org.glassfish.hk2.utilities.cache

Class Cache.OriginThreadAwareFuture

java.lang.Object

org.glassfish.hk2.utilities.cache.Cache.OriginThreadAwareFuture

All Implemented Interfaces:

java.util.concurrent.Future<V>

Enclosing class:

Cache<K,V>

private class Cache.OriginThreadAwareFuture
extends java.lang.Object
implements java.util.concurrent.Future<V>

Helper class, that remembers the future task origin thread, so that cycles could be detected. If any thread starts computation for given key and the same thread requests the computed value before the computation stops, a cycle is detected and registered cycle handler is called.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.concurrent.FutureTask<V>	future
private long	threadId

Constructor Summary

Constructors

Constructor and Description
OriginThreadAwareFuture(Cache<K,V> cache, K key)

Method Summary

Modifier and Type	Method and Description
boolean	cancel(boolean mayInterruptIfRunning)
boolean	equals(java.lang.Object obj)
V	get()
V	get(long timeout, java.util.concurrent.TimeUnit unit)
int	hashCode()
boolean	isCancelled()
boolean	isDone()
void	run()

Methods inherited from class java.lang.Object

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

Field Detail

threadId

private volatile long threadId

future

private final java.util.concurrent.FutureTask<V> future

Constructor Detail

OriginThreadAwareFuture

OriginThreadAwareFuture(Cache<K,V> cache,
                        K key)

Method Detail

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

cancel

public boolean cancel(boolean mayInterruptIfRunning)

Specified by:

cancel in interface java.util.concurrent.Future<V>

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface java.util.concurrent.Future<V>

isDone

public boolean isDone()

Specified by:

isDone in interface java.util.concurrent.Future<V>

get

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

Specified by:

get in interface java.util.concurrent.Future<V>

Throws:

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

Specified by:

get in interface java.util.concurrent.Future<V>

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

java.util.concurrent.TimeoutException

run

public void run()