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ProcessorPool.javaAPI DocExample3464Tue May 29 16:56:42 BST 2007com.sun.xml.ws.rm.jaxws.runtime.client

ProcessorPool.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
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 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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/*
 * ProcessorPool.java
 *
 * @author Mike Grogan
 * Created on March 23, 2006, 1:08 PM
 *
 */

package com.sun.xml.ws.rm.jaxws.runtime.client;
import com.sun.xml.ws.api.pipe.Pipe;
import com.sun.xml.ws.api.pipe.PipeCloner;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.Stack;
/**
 * Pool of Pipelines used by RMClientPipe to insure that
 * no two invocations of nextPipe.process() are done concurrently.
 */
@SuppressWarnings("unchecked")
public class ProcessorPool<T extends Pipe> extends Stack<T> {
    
    private T pipe;
    private int capacity;
    private int length = 0;
    
    public ProcessorPool(T pipe) {
        this(pipe, 5);
    }
    
    /** Creates a new instance of ProcessorPool */
    public ProcessorPool(T pipe, int capacity){
        this.capacity = capacity;
        this.pipe =pipe;
        
        
    }
    
    public synchronized T checkOut() {
        try {
            if (!empty()) {
                return pop();
            } else if (length < capacity) {
                length++;
                return (T)PipeCloner.clone(pipe);
            } else {
                while (empty()) {
                    wait();
                }
                return pop();
            }
        } catch (InterruptedException e) {
        }
        return null;
    } 
    
    public synchronized void checkIn(T in) {
        push(in);
        notifyAll();
    }
    
   
}