用jstack和jconsole如何定位死锁位置

偏执的太偏执、 2023-09-24 17:08 61阅读 0赞

# 代码 #

public class Test5 extends Thread {
        
        public static void main(String[] args) throws InterruptedException {
        
            Object A = new Object();
            Object B = new Object();
            Thread t1 = new Thread(() -> {
        
                synchronized (A) {
        
                    log.debug("lock A");
                    try {
        
                        sleep(2);
                    } catch (InterruptedException e) {
        
                        throw new RuntimeException(e);
                    }
                    synchronized (B) {
        
                        log.debug("lock B");
                        log.debug("操作...");
                    }
                }
            }, "t1");
            Thread t2 = new Thread(() -> {
        
                synchronized (B) {
        
                    log.debug("lock B");
                    try {
        
                        sleep(1);
                    } catch (InterruptedException e) {
        
                        throw new RuntimeException(e);
                    }
                    synchronized (A) {
        
                        log.debug("lock A");
                        log.debug("操作...");
                    }
                }
            }, "t2");
            t1.start();
            t2.start();
    
        }
    }

# 运行结果 #

10:29:05.934 c.Test5 [t1] - lock A
    10:29:05.934 c.Test5 [t2] - lock B

# 方法1：使用jstack #

![在这里插入图片描述][af2775efe6f6498a92ecc47f80931bcf.png]  
![在这里插入图片描述][72d2ecf091f8421899833694b2d9927f.png]

# 方法2：使用jconsole #

![在这里插入图片描述][39e5229193b14a5d9d55d74617166425.png]  
![在这里插入图片描述][50aed9919aa34d5f8f335e698b2a03f0.png]  
![在这里插入图片描述][bbb266f12171426a924b8ae98bddf4ae.png]  
![在这里插入图片描述][a738f6a048e847bf918634153716de98.png]

[af2775efe6f6498a92ecc47f80931bcf.png]: https://img-blog.csdnimg.cn/af2775efe6f6498a92ecc47f80931bcf.png
[72d2ecf091f8421899833694b2d9927f.png]: https://img-blog.csdnimg.cn/72d2ecf091f8421899833694b2d9927f.png
[39e5229193b14a5d9d55d74617166425.png]: https://img-blog.csdnimg.cn/39e5229193b14a5d9d55d74617166425.png
[50aed9919aa34d5f8f335e698b2a03f0.png]: https://img-blog.csdnimg.cn/50aed9919aa34d5f8f335e698b2a03f0.png
[bbb266f12171426a924b8ae98bddf4ae.png]: https://img-blog.csdnimg.cn/bbb266f12171426a924b8ae98bddf4ae.png
[a738f6a048e847bf918634153716de98.png]: https://img-blog.csdnimg.cn/a738f6a048e847bf918634153716de98.png