iterator.hpp

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#ifndef HAVOQGT_MPI_DETAIL_ITERATOR_HPP_INCLUDED
#define HAVOQGT_MPI_DETAIL_ITERATOR_HPP_INCLUDED

#include <havoqgt/mpi.hpp>

namespace havoqgt { namespace mpi { namespace detail {

template <typename Iterator>
bool global_iterator_range_empty(Iterator itr, Iterator itr_end, MPI_Comm comm) {
  uint32_t my_unfinished = itr != itr_end;
  uint32_t ranks_unfinished = mpi_all_reduce(my_unfinished, 
                                             std::plus<uint32_t>(), 
                                             comm);
  return ranks_unfinished == 0;
}

}}}

#endif //HAVOQGT_MPI_DETAIL_ITERATOR_HPP_INCLUDED