src/share/vm/memory/space.hpp

rev 7970 : [mq]: mangle

@@ -126,15 +126,14 @@
   // had allocation performed in it, but is now to be considered empty.
   virtual void clear(bool mangle_space);
 
   // For detecting GC bugs.  Should only be called at GC boundaries, since
   // some unused space may be used as scratch space during GC's.
-  // Default implementation does nothing. We also call this when expanding
-  // a space to satisfy an allocation request. See bug #4668531
-  virtual void mangle_unused_area() {}
-  virtual void mangle_unused_area_complete() {}
-  virtual void mangle_region(MemRegion mr) {}
+  // We also call this when expanding a space to satisfy an allocation
+  // request. See bug #4668531
+  virtual void mangle_unused_area() = 0;
+  virtual void mangle_unused_area_complete() = 0;
 
   // Testers
   bool is_empty() const              { return used() == 0; }
   bool not_empty() const             { return used() > 0; }
 

@@ -557,12 +556,10 @@
   // Mangle regions in the space from the current top up to the
   // previously mangled part of the space.
   void mangle_unused_area() PRODUCT_RETURN;
   // Mangle [top, end)
   void mangle_unused_area_complete() PRODUCT_RETURN;
-  // Mangle the given MemRegion.
-  void mangle_region(MemRegion mr) PRODUCT_RETURN;
 
   // Do some sparse checking on the area that should have been mangled.
   void check_mangled_unused_area(HeapWord* limit) PRODUCT_RETURN;
   // Check the complete area that should have been mangled.
   // This code may be NULL depending on the macro DEBUG_MANGLING.