Issue #330 allreduce_f.f90 replacement

allreduce_f.c

/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2005 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.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

#include "ompi_config.h"

#include "ompi/mpi/fortran/mpif-h/bindings.h"
#include "ompi/mpi/fortran/base/constants.h"

#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILE_LAYER
#pragma weak PMPI_ALLREDUCE = ompi_allreduce_f
#pragma weak pmpi_allreduce = ompi_allreduce_f
#pragma weak pmpi_allreduce_ = ompi_allreduce_f
#pragma weak pmpi_allreduce__ = ompi_allreduce_f

#pragma weak PMPI_Allreduce_f = ompi_allreduce_f
#pragma weak PMPI_Allreduce_f08 = ompi_allreduce_f
#elif OMPI_PROFILE_LAYER
OMPI_GENERATE_F77_BINDINGS (PMPI_ALLREDUCE,
                           pmpi_allreduce,
                           pmpi_allreduce_,
                           pmpi_allreduce__,
                           pompi_allreduce_f,
                           (char *sendbuf, char *recvbuf, MPI_Fint *count, MPI_Fint *datatype, MPI_Fint *op, MPI_Fint *comm, MPI_Fint *ierr),
                           (sendbuf, recvbuf, count, datatype, op, comm, ierr) )
#endif

#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_ALLREDUCE = ompi_allreduce_f
#pragma weak mpi_allreduce = ompi_allreduce_f
#pragma weak mpi_allreduce_ = ompi_allreduce_f
#pragma weak mpi_allreduce__ = ompi_allreduce_f

#pragma weak MPI_Allreduce_f = ompi_allreduce_f
#pragma weak MPI_Allreduce_f08 = ompi_allreduce_f
#endif

#if ! OPAL_HAVE_WEAK_SYMBOLS && ! OMPI_PROFILE_LAYER
OMPI_GENERATE_F77_BINDINGS (MPI_ALLREDUCE,
                           mpi_allreduce,
                           mpi_allreduce_,
                           mpi_allreduce__,
                           ompi_allreduce_f,
                           (char *sendbuf, char *recvbuf, MPI_Fint *count, MPI_Fint *datatype, MPI_Fint *op, MPI_Fint *comm, MPI_Fint *ierr),
                           (sendbuf, recvbuf, count, datatype, op, comm, ierr) )
#endif


#if OMPI_PROFILE_LAYER && ! OPAL_HAVE_WEAK_SYMBOLS
#include "ompi/mpi/fortran/mpif-h/profile/defines.h"
#endif

void ompi_allreduce_f(char *sendbuf, char *recvbuf, MPI_Fint *count,
		     MPI_Fint *datatype, MPI_Fint *op, MPI_Fint *comm,
		     MPI_Fint *ierr)
{
    int ierr_c;
    MPI_Comm c_comm;
    MPI_Datatype c_type;
    MPI_Op c_op;

    c_comm = MPI_Comm_f2c(*comm);
    c_type = MPI_Type_f2c(*datatype);
    c_op = MPI_Op_f2c(*op);

    {
        void *tmp = (void*) sendbuf;

#if OPAL_HAVE_WEAK_SYMBOLS
        opal_output(0, "Have weak symbols: %p %p %p %p",
                    (void*) &MPI_FORTRAN_IN_PLACE,
                    (void*) &mpi_fortran_in_place,
                    (void*) &mpi_fortran_in_place_,
                    (void*) &mpi_fortran_in_place__);
#elif OMPI_FORTRAN_CAPS
        opal_output(0, "Have CAPS: %p", (void*) &MPI_FORTRAN_IN_PLACE);
#elif OMPI_FORTRAN_PLAIN
        opal_output(0, "Have CAPS: %p", (void*) &mpi_fortran_in_place);
#elif OMPI_FORTRAN_SINGLE_UNDERSCORE
        opal_output(0, "Have CAPS: %p", (void*) &mpi_fortran_in_place_);
#elif OMPI_FORTRAN_DOUBLE_UNDERSCORE
        opal_output(0, "Have CAPS: %p", (void*) &mpi_fortran_in_place__);
#else
        #error Impossible!
#endif

        opal_output(0, "Fortran MPI_ALLREDUCE: got input buffer %p", tmp);
        tmp = OMPI_F2C_IN_PLACE(tmp);
        opal_output(0, "Fortran MPI_ALLREDUCE 2: after IN_PLACE %p (MPI_IN_PLACE = %p)", tmp, (void*) MPI_IN_PLACE);
        tmp = OMPI_F2C_BOTTOM(tmp);
        opal_output(0, "Fortran MPI_ALLREDUCE 3: after IN_PLACE %p (MPI_IN_PLACE = %p)", tmp, (void*) MPI_IN_PLACE);
    }
    sendbuf = (char *) OMPI_F2C_IN_PLACE(sendbuf);
    sendbuf = (char *) OMPI_F2C_BOTTOM(sendbuf);
    recvbuf = (char *) OMPI_F2C_BOTTOM(recvbuf);

    ierr_c = MPI_Allreduce(sendbuf, recvbuf,
                           OMPI_FINT_2_INT(*count),
                           c_type, c_op, c_comm);
    if (NULL != ierr) *ierr = OMPI_INT_2_FINT(ierr_c);
}