ceph/src/boost/boost/mpi/detail/antiques.hpp

   1 //          Copyright Alain Miniussi 2014.
   2 // Distributed under the Boost Software License, Version 1.0.
   3 //    (See accompanying file LICENSE_1_0.txt or copy at
   4 //          http://www.boost.org/LICENSE_1_0.txt)
   5
   6 // Authors: Alain Miniussi
   7
   8 #ifndef BOOST_MPI_ANTIQUES_HPP
   9 #define BOOST_MPI_ANTIQUES_HPP
  10
  11 #include <vector>
  12
  13 // Support for some obsolette compilers
  14
  15 namespace boost { namespace mpi {
  16 namespace detail {
  17   // Some old gnu compiler have no support for vector<>::data
  18   // Use this in the mean time, the cumbersome syntax should
  19   // serve as an incentive to get rid of this when those compilers
  20   // are dropped.
  21   template <typename T, typename A>
  22   T* c_data(std::vector<T,A>& v) { return v.empty() ? static_cast<T*>(0) : &(v[0]); }
  23
  24   template <typename T, typename A>
  25   T const* c_data(std::vector<T,A> const& v) { return v.empty() ? static_cast<T const*>(0) : &(v[0]); }
  26
  27   // Some old MPI implementation (OpenMPI 1.6 for example) have non
  28   // conforming API w.r.t. constness.
  29   // We choose to fix this trhough this converter in order to
  30   // explain/remember why we're doing this and remove it easilly
  31   // when support for those MPI is dropped.
  32   // The fix is as specific (un templatized, for one) as possible
  33   // in order to encourage it usage for the probleme at hand.
  34   // Problematic API include MPI_Send
  35   inline
  36   void *unconst(void const* addr) { return const_cast<void*>(addr); }
  37
  38 } } }
  39
  40 #endif