/*
 * Copyright (c) 2016-2018 Inria. All rights reserved.
 * $COPYRIGHT$
 *
 * Additional copyrights may follow
 *
 * $HEADER$
 */

#include <ompi_config.h>
#include <ompi/op/op.h>
#include <ompi/request/request.h>
#include <ompi/datatype/ompi_datatype.h>
#include <ompi/communicator/communicator.h>
#include "coll_monitoring.h"

int mca_coll_monitoring_exscan(const void *sbuf, void *rbuf, int count,
                               struct ompi_datatype_t *dtype,
                               struct ompi_op_t *op,
                               struct ompi_communicator_t *comm,
                               mca_coll_base_module_t *module)
{
    mca_coll_monitoring_module_t*monitoring_module = (mca_coll_monitoring_module_t*) module;
    size_t type_size, data_size;
    const int comm_size = ompi_comm_size(comm);
    const int my_rank = ompi_comm_rank(comm);
    int i, rank;
    ompi_datatype_type_size(dtype, &type_size);
    data_size = count * type_size;
    mca_common_monitoring_coll_a2a(data_size * (comm_size - my_rank), monitoring_module->data);
    for( i = my_rank + 1; i < comm_size; ++i ) {
        /**
         * If this fails the destination is not part of my MPI_COM_WORLD
         * Lookup its name in the rank hastable to get its MPI_COMM_WORLD rank
         */
        if( OPAL_SUCCESS == mca_common_monitoring_get_world_rank(i, comm->c_remote_group, &rank) ) {
            mca_common_monitoring_record_coll(rank, data_size);
        }
    }
    return monitoring_module->real.coll_exscan(sbuf, rbuf, count, dtype, op, comm, monitoring_module->real.coll_exscan_module);
}

int mca_coll_monitoring_iexscan(const void *sbuf, void *rbuf, int count,
                                struct ompi_datatype_t *dtype,
                                struct ompi_op_t *op,
                                struct ompi_communicator_t *comm,
                                ompi_request_t ** request,
                                mca_coll_base_module_t *module)
{
    mca_coll_monitoring_module_t*monitoring_module = (mca_coll_monitoring_module_t*) module;
    size_t type_size, data_size;
    const int comm_size = ompi_comm_size(comm);
    const int my_rank = ompi_comm_rank(comm);
    int i, rank;
    ompi_datatype_type_size(dtype, &type_size);
    data_size = count * type_size;
    mca_common_monitoring_coll_a2a(data_size * (comm_size - my_rank), monitoring_module->data);
    for( i = my_rank + 1; i < comm_size; ++i ) {
        /**
         * If this fails the destination is not part of my MPI_COM_WORLD
         * Lookup its name in the rank hastable to get its MPI_COMM_WORLD rank
         */
        if( OPAL_SUCCESS == mca_common_monitoring_get_world_rank(i, comm->c_remote_group, &rank) ) {
            mca_common_monitoring_record_coll(rank, data_size);
        }
    }
    return monitoring_module->real.coll_iexscan(sbuf, rbuf, count, dtype, op, comm, request, monitoring_module->real.coll_iexscan_module);
}
