--- old/src/share/vm/runtime/thread.hpp	2014-11-14 16:56:35.615861865 +0300
+++ new/src/share/vm/runtime/thread.hpp	2014-11-14 16:56:35.403861869 +0300
@@ -752,6 +752,7 @@
 
 class JavaThread: public Thread {
   friend class VMStructs;
+  friend class WhiteBox;
  private:
   JavaThread*    _next;                          // The next thread in the Threads list
   oop            _threadObj;                     // The Java level thread object