*** old/src/hotspot/share/utilities/hashtable.hpp	Wed Nov  1 11:21:48 2017
--- new/src/hotspot/share/utilities/hashtable.hpp	Wed Nov  1 11:21:48 2017

*** 235,244 ****
--- 235,246 ----
  
    void free_entry(BasicHashtableEntry<F>* entry);
  
    int number_of_entries() const { return _number_of_entries; }
  
+   bool resize(int new_size);
+ 
    template <class T> void verify_table(const char* table_name) PRODUCT_RETURN;
  };
  
  
  template <class T, MEMFLAGS F> class Hashtable : public BasicHashtable<F> {

*** 279,289 ****
--- 281,290 ----
  
    // The following method is not MT-safe and must be done under lock.
    HashtableEntry<T, F>** bucket_addr(int i) {
      return (HashtableEntry<T, F>**)BasicHashtable<F>::bucket_addr(i);
    }
  
  };
  
  template <class T, MEMFLAGS F> class RehashableHashtable : public Hashtable<T, F> {
   friend class VMStructs;
   protected: