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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2005-2011. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/interprocess for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+#ifndef BOOST_INTERPROCESS_FLAT_MAP_INDEX_HPP
+#define BOOST_INTERPROCESS_FLAT_MAP_INDEX_HPP
+
+#include <boost/interprocess/detail/config_begin.hpp>
+#include <boost/interprocess/detail/workaround.hpp>
+
+#include <functional>
+#include <utility>
+#include <boost/interprocess/containers/flat_map.hpp>
+#include <boost/interprocess/allocators/allocator.hpp>
+
+//!\file
+//!Describes index adaptor of boost::map container, to use it
+//!as name/shared memory index
+
+//[flat_map_index
+namespace boost { namespace interprocess {
+
+//!Helper class to define typedefs from IndexTraits
+template <class MapConfig>
+struct flat_map_index_aux
+{
+   typedef typename MapConfig::key_type            key_type;
+   typedef typename MapConfig::mapped_type         mapped_type;
+   typedef typename MapConfig::
+      segment_manager_base                   segment_manager_base;
+   typedef std::less<key_type>                     key_less;
+   typedef std::pair<key_type, mapped_type>        value_type;
+   typedef allocator<value_type
+                    ,segment_manager_base>   allocator_type;
+   typedef flat_map<key_type,  mapped_type,
+                    key_less, allocator_type>      index_t;
+};
+
+//!Index type based in flat_map. Just derives from flat_map and
+//!defines the interface needed by managed memory segments.
+template <class MapConfig>
+class flat_map_index
+   //Derive class from flat_map specialization
+   : public flat_map_index_aux<MapConfig>::index_t
+{
+   /// @cond
+   typedef flat_map_index_aux<MapConfig>  index_aux;
+   typedef typename index_aux::index_t    base_type;
+   typedef typename index_aux::
+      segment_manager_base          segment_manager_base;
+   /// @endcond
+
+   public:
+   //!Constructor. Takes a pointer to the segment manager. Can throw
+   flat_map_index(segment_manager_base *segment_mngr)
+      : base_type(typename index_aux::key_less(),
+                  typename index_aux::allocator_type(segment_mngr))
+   {}
+
+   //!This reserves memory to optimize the insertion of n elements in the index
+   void reserve(typename segment_manager_base::size_type n)
+   {  base_type::reserve(n);  }
+
+   //!This frees all unnecessary memory
+   void shrink_to_fit()
+   {  base_type::shrink_to_fit();   }
+};
+
+}}   //namespace boost { namespace interprocess
+//]
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //#ifndef BOOST_INTERPROCESS_FLAT_MAP_INDEX_HPP