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WaitingTest.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 *
 * 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
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 * http://www.netbeans.org/cddl-gplv2.html
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 */

package simple.cpu;

public class WaitingTest {
    //~ Static fields/initializers -----------------------------------------------------------------------------------------------

    public static Object mutex = new Object();

    //~ Instance fields ----------------------------------------------------------------------------------------------------------

    long run = 0;
    long sleep = 0;
    long wait = 0;

    //~ Constructors -------------------------------------------------------------------------------------------------------------

    public WaitingTest() {
    }

    //~ Methods ------------------------------------------------------------------------------------------------------------------

    public static void main(String[] args) {
        System.out.println("Start app: " + System.currentTimeMillis());

        WaitingTest test = new WaitingTest();

        for (int i = 0; i < 2; i++) {
            test.method1000();
            System.out.println("sleep: " + test.sleep);
            System.out.println("wait: " + test.wait);
            System.out.println("run: " + test.run);
        }

        System.out.println("Finish app: " + System.currentTimeMillis());
    }

    public void method1000() {
        sleep = 0;
        run = 0;
        wait = 0;

        long time = System.currentTimeMillis();

        while ((System.currentTimeMillis() - time) < 1000) {
            ;
        }

        run += (System.currentTimeMillis() - time);
        time = System.currentTimeMillis();

        synchronized (mutex) {
            try {
                mutex.wait(1000);
            } catch (InterruptedException ex) {
                ex.printStackTrace();
            }
        }

        wait += (System.currentTimeMillis() - time);
        time = System.currentTimeMillis();

        while ((System.currentTimeMillis() - time) < 1000) {
            ;
        }

        run += (System.currentTimeMillis() - time);
        time = System.currentTimeMillis();

        try {
            Thread.sleep(1000);
        } catch (InterruptedException ex) {
        }

        sleep += (System.currentTimeMillis() - time);
    }
}

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