/* -*- 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"

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

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Type_create_hvector = PMPI_Type_create_hvector

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Type_create_hvector  MPI_Type_create_hvector

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Type_create_hvector as PMPI_Type_create_hvector

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Type_create_hvector(int count, int blocklength, MPI_Aint stride, MPI_Datatype oldtype,

                            MPI_Datatype * newtype)

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

#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_create_hvector

#define MPI_Type_create_hvector PMPI_Type_create_hvector

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Type_create_hvector

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

   MPI_Type_create_hvector - Create a datatype with a constant stride given

     in bytes

Input Parameters:

+ count - number of blocks (nonnegative integer)

. blocklength - number of elements in each block (nonnegative integer)

. stride - number of bytes between start of each block (address integer)

- oldtype - old datatype (handle)

Output Parameters:

. newtype - new datatype (handle)

.N ThreadSafe

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_TYPE

.N MPI_ERR_ARG

@*/

int MPI_Type_create_hvector(int count,

                            int blocklength,

                            MPI_Aint stride, MPI_Datatype oldtype, MPI_Datatype * newtype)

{

    int mpi_errno = MPI_SUCCESS;

    MPI_Datatype new_handle;

    MPIR_Datatype *new_dtp;

    int ints[2];

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_TYPE_CREATE_HVECTOR);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_TYPE_CREATE_HVECTOR);

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_Datatype *datatype_ptr = NULL;

            MPIR_ERRTEST_COUNT(count, mpi_errno);

            MPIR_ERRTEST_ARGNEG(blocklength, "blocklen", mpi_errno);

            MPIR_ERRTEST_DATATYPE(oldtype, "datatype", mpi_errno);

            if (HANDLE_GET_KIND(oldtype) != HANDLE_KIND_BUILTIN) {

                MPIR_Datatype_get_ptr(oldtype, datatype_ptr);

                MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);

                if (mpi_errno != MPI_SUCCESS)

                    goto fn_fail;

            }

            MPIR_ERRTEST_ARGNULL(newtype, "newtype", mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

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

    mpi_errno = MPIR_Type_vector(count, blocklength, stride, 1, /* stride in bytes */

                                 oldtype, &new_handle);

    if (mpi_errno != MPI_SUCCESS)

        goto fn_fail;

    ints[0] = count;

    ints[1] = blocklength;

    MPIR_Datatype_get_ptr(new_handle, new_dtp);

    mpi_errno = MPIR_Datatype_set_contents(new_dtp, MPI_COMBINER_HVECTOR, 2,    /* ints (count, blocklength) */

                                           1,   /* aints */

                                           1,   /* types */

                                           ints, &stride, &oldtype);

    if (mpi_errno != MPI_SUCCESS)

        goto fn_fail;

    MPIR_OBJ_PUBLISH_HANDLE(*newtype, new_handle);

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

  fn_exit:

    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_TYPE_CREATE_HVECTOR);

    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_create_hvector",

                                         "**mpi_type_create_hvector %d %d %d %D %p", count,

                                         blocklength, stride, oldtype, newtype);

    }

#endif

    mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}