/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2020 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2008 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 (c) 2009      Oak Ridge National Labs.  All rights reserved.
 * Copyright (c) 2013      Los Alamos National Security, LLC. All rights
 *                         reserved.
 * Copyright (c) 2015      Research Organization for Information Science
 *                         and Technology (RIST). 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/datatype/ompi_datatype.h"
#include "ompi/memchecker.h"

#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_Type_size = PMPI_Type_size
#endif
#define MPI_Type_size PMPI_Type_size
#endif

static const char FUNC_NAME[] = "MPI_Type_size";

int MPI_Type_size(MPI_Datatype type, int *size)
{
    size_t type_size;
    MEMCHECKER(
        memchecker_datatype(type);
    );

    if (MPI_PARAM_CHECK) {
        OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
        if (NULL == type || MPI_DATATYPE_NULL == type) {
            return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_TYPE, FUNC_NAME);
        } else if (NULL == size) {
            return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_ARG, FUNC_NAME);
        }
    }

    opal_datatype_type_size ( &type->super, &type_size);

    *size = (type_size > (size_t) INT_MAX) ? MPI_UNDEFINED : (int) type_size;

    return MPI_SUCCESS;
}
