AtomicStampedReference_automicstampedreference-优快云博客

本文通过一个具体的示例演示了如何使用Java中的AtomicStampedReference来解决多线程环境下充值和消费操作的数据一致性问题，展示了其在并发场景下避免竞态条件的应用。

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package thread;

import java.util.concurrent.atomic.AtomicStampedReference;

public class AutomicStampedReferenceDemo {
	static AtomicStampedReference<Integer> money = new AtomicStampedReference<Integer>(19, 0);

	public static void main(String[] args) {

//模拟多线程同时更新后台数据，为用户充值，
		for (int i = 0; i < 3; i++) {
			final int timestamp = money.getStamp();
			new Thread() {
				public void run() {
					while (true) {
						while (true) {
							Integer m = money.getReference();

                                                    //充值一次

if (m < 20) {if (money.compareAndSet(m, m + 20, timestamp, timestamp + 1)) {System.out.println("余额小于20，充值成功，余额：" + money.getReference() + "元");break;}} else {break;}}}}}.start();}new Thread() {public void run(){for(int i=0;i<100;i++){while(true){int timestamp = money.getStamp();Integer m = money.getReference();if(m>10){if(money.compareAndSet(m, m-10, timestamp, timestamp+1)){System.out.println("成功消费10元，余额："+money.getReference());break;}}else{System.out.println("没有足够金额");break;}}try {Thread.sleep(100);} catch (InterruptedException e) {e.printStackTrace();}}}}.start();}}