// Copyright (C) 2004-2006 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
|
#ifndef BOOST_GRAPH_PARALLEL_DIJKSTRA_DETAIL_HPP
|
#define BOOST_GRAPH_PARALLEL_DIJKSTRA_DETAIL_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/property_map/property_map.hpp>
|
|
namespace boost { namespace graph { namespace distributed { namespace detail {
|
|
/**********************************************************************
|
* Dijkstra queue message data *
|
**********************************************************************/
|
template<typename DistanceMap, typename PredecessorMap>
|
class dijkstra_msg_value
|
{
|
typedef typename property_traits<DistanceMap>::value_type distance_type;
|
typedef typename property_traits<PredecessorMap>::value_type
|
predecessor_type;
|
|
public:
|
typedef std::pair<distance_type, predecessor_type> type;
|
|
static type create(distance_type dist, predecessor_type pred)
|
{ return std::make_pair(dist, pred); }
|
};
|
|
template<typename DistanceMap>
|
class dijkstra_msg_value<DistanceMap, dummy_property_map>
|
{
|
typedef typename property_traits<DistanceMap>::key_type vertex_descriptor;
|
public:
|
typedef typename property_traits<DistanceMap>::value_type type;
|
|
static type create(type dist, vertex_descriptor) { return dist; }
|
};
|
/**********************************************************************/
|
|
} } } } // end namespace boost::graph::distributed::detail
|
|
#endif // BOOST_GRAPH_PARALLEL_DIJKSTRA_DETAIL_HPP
|
