78 строки
2.5 KiB
C
78 строки
2.5 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include <stdio.h>
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#include "mpi/c/bindings.h"
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#include "ompi/mca/topo/topo.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Cart_shift = PMPI_Cart_shift
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Cart_shift";
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int MPI_Cart_shift(MPI_Comm comm, int direction, int disp,
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int *rank_source, int *rank_dest)
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{
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int err;
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mca_topo_base_module_cart_shift_fn_t func;
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/* check the arguments */
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (MPI_COMM_NULL == comm) {
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return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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}
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if (OMPI_COMM_IS_INTER(comm)) {
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return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_COMM,
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FUNC_NAME);
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}
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if (!OMPI_COMM_IS_CART(comm)) {
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return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_TOPOLOGY,
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FUNC_NAME);
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}
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if (0 > direction) { /* yet to detect direction >= comm->c_topo_ndims */
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return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_DIMS,
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FUNC_NAME);
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}
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if (NULL == rank_source || NULL == rank_dest) {
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return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_ARG,
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FUNC_NAME);
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}
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}
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/* get the function pointer on this communicator */
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func = comm->c_topo->topo_cart_shift;
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/* call the function */
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if ( MPI_SUCCESS !=
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(err = func(comm, direction, disp, rank_source, rank_dest))) {
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return OMPI_ERRHANDLER_INVOKE(comm, err, FUNC_NAME);
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}
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/* all done */
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return MPI_SUCCESS;
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}
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