Java检测死锁案例_Java教程

Java检测死锁案例

2021-09-23 13:03又起风了 Java教程

这篇文章主要介绍了Java检测死锁案例,本文列举了导致死锁的程序,通过使用jconsole工具进行检测等,讲述了避免死锁的方法,需要的朋友可以参考下

导致死锁的程序

				?

									package com.study.train;

									import java.io.IOException;

									import java.lang.management.ManagementFactory;

									import java.lang.management.ThreadInfo;

									import java.lang.management.ThreadMXBean;

									import java.lang.reflect.Field;

									import java.util.*;

									import java.util.concurrent.ArrayBlockingQueue;

									import java.util.concurrent.ConcurrentHashMap;

									import java.util.concurrent.FutureTask;

									import java.util.concurrent.LinkedBlockingQueue;

									import java.util.concurrent.locks.Lock;

									import java.util.concurrent.locks.ReentrantLock;

									import static java.lang.Thread.yield;

									public class Main extends Thread{

									    private Object o1;

									    private Object o2;

									    Main(Object oa,Object ob,String name) {

									        super(name);

									        o1 = oa;

									        o2 = ob;

									    }

									    @Override

									    public void run() {

									        synchronized (o1) {

									            System.out.println("thread: "+Thread.currentThread().getName() + " get lock");

									            try {

									                Thread.sleep(1000);

									            } catch (InterruptedException e) {

									                e.printStackTrace();

									            }

									            synchronized (o2) {

									                System.out.println("two lock is get");

									            }

									        }

									    }

									    public static void main(String[] args) throws InterruptedException {

									       Object oj1 = new Object();

									       Object oj2 = new Object();

									       Main m1 = new Main(oj1,oj2,"thread1");

									       Main m2 = new Main(oj2,oj1,"thread2");

									       m1.start();

									       m2.start();

									       m1.join();

									       m2.join();

									    }

									}