一个死锁发生的例子--Lock

待我称王封你为后i 2021-09-27 08:28 375阅读 0赞

接上一篇博客，使用Lock实现死锁

import java.util.concurrent.locks.Lock;
    import java.util.concurrent.locks.ReentrantLock;
    
    public class DeadlockLock {
        private static Lock lock1 = new ReentrantLock();
        private static Lock lock2 = new ReentrantLock();
    
        public static void main(String[] args) {
                // TODO Auto-generated method stub
            Thread thread1 = new Thread(new Runnable() {
                @Override
                public void run() {
                    lock1.lock();//获取锁1
                    System.out.println(Thread.currentThread().getName()+"获取了lock1");
                    try {
                        Thread.sleep(500);
                    }catch (InterruptedException ex){
                        ex.printStackTrace();
                    }
                    lock2.lock();
                    System.out.println(Thread.currentThread().getName()+"获取了lock2");
                    lock2.unlock();
                    lock1.unlock();
                }
            },"thread1");
            Thread thread2 = new Thread(new Runnable() {
                @Override
                public void run() {
                    lock2.lock();//获取锁2
                    System.out.println(Thread.currentThread().getName()+"获取了lock2");
                    try {
                        Thread.sleep(500);
                    }catch (InterruptedException ex){
                        ex.printStackTrace();
                    }
                    lock1.lock();
                    System.out.println(Thread.currentThread().getName()+"获取了lock1");
                    lock1.unlock();
                    lock2.unlock();
                }
            },"thread2");
            thread1.start();
            thread2.start();
        }
    }