com.fr.third.jgroups.blocks.executor

类 ExecutionService.DistributedFuture<V>

java.lang.Object

com.fr.third.jgroups.blocks.executor.ExecutionService.DistributedFuture<V>

类型参数:

V -

所有已实现的接口:

ExecutorNotification, NotifyingFuture<V>, java.lang.Runnable, java.util.concurrent.Future<V>, java.util.concurrent.RunnableFuture<V>

封闭类:

ExecutionService

public static class ExecutionService.DistributedFuture<V>
extends java.lang.Object
implements java.util.concurrent.RunnableFuture<V>, ExecutorNotification, NotifyingFuture<V>

This is basically a copy of the FutureTask in java.util.concurrent but added serializable to it. Also added in the NotifyingFuture so that the channel can update the future when the value is calculated.

作者:

wburns

嵌套类概要

嵌套类

限定符和类型	类和说明
protected static class	ExecutionService.DistributedFuture.Sync<V> Synchronization control for FutureTask.

字段概要

字段

限定符和类型	字段和说明
protected ExecutionService.DistributedFuture.Sync<V>	sync Synchronization control for FutureTask

构造器概要

构造器

构造器和说明
ExecutionService.DistributedFuture(JChannel channel, java.util.concurrent.locks.Lock unfinishedLock, java.util.concurrent.locks.Condition condition, java.util.Set<java.util.concurrent.Future<?>> futuresToFinish, java.util.concurrent.Callable<V> callable) Creates a FutureTask that will upon running, execute the given Callable.
ExecutionService.DistributedFuture(JChannel channel, java.util.concurrent.locks.Lock unfinishedLock, java.util.concurrent.locks.Condition condition, java.util.Set<java.util.concurrent.Future<?>> futuresToFinish, java.lang.Runnable runnable, V result) Creates a FutureTask that will upon running, execute the given Runnable, and arrange that get will return the given result on successful completion.

方法概要

方法

限定符和类型	方法和说明
boolean	cancel(boolean mayInterruptIfRunning)
protected void	done() Protected method invoked when this task transitions to state isDone (whether normally or via cancellation).
V	get()
V	get(long timeout, java.util.concurrent.TimeUnit unit)
java.util.concurrent.Callable<V>	getCallable()
void	interrupted(java.lang.Runnable runnable)
boolean	isCancelled()
boolean	isDone()
void	resultReturned(java.lang.Object obj)
void	run() Sets this Future to the result of its computation unless it has been cancelled.
protected void	set(V v) Sets the result of this Future to the given value unless this future has already been set or has been cancelled.
protected void	setException(java.lang.Throwable t) Causes this future to report an ExecutionException with the given throwable as its cause, unless this Future has already been set or has been cancelled.
NotifyingFuture<V>	setListener(FutureListener<V> listener) Attaches a listener and returns the same future instance, to allow for 'building' futures.
void	throwableEncountered(java.lang.Throwable t)
java.lang.String	toString()

从类继承的方法 java.lang.Object

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

字段详细资料

sync

protected final ExecutionService.DistributedFuture.Sync<V> sync

Synchronization control for FutureTask

构造器详细资料

ExecutionService.DistributedFuture

public ExecutionService.DistributedFuture(JChannel channel,
                                  java.util.concurrent.locks.Lock unfinishedLock,
                                  java.util.concurrent.locks.Condition condition,
                                  java.util.Set<java.util.concurrent.Future<?>> futuresToFinish,
                                  java.util.concurrent.Callable<V> callable)

Creates a FutureTask that will upon running, execute the given Callable.

参数:

channel - The channel that messages are sent down

unfinishedLock - The lock which protects the futuresToFinish set object.

condition - The condition to signal when this future finishes

futuresToFinish - The set to remove this future from when it is finished.

callable - The callable to actually run on the server side

ExecutionService.DistributedFuture

public ExecutionService.DistributedFuture(JChannel channel,
                                  java.util.concurrent.locks.Lock unfinishedLock,
                                  java.util.concurrent.locks.Condition condition,
                                  java.util.Set<java.util.concurrent.Future<?>> futuresToFinish,
                                  java.lang.Runnable runnable,
                                  V result)

Creates a FutureTask that will upon running, execute the given Runnable, and arrange that get will return the given result on successful completion.

参数:

channel - The channel that messages are sent down

unfinishedLock - The lock which protects the futuresToFinish set object.

condition - The condition to signal when this future finishes

futuresToFinish - The set to remove this future from when it is finished.

runnable - the runnable task

result - the result to return on successful completion. If you don't need a particular result, consider using constructions of the form: Future<?> f = new FutureTask<Object>(runnable, null)

抛出:

java.lang.NullPointerException - if runnable is null

方法详细资料

toString

public java.lang.String toString()

覆盖:

toString 在类中 java.lang.Object

getCallable

public java.util.concurrent.Callable<V> getCallable()

isCancelled

public boolean isCancelled()

指定者:

isCancelled 在接口中 java.util.concurrent.Future<V>

isDone

public boolean isDone()

指定者:

isDone 在接口中 java.util.concurrent.Future<V>

cancel

public boolean cancel(boolean mayInterruptIfRunning)

指定者:

cancel 在接口中 java.util.concurrent.Future<V>

get

public V get()
      throws java.lang.InterruptedException,
             java.util.concurrent.ExecutionException

指定者:

get 在接口中 java.util.concurrent.Future<V>

抛出:

java.util.concurrent.CancellationException

java.lang.InterruptedException

java.util.concurrent.ExecutionException

get

public V get(long timeout,
    java.util.concurrent.TimeUnit unit)
      throws java.lang.InterruptedException,
             java.util.concurrent.ExecutionException,
             java.util.concurrent.TimeoutException

指定者:

get 在接口中 java.util.concurrent.Future<V>

抛出:

java.util.concurrent.CancellationException

java.lang.InterruptedException

java.util.concurrent.ExecutionException

java.util.concurrent.TimeoutException

done

protected void done()

Protected method invoked when this task transitions to state isDone (whether normally or via cancellation). The default implementation does nothing. Subclasses may override this method to invoke completion callbacks or perform bookkeeping. Note that you can query status inside the implementation of this method to determine whether this task has been cancelled.

setListener

public NotifyingFuture<V> setListener(FutureListener<V> listener)

从接口复制的说明: NotifyingFuture

Attaches a listener and returns the same future instance, to allow for 'building' futures.

指定者:

setListener 在接口中 NotifyingFuture<V>

参数:

listener - listener to attach

返回:

the same future instance

set

protected void set(V v)

Sets the result of this Future to the given value unless this future has already been set or has been cancelled. This method is invoked internally by the run method upon successful completion of the computation.

参数:

v - the value

setException

protected void setException(java.lang.Throwable t)

Causes this future to report an ExecutionException with the given throwable as its cause, unless this Future has already been set or has been cancelled. This method is invoked internally by the run method upon failure of the computation.

参数:

t - the cause of failure

run

public void run()

Sets this Future to the result of its computation unless it has been cancelled.

指定者:

run 在接口中 java.lang.Runnable

指定者:

run 在接口中 java.util.concurrent.RunnableFuture<V>

resultReturned

public void resultReturned(java.lang.Object obj)

指定者:

resultReturned 在接口中 ExecutorNotification

throwableEncountered

public void throwableEncountered(java.lang.Throwable t)

指定者:

throwableEncountered 在接口中 ExecutorNotification

interrupted

public void interrupted(java.lang.Runnable runnable)

指定者:

interrupted 在接口中 ExecutorNotification