82 lines · 2.4 KB · Java
RawDownload
/* * 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();        }    }     public void add(Runnable job) {        synchronized(jobs) {            jobs.add(job);            jobs.notify();        }    }     public boolean queueFull() {        synchronized(jobs) {            return (jobs.size() > 0);        }    }}