生产者消费者模型 - Storage

import java.util.LinkedList;

/**
 * 仓库类Storage实现缓冲区
 * 
 * @author MONKEY.D.MENG 2011-03-15
 * 
 */
public class Storage
{
	// 仓库最大存储量
	private final int MAX_SIZE = 100;

	// 仓库存储的载体
	private LinkedList<Object> list = new LinkedList<Object>();

	// 生产num个产品
	public void produce(int num)
	{
		// 同步代码段
		synchronized (list)
		{
			// 如果仓库剩余容量不足
			while (list.size() + num > MAX_SIZE)
			{
				System.out.println("【要生产的产品数量】:" + num + "\t【库存量】:"
				        + list.size() + "\t暂时不能执行生产任务!");
				try
				{
					// 由于条件不满足，生产阻塞
					list.wait();
				}
				catch (InterruptedException e)
				{
					e.printStackTrace();
				}
			}

			// 生产条件满足情况下，生产num个产品
			for (int i = 1; i <= num; ++i)
			{
				list.add(new Object());
			}

			System.out.println("【已经生产产品数】:" + num + "\t【现仓储量为】:" + list.size());

			list.notifyAll();
		}
	}

	// 消费num个产品
	public void consume(int num)
	{
		// 同步代码段
		synchronized (list)
		{
			// 如果仓库存储量不足
			while (list.size() < num)
			{
				System.out.println("【要消费的产品数量】:" + num + "\t【库存量】:"
				        + list.size() + "\t暂时不能执行消费任务!");
				try
				{
					// 由于条件不满足，消费阻塞
					list.wait();
				}
				catch (InterruptedException e)
				{
					e.printStackTrace();
				}
			}

			// 消费条件满足情况下，消费num个产品
			for (int i = 1; i <= num; ++i)
			{
				list.remove();
			}

			System.out.println("【已经消费产品数】:" + num + "\t【现仓储量为】:" + list.size());

			list.notifyAll();
		}
	}

	// get/set方法
	public LinkedList<Object> getList()
	{
		return list;
	}

	public void setList(LinkedList<Object> list)
	{
		this.list = list;
	}

	public int getMAX_SIZE()
	{
		return MAX_SIZE;
	}
}
/**
 * 生产者类Producer继承线程类Thread
 * 
 * Email:530025983@qq.com
 * 
 * @author MONKEY.D.MENG 2011-03-15
 * 
 */
class Producer extends Thread
{
	// 每次生产的产品数量
	private int num;

	// 所在放置的仓库
	private Storage storage;

	// 构造函数，设置仓库
	public Producer(Storage storage)
	{
		this.storage = storage;
	}

	// 线程run函数
	public void run()
	{
		produce(num);
	}

	// 调用仓库Storage的生产函数
	public void produce(int num)
	{
		storage.produce(num);
	}

	// get/set方法
	public int getNum()
	{
		return num;
	}

	public void setNum(int num)
	{
		this.num = num;
	}

	public Storage getStorage()
	{
		return storage;
	}

	public void setStorage(Storage storage)
	{
		this.storage = storage;
	}
}
/**
 * 消费者类Consumer继承线程类Thread
 * 
 * Email:530025983@qq.com
 * 
 * @author MONKEY.D.MENG 2011-03-15
 * 
 */
class Consumer extends Thread
{
	// 每次消费的产品数量
	private int num;

	// 所在放置的仓库
	private Storage storage;

	// 构造函数，设置仓库
	public Consumer(Storage storage)
	{
		this.storage = storage;
	}

	// 线程run函数
	public void run()
	{
		consume(num);
	}

	// 调用仓库Storage的生产函数
	public void consume(int num)
	{
		storage.consume(num);
	}

	// get/set方法
	public int getNum()
	{
		return num;
	}

	public void setNum(int num)
	{
		this.num = num;
	}

	public Storage getStorage()
	{
		return storage;
	}

	public void setStorage(Storage storage)
	{
		this.storage = storage;
	}
}
/**
 * 测试类Test
 * 
 * Email:530025983@qq.com
 * 
 * @author MONKEY.D.MENG 2011-03-15
 * 
 */
class Test
{
	public static void main(String[] args)
	{
		// 仓库对象
		Storage storage = new Storage();

		// 生产者对象
		Producer p1 = new Producer(storage);
		Producer p2 = new Producer(storage);
		Producer p3 = new Producer(storage);
		Producer p4 = new Producer(storage);
		Producer p5 = new Producer(storage);
		Producer p6 = new Producer(storage);
		Producer p7 = new Producer(storage);

		// 消费者对象
		Consumer c1 = new Consumer(storage);
		Consumer c2 = new Consumer(storage);
		Consumer c3 = new Consumer(storage);

		// 设置生产者产品生产数量
		p1.setNum(10);
		p2.setNum(10);
		p3.setNum(10);
		p4.setNum(10);
		p5.setNum(10);
		p6.setNum(10);
		p7.setNum(80);

		// 设置消费者产品消费数量
		c1.setNum(50);
		c2.setNum(20);
		c3.setNum(30);

		// 线程开始执行
		c1.start();
		c2.start();
		c3.start();
		p1.start();
		p2.start();
		p3.start();
		p4.start();
		p5.start();
		p6.start();
		p7.start();
	}
}