Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
DefaultProtocolChainInstanceHandler |
|
| 0.0;0 |
1 | /* | |
2 | * | |
3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
4 | * | |
5 | * Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved. | |
6 | * | |
7 | * The contents of this file are subject to the terms of either the GNU | |
8 | * General Public License Version 2 only ("GPL") or the Common Development | |
9 | * and Distribution License("CDDL") (collectively, the "License"). You | |
10 | * may not use this file except in compliance with the License. You can obtain | |
11 | * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html | |
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20 | * Header, with the fields enclosed by brackets [] replaced by your own | |
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24 | * Contributor(s): | |
25 | * | |
26 | * If you wish your version of this file to be governed by only the CDDL or | |
27 | * only the GPL Version 2, indicate your decision by adding "[Contributor] | |
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32 | * its licensees as provided above. However, if you add GPL Version 2 code | |
33 | * and therefore, elected the GPL Version 2 license, then the option applies | |
34 | * only if the new code is made subject to such option by the copyright | |
35 | * holder. | |
36 | * | |
37 | */ | |
38 | ||
39 | package com.sun.grizzly; | |
40 | ||
41 | import java.util.concurrent.ConcurrentLinkedQueue; | |
42 | ||
43 | /** | |
44 | * Default implementation of an ProtocolChainInstanceHandler. | |
45 | * {@link ProtocolChain} are cached using a ConcurrentLinkedQueue. When | |
46 | * the queue becomes empty, a new instance of {@link ProtocolChain} | |
47 | * is created. | |
48 | * | |
49 | * @author Jeanfrancois Arcand | |
50 | */ | |
51 | public class DefaultProtocolChainInstanceHandler | |
52 | implements ProtocolChainInstanceHandler{ | |
53 | ||
54 | ||
55 | /** | |
56 | * List used to cache instance of ProtocolChain. | |
57 | */ | |
58 | protected ConcurrentLinkedQueue<ProtocolChain> protocolChains; | |
59 | ||
60 | ||
61 | 123 | public DefaultProtocolChainInstanceHandler() { |
62 | 123 | protocolChains = new ConcurrentLinkedQueue<ProtocolChain>(); |
63 | 123 | } |
64 | ||
65 | ||
66 | /** | |
67 | * Return a pooled instance of ProtocolChain. If the pool is empty, | |
68 | * a new instance of ProtocolChain will be returned. | |
69 | * @return <tt>ProtocolChain</tt> | |
70 | */ | |
71 | public ProtocolChain poll() { | |
72 | 30 | ProtocolChain protocolChain = protocolChains.poll(); |
73 | 30 | if (protocolChain == null){ |
74 | 30 | protocolChain = new DefaultProtocolChain(); |
75 | } | |
76 | 30 | return protocolChain; |
77 | } | |
78 | ||
79 | ||
80 | /** | |
81 | * Offer (add) an instance of ProtocolChain to this instance pool. | |
82 | * @param protocolChain - <tt>ProtocolChain</tt> to offer / add to the pool | |
83 | * @return boolean, if <tt>ProtocolChain</tt> was successfully added | |
84 | * to the pool | |
85 | */ | |
86 | public boolean offer(ProtocolChain protocolChain) { | |
87 | 161357 | return protocolChains.offer(protocolChain); |
88 | } | |
89 | ||
90 | } |