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Groovy example source code file (prodcons.java)

This example Groovy source code file (prodcons.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

consumer, consumer, cubbyhole, cubbyhole, exception, interruptedexception, interruptedexception, producer, producer, thread

The Groovy prodcons.java source code

// $Id: prodcons.java,v 1.1 2004-05-23 07:14:28 bfulgham Exp $
// http://www.bagley.org/~doug/shootout/
// Producer-Consumer Example by Bill Lear
// Adapted from http://java.sun.com/docs/books/tutorial/essential/threads

public class prodcons {
    private class CubbyHole {
        private int m_contents;
        private boolean m_available = false;

        public synchronized int get() {
            while (m_available == false) {
                try {
                    wait();
                } catch (InterruptedException e) { }
            }
            m_available = false;
            notifyAll();
            return m_contents;
        }

        public synchronized void put(int value) {
            while (m_available == true) {
                try {
                    wait();
                } catch (InterruptedException e) { }
            }
            m_contents = value;
            m_available = true;
            notifyAll();
        }
    }

    private class Producer extends Thread {
        private CubbyHole m_cubbyhole;
        private int m_count;

        public Producer(CubbyHole c, int count) {
            m_cubbyhole = c;
            m_count = count;
        }

        public void run() {
            for (int i = 0; i < m_count; i++) {
                m_cubbyhole.put(i);
                ++m_produced;
            }
        }
    }

    private class Consumer extends Thread {
        private CubbyHole m_cubbyhole;
        private int m_count;

        public Consumer(CubbyHole c, int count) {
            m_cubbyhole = c;
            m_count = count;
        }

        public void run() {
            int value = 0;
            for (int i = 0; i < m_count; i++) {
                value = m_cubbyhole.get();
                ++m_consumed;
            }
        }
    }

    public void run() {
        m_producer.start();
        m_consumer.start();
        try { m_producer.join(); } catch (InterruptedException e) { }
        try { m_consumer.join(); } catch (InterruptedException e) { }
        System.out.println(m_produced + " " + m_consumed);
    }

    public prodcons(int count) {
        CubbyHole m_cubbyhole = new CubbyHole();
        m_producer = new Producer(m_cubbyhole, count);
        m_consumer = new Consumer(m_cubbyhole, count);
    }

    public static void main(String[] args) {
        int count = 1;
        try { count = Integer.parseInt(args[0]); } catch (Exception e) { }
        new prodcons(count).run();
    }

    private Producer m_producer;
    private Consumer m_consumer;
    private int m_produced = 0;
    private int m_consumed = 0;
}

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