71 строка
2.0 KiB
C
71 строка
2.0 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights 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 "mpi.h"
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#include "mpi/c/bindings.h"
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#include "opal/class/opal_list.h"
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#include "info/info.h"
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#include "errhandler/errhandler.h"
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#include "communicator/communicator.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Info_get_nkeys = PMPI_Info_get_nkeys
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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_Info_get_nkeys";
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/**
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* MPI_Info_get_nkeys - Returns the number of keys defined on an
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* 'MPI_Info' object
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*
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* @param info info object (handle)
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* @param nkeys number of keys defined on 'info' (integer)
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*
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* @retval MPI_SUCCESS
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* @retval MPI_ERR_ARG
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* @retval MPI_ERR_INFO
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*
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* This function returns the number of elements in the list
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* containing the key-value pairs
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*/
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int MPI_Info_get_nkeys(MPI_Info info, int *nkeys)
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{
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int err;
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (NULL == info || MPI_INFO_NULL == info ||
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ompi_info_is_freed(info)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO,
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FUNC_NAME);
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}
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if (NULL == nkeys) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
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FUNC_NAME);
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}
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}
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err = ompi_info_get_nkeys(info, nkeys);
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OMPI_ERRHANDLER_RETURN(err, MPI_COMM_WORLD, err, FUNC_NAME);
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}
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