*** old/src/share/vm/runtime/thread.hpp	Fri Apr 29 15:28:49 2011
--- new/src/share/vm/runtime/thread.hpp	Fri Apr 29 15:28:48 2011

*** 1378,1387 ****
--- 1378,1393 ----
    // Print stack traces in various internal formats
    void trace_stack()                             PRODUCT_RETURN;
    void trace_stack_from(vframe* start_vf)        PRODUCT_RETURN;
    void trace_frames()                            PRODUCT_RETURN;
  
+   // Print an annotated view of the stack frames
+   void print_frame_layout(int depth = 0, bool validate_only = false);
+   void validate_frame_layout() {
+     print_frame_layout(0, true);
+   }
+ 
    // Returns the number of stack frames on the stack
    int depth() const;
  
    // Function for testing deoptimization
    void deoptimize();