src/hotspot/share/classfile/placeholders.cpp

@@ -59,10 +59,12 @@
  // For bootclasssearchpath, set before calling load_instance_class.
  // Defining must be single threaded on a class/classloader basis
  // For DEFINE_CLASS, the head of the queue owns the
  // define token and the rest of the threads wait to return the
  // result the first thread gets.
+ // For DETECT_CIRCULARITY, set when loading super class, interfaces, or inline type
+ // fields for class circularity checking.
  class SeenThread: public CHeapObj<mtInternal> {
  private:
     JavaThread* _thread;
     SeenThread* _stnext;
     SeenThread* _stprev;