相关疑难解决方法(0)

我知道复合操作i++不是线程安全的,因为它们涉及多个操作.

但是检查引用本身是一个线程安全的操作？

a != a //is this thread-safe

我尝试编程并使用多个线程,但它没有失败.我想我无法在我的机器上模拟比赛.

编辑:

public class TestThreadSafety {
    private Object a = new Object();

    public static void main(String[] args) {

        final TestThreadSafety instance = new TestThreadSafety();

        Thread testingReferenceThread = new Thread(new Runnable() {

            @Override
            public void run() {
                long countOfIterations = 0L;
                while(true){
                    boolean flag = instance.a != instance.a;
                    if(flag)
                        System.out.println(countOfIterations + ":" + flag);

                    countOfIterations++;
                }
            }
        });

        Thread updatingReferenceThread = new Thread(new Runnable() {

            @Override
            public void run() …