--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/prims/resolvedMethodTable.hpp	Sat May 27 09:21:01 2017 -0400
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2017, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_PRIMS_RESOLVEDMETHOD_HPP
+#define SHARE_VM_PRIMS_RESOLVEDMETHOD_HPP
+
+#include "oops/symbol.hpp"
+#include "utilities/hashtable.hpp"
+
+// Hashtable to record Method* used in ResolvedMethods, via. ResolvedMethod oops.
+// This is needed for redefinition to replace Method* with redefined versions.
+
+// Entry in a ResolvedMethodTable, mapping a single oop of java_lang_invoke_ResolvedMethodName which
+// holds JVM Method* in vmtarget.
+
+class ResolvedMethodEntry : public HashtableEntry<oop, mtClass> {
+ public:
+  ResolvedMethodEntry* next() const {
+    return (ResolvedMethodEntry*)HashtableEntry<oop, mtClass>::next();
+  }
+
+  ResolvedMethodEntry** next_addr() {
+    return (ResolvedMethodEntry**)HashtableEntry<oop, mtClass>::next_addr();
+  }
+
+  void print_on(outputStream* st) const;
+};
+
+class ResolvedMethodTable : public Hashtable<oop, mtClass> {
+  enum Constants {
+    _table_size  = 1007
+  };
+
+  static int _oops_removed;
+  static int _oops_counted;
+
+  static ResolvedMethodTable* _the_table;
+private:
+  ResolvedMethodEntry* bucket(int i) {
+    return (ResolvedMethodEntry*) Hashtable<oop, mtClass>::bucket(i);
+  }
+
+  ResolvedMethodEntry** bucket_addr(int i) {
+    return (ResolvedMethodEntry**) Hashtable<oop, mtClass>::bucket_addr(i);
+  }
+
+  unsigned int compute_hash(Method* method);
+
+  // need not be locked; no state change
+  oop lookup(int index, unsigned int hash, Method* method);
+  oop lookup(Method* method);
+
+  // must be done under ResolvedMethodTable_lock
+  oop basic_add(Method* method, oop rmethod_name);
+
+public:
+  ResolvedMethodTable();
+
+  static void create_table() {
+    assert(_the_table == NULL, "One symbol table allowed.");
+    _the_table = new ResolvedMethodTable();
+  }
+
+  // Called from java_lang_invoke_ResolvedMethodName
+  static oop find_method(Method* method);
+  static oop add_method(Handle rmethod_name);
+
+#if INCLUDE_JVMTI
+  // It is called at safepoint only for RedefineClasses
+  static void adjust_method_entries(bool * trace_name_printed);
+#endif // INCLUDE_JVMTI
+
+  // Cleanup cleared entries
+  static void unlink(BoolObjectClosure* is_alive);
+  static void oops_do(OopClosure* f);
+
+#ifndef PRODUCT
+  void print();
+#endif
+  void verify();
+};
+
+#endif // SHARE_VM_PRIMS_RESOLVEDMETHOD_HPP