,
 int maximumPoolSize)

Creates a new UnorderedThreadPoolExecutor instance

Parameters:

corePoolSize - The initial threads pool size

maximumPoolSize - The maximum number of threads in the pool

UnorderedThreadPoolExecutor

public UnorderedThreadPoolExecutor(int corePoolSize,
 int maximumPoolSize,
 long keepAliveTime,
 TimeUnit unit)

Creates a new UnorderedThreadPoolExecutor instance

Parameters:

corePoolSize - The initial threads pool size

maximumPoolSize - The maximum number of threads in the pool

keepAliveTime - The time to keep threads alive

unit - The time unit for the keepAliveTime

UnorderedThreadPoolExecutor

public UnorderedThreadPoolExecutor(int corePoolSize,
 int maximumPoolSize,
 long keepAliveTime,
 TimeUnit unit,
 IoEventQueueHandler queueHandler)

Creates a new UnorderedThreadPoolExecutor instance

Parameters:

corePoolSize - The initial threads pool size

maximumPoolSize - The maximum number of threads in the pool

keepAliveTime - The time to keep threads alive

unit - The time unit for the keepAliveTime

queueHandler - The Event queue handler to use

UnorderedThreadPoolExecutor

public UnorderedThreadPoolExecutor(int corePoolSize,
 int maximumPoolSize,
 long keepAliveTime,
 TimeUnit unit,
 ThreadFactory threadFactory)

Creates a new UnorderedThreadPoolExecutor instance

Parameters:

corePoolSize - The initial threads pool size

maximumPoolSize - The maximum number of threads in the pool

keepAliveTime - The time to keep threads alive

unit - The time unit for the keepAliveTime

threadFactory - The Thread factory to use

UnorderedThreadPoolExecutor

public UnorderedThreadPoolExecutor(int corePoolSize,
 int maximumPoolSize,
 long keepAliveTime,
 TimeUnit unit,
 ThreadFactory threadFactory,
 IoEventQueueHandler queueHandler)

Creates a new UnorderedThreadPoolExecutor instance

Parameters:

corePoolSize - The initial threads pool size

maximumPoolSize - The maximum number of threads in the pool

keepAliveTime - The time to keep threads alive

unit - The time unit for the keepAliveTime

threadFactory - The Thread factory to use

queueHandler - The Event queue handler to use

Method Details

getQueueHandler

public IoEventQueueHandler getQueueHandler()

Returns:

The Queue handler in use

setRejectedExecutionHandler

public void setRejectedExecutionHandler(RejectedExecutionHandler handler)

Overrides:

setRejectedExecutionHandler in class ThreadPoolExecutor

addWorker

private void addWorker()

addWorkerIfNecessary

private void addWorkerIfNecessary()

removeWorker

private void removeWorker()

getMaximumPoolSize

public int getMaximumPoolSize()

Overrides:

getMaximumPoolSize in class ThreadPoolExecutor

setMaximumPoolSize

public void setMaximumPoolSize(int maximumPoolSize)

Overrides:

setMaximumPoolSize in class ThreadPoolExecutor

awaitTermination

public boolean awaitTermination(long timeout,
 TimeUnit unit)
                         throws InterruptedException

Specified by:

awaitTermination in interface ExecutorService

Overrides:

awaitTermination in class ThreadPoolExecutor

Throws:

InterruptedException

isShutdown

public boolean isShutdown()

Specified by:

isShutdown in interface ExecutorService

Overrides:

isShutdown in class ThreadPoolExecutor

isTerminated

public boolean isTerminated()

Specified by:

isTerminated in interface ExecutorService

Overrides:

isTerminated in class ThreadPoolExecutor

shutdown

public void shutdown()

Specified by:

shutdown in interface ExecutorService

Overrides:

shutdown in class ThreadPoolExecutor

shutdownNow

public List<Runnable> shutdownNow()

Specified by:

shutdownNow in interface ExecutorService

Overrides:

shutdownNow in class ThreadPoolExecutor

execute

public void execute(Runnable task)

Specified by:

execute in interface Executor

Overrides:

execute in class ThreadPoolExecutor

rejectTask

private void rejectTask(Runnable task)

checkTaskType

private void checkTaskType(Runnable task)

getActiveCount

public int getActiveCount()

Overrides:

getActiveCount in class ThreadPoolExecutor

getCompletedTaskCount

public long getCompletedTaskCount()

Overrides:

getCompletedTaskCount in class ThreadPoolExecutor

getLargestPoolSize

public int getLargestPoolSize()

Overrides:

getLargestPoolSize in class ThreadPoolExecutor

getPoolSize

public int getPoolSize()

Overrides:

getPoolSize in class ThreadPoolExecutor

getTaskCount

public long getTaskCount()

Overrides:

getTaskCount in class ThreadPoolExecutor

isTerminating

public boolean isTerminating()

Overrides:

isTerminating in class ThreadPoolExecutor

prestartAllCoreThreads

public int prestartAllCoreThreads()

Overrides:

prestartAllCoreThreads in class ThreadPoolExecutor

prestartCoreThread

public boolean prestartCoreThread()

Overrides:

prestartCoreThread in class ThreadPoolExecutor

purge

public void purge()

Overrides:

purge in class ThreadPoolExecutor

remove

public boolean remove(Runnable task)

Overrides:

remove in class ThreadPoolExecutor

getCorePoolSize

public int getCorePoolSize()

Overrides:

getCorePoolSize in class ThreadPoolExecutor

setCorePoolSize

public void setCorePoolSize(int corePoolSize)

Overrides:

setCorePoolSize in class ThreadPoolExecutor