Package VASSAL.tools.concurrent

Class SimpleFuture<V>

java.lang.Object

VASSAL.tools.concurrent.SimpleFuture<V>

Type Parameters:

V - the result type returned by the get() method

All Implemented Interfaces:

Future<V>, SettableFuture<V>

Direct Known Subclasses:

SimpleRunnableFuture

public class SimpleFuture<V>
extends Object
implements SettableFuture<V>

An uninterruptable SettableFuture.

Since:

3.1.11

Author:

Joel Uckelman

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	cancelled
protected CountDownLatch	done
protected Throwable	exception
protected V	result

Constructor Summary

Constructors

Constructor	Description
SimpleFuture()

Method Summary

Modifier and Type

Method

Description

boolean

cancel(boolean mayInterruptIfRunning)

V

get()

V

get(long timeout, TimeUnit unit)

boolean

isCancelled()

boolean

isDone()

void

set(V r)

Sets the result to be returned by Future.get().

void

setException(Throwable t)

Sets the exception to be wrapped in an ExecutionException and thrown by Future.get().

Methods inherited from class java.lang.Object

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

Field Details

result

protected V result

exception

protected Throwable exception

cancelled

protected volatile boolean cancelled

done

protected final CountDownLatch done

Constructor Details

SimpleFuture

public SimpleFuture()

Method Details

cancel

public boolean cancel(boolean mayInterruptIfRunning)

This implementation is uninterruptable, so ignores the parameter.

Specified by:

cancel in interface Future<V>

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface Future<V>

isDone

public boolean isDone()

Specified by:

isDone in interface Future<V>

setException

public void setException(Throwable t)

Sets the exception to be wrapped in an ExecutionException and thrown by Future.get(). May be called only from the thread executing the computation.

Specified by:

setException in interface SettableFuture<V>

Parameters:

t - the exception

set

public void set(V r)

Sets the result to be returned by Future.get(). May be called only from the thread executing the computation.

Specified by:

set in interface SettableFuture<V>

Parameters:

r - the result

get

public V get()
      throws CancellationException,
ExecutionException,
InterruptedException

Specified by:

get in interface Future<V>

Throws:

CancellationException

ExecutionException

InterruptedException

get

public V get(long timeout,
 TimeUnit unit)
      throws CancellationException,
ExecutionException,
InterruptedException,
TimeoutException

Specified by:

get in interface Future<V>

Throws:

CancellationException

ExecutionException

InterruptedException

TimeoutException