net.tomp2p.utils

Class FIFOCache<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<E>

java.util.concurrent.ConcurrentLinkedQueue<E>

net.tomp2p.utils.FIFOCache<E>

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>, Queue<E>

public class FIFOCache<E>
extends ConcurrentLinkedQueue<E>

A thread-safe FIFO Cache with a fixed size based on a ConcurrentLinkedQueue Replace with ConcurrentLinkedDeque when Java 1.7 is available on Android. Created by Sebastian Stephan on 03.12.14.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FIFOCache(int max_size)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(E e) Add an element to the FIFO cache.
E	peekTail() Returns the tail element of the queue, i.e.

Methods inherited from class java.util.concurrent.ConcurrentLinkedQueue

addAll, contains, isEmpty, iterator, offer, peek, poll, remove, size, toArray, toArray

Methods inherited from class java.util.AbstractQueue

clear, element, remove

Methods inherited from class java.util.AbstractCollection

containsAll, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Queue

element, remove

Methods inherited from interface java.util.Collection

clear, containsAll, equals, hashCode, removeAll, retainAll

Constructor Detail

FIFOCache

public FIFOCache(int max_size)

Method Detail

add

public boolean add(E e)

Add an element to the FIFO cache. If the cache is already full, the oldest element in the cache is removed.

Specified by:

add in interface Collection<E>

Specified by:

add in interface Queue<E>

Overrides:

add in class ConcurrentLinkedQueue<E>

Parameters:

e - Element to add

Returns:

True if the cache changed because of the insert

peekTail

public E peekTail()

Returns the tail element of the queue, i.e. the last inserted element

Returns:

The tail element or null if the list is empty