--- old/src/share/vm/utilities/hashtable.hpp	2019-09-02 18:09:54.037864400 +0300
+++ new/src/share/vm/utilities/hashtable.hpp	2019-09-02 18:09:53.148727300 +0300
@@ -30,6 +30,7 @@
 #include "oops/oop.hpp"
 #include "oops/symbol.hpp"
 #include "runtime/handles.hpp"
+#include "utilities/tableStatistics.hpp"
 
 // This is a generic hashtable, designed to be used for the symbol
 // and string tables.
@@ -178,6 +179,8 @@
   void verify_lookup_length(double load);
 #endif
 
+  TableRateStatistics _stats_rate;
+
   void initialize(int table_size, int entry_size, int number_of_entries);
 
   // Accessor
@@ -267,6 +270,8 @@
   // addresses, and appear first in the list.
   void reverse(void* boundary = NULL);
 
+  TableStatistics statistics_calculate(T (*literal_load_barrier)(HashtableEntry<T, F>*) = NULL);
+
 protected:
 
   unsigned int compute_hash(Symbol* name) {
@@ -317,16 +322,6 @@
   static bool use_alternate_hashcode()  { return _seed != 0; }
   static juint seed()                    { return _seed; }
 
-  static int literal_size(Symbol *symbol);
-  static int literal_size(oop oop);
-
-  // The following two are currently not used, but are needed anyway because some
-  // C++ compilers (MacOS and Solaris) force the instantiation of
-  // Hashtable<ConstantPool*, mtClass>::dump_table() even though we never call this function
-  // in the VM code.
-  static int literal_size(ConstantPool *cp) {Unimplemented(); return 0;}
-  static int literal_size(Klass *k)         {Unimplemented(); return 0;}
-
   void dump_table(outputStream* st, const char *table_name);
 
  private: