/*
 * Copyright (c) 2000, 2017 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

/*
 * @(#)JMSXAWrappedLock.java	1.3 06/27/07
 */

package com.sun.messaging.jmq.jmsclient;

/**
 * JMSXAWrappedLock A simple lock used by JMSXAWrapped classes
 */

public class JMSXAWrappedLock {

    private Thread owner = null;
    private boolean locked = false;

    public JMSXAWrappedLock() {
    }

    public synchronized void acquireLock() {
        Thread me = Thread.currentThread();

        while (locked && owner != me) {
            try {
                wait();
            } catch (InterruptedException e) {
            }
        }

        locked = true;
        owner = me;
    }

    /**
     * caller must have called acquireLock
     */

    public synchronized void releaseLock() {
        // Thread me = Thread.currentThread();

        locked = false;
        owner = null;
        notifyAll();
    }
}
