ompi/mpi/c/graph_neighbors.c

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This source file includes following definitions.
MPI_Graph_neighbors
   1 /*
   2  * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
   3  *                         University Research and Technology
   4  *                         Corporation.  All rights reserved.
   5  * Copyright (c) 2004-2013 The University of Tennessee and The University
   6  *                         of Tennessee Research Foundation.  All rights
   7  *                         reserved.
   8  * Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
   9  *                         University of Stuttgart.  All rights reserved.
  10  * Copyright (c) 2004-2005 The Regents of the University of California.
  11  *                         All rights reserved.
  12  * Copyright (c) 2007      Cisco Systems, Inc.  All rights reserved.
  13  * Copyright (c) 2012      Los Alamos Nat Security, LLC. All rights reserved.
  14  * Copyright (c) 2012-2013 Inria.  All rights reserved.
  15  * Copyright (c) 2015      Research Organization for Information Science
  16  *                         and Technology (RIST). All rights reserved.
  17  * $COPYRIGHT$
  18  *
  19  * Additional copyrights may follow
  20  *
  21  * $HEADER$
  22  */
  23 #include "ompi_config.h"
  24 #include <stdio.h>
  25 
  26 #include "ompi/mpi/c/bindings.h"
  27 #include "ompi/runtime/params.h"
  28 #include "ompi/communicator/communicator.h"
  29 #include "ompi/errhandler/errhandler.h"
  30 #include "ompi/mca/topo/topo.h"
  31 #include "ompi/memchecker.h"
  32 
  33 #if OMPI_BUILD_MPI_PROFILING
  34 #if OPAL_HAVE_WEAK_SYMBOLS
  35 #pragma weak MPI_Graph_neighbors = PMPI_Graph_neighbors
  36 #endif
  37 #define MPI_Graph_neighbors PMPI_Graph_neighbors
  38 #endif
  39 
  40 static const char FUNC_NAME[] = "MPI_Graph_neighbors";
  41 
  42 
  43 int MPI_Graph_neighbors(MPI_Comm comm, int rank, int maxneighbors,
  44                         int neighbors[])
  45 {
  46     int err;
  47 
  48     MEMCHECKER(
  49         memchecker_comm(comm);
  50     );
  51 
  52     /* check the arguments */
  53     if (MPI_PARAM_CHECK) {
  54         OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
  55         if (ompi_comm_invalid(comm)) {
  56             return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_COMM,
  57                                            FUNC_NAME);
  58         }
  59         if (OMPI_COMM_IS_INTER(comm)) {
  60             return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_COMM,
  61                                            FUNC_NAME);
  62         }
  63         if ((0 > maxneighbors) || ((0 < maxneighbors) && NULL == neighbors)) {
  64             return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_ARG,
  65                                            FUNC_NAME);
  66         }
  67         if ((0 > rank) || (rank > ompi_group_size(comm->c_local_group))) {
  68             return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_RANK,
  69                                            FUNC_NAME);
  70         }
  71     }
  72 
  73     if (!OMPI_COMM_IS_GRAPH(comm)) {
  74         return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_TOPOLOGY,
  75                                        FUNC_NAME);
  76     }
  77     OPAL_CR_ENTER_LIBRARY();
  78 
  79     /* call the function */
  80     err = comm->c_topo->topo.graph.graph_neighbors(comm, rank, maxneighbors, neighbors);
  81     OPAL_CR_EXIT_LIBRARY();
  82 
  83     OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
  84 }
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root/ompi/mpi/c/graph_neighbors.c

DEFINITIONS
