生产者消费者模型--管程法 信号灯法

wait\notify

管程法

package Thread.Demo10;

/**
 * 等待\唤醒，wait\notify
 * 消费者生产者模型--》利用缓冲区解决问题：管程法
 * @author liu
 */

//生产者，消费者，产品，缓冲区
public class ProductorModem {
    public static void main(String[] args) {
        SynContainer container = new SynContainer();
        new Productor(container).start();
        new Consumer(container).start();
    }
}


//生产者
class Productor extends Thread {
    SynContainer container;

    public Productor(SynContainer container) {
        this.container = container;
    }

    @Override
    public void run() {
        //生产了i只鸡
        for (int i = 0; i < 100; i++) {
            container.push(new Chickden(i));
            System.out.println("生产了" + i + "只鸡");
        }
    }
}

//消费者
class Consumer extends Thread {
    SynContainer container;

    public Consumer(SynContainer container) {
        this.container = container;
    }

    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            System.out.println("消费了--》" + container.pop().id + "只鸡");
        }
    }
}


//产品
class Chickden {
    int id;//产品编号

    public Chickden(int id) {
        this.id = id;
    }
}


//缓冲区
class SynContainer {
    //需要一个容器大小
    Chickden[] chickdens = new Chickden[10];
    //容器计数器
    int count = 0;

    //生产者放入产品
    public synchronized void push(Chickden chickden) {
        //如果容器满了，就需要等待消费
        if (count == chickdens.length) {
            //通知消费者消费，生产者等待
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        //如果没满，我们需要继续丢入产品
        chickdens[count] = chickden;
        count++;
        //通知消费者消费
        this.notifyAll();
    }

    //消费者消费
    public synchronized Chickden pop() {
        //判断能否消费
        if (count == 0) {
            //等待消费者生产
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        //如果可以消费
        count--;
        Chickden chickden = chickdens[count];
        //吃完了，通知生产者生产
        this.notifyAll();
        return chickden;
    }
}

信号灯法

package Thread.Demo10;

public class xinhaodengfa {
    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();
    }
}


class Player extends Thread {
    TV tv;

    public Player(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if (i % 2 == 0) {
                this.tv.play("快乐大本营");
            } else {
                this.tv.play("西游记");
            }
        }
    }
}

class Watcher extends Thread {
    TV tv;

    public Watcher(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.watch();
        }
    }
}

class TV {
    String voice;
    boolean flag = true;

    //演员表演，观众等待  T
    public synchronized void play(String voice) {
        if (!flag) {
            this.voice = voice;
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();

            }
        }
        System.out.println("演员表演：" + voice);
        this.notifyAll();
        this.flag = !this.flag;
    }

    //观众看，演员等待   F
    public synchronized void watch() {
        if (flag) {
            this.voice = voice;
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观众看：" + voice);
        this.notifyAll();
        this.flag = !this.flag;
    }
}