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openmpi/src/mpi/c/graph_neighbors.c
Jeff Squyres e9ed717748 First cut at copyrights: IU, UTK, and some OSU. LANL and HLRS still
pending.

This commit was SVN r3655.
2004-11-22 01:38:40 +00:00

75 строки
2.3 KiB
C

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include "mpi.h"
#include "mpi/c/bindings.h"
#include "communicator/communicator.h"
#include "errhandler/errhandler.h"
#include "mca/topo/topo.h"
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Graph_neighbors = PMPI_Graph_neighbors
#endif
#if OMPI_PROFILING_DEFINES
#include "mpi/c/profile/defines.h"
#endif
static const char FUNC_NAME[] = "MPI_Graph_neighbors";
int MPI_Graph_neighbors(MPI_Comm comm, int rank, int maxneighbors,
int *neighbors)
{
int err;
mca_topo_base_module_graph_neighbors_fn_t func;
/* check the arguments */
if (MPI_PARAM_CHECK) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (MPI_COMM_NULL == comm) {
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_COMM,
FUNC_NAME);
}
if (OMPI_COMM_IS_INTER(comm)) {
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_COMM,
FUNC_NAME);
}
if (!OMPI_COMM_IS_GRAPH(comm)) {
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_TOPOLOGY,
FUNC_NAME);
}
if ((0 > maxneighbors) || ((0 < maxneighbors) && NULL == neighbors)) {
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_ARG,
FUNC_NAME);
}
if ((0 > rank) || (rank > ompi_group_size(comm->c_local_group))) {
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_RANK,
FUNC_NAME);
}
}
/* neighbors the function pointer to do the right thing */
func = comm->c_topo->topo_graph_neighbors;
/* call the function */
if ( MPI_SUCCESS !=
(err = func(comm, rank, maxneighbors, neighbors))) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, err, FUNC_NAME);
}
/* All done */
return MPI_SUCCESS;
}