--- old/src/share/vm/runtime/vmStructs.cpp	2015-01-30 17:15:07.663839146 -0500
+++ new/src/share/vm/runtime/vmStructs.cpp	2015-01-30 17:15:06.755786415 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
 #include "classfile/javaClasses.hpp"
 #include "classfile/loaderConstraints.hpp"
 #include "classfile/placeholders.hpp"
+#include "classfile/compactHashtable.hpp"
 #include "classfile/stringTable.hpp"
 #include "classfile/systemDictionary.hpp"
 #include "ci/ciField.hpp"
@@ -243,6 +244,7 @@
 typedef Hashtable<Klass*, mtClass>            KlassHashtable;
 typedef HashtableEntry<Klass*, mtClass>       KlassHashtableEntry;
 typedef TwoOopHashtable<Symbol*, mtClass>     SymbolTwoOopHashtable;
+typedef CompactHashtable<Symbol*, char>       SymbolCompactHashTable;
 
 //--------------------------------------------------------------------------------
 // VM_STRUCTS
@@ -617,6 +619,7 @@
   /***************/                                                                                                                  \
                                                                                                                                      \
      static_field(SymbolTable,                  _the_table,                                   SymbolTable*)                          \
+     static_field(SymbolTable,                  _shared_table,                                SymbolCompactHashTable)                \
                                                                                                                                      \
   /***************/                                                                                                                  \
   /* StringTable */                                                                                                                  \
@@ -625,6 +628,16 @@
      static_field(StringTable,                  _the_table,                                   StringTable*)                          \
                                                                                                                                      \
   /********************/                                                                                                             \
+  /* CompactHashTable */                                                                                                             \
+  /********************/                                                                                                             \
+                                                                                                                                     \
+  nonstatic_field(SymbolCompactHashTable, _base_address, uintx)	                                                                     \
+  nonstatic_field(SymbolCompactHashTable, _entry_count, juint)	                                                                     \
+  nonstatic_field(SymbolCompactHashTable, _bucket_count, juint)			                                                     \
+  nonstatic_field(SymbolCompactHashTable, _table_end_offset, juint)		                                                     \
+  nonstatic_field(SymbolCompactHashTable, _buckets, juint*)		                                                             \
+                                                                                                                                     \
+  /********************/                                                                                                             \
   /* SystemDictionary */                                                                                                             \
   /********************/                                                                                                             \
                                                                                                                                      \
@@ -1572,6 +1585,8 @@
     declare_type(ResourceArea, Arena)                                     \
   declare_toplevel_type(Chunk)                                            \
                                                                           \
+  declare_toplevel_type(SymbolCompactHashTable)	                          \
+                                                                          \
   /***********************************************************/           \
   /* Thread hierarchy (needed for run-time type information) */           \
   /***********************************************************/           \
@@ -2940,7 +2955,7 @@
 };
 
 VMTypeEntry VMStructs::localHotSpotVMTypes[] = {
-
+  
   VM_TYPES(GENERATE_VM_TYPE_ENTRY,
            GENERATE_TOPLEVEL_VM_TYPE_ENTRY,
            GENERATE_OOP_VM_TYPE_ENTRY,