01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common Development
08: * and Distribution License("CDDL") (collectively, the "License"). You
09: * may not use this file except in compliance with the License. You can obtain
10: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
11: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
12: * language governing permissions and limitations under the License.
13: *
14: * When distributing the software, include this License Header Notice in each
15: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
16: * Sun designates this particular file as subject to the "Classpath" exception
17: * as provided by Sun in the GPL Version 2 section of the License file that
18: * accompanied this code. If applicable, add the following below the License
19: * Header, with the fields enclosed by brackets [] replaced by your own
20: * identifying information: "Portions Copyrighted [year]
21: * [name of copyright owner]"
22: *
23: * Contributor(s):
24: *
25: * If you wish your version of this file to be governed by only the CDDL or
26: * only the GPL Version 2, indicate your decision by adding "[Contributor]
27: * elects to include this software in this distribution under the [CDDL or GPL
28: * Version 2] license." If you don't indicate a single choice of license, a
29: * recipient has the option to distribute your version of this file under
30: * either the CDDL, the GPL Version 2 or to extend the choice of license to
31: * its licensees as provided above. However, if you add GPL Version 2 code
32: * and therefore, elected the GPL Version 2 license, then the option applies
33: * only if the new code is made subject to such option by the copyright
34: * holder.
35: */
36:
37: /*
38: * ProcessorPool.java
39: *
40: * @author Mike Grogan
41: * Created on March 23, 2006, 1:08 PM
42: *
43: */
44:
45: package com.sun.xml.ws.rm.jaxws.runtime.client;
46:
47: import com.sun.xml.ws.api.pipe.Pipe;
48: import com.sun.xml.ws.api.pipe.PipeCloner;
49: import java.util.concurrent.ArrayBlockingQueue;
50: import java.util.Stack;
51:
52: /**
53: * Pool of Pipelines used by RMClientPipe to insure that
54: * no two invocations of nextPipe.process() are done concurrently.
55: */
56: @SuppressWarnings("unchecked")
57: public class ProcessorPool<T extends Pipe> extends Stack<T> {
58:
59: private T pipe;
60: private int capacity;
61: private int length = 0;
62:
63: public ProcessorPool(T pipe) {
64: this (pipe, 5);
65: }
66:
67: /** Creates a new instance of ProcessorPool */
68: public ProcessorPool(T pipe, int capacity) {
69: this .capacity = capacity;
70: this .pipe = pipe;
71:
72: }
73:
74: public synchronized T checkOut() {
75: try {
76: if (!empty()) {
77: return pop();
78: } else if (length < capacity) {
79: length++;
80: return (T) PipeCloner.clone(pipe);
81: } else {
82: while (empty()) {
83: wait();
84: }
85: return pop();
86: }
87: } catch (InterruptedException e) {
88: }
89: return null;
90: }
91:
92: public synchronized void checkIn(T in) {
93: push(in);
94: notifyAll();
95: }
96:
97: }
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