/* -*- 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_Raccumulate */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Raccumulate = PMPI_Raccumulate

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Raccumulate  MPI_Raccumulate

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Raccumulate as PMPI_Raccumulate

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Raccumulate(const void *origin_addr, int origin_count,

                    MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp,

                    int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win,

                    MPI_Request * request)

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

#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_Raccumulate

#define MPI_Raccumulate PMPI_Raccumulate

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Raccumulate

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

MPI_Raccumulate - Accumulate data into the target process using remote memory

access and return a request handle for the operation.

'MPI_Raccumulate' is similar to 'MPI_Accumulate', except that it allocates a

communication request object and associates it with the request handle (the

argument request) that can be used to wait or test for completion.  The

completion of an 'MPI_Raccumulate' operation indicates that the origin buffer is

free to be updated. It does not indicate that the operation has completed at

the target window.

Input Parameters:

+ origin_addr - initial address of buffer (choice)

. origin_count - number of entries in buffer (nonnegative integer)

. origin_datatype - datatype of each buffer entry (handle)

. target_rank - rank of target (nonnegative integer)

. target_disp - displacement from start of window to beginning of target

  buffer (nonnegative integer)

. target_count - number of entries in target buffer (nonnegative integer)

. target_datatype - datatype of each entry in target buffer (handle)

. op - predefined reduce operation (handle)

- win - window object (handle)

Output Parameters:

. request - RMA request (handle)

Notes:

The basic components of both the origin and target datatype must be the same

predefined datatype (e.g., all 'MPI_INT' or all 'MPI_DOUBLE_PRECISION').

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_ARG

.N MPI_ERR_COUNT

.N MPI_ERR_RANK

.N MPI_ERR_TYPE

.N MPI_ERR_WIN

.seealso: MPI_Accumulate

@*/

int MPI_Raccumulate(const void *origin_addr, int origin_count, MPI_Datatype

                    origin_datatype, int target_rank, MPI_Aint

                    target_disp, int target_count, MPI_Datatype

                    target_datatype, MPI_Op op, MPI_Win win, MPI_Request * request)

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_Win *win_ptr = NULL;

    MPIR_Request *request_ptr = NULL;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_RACCUMULATE);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPIR_FUNC_TERSE_RMA_ENTER(MPID_STATE_MPI_RACCUMULATE);

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

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_ERRTEST_WIN(win, mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

    /* Convert MPI object handles to object pointers */

    MPIR_Win_get_ptr(win, win_ptr);

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

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_Comm *comm_ptr;

            /* Validate win_ptr */

            MPIR_Win_valid_ptr(win_ptr, mpi_errno);

            if (mpi_errno)

                goto fn_fail;

            MPIR_ERRTEST_COUNT(origin_count, mpi_errno);

            MPIR_ERRTEST_DATATYPE(origin_datatype, "origin_datatype", mpi_errno);

            MPIR_ERRTEST_USERBUFFER(origin_addr, origin_count, origin_datatype, mpi_errno);

            MPIR_ERRTEST_COUNT(target_count, mpi_errno);

            MPIR_ERRTEST_DATATYPE(target_datatype, "target_datatype", mpi_errno);

            if (win_ptr->create_flavor != MPI_WIN_FLAVOR_DYNAMIC)

                MPIR_ERRTEST_DISP(target_disp, mpi_errno);

            if (HANDLE_GET_KIND(origin_datatype) != HANDLE_KIND_BUILTIN) {

                MPIR_Datatype *datatype_ptr = NULL;

                MPIR_Datatype_get_ptr(origin_datatype, datatype_ptr);

                MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);

                if (mpi_errno != MPI_SUCCESS)

                    goto fn_fail;

                MPIR_Datatype_committed_ptr(datatype_ptr, mpi_errno);

                if (mpi_errno != MPI_SUCCESS)

                    goto fn_fail;

            }

            if (HANDLE_GET_KIND(target_datatype) != HANDLE_KIND_BUILTIN) {

                MPIR_Datatype *datatype_ptr = NULL;

                MPIR_Datatype_get_ptr(target_datatype, datatype_ptr);

                MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);

                if (mpi_errno != MPI_SUCCESS)

                    goto fn_fail;

                MPIR_Datatype_committed_ptr(datatype_ptr, mpi_errno);

                if (mpi_errno != MPI_SUCCESS)

                    goto fn_fail;

            }

            comm_ptr = win_ptr->comm_ptr;

            MPIR_ERRTEST_SEND_RANK(comm_ptr, target_rank, mpi_errno);

            MPIR_ERRTEST_OP_ACC(op, mpi_errno);

            MPIR_ERRTEST_ARGNULL(request, "request", mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

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

    mpi_errno = MPID_Raccumulate(origin_addr, origin_count,

                                 origin_datatype,

                                 target_rank, target_disp, target_count,

                                 target_datatype, op, win_ptr, &request_ptr);

    if (mpi_errno != MPI_SUCCESS)

        goto fn_fail;

    *request = request_ptr->handle;

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

  fn_exit:

    MPIR_FUNC_TERSE_RMA_EXIT(MPID_STATE_MPI_RACCUMULATE);

    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_raccumulate",

                                 "**mpi_raccumulate %p %d %D %d %d %d %D %O %W %p", origin_addr,

                                 origin_count, origin_datatype, target_rank, target_disp,

                                 target_count, target_datatype, op, win, request);

    }

#endif

    mpi_errno = MPIR_Err_return_win(win_ptr, FCNAME, mpi_errno);

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}