src/share/vm/gc_implementation/shenandoah/shenandoahHeapRegionSet.hpp

rev 9485 : [backport] Replace ShHeapRegionSet::get with get_fast
rev 9538 : [backport] Ensure collection set and cset map are consistent

@@ -51,30 +51,30 @@
 class ShenandoahHeapRegionSet: public CHeapObj<mtGC> {
 protected:
   ShenandoahHeapRegion** _regions;
   size_t _active_end;
   size_t _reserved_end;
-  size_t _current_index;
+  volatile size_t        _current_index;
 
 public:
 
   ShenandoahHeapRegionSet(size_t max_regions);
 
   virtual ~ShenandoahHeapRegionSet();
 
-  size_t   max_regions()     { return _reserved_end;}
-  size_t   active_regions()  { return _active_end;}
+  size_t   max_regions()     const { return _reserved_end;}
+  size_t   active_regions()  const { return _active_end;}
 
   HeapWord* bottom() const;
   HeapWord* end() const;
 
   void clear();
 
   size_t count() const;
 
-  ShenandoahHeapRegion* get(size_t i) const;
-  inline ShenandoahHeapRegion* get_fast(size_t i) const {
+  ShenandoahHeapRegion* get_or_null(size_t i) const;
+  inline ShenandoahHeapRegion* get(size_t i) const {
     assert (i < _active_end, "sanity");
     return _regions[i];
   }
 
   virtual void add_region(ShenandoahHeapRegion* r);