src/share/vm/gc/parallel/mutableSpace.hpp

rev 11970 : [mq]: base_volatiles

@@ -49,11 +49,11 @@
   MutableSpaceMangler* _mangler;
   // The last region which page had been setup to be interleaved.
   MemRegion _last_setup_region;
   size_t _alignment;
  protected:
-  HeapWord* _top;
+  HeapWord* volatile _top;
 
   MutableSpaceMangler* mangler() { return _mangler; }
 
   void numa_setup_pages(MemRegion mr, bool clear_space);
   void pretouch_pages(MemRegion mr);

@@ -67,11 +67,11 @@
 
   // Accessors
   HeapWord* top() const                    { return _top;    }
   virtual void set_top(HeapWord* value)    { _top = value;   }
 
-  HeapWord** top_addr()                    { return &_top; }
+  HeapWord* volatile* top_addr()                    { return &_top; }
   HeapWord** end_addr()                    { return &_end; }
 
   virtual void set_bottom(HeapWord* value) { _bottom = value; }
   virtual void set_end(HeapWord* value)    { _end = value; }