ompi/mpi/c/info_get

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This source file includes following definitions.
MPI_Info_get_nkeys
   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) 2004-2005 The University of Tennessee and The University
   6  *                         of Tennessee Research Foundation.  All rights
   7  *                         reserved.
   8  * Copyright (c) 2004-2005 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) 2015      Research Organization for Information Science
  13  *                         and Technology (RIST). All rights reserved.
  14  * $COPYRIGHT$
  15  *
  16  * Additional copyrights may follow
  17  *
  18  * $HEADER$
  19  */
  20 
  21 #include "ompi_config.h"
  22 
  23 #include "ompi/mpi/c/bindings.h"
  24 #include "ompi/runtime/params.h"
  25 #include "ompi/communicator/communicator.h"
  26 #include "ompi/errhandler/errhandler.h"
  27 #include "ompi/info/info.h"
  28 
  29 #if OMPI_BUILD_MPI_PROFILING
  30 #if OPAL_HAVE_WEAK_SYMBOLS
  31 #pragma weak MPI_Info_get_nkeys = PMPI_Info_get_nkeys
  32 #endif
  33 #define MPI_Info_get_nkeys PMPI_Info_get_nkeys
  34 #endif
  35 
  36 static const char FUNC_NAME[] = "MPI_Info_get_nkeys";
  37 
  38 
  39 /**
  40  * MPI_Info_get_nkeys - Returns the number of keys defined on an
  41  * 'MPI_Info' object
  42  *
  43  * @param info info object (handle)
  44  * @param nkeys number of keys defined on 'info' (integer)
  45  *
  46  * @retval MPI_SUCCESS
  47  * @retval MPI_ERR_ARG
  48  * @retval MPI_ERR_INFO
  49  *
  50  * This function returns the number of elements in the list
  51  * containing the key-value pairs
  52  */
  53 int MPI_Info_get_nkeys(MPI_Info info, int *nkeys)
  54 {
  55     int err;
  56 
  57     if (MPI_PARAM_CHECK) {
  58         OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
  59         if (NULL == info || MPI_INFO_NULL == info ||
  60             ompi_info_is_freed(info)) {
  61             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO,
  62                                           FUNC_NAME);
  63         }
  64         if (NULL == nkeys) {
  65             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
  66                                           FUNC_NAME);
  67         }
  68     }
  69 
  70     OPAL_CR_ENTER_LIBRARY();
  71 
  72     err = ompi_info_get_nkeys(info, nkeys);
  73     OMPI_ERRHANDLER_RETURN(err, MPI_COMM_WORLD, err, FUNC_NAME);
  74 }
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root/ompi/mpi/c/info_get_nkeys.c

DEFINITIONS
