openmpi/ompi/mpi/c/info_create.c

/*
 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2005 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, 
 *                         University of Stuttgart.  All rights reserved.
 * Copyright (c) 2004-2005 The Regents of the University of California.
 *                         All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

#include "ompi_config.h"

#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/info/info.h"

#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Info_create = PMPI_Info_create
#endif

#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif

static const char FUNC_NAME[] = "MPI_Info_create";

/**
 * Create a new info object 
 *
 * @param info Pointer to the MPI_Info handle
 *
 * @retval MPI_SUCCESS
 * @retval MPI_ERR_INFO
 * @retval MPI_ERR_NO_MEM
 *
 * When an MPI_Info object is not being used, it should be freed using
 * MPI_Info_free
 */
int MPI_Info_create(MPI_Info *info) 
{

    OPAL_CR_NOOP_PROGRESS();

    if (MPI_PARAM_CHECK) {
        OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
        if (NULL == info) {
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO,
                                          FUNC_NAME);
        }
    }

    /*
     * Call the object create function. This function not only
     * allocates the space for MPI_Info, but also calls all the
     * relevant init functions. Should I check if the fortran 
     * handle is valid
     */
    (*info) = OBJ_NEW(ompi_info_t);
    if (NULL == (*info)) {
        return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_NO_MEM,
                                      FUNC_NAME);
    }

    return MPI_SUCCESS;
}