root/ompi/mpi/c/comm_get_attr.c

DEFINITIONS

1. MPI_Comm_get_attr

   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) 2004-2006 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) 2009      Cisco Systems, Inc.  All rights reserved.
  13  * Copyright (c) 2015      Research Organization for Information Science
  14  *                         and Technology (RIST). All rights reserved.
  15  * $COPYRIGHT$
  16  *
  17  * Additional copyrights may follow
  18  *
  19  * $HEADER$
  20  */
  21 #include "ompi_config.h"
  22 #include <stdio.h>
  23 
  24 #include "ompi/mpi/c/bindings.h"
  25 #include "ompi/runtime/params.h"
  26 #include "ompi/communicator/communicator.h"
  27 #include "ompi/errhandler/errhandler.h"
  28 #include "ompi/attribute/attribute.h"
  29 #include "ompi/memchecker.h"
  30 
  31 #if OMPI_BUILD_MPI_PROFILING
  32 #if OPAL_HAVE_WEAK_SYMBOLS
  33 #pragma weak MPI_Comm_get_attr = PMPI_Comm_get_attr
  34 #endif
  35 #define MPI_Comm_get_attr PMPI_Comm_get_attr
  36 #endif
  37 
  38 static const char FUNC_NAME[] = "MPI_Comm_get_attr";
  39 
  40 
  41 int MPI_Comm_get_attr(MPI_Comm comm, int comm_keyval,
  42                       void *attribute_val, int *flag)
  43 {
  44     int ret;
  45 
  46     MEMCHECKER(
  47         memchecker_comm(comm);
  48     );
  49 
  50     if (MPI_PARAM_CHECK) {
  51         OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
  52         if ((NULL == attribute_val) || (NULL == flag)) {
  53             return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
  54         } else if (ompi_comm_invalid(comm)) {
  55             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
  56                                           FUNC_NAME);
  57         } else if (MPI_KEYVAL_INVALID == comm_keyval) {
  58             return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_KEYVAL, FUNC_NAME);
  59         }
  60     }
  61 
  62     OPAL_CR_ENTER_LIBRARY();
  63 
  64     /* This stuff is very confusing.  Be sure to see
  65        src/attribute/attribute.c for a lengthy comment explaining Open
  66        MPI attribute behavior. */
  67 
  68     ret = ompi_attr_get_c(comm->c_keyhash, comm_keyval,
  69                           (void**)attribute_val, flag);
  70     OMPI_ERRHANDLER_RETURN(ret, comm, MPI_ERR_OTHER, FUNC_NAME);
  71 }