자바 루틴 연습(다 중 루틴[잠 금 문제])

1018 단어 자바
/*
 *     2   :
 *1,    
 *2,          
 *
 *           
 */
public class TestDeadLock implements Runnable {
	public int flag = 1;

	static Object o1 = new Object();
	static Object o2 = new Object();

	public void run() {
		System.out.println("flag=" + flag);
		if(flag == 1) {
			synchronized(o1) {
				try {
					Thread.sleep(500);
				} catch(InterruptedException e) {
					e.printStackTrace();
				}
				synchronized(o2) {
					System.out.println("1");
				}

			}
		}

		if(flag == 0) {
			synchronized(o2) {
				try {
					Thread.sleep(500);
				} catch(InterruptedException e) {
					e.printStackTrace();
				}
				synchronized(o1) {
					System.out.println("0");
				}

			}
		}
	}

	public static void main(String[] args) {
		TestDeadLock td1 = new TestDeadLock();
		TestDeadLock td2 = new TestDeadLock();
		td1.flag = 1;// flag       
		td2.flag = 0;
		Thread t1 = new Thread(td1);
		Thread t2 = new Thread(td2);
		t1.start();
		t2.start();

	}


}

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