ReentrentLock对此对象或超级对象

Question

在深入研究Java并发性的同时，我在 Java Concurrency in practice

中找到了一个Reenterant锁定机制的示例

public class Widget {
     public synchronized void doSomething() {
...
}
}
public class LoggingWidget extends Widget {
   public synchronized void doSomething() {
       System.out.println(toString() + ": calling doSomething");
       super.doSomething(); // which object is locked this or super
   }
}

调用方法LoggingWidget.doSomething() LoggingWidget 对象的锁定由线程获取。此方法还在方法中调用super.doSomething()。调用super.doSomething()，Widget或LoggingWidget？

时，哪个对象已被锁定