/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*

 *

 *  (C) 2001 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include "mpiimpl.h"

#include "mpir_datatype.h"

#include "mpir_dataloop.h"

#include "datatype.h"

/* -- Begin Profiling Symbol Block for routine MPI_Type_get_contents */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Type_get_contents = PMPI_Type_get_contents

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Type_get_contents  MPI_Type_get_contents

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Type_get_contents as PMPI_Type_get_contents

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Type_get_contents(MPI_Datatype datatype, int max_integers, int max_addresses,

                          int max_datatypes, int array_of_integers[],

                          MPI_Aint array_of_addresses[], MPI_Datatype array_of_datatypes[])

    __attribute__ ((weak, alias("PMPI_Type_get_contents")));

#endif

/* -- End Profiling Symbol Block */

/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build

   the MPI routines */

#ifndef MPICH_MPI_FROM_PMPI

#undef MPI_Type_get_contents

#define MPI_Type_get_contents PMPI_Type_get_contents

/*@

  MPIR_Type_get_contents - get content information from datatype

Input Parameters:

+ datatype - MPI datatype

. max_integers - size of array_of_integers

. max_addresses - size of array_of_addresses

- max_datatypes - size of array_of_datatypes

Output Parameters:

+ array_of_integers - integers used in creating type

. array_of_addresses - MPI_Aints used in creating type

- array_of_datatypes - MPI_Datatypes used in creating type

@*/

int MPIR_Type_get_contents(MPI_Datatype datatype,

                           int max_integers,

                           int max_addresses,

                           int max_datatypes,

                           int array_of_integers[],

                           MPI_Aint array_of_addresses[], MPI_Datatype array_of_datatypes[])

{

    int i, mpi_errno;

    MPIR_Datatype *dtp;

    MPIR_Datatype_contents *cp;

    /* --BEGIN ERROR HANDLING-- */

    /* these are checked at the MPI layer, so I feel that asserts

     * are appropriate.

     */

    MPIR_Assert(HANDLE_GET_KIND(datatype) != HANDLE_KIND_BUILTIN);

    MPIR_Assert(datatype != MPI_FLOAT_INT &&

                datatype != MPI_DOUBLE_INT &&

                datatype != MPI_LONG_INT &&

                datatype != MPI_SHORT_INT && datatype != MPI_LONG_DOUBLE_INT);

    /* --END ERROR HANDLING-- */

    MPIR_Datatype_get_ptr(datatype, dtp);

    cp = dtp->contents;

    MPIR_Assert(cp != NULL);

    /* --BEGIN ERROR HANDLING-- */

    if (max_integers < cp->nr_ints || max_addresses < cp->nr_aints || max_datatypes < cp->nr_types) {

        mpi_errno = MPIR_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,

                                         "MPIR_Type_get_contents", __LINE__,

                                         MPI_ERR_OTHER, "**dtype", 0);

        return mpi_errno;

    }

    /* --END ERROR HANDLING-- */

    if (cp->nr_ints > 0) {

        MPII_Datatype_get_contents_ints(cp, array_of_integers);

    }

    if (cp->nr_aints > 0) {

        MPII_Datatype_get_contents_aints(cp, array_of_addresses);

    }

    if (cp->nr_types > 0) {

        MPII_Datatype_get_contents_types(cp, array_of_datatypes);

    }

    for (i = 0; i < cp->nr_types; i++) {

        if (HANDLE_GET_KIND(array_of_datatypes[i]) != HANDLE_KIND_BUILTIN) {

            MPIR_Datatype_get_ptr(array_of_datatypes[i], dtp);

            MPIR_Datatype_ptr_add_ref(dtp);

        }

    }

    return MPI_SUCCESS;

}

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Type_get_contents

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

   MPI_Type_get_contents - get type contents

Input Parameters:

+  datatype - datatype to access (handle)

.  max_integers - number of elements in array_of_integers (non-negative integer)

.  max_addresses - number of elements in array_of_addresses (non-negative integer)

-  max_datatypes - number of elements in array_of_datatypes (non-negative integer)

Output Parameters:

+  array_of_integers - contains integer arguments used in constructing the datatype (array of integers)

.  array_of_addresses - contains address arguments used in constructing the datatype (array of integers)

-  array_of_datatypes - contains datatype arguments used in constructing the datatype (array of handles)

   Notes:

.N Fortran

.N Errors

.N MPI_SUCCESS

@*/

int MPI_Type_get_contents(MPI_Datatype datatype,

                          int max_integers,

                          int max_addresses,

                          int max_datatypes,

                          int array_of_integers[],

                          MPI_Aint array_of_addresses[], MPI_Datatype array_of_datatypes[])

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_TYPE_GET_CONTENTS);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_TYPE_GET_CONTENTS);

    /* Validate parameters, especially handles needing to be converted */

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif

    /* Validate parameters and objects (post conversion) */

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_Datatype *datatype_ptr = NULL;

            /* Check for built-in type */

            if (HANDLE_GET_KIND(datatype) == HANDLE_KIND_BUILTIN) {

                mpi_errno = MPIR_Err_create_code(MPI_SUCCESS,

                                                 MPIR_ERR_RECOVERABLE,

                                                 FCNAME, __LINE__,

                                                 MPI_ERR_TYPE, "**contentspredef", 0);

                goto fn_fail;

            }

            /* all but MPI_2INT of the pair types are not stored as builtins

             * but should be treated similarly.

             */

            if (datatype == MPI_FLOAT_INT ||

                datatype == MPI_DOUBLE_INT ||

                datatype == MPI_LONG_INT ||

                datatype == MPI_SHORT_INT || datatype == MPI_LONG_DOUBLE_INT) {

                mpi_errno = MPIR_Err_create_code(MPI_SUCCESS,

                                                 MPIR_ERR_RECOVERABLE,

                                                 FCNAME, __LINE__,

                                                 MPI_ERR_TYPE, "**contentspredef", 0);

                goto fn_fail;

            }

            /* Convert MPI object handles to object pointers */

            MPIR_Datatype_get_ptr(datatype, datatype_ptr);

            /* Validate datatype_ptr */

            MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);

            /* If comm_ptr is not value, it will be reset to null */

            if (mpi_errno)

                goto fn_fail;

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

    /* ... body of routine ...  */

    mpi_errno = MPIR_Type_get_contents(datatype,

                                       max_integers,

                                       max_addresses,

                                       max_datatypes,

                                       array_of_integers, array_of_addresses, array_of_datatypes);

    if (mpi_errno != MPI_SUCCESS)

        goto fn_fail;

    /* ... end of body of routine ... */

  fn_exit:

    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_TYPE_GET_CONTENTS);

    MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    return mpi_errno;

  fn_fail:

    /* --BEGIN ERROR HANDLING-- */

#ifdef HAVE_ERROR_CHECKING

    {

        mpi_errno =

            MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,

                                 "**mpi_type_get_contents",

                                 "**mpi_type_get_contents %D %d %d %d %p %p %p", datatype,

                                 max_integers, max_addresses, max_datatypes, array_of_integers,

                                 array_of_addresses, array_of_datatypes);

    }

#endif

    mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}