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diff --git a/boost/interprocess/indexes/map_index.hpp b/boost/interprocess/indexes/map_index.hpp
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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_MAP_INDEX_HPP
+#define BOOST_INTERPROCESS_MAP_INDEX_HPP
+
+#include <boost/interprocess/detail/config_begin.hpp>
+#include <boost/interprocess/detail/workaround.hpp>
+
+#include <functional>
+#include <utility>
+#include <boost/interprocess/containers/map.hpp>
+#include <boost/interprocess/allocators/private_adaptive_pool.hpp>
+
+//!\file
+//!Describes index adaptor of boost::map container, to use it
+//!as name/shared memory index
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail{
+
+//!Helper class to define typedefs from IndexTraits
+template <class MapConfig>
+struct map_index_aux
+{
+   typedef typename MapConfig::key_type            key_type;
+   typedef typename MapConfig::mapped_type         mapped_type;
+   typedef std::less<key_type>                     key_less;
+   typedef std::pair<const key_type, mapped_type>  value_type;
+
+   typedef private_adaptive_pool
+            <value_type,
+               typename MapConfig::
+         segment_manager_base>                     allocator_type;
+
+   typedef boost::interprocess::map
+      <key_type,  mapped_type,
+       key_less, allocator_type>                   index_t;
+};
+
+}  //namespace ipcdetail {
+
+//!Index type based in boost::interprocess::map. Just derives from boost::interprocess::map 
+//!and defines the interface needed by managed memory segments
+template <class MapConfig>
+class map_index
+   //Derive class from map specialization
+   : public ipcdetail::map_index_aux<MapConfig>::index_t
+{
+   /// @cond
+   typedef ipcdetail::map_index_aux<MapConfig>  index_aux;
+   typedef typename index_aux::index_t       base_type;
+   typedef typename MapConfig::
+      segment_manager_base          segment_manager_base;
+   /// @endcond
+
+   public:
+   //!Constructor. Takes a pointer to the
+   //!segment manager. Can throw
+   map_index(segment_manager_base *segment_mngr)
+      : base_type(typename index_aux::key_less(),
+                  segment_mngr){}
+
+   //!This reserves memory to optimize the insertion of n
+   //!elements in the index
+   void reserve(typename segment_manager_base::size_type)
+      {  /*Does nothing, map has not reserve or rehash*/  }
+
+   //!This tries to free previously allocate
+   //!unused memory.
+   void shrink_to_fit()
+   {  base_type::get_stored_allocator().deallocate_free_blocks(); }
+};
+
+/// @cond
+
+//!Trait class to detect if an index is a node
+//!index. This allows more efficient operations
+//!when deallocating named objects.
+template<class MapConfig>
+struct is_node_index
+   <boost::interprocess::map_index<MapConfig> >
+{
+   static const bool value = true;
+};
+/// @endcond
+
+}}   //namespace boost { namespace interprocess {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //#ifndef BOOST_INTERPROCESS_MAP_INDEX_HPP