ceph/src/boost/libs/graph_parallel/include/boost/graph/parallel/container_traits.hpp

   1 // Copyright (C) 2004-2006 The Trustees of Indiana University.
   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: Douglas Gregor
   8 //           Andrew Lumsdaine
   9
  10 //
  11 // This file contains traits that describe
  12 //
  13 #ifndef BOOST_GRAPH_PARALLEL_CONTAINER_TRAITS_HPP
  14 #define BOOST_GRAPH_PARALLEL_CONTAINER_TRAITS_HPP
  15
  16 #ifndef BOOST_GRAPH_USE_MPI
  17 #error "Parallel BGL files should not be included unless <boost/graph/use_mpi.hpp> has been included"
  18 #endif
  19
  20 namespace boost { namespace graph { namespace parallel {
  21
  22 template<typename T>
  23 struct process_group_type
  24 {
  25   typedef typename T::process_group_type type;
  26 };
  27
  28 template<typename T>
  29 inline typename process_group_type<T>::type
  30 process_group(const T& x)
  31 { return x.process_group(); }
  32
  33 // Helper function that algorithms should use to get the process group
  34 // out of a container.
  35 template<typename Container>
  36 inline typename process_group_type<Container>::type
  37 process_group_adl(const Container& container)
  38 {
  39   return process_group(container);
  40 }
  41
  42
  43 } } } // end namespace boost::graph::parallel
  44
  45 #endif // BOOST_GRAPH_PARALLEL_CONTAINER_TRAITS_HPP