src/hotspot/share/libadt/vectset.hpp

@@ -33,20 +33,21 @@
  // These sets can grow or shrink, based on the initial size and the largest
  // element currently in them.
  
  //------------------------------VectorSet--------------------------------------
  class VectorSet : public AnyObj {
+   friend VectorSet intersect(const VectorSet&, const VectorSet&);
+ 
  private:
  
    static const uint word_bits = 5;
    static const uint bit_mask  = 31;
  
    // Used 32-bit words
    uint       _size;
-   uint32_t*  _data;
    // Allocated words
-   uint       _data_size;
+   uint32_t*  _data;
    Arena*     _set_arena;
  
    void init(Arena* arena);
    // Grow vector to required word capacity
    void grow(uint new_word_capacity);

@@ -113,8 +114,13 @@
        grow(word);
      }
      uint32_t mask = 1U << (elem & bit_mask);
      _data[word] |= mask;
    }
+ 
+ #ifndef PRODUCT
+   void print_on(outputStream* st) const override;
+ #endif // PRODUCT
  };
  
+ VectorSet intersect(const VectorSet& lhs, const VectorSet& rhs);
  #endif // SHARE_LIBADT_VECTSET_HPP