--- old/src/share/vm/memory/barrierSet.hpp	Tue Mar 27 21:04:01 2012
+++ new/src/share/vm/memory/barrierSet.hpp	Tue Mar 27 21:04:01 2012
@@ -181,6 +181,8 @@
   // within the heap, this function tells whether they are met.
   virtual bool is_aligned(HeapWord* addr) = 0;
 
+  // Print a description of the memory for the barrier set
+  virtual void print_on(outputStream* st) const = 0;
 };
 
 #endif // SHARE_VM_MEMORY_BARRIERSET_HPP