JDK8/Java8源码在线阅读

/*
 * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.tools.jconsole;

import java.util.*;

public class Worker extends Thread {
    ArrayList<Runnable> jobs = new ArrayList<Runnable>();
    private boolean stopped = false;

    public Worker(String name) {
        super("Worker-"+name);

        setPriority(NORM_PRIORITY - 1);
    }

    public void run() {
        while (!isStopped()) {
            Runnable job;
            synchronized(jobs) {
                while (!isStopped() && jobs.size() == 0) {
                    try {
                        jobs.wait();
                    } catch (InterruptedException ex) {
                    }
                }

                if(isStopped()) break;

                job = jobs.remove(0);
            }
            job.run();
        }
    }

    private synchronized boolean isStopped() {
        return stopped;
    }

    public synchronized void stopWorker() {
        stopped = true;
        synchronized(jobs) {
            jobs.notify();
        }
    }


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