java实现线程同步一个生产者和一个消费者

最新推荐文章于 2021-08-27 16:30:17 发布

crazy__chen

最新推荐文章于 2021-08-27 16:30:17 发布

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分类专栏： java

本文链接：https://blog.youkuaiyun.com/crazy__chen/article/details/44063595

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本文探讨了并发编程中线程间的同步与通信机制，通过使用Java语言实例，详细介绍了如何利用synchronized关键字和wait/notify机制实现线程间的协作与资源竞争的解决。

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package test;

import java.util.Scanner;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;


public class Test{	
	static Scanner sc = new Scanner(System.in);
	static String line;
	
	static class Food{
		static int id = 0;
		private int mid = id++;
		public Food() {
			
		}
		
		@Override
		public String toString() {			
			return "食物id="+mid;
		}
	}
	static Food f = null;
	static class Producer implements Runnable{
		@Override
		public void run() {
			while(!Thread.interrupted()){
				synchronized (this) {//等待过程,对应消费过程，所以应该上锁
					while(f!=null){
						try {
							wait();
						} catch (InterruptedException e) {
							e.printStackTrace();
						}
					}
				}
				System.out.println("生产");
				synchronized (c) {				
					f = new Food();					
					c.notifyAll();
				}
			}			
		}		
	}
	
	static class Comsumer implements Runnable{
		@Override
		public void run() {			
			while(!Thread.interrupted()){
				synchronized (this) {
					while(f==null){
						try {
							wait();
						} catch (InterruptedException e) {
							e.printStackTrace();
						}
					}
				}
				System.out.println("消费"+f);
				synchronized (p) {
					f = null;
					p.notifyAll();
				}
			}			
		}		
	}
	
	static Producer p = new Producer();
	static Comsumer c = new Comsumer();
	public static void main(String[] args) {		
		ExecutorService exe = Executors.newCachedThreadPool();
		exe.execute(p);
		exe.execute(c);
	}
}