Coverage Report - com.sun.grizzly.util.ConcurrentLinkedQueuePool
 
Classes in this File Line Coverage Branch Coverage Complexity
ConcurrentLinkedQueuePool
100 %
13/13
88 %
7/8
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
 12  
  * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 13  
  * language governing permissions and limitations under the License.
 14  
  * 
 15  
  * When distributing the software, include this License Header Notice in each
 16  
  * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 17  
  * Sun designates this particular file as subject to the "Classpath" exception
 18  
  * as provided by Sun in the GPL Version 2 section of the License file that
 19  
  * accompanied this code.  If applicable, add the following below the License
 20  
  * Header, with the fields enclosed by brackets [] replaced by your own
 21  
  * identifying information: "Portions Copyrighted [year]
 22  
  * [name of copyright owner]"
 23  
  * 
 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]
 28  
  * elects to include this software in this distribution under the [CDDL or GPL
 29  
  * Version 2] license."  If you don't indicate a single choice of license, a
 30  
  * recipient has the option to distribute your version of this file under
 31  
  * either the CDDL, the GPL Version 2 or to extend the choice of license to
 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.util;
 40  
 
 41  
 import java.util.concurrent.ConcurrentLinkedQueue;
 42  
 
 43  
 /**
 44  
  * <code>ObjectPool</code> implementation based on {@link ConcurrentLinkedQueue}
 45  
  * 
 46  
  * @author Alexey Stashok
 47  
  */
 48  93
 public abstract class ConcurrentLinkedQueuePool<E> implements ObjectPool<E> {
 49  
     private volatile ConcurrentLinkedQueue<E> pool;
 50  
 
 51  
     public abstract E newInstance();
 52  
 
 53  
     public E poll() {
 54  1129221
         if (pool == null) {
 55  77
             synchronized(this) {
 56  77
                 if (pool == null) {
 57  76
                     pool = new ConcurrentLinkedQueue<E>();
 58  
                 }
 59  77
             }
 60  
         }
 61  
         
 62  1129221
         E object = pool.poll();
 63  1129219
         if (object == null) {
 64  1297
             object = newInstance();
 65  
         }
 66  
 
 67  1129221
         return object;
 68  
     }
 69  
 
 70  
     public void offer(E object) {
 71  1129196
         if (pool != null) {
 72  1129191
             pool.offer(object);
 73  
         }
 74  1129195
     }
 75  
 }