生产者与消费者--多线程的线程安全与线程间的通信_c++单线程之间实现生产者消费者-优快云博客

本文链接：https://blog.youkuaiyun.com/aachen0/article/details/79645852

本文通过Java实现了一个典型的生产者消费者模式案例，利用多线程技术模拟了两个制饼者不停制作大炊饼和小烧饼，同时两个消费者不断消费这些饼的过程。该程序使用synchronized关键字和wait、notify方法来协调生产和消费行为。

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package 归档;

import java.util.LinkedList;

/**
 * @autor aachen0
 * @create 2018/3/20 20:33
 * IDE:IntelliJ IDEA
 */
public class PanCake {
    public static void main(String[] args) {
        LinkedList<String> cakes = new LinkedList<>();
        Maker wdl = new Maker("武大郎", cakes);
        Maker sj = new Maker("宋江", cakes);
    
        Eater pjl = new Eater("潘金莲", cakes);
        Eater ws=new Eater("武松",cakes);
        
        wdl.start();
        sj.start();
        pjl.start();
        ws.start();
    }
}

class Maker extends Thread {
    private String name;//做饼人
    private LinkedList<String> cakes;//饼笼
    
    Maker(String name, LinkedList<String> cakes) {
        this.name = name;
        this.cakes = cakes;
    }
    
    @Override
    public void run() {
        int index = 0;
        while (true) {
            synchronized (cakes) {
                try {
                    sleep(500);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                cakes.add(((index % 2 == 0) ? "大炊饼" : "小烧饼") + ++index);
                    System.out.println(name+"做好了第" + index + "个");
                if (cakes.size() >10) {
                    try {
                        System.out.println("饼筐满了，快来买啊！");
                        cakes.notify();
                        cakes.wait();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }
}

class Eater extends Thread {
    private String name;
    private LinkedList<String> cakes;
    
    Eater(String name, LinkedList<String> cakes) {
        this.name = name;
        this.cakes = cakes;
    }
    
    @Override
    public void run() {
        while (true) {
            synchronized (cakes) {
                if (cakes.size() > 0) {
                    System.out.println(name+"拿起一块" + cakes.pop() + "吃起来真开心");
                    try {
                        sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                } else {
                    System.out.println(name+":哎呀，没东西吃了");
                    try {
                        cakes.notify();
                        cakes.wait();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }
}