| // Copyright (C) 2006 The Trustees of Indiana University. |
| |
| // Use, modification and distribution is subject to 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) |
| |
| // Authors: Douglas Gregor |
| // Andrew Lumsdaine |
| |
| // This file contains the "unsafe_serialize" routine, which transforms |
| // types they may not be serializable (such as void*) into |
| // serializable equivalents. |
| #ifndef PBGL_UNSAFE_SERIALIZE_HPP |
| #define PBGL_UNSAFE_SERIALIZE_HPP |
| |
| #ifndef BOOST_GRAPH_USE_MPI |
| #error "Parallel BGL files should not be included unless <boost/graph/use_mpi.hpp> has been included" |
| #endif |
| |
| #include <boost/mpi/datatype.hpp> |
| #include <boost/serialization/is_bitwise_serializable.hpp> |
| #include <boost/mpl/bool.hpp> |
| #include <boost/mpl/if.hpp> |
| #include <boost/cstdint.hpp> |
| #include <boost/static_assert.hpp> |
| #include <boost/type_traits.hpp> |
| #include <utility> |
| |
| BOOST_IS_BITWISE_SERIALIZABLE(void*) |
| namespace boost { namespace mpi { |
| template<> struct is_mpi_datatype<void*> : mpl::true_ { }; |
| } } // end namespace boost::mpi |
| |
| namespace boost { |
| typedef mpl::if_c<(sizeof(int) == sizeof(void*)), |
| int, |
| mpl::if_c<(sizeof(long) == sizeof(void*)), |
| long, |
| mpl::if_c<(sizeof(void*) <= sizeof(boost::intmax_t)), |
| boost::intmax_t, |
| void>::type |
| >::type |
| >::type ptr_serialize_type; |
| |
| BOOST_STATIC_ASSERT ((!boost::is_void<ptr_serialize_type>::value)); |
| |
| template<typename T> inline T& unsafe_serialize(T& x) { return x; } |
| |
| inline ptr_serialize_type& unsafe_serialize(void*& x) |
| { return reinterpret_cast<ptr_serialize_type&>(x); } |
| |
| // Force Boost.MPI to serialize a void* like a ptr_serialize_type |
| namespace mpi { |
| template<> inline MPI_Datatype get_mpi_datatype<void*>(void* const& x) |
| { |
| return get_mpi_datatype<ptr_serialize_type>(); |
| } |
| } |
| |
| template<typename T, typename U> |
| struct unsafe_pair |
| { |
| unsafe_pair() { } |
| unsafe_pair(const T& t, const U& u) : first(t), second(u) { } |
| unsafe_pair(const std::pair<T, U>& p) : first(p.first), second(p.second) { } |
| T first; |
| U second; |
| |
| template<typename Archiver> |
| void serialize(Archiver& ar, const unsigned /*version*/) |
| { |
| ar & unsafe_serialize(first) & unsafe_serialize(second); |
| } |
| }; |
| |
| template<typename T, typename U> |
| bool operator<(unsafe_pair<T,U> const& x, unsafe_pair<T,U> const& y) |
| { |
| return std::make_pair(x.first, x.second) < |
| std::make_pair(y.first, y.second); |
| } |
| |
| } // end namespace boost |
| |
| #endif // PBGL_UNSAFE_SERIALIZE_HPP |