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jdk 5.0之后的生产者消费者 改进版

发表于: 2014-08-25   作者:annan211   来源:转载   浏览:
摘要: package threadJDK5; import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; public class ThreadTestJDK5 { publ
package threadJDK5;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class ThreadTestJDK5 {
	public static void main(String[] args) {
		Resource r = new Resource();

		Producer p = new Producer(r);
		Consumer c = new Consumer(r);

		Thread t1 = new Thread(p);
		Thread t2 = new Thread(c);

		t1.start();
		t2.start();
	}
}

class Resource{
	private String name;
	private int num;
	private boolean flag;
	private Lock lock = new ReentrantLock();
	// 生产者锁
	private Condition condition_pro = lock.newCondition();
	//消费者锁
	private Condition condition_con = lock.newCondition();
	public void set(Resource r) throws InterruptedException{
		lock.lock();
		if(!r.flag){
			if(num % 2 == 0){
				this.name = "张三------" + num++;
			}else{
				this.name = "丽丽------" + num++;
			}
			System.out.println("生产..."+this.name);
			r.flag = true;
			condition_con.signal();
		}else{
			try {
				condition_pro.await();
			}  finally{
				lock.unlock();
			}
		}
	}

	public void out(Resource r) throws InterruptedException{
		lock.lock();
		if(r.flag){
			System.out.println("消费..."+r.name);
			r.flag = false;
			condition_pro.signal();
		}else{
			try {
				condition_con.await();
			} finally{
				lock.unlock();
			}
		}
	}
}

class Producer implements Runnable{
	private Resource r;
	public Producer(Resource r){
		this.r = r;
	}
	public void run(){
		while(true){
			try {
				r.set(r);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}

class Consumer implements Runnable{
	private Resource r;
	public Consumer(Resource r){
		this.r = r;
	}
	public void run(){
		while(true){
			try {
				r.out(r);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}

jdk 5.0之后的生产者消费者 改进版

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