多线程（7）

线程协作  生产者--消费者模式-->管程法

生产者、负责生产数据的模块

消费者、负责处理数据的模块

缓冲区、生产者将生产好的数据放入缓冲区，消费者从缓冲区拿出处理

package com.Thread.lesson04;

/**
 * 生产者消费者模型-->利用缓冲区解决：管程法
 */
public class TestPC {
    public static void main(String[] args) {
        SynContainer synContainer = new SynContainer();

        new Producer(synContainer).start();
        new Consumer(synContainer).start();
    }
}
//生产者
class Producer extends Thread{

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

    //生产
    @Override
    public void run() {
        for (int i = 1; i < 100; i++) {
            container.push(new Chicken(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;
    }

    //消费
    @Override
    public void run() {
        for (int i = 1; i < 100; i++) {
            System.out.println("消费了-->"+container.pop().id+"只鸡");
        }
    }
}
//产品
class Chicken{
    int id;
    public Chicken(int id){
        this.id = id;
    }
}
//缓冲区
class SynContainer{

    //需要一个容器大小
    Chicken[] chickens = new Chicken[10];
    int count = 0;//容器计数器

    //生产者放入产品
    public synchronized void push(Chicken chicken){
        //如果容器满了，等待消费者消费
        if (count==chickens.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，放入产品
        chickens[count] = chicken;
        count++;

        //可以通知消费者消费了
        this.notifyAll();
    }
    //消费者消费产品
    public synchronized Chicken pop(){
        //判断能否消费
        if (count ==0 ){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        //如果可以消费
        count--;
        Chicken chicken = chickens[count];

        //吃完了，通知生产者生产
        this.notifyAll();
        return chicken;
    }
}

还有一个信号灯法

package com.Thread.lesson04;

import java.io.Reader;
import java.util.concurrent.CountDownLatch;

public class TestPC2 {
    public static void main(String[] args) {
        TV tv = new TV();

        new Performer(tv).start();
        new Watcher(tv).start();
    }
}
//生产者-->演员
class Performer extends Thread {
    TV tv;
    public Performer(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if (i%2==0){
                this.tv.play("刀剑神域");
            }else{
                this.tv.play("序列之争");
            }
        }
    }
}
//消费者-->观众
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();
        }
    }
}
//产品-->节目
class TV{
    //演员表演 T
    //观众观看 F
    boolean flag = true;
    String voice;//表演的节目

    //表演
    public synchronized void play(String voice){

        if (!flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("演员表演了："+voice);
        //通知观众观看
        this.notifyAll();
        this.voice = voice;
        this.flag = !this.flag;
    }

    //观看
    public synchronized void watch(){
        if (flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观众观看了："+voice);

        this.notifyAll();
        this.voice = voice;
        this.flag = !this.flag;
    }
}