Java自定义死锁测试，及排查方法

2024 年 6 月 25 日 18点热度 0人点赞 0条评论

准备工具

Intellij IDEA

代码

package com.tony.test.practice;

import java.util.concurrent.TimeUnit;

/** * Created with IntelliJ IDEA. * * @Title: DeadLock * @Auther: 皮蛋布丁 * @Date: 2021/11/25/11:31 * @Description: */
public class DeadLock {
    
    public static void main(String[] args) {
    

        String lockA = "lockA";
        String lockB = "lockB";
        new Thread(new MyThread(lockA,lockB),"T1").start();
        new Thread(new MyThread(lockB,lockA),"T2").start();
    }

}
class MyThread implements Runnable{
    
    private String lockA;
    private String lockB;

    public MyThread(String lockA, String lockB) {
    
        this.lockA = lockA;
        this.lockB = lockB;
    }

    @Override
    public void run() {
    
        synchronized (lockA){
    
            System.out.println(Thread.currentThread().getName()+"lock:"+lockA+" =>get "+lockB);
            try {
    
                TimeUnit.SECONDS.sleep(2);
            } catch (InterruptedException e) {
    
                e.printStackTrace();
            }
            synchronized (lockB){
    
                System.out.println(Thread.currentThread().getName()+"lock:"+lockB+" =>get "+lockA);
            }
        }
    }
}