com.sun.grizzly.DefaultProtocolChainInstanceHandler Maven / Gradle / Ivy
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package com.sun.grizzly;
import java.util.concurrent.ConcurrentLinkedQueue;
/**
* Default implementation of an ProtocolChainInstanceHandler.
* {@link ProtocolChain} are cached using a ConcurrentLinkedQueue. When
* the queue becomes empty, a new instance of {@link ProtocolChain}
* is created.
*
* @author Jeanfrancois Arcand
*/
public class DefaultProtocolChainInstanceHandler
implements ProtocolChainInstanceHandler{
/**
* List used to cache instance of ProtocolChain.
*/
protected ConcurrentLinkedQueue protocolChains;
public DefaultProtocolChainInstanceHandler() {
protocolChains = new ConcurrentLinkedQueue();
}
/**
* Return a pooled instance of ProtocolChain. If the pool is empty,
* a new instance of ProtocolChain will be returned.
* @return ProtocolChain
*/
public ProtocolChain poll() {
ProtocolChain protocolChain = protocolChains.poll();
if (protocolChain == null){
protocolChain = new DefaultProtocolChain();
}
return protocolChain;
}
/**
* Offer (add) an instance of ProtocolChain to this instance pool.
* @param protocolChain - ProtocolChain to offer / add to the pool
* @return boolean, if ProtocolChain was successfully added
* to the pool
*/
public boolean offer(ProtocolChain protocolChain) {
return protocolChains.offer(protocolChain);
}
}