Chris@16: //////////////////////////////////////////////////////////////////////////////
Chris@16: //
Chris@16: // (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
Chris@16: // Software License, Version 1.0. (See accompanying file
Chris@16: // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/interprocess for documentation.
Chris@16: //
Chris@16: //////////////////////////////////////////////////////////////////////////////
Chris@16: 
Chris@16: #ifndef BOOST_INTERPROCESS_MAP_INDEX_HPP
Chris@16: #define BOOST_INTERPROCESS_MAP_INDEX_HPP
Chris@16: 
Chris@101: #ifndef BOOST_CONFIG_HPP
Chris@101: #  include <boost/config.hpp>
Chris@101: #endif
Chris@101: #
Chris@101: #if defined(BOOST_HAS_PRAGMA_ONCE)
Chris@101: #  pragma once
Chris@101: #endif
Chris@101: 
Chris@16: #include <boost/interprocess/detail/config_begin.hpp>
Chris@16: #include <boost/interprocess/detail/workaround.hpp>
Chris@16: 
Chris@101: #include <boost/intrusive/detail/minimal_pair_header.hpp>
Chris@16: #include <boost/interprocess/containers/map.hpp>
Chris@16: #include <boost/interprocess/allocators/private_adaptive_pool.hpp>
Chris@101: #include <boost/intrusive/detail/minimal_pair_header.hpp>         //std::pair
Chris@101: #include <boost/intrusive/detail/minimal_less_equal_header.hpp>   //std::less
Chris@16: 
Chris@16: //!\file
Chris@16: //!Describes index adaptor of boost::map container, to use it
Chris@16: //!as name/shared memory index
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace interprocess {
Chris@16: namespace ipcdetail{
Chris@16: 
Chris@16: //!Helper class to define typedefs from IndexTraits
Chris@16: template <class MapConfig>
Chris@16: struct map_index_aux
Chris@16: {
Chris@16:    typedef typename MapConfig::key_type            key_type;
Chris@16:    typedef typename MapConfig::mapped_type         mapped_type;
Chris@16:    typedef std::less<key_type>                     key_less;
Chris@16:    typedef std::pair<const key_type, mapped_type>  value_type;
Chris@16: 
Chris@16:    typedef private_adaptive_pool
Chris@16:             <value_type,
Chris@16:                typename MapConfig::
Chris@16:          segment_manager_base>                     allocator_type;
Chris@16: 
Chris@16:    typedef boost::interprocess::map
Chris@16:       <key_type,  mapped_type,
Chris@16:        key_less, allocator_type>                   index_t;
Chris@16: };
Chris@16: 
Chris@16: }  //namespace ipcdetail {
Chris@16: 
Chris@16: //!Index type based in boost::interprocess::map. Just derives from boost::interprocess::map
Chris@16: //!and defines the interface needed by managed memory segments
Chris@16: template <class MapConfig>
Chris@16: class map_index
Chris@16:    //Derive class from map specialization
Chris@16:    : public ipcdetail::map_index_aux<MapConfig>::index_t
Chris@16: {
Chris@101:    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
Chris@16:    typedef ipcdetail::map_index_aux<MapConfig>  index_aux;
Chris@16:    typedef typename index_aux::index_t       base_type;
Chris@16:    typedef typename MapConfig::
Chris@16:       segment_manager_base          segment_manager_base;
Chris@101:    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
Chris@16: 
Chris@16:    public:
Chris@16:    //!Constructor. Takes a pointer to the
Chris@16:    //!segment manager. Can throw
Chris@16:    map_index(segment_manager_base *segment_mngr)
Chris@16:       : base_type(typename index_aux::key_less(),
Chris@16:                   segment_mngr){}
Chris@16: 
Chris@16:    //!This reserves memory to optimize the insertion of n
Chris@16:    //!elements in the index
Chris@16:    void reserve(typename segment_manager_base::size_type)
Chris@16:       {  /*Does nothing, map has not reserve or rehash*/  }
Chris@16: 
Chris@16:    //!This tries to free previously allocate
Chris@16:    //!unused memory.
Chris@16:    void shrink_to_fit()
Chris@16:    {  base_type::get_stored_allocator().deallocate_free_blocks(); }
Chris@16: };
Chris@16: 
Chris@101: #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
Chris@16: 
Chris@16: //!Trait class to detect if an index is a node
Chris@16: //!index. This allows more efficient operations
Chris@16: //!when deallocating named objects.
Chris@16: template<class MapConfig>
Chris@16: struct is_node_index
Chris@16:    <boost::interprocess::map_index<MapConfig> >
Chris@16: {
Chris@16:    static const bool value = true;
Chris@16: };
Chris@101: #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
Chris@16: 
Chris@16: }}   //namespace boost { namespace interprocess {
Chris@16: 
Chris@16: #include <boost/interprocess/detail/config_end.hpp>
Chris@16: 
Chris@16: #endif   //#ifndef BOOST_INTERPROCESS_MAP_INDEX_HPP