// Copyright (C) 2007 Douglas Gregor and Matthias Troyer
|
//
|
// Use, modification and distribution is subject to the Boost Software
|
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
//
|
// This file contains helper data structures for use in transmitting
|
// properties. The basic idea is to optimize away any storage for the
|
// properties when no properties are specified.
|
#ifndef BOOST_PARALLEL_DETAIL_PROPERTY_HOLDERS_HPP
|
#define BOOST_PARALLEL_DETAIL_PROPERTY_HOLDERS_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/property_map/property_map.hpp>
|
#include <boost/serialization/base_object.hpp>
|
#include <boost/mpl/and.hpp>
|
#include <boost/graph/parallel/detail/untracked_pair.hpp>
|
|
namespace boost { namespace detail { namespace parallel {
|
|
/**
|
* This structure contains an instance of @c Property, unless @c
|
* Property is a placeholder for "no property". Always access the
|
* property through @c get_property. Typically used as a base class.
|
*/
|
template<typename Property>
|
struct maybe_store_property
|
{
|
maybe_store_property() {}
|
maybe_store_property(const Property& p) : p(p) {}
|
|
Property& get_property() { return p; }
|
const Property& get_property() const { return p; }
|
|
private:
|
Property p;
|
|
friend class boost::serialization::access;
|
|
template<typename Archiver>
|
void serialize(Archiver& ar, const unsigned int /*version*/)
|
{
|
ar & p;
|
}
|
};
|
|
template<>
|
struct maybe_store_property<no_property>
|
{
|
maybe_store_property() {}
|
maybe_store_property(no_property) {}
|
|
no_property get_property() const { return no_property(); }
|
|
private:
|
friend class boost::serialization::access;
|
|
template<typename Archiver>
|
void serialize(Archiver&, const unsigned int /*version*/) { }
|
};
|
|
/**
|
* This structure is a simple pair that also contains a property.
|
*/
|
template<typename T, typename U, typename Property>
|
class pair_with_property
|
: public boost::parallel::detail::untracked_pair<T, U>
|
, public maybe_store_property<Property>
|
{
|
public:
|
typedef boost::parallel::detail::untracked_pair<T, U> pair_base;
|
typedef maybe_store_property<Property> property_base;
|
|
pair_with_property() { }
|
|
pair_with_property(const T& t, const U& u, const Property& property)
|
: pair_base(t, u), property_base(property) { }
|
|
private:
|
friend class boost::serialization::access;
|
|
template<typename Archiver>
|
void serialize(Archiver& ar, const unsigned int /*version*/)
|
{
|
ar & boost::serialization::base_object<pair_base>(*this)
|
& boost::serialization::base_object<property_base>(*this);
|
}
|
};
|
|
template<typename T, typename U, typename Property>
|
inline pair_with_property<T, U, Property>
|
make_pair_with_property(const T& t, const U& u, const Property& property)
|
{
|
return pair_with_property<T, U, Property>(t, u, property);
|
}
|
|
} } } // end namespace boost::parallel::detail
|
|
namespace boost { namespace mpi {
|
|
template<>
|
struct is_mpi_datatype<boost::detail::parallel::maybe_store_property<no_property> > : mpl::true_ { };
|
|
template<typename Property>
|
struct is_mpi_datatype<boost::detail::parallel::maybe_store_property<Property> >
|
: is_mpi_datatype<Property> { };
|
|
template<typename T, typename U, typename Property>
|
struct is_mpi_datatype<boost::detail::parallel::pair_with_property<T, U, Property> >
|
: boost::mpl::and_<is_mpi_datatype<boost::parallel::detail::untracked_pair<T, U> >,
|
is_mpi_datatype<Property> > { };
|
|
} } // end namespace boost::mpi
|
|
BOOST_IS_BITWISE_SERIALIZABLE(boost::detail::parallel::maybe_store_property<no_property>)
|
|
namespace boost { namespace serialization {
|
|
template<typename Property>
|
struct is_bitwise_serializable<boost::detail::parallel::maybe_store_property<Property> >
|
: is_bitwise_serializable<Property> { };
|
|
template<typename Property>
|
struct implementation_level<boost::detail::parallel::maybe_store_property<Property> >
|
: mpl::int_<object_serializable> {} ;
|
|
template<typename Property>
|
struct tracking_level<boost::detail::parallel::maybe_store_property<Property> >
|
: mpl::int_<track_never> {} ;
|
|
template<typename T, typename U, typename Property>
|
struct is_bitwise_serializable<
|
boost::detail::parallel::pair_with_property<T, U, Property> >
|
: boost::mpl::and_<is_bitwise_serializable<boost::parallel::detail::untracked_pair<T, U> >,
|
is_bitwise_serializable<Property> > { };
|
|
template<typename T, typename U, typename Property>
|
struct implementation_level<
|
boost::detail::parallel::pair_with_property<T, U, Property> >
|
: mpl::int_<object_serializable> {} ;
|
|
template<typename T, typename U, typename Property>
|
struct tracking_level<
|
boost::detail::parallel::pair_with_property<T, U, Property> >
|
: mpl::int_<track_never> {} ;
|
|
} } // end namespace boost::serialization
|
|
#endif // BOOST_PARALLEL_DETAIL_PROPERTY_HOLDERS_HPP
|
