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diff --git a/trunk/ACE/apps/gperf/src/Hash_Table.h b/trunk/ACE/apps/gperf/src/Hash_Table.h
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+++ b/trunk/ACE/apps/gperf/src/Hash_Table.h
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+// -*- C++ -*-
+
+// $Id$
+
+// Copyright (C) 1989 Free Software Foundation, Inc.
+// written by Douglas C. Schmidt (schmidt@cs.wustl.edu)
+
+// This file is part of GNU GPERF.
+
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+
+// This program 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 for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+#ifndef HASH_TABLE_H
+#define HASH_TABLE_H
+
+#include "ace/config-all.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "Options.h"
+#include "List_Node.h"
+
+#if defined (ACE_HAS_GPERF)
+// @@ This class should be replaced by something in ACE, e.g.,
+// ACE_Hash_Map_Manager.  Perhaps we should implement a new
+// ACE_Hash_Map that uses double hashing, however!
+class Hash_Table
+{
+  // = TITLE
+  //   Hash table used to check for duplicate keyword entries.
+  //
+  // = DESCRIPTION
+  //   This implementation uses "double hashing."
+public:
+  Hash_Table (size_t s);
+
+  ~Hash_Table (void);
+
+  List_Node *find (List_Node *item, int ignore_length);
+
+private:
+  List_Node **table_;
+  // Vector of pointers to linked lists of List_Node's.
+
+  size_t size_;
+  // Size of the vector.
+
+  int collisions_;
+  // Find out how well our double hashing is working!
+};
+
+#endif /* ACE_HAS_GPERF */
+#endif /* HASH_TABLE_H */