/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2021 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 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) 2011-2012 Cisco Systems, Inc.  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/fortran/mpif-h/bindings.h"
#include "ompi/mpi/fortran/base/constants.h"
#include "ompi/mca/coll/base/coll_base_util.h"

#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak PMPI_IGATHERV = ompi_igatherv_f
#pragma weak pmpi_igatherv = ompi_igatherv_f
#pragma weak pmpi_igatherv_ = ompi_igatherv_f
#pragma weak pmpi_igatherv__ = ompi_igatherv_f

#pragma weak PMPI_Igatherv_f = ompi_igatherv_f
#pragma weak PMPI_Igatherv_f08 = ompi_igatherv_f
#else
OMPI_GENERATE_F77_BINDINGS (PMPI_IGATHERV,
                            pmpi_igatherv,
                            pmpi_igatherv_,
                            pmpi_igatherv__,
                            pompi_igatherv_f,
                            (char *sendbuf, MPI_Fint *sendcount, MPI_Fint *sendtype, char *recvbuf, MPI_Fint *recvcounts, MPI_Fint *displs, MPI_Fint *recvtype, MPI_Fint *root, MPI_Fint *comm, MPI_Fint *request, MPI_Fint *ierr),
                            (sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root, comm, request, ierr) )
#endif
#endif

#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_IGATHERV = ompi_igatherv_f
#pragma weak mpi_igatherv = ompi_igatherv_f
#pragma weak mpi_igatherv_ = ompi_igatherv_f
#pragma weak mpi_igatherv__ = ompi_igatherv_f

#pragma weak MPI_Igatherv_f = ompi_igatherv_f
#pragma weak MPI_Igatherv_f08 = ompi_igatherv_f
#else
#if ! OMPI_BUILD_MPI_PROFILING
OMPI_GENERATE_F77_BINDINGS (MPI_IGATHERV,
                            mpi_igatherv,
                            mpi_igatherv_,
                            mpi_igatherv__,
                            ompi_igatherv_f,
                            (char *sendbuf, MPI_Fint *sendcount, MPI_Fint *sendtype, char *recvbuf, MPI_Fint *recvcounts, MPI_Fint *displs, MPI_Fint *recvtype, MPI_Fint *root, MPI_Fint *comm, MPI_Fint *request,MPI_Fint *ierr),
                            (sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root, comm, request, ierr) )
#else
#define ompi_igatherv_f pompi_igatherv_f
#endif
#endif


void ompi_igatherv_f(char *sendbuf, MPI_Fint *sendcount, MPI_Fint *sendtype,
                     char *recvbuf, MPI_Fint *recvcounts, MPI_Fint *displs,
                     MPI_Fint *recvtype, MPI_Fint *root, MPI_Fint *comm,
                     MPI_Fint *request, MPI_Fint *ierr)
{
    MPI_Comm c_comm;
    MPI_Datatype c_sendtype, c_recvtype;
    MPI_Request c_request;
    int size, idx = 0, c_ierr;
    OMPI_ARRAY_NAME_DECL(recvcounts);
    OMPI_ARRAY_NAME_DECL(displs);

    c_comm = PMPI_Comm_f2c(*comm);
    c_sendtype = PMPI_Type_f2c(*sendtype);
    c_recvtype = PMPI_Type_f2c(*recvtype);

    PMPI_Comm_size(c_comm, &size);
    OMPI_ARRAY_FINT_2_INT(recvcounts, size);
    OMPI_ARRAY_FINT_2_INT(displs, size);

    sendbuf = (char *) OMPI_F2C_IN_PLACE(sendbuf);
    sendbuf = (char *) OMPI_F2C_BOTTOM(sendbuf);
    recvbuf = (char *) OMPI_F2C_BOTTOM(recvbuf);

    c_ierr = PMPI_Igatherv(sendbuf, OMPI_FINT_2_INT(*sendcount),
                         c_sendtype, recvbuf,
                         OMPI_ARRAY_NAME_CONVERT(recvcounts),
                         OMPI_ARRAY_NAME_CONVERT(displs),
                         c_recvtype,
                         OMPI_FINT_2_INT(*root),
                          c_comm, &c_request);
    if (NULL != ierr) *ierr = OMPI_INT_2_FINT(c_ierr);
    if (MPI_SUCCESS == c_ierr) *request = PMPI_Request_c2f(c_request);

    if ( REQUEST_COMPLETE(c_request)) {
        OMPI_ARRAY_FINT_2_INT_CLEANUP(recvcounts);
        OMPI_ARRAY_FINT_2_INT_CLEANUP(displs);
    } else {
        ompi_coll_base_nbc_request_t* nb_request = (ompi_coll_base_nbc_request_t*)c_request;
        if (recvcounts != OMPI_ARRAY_NAME_CONVERT(recvcounts)) {
            nb_request->data.release_arrays[idx++] = OMPI_ARRAY_NAME_CONVERT(recvcounts);
            nb_request->data.release_arrays[idx++] = OMPI_ARRAY_NAME_CONVERT(displs);
        }
        nb_request->data.release_arrays[idx]   = NULL;
    }
}
