ceph/src/boost/libs/mpi/include/boost/mpi/detail/content_oarchive.hpp

   1 // (C) Copyright 2005 Matthias Troyer
   2
   3 // Use, modification and distribution is subject to the Boost Software
   4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6
   7 //  Authors: Matthias Troyer
   8
   9 #ifndef BOOST_MPI_DETAIL_CONTENT_OARCHIVE_HPP
  10 #define BOOST_MPI_DETAIL_CONTENT_OARCHIVE_HPP
  11
  12 #include <boost/archive/detail/auto_link_archive.hpp>
  13 #include <boost/archive/basic_archive.hpp>
  14 #include <boost/mpi/detail/ignore_skeleton_oarchive.hpp>
  15 #include <boost/mpi/detail/mpi_datatype_primitive.hpp>
  16 #include <boost/mpi/datatype.hpp>
  17 #include <boost/archive/detail/register_archive.hpp>
  18
  19 namespace boost { namespace mpi {
  20
  21 namespace detail {
  22   // an archive wrapper that stores only the data members but not the
  23   // special types defined by the serialization library
  24   // to define the data skeletons (classes, pointers, container sizes, ...)
  25
  26   class BOOST_MPI_DECL content_oarchive
  27     : public mpi_datatype_primitive,
  28       public ignore_skeleton_oarchive<content_oarchive>
  29   {
  30   public:
  31       content_oarchive()
  32        : committed(false)
  33           {}
  34
  35       content get_content()
  36       {
  37         if (!committed)
  38         {
  39           // create the content holder only once
  40           c=this->get_mpi_datatype();
  41           committed=true;
  42         }
  43         return c;
  44       }
  45
  46   private:
  47     bool committed;
  48     content c;
  49   };
  50 } // end namespace detail
  51
  52 template <class T>
  53 const content get_content(const T& x)
  54 {
  55   detail::content_oarchive ar;
  56   ar << x;
  57   return ar.get_content();
  58 }
  59
  60 } } // end namespace boost::mpi
  61
  62 // required by export
  63 BOOST_SERIALIZATION_REGISTER_ARCHIVE(boost::mpi::detail::content_oarchive)
  64 BOOST_SERIALIZATION_REGISTER_ARCHIVE(boost::mpi::detail::ignore_skeleton_oarchive<boost::mpi::detail::content_oarchive>)
  65 BOOST_SERIALIZATION_USE_ARRAY_OPTIMIZATION(boost::mpi::detail::content_oarchive)
  66 #endif // BOOST_MPI_DETAIL_CONTENT_OARCHIVE_HPP