package com.lei.study03;

//測試：生產者消費者模型-->利用緩衝區解決：管程法

//生產者，消費者，產品，緩衝區
public class TestPc extends Thread{
    public static void main(String[] args) {
        SynContainer synContainer = new SynContainer();

        new Productor(synContainer).start();
        new Customer(synContainer).start();
    }
}

//生產者
class Productor extends Thread {
    SynContainer container;

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

    //生產
    @Override
    public void run() {
        for (int i = 1; i <=100; i++) {
            System.out.println("生產了第" + i + "只雞");
            container.push(new Chicken(i));
        }
    }
}
//消費者
class Customer extends Thread{
    SynContainer container;

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

    //消費
    @Override
    public void run() {
        for (int i = 1; i <=100; i++) {
            System.out.println("消費了第-->"+container.pop().id+"只雞");
        }
    }
}

//產品
class Chicken{
    int id;//產品編號

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

//緩衝區
class SynContainer{

    //需要一個容器大小
    Chicken[] chickens=new Chicken[10];

    //計數器
    int count=0;

    //生產者放入產品
    public synchronized void push(Chicken chicken){

        //如果容器滿了，則等待消費者消費
        if(count==chickens.length){
            //通知消費者消費，生產等待
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        //如果沒有滿則丟入產品
        chickens[count]=chicken;
        count++;

        //可以通知消費者消費了
        this.notifyAll();
    }

    //消費者消費產品
    public synchronized Chicken pop(){
        //判斷能否消費
        if(count==0){
            //等待生產者生產，消費者等待
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        //如果可以消費
        count--;
        Chicken chicken=chickens[count];
        this.notifyAll();
        //吃完了，通知生產者生產
        return chicken;
    }
}