线程随笔-测试deadlock

package test.Thread;

public class testDeadLock {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		deadRunner r1 = new deadRunner();
		r1.flag = 1;
		deadRunner r2 = new deadRunner();
		r2.flag = 2;

		Thread t1 = new Thread(r1);
		Thread t2 = new Thread(r2);
		
		t1.start();
		t2.start();
	}

}

class deadRunner implements Runnable {

	int flag = 1;
	static Object o1 = new Object();
	static Object o2 = new Object();

	public void run() {
		// TODO Auto-generated method stub
		System.out.println("flag=" + flag);
		if (1 == flag) {
			synchronized (o1) {
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				synchronized (o2) {
					System.out.println("this is flag 1");
				}
			}
		}

		if (0 == flag) {
			synchronized (o2) {
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				synchronized (o1) {
					System.out.println("this is flag 2");
				}
			}
		}
	}

}

 

the result is:

 

flag=1
flag=2

 

评论

2 楼 浴盆儿 2008-09-09  

哦，这个我当时发现了，粘贴的时候没改过来，多谢指出

1 楼 mudong 2008-09-09  

你这段代码能产生死锁？？？
你不是在搞笑么？
应该改成这样才行
static   Object o1 = new Object(); 
static  Object o2 = new Object();