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Support building communicators from groups and comparing communicators

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[SVN r37832]
This commit is contained in:
Douglas Gregor
2007-05-31 16:02:07 +00:00
parent 0d6a13bfc4
commit 327abef38e
3 changed files with 71 additions and 3 deletions
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19
src/communicator.cpp
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@@ -4,6 +4,7 @@
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <boost/mpi/communicator.hpp>
#include <boost/mpi/group.hpp>
#include <boost/mpi/skeleton_and_content.hpp>
#include <boost/mpi/detail/point_to_point.hpp>
@@ -52,7 +53,15 @@ communicator::communicator(const MPI_Comm& comm, comm_create_kind kind)
comm_ptr.reset(new MPI_Comm(comm));
break;
}
}
}
communicator::communicator(const communicator& comm, const group& subgroup)
{
MPI_Comm newcomm;
BOOST_MPI_CHECK_RESULT(MPI_Comm_create,
((MPI_Comm)comm, (MPI_Group)subgroup, &newcomm));
comm_ptr.reset(new MPI_Comm(newcomm), comm_free());
}
int communicator::size() const
{
@@ -264,4 +273,12 @@ request communicator::irecv(int source, int tag) const
return req;
}
bool operator==(const communicator& comm1, const communicator& comm2)
{
int result;
BOOST_MPI_CHECK_RESULT(MPI_Comm_compare,
((MPI_Comm)comm1, (MPI_Comm)comm2, &result));
return result == MPI_IDENT;
}
} } // end namespace boost::mpi