生产者消费者程序练手

Posted 2023-02-03 vanpersie_9987

写一段生产者、消费者的程序：

//资源
class Meal 
    private final int orderNum;
    public Meal(int orderNum)  
        this.orderNum = orderNum;
    
    @Override
    public String toString() 
        return "Meal " + orderNum;
    



//服务生 消费者
class WaitPerson implements Runnable 
    private Restaurant restaurant;
    public WaitPerson(Restaurant restaurant) 
        this.restaurant = restaurant;
    
    @Override
    public void run() 
        try 
            while(!Thread.interrupted()) 
                synchronized(this) 
                    while(restaurant.meal == null) 
                        this.wait();
                    
                
                System.out.println("WaitPerson got " + restaurant.meal);
                synchronized(restaurant.chef) 
                    restaurant.meal = null;
                    restaurant.chef.notify();
                
            
         catch(InterruptedException e) 
            System.out.println("WaitPerson Interrupted");
        
    



//厨师 生产者
class Chef implements Runnable 
    private int count = 0; 
    private Restaurant restaurant;
    public Chef(Restaurant restaurant) 
        this.restaurant = restaurant;
    
    @Override
    public void run() 
        try 
            while(!Thread.interrupted()) 
                synchronized(this) 
                    while(restaurant.meal != null) 
                        this.wait();
                    
                
                if(++count == 10) 
                    System.out.println("System Quit");
                    restaurant.exec.shutdownNow();
                    System.exit(0);
                
                System.out.print("Order up! ");
                synchronized(restaurant.waitPerson) 
                    restaurant.meal = new Meal(count);
                    restaurant.waitPerson.notify();
                
                TimeUnit.MILLISECONDS.sleep(100);
            
         catch(InterruptedException e) 
            System.out.print("Chef Interrupted");
        
    



//餐馆
public class Restaurant 
    Meal meal;
    WaitPerson waitPerson = new WaitPerson(this);
    Chef chef = new Chef(this);
    ExecutorService exec = Executors.newCachedThreadPool();
    public Restaurant() 
        exec.execute(waitPerson);
        exec.execute(chef);

    
    public static void main(String[] args) 
        new Reataurant();
    

看看哪有错。。。应该没错