/*
 * Copyright (c) 2004-2007 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) 2004-2008 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) 2006      Cisco Systems, Inc.  All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */
#include "ompi_config.h"

#include <stdio.h>

#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/info/info.h"
#include "ompi/win/win.h"
#include "ompi/memchecker.h"

#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Win_allocate = PMPI_Win_allocate
#endif

#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif

static const char FUNC_NAME[] = "MPI_Win_allocate";


int MPI_Win_allocate(MPI_Aint size, int disp_unit, MPI_Info info,
                     MPI_Comm comm, void *baseptr, MPI_Win *win)
{
    int ret = MPI_SUCCESS;
    
    MEMCHECKER(
        memchecker_comm(comm);
    );
    /* argument checking */
    if (MPI_PARAM_CHECK) {
        OMPI_ERR_INIT_FINALIZE(FUNC_NAME);

        if (ompi_comm_invalid (comm)) {
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, 
                                          FUNC_NAME);

        } else if (NULL == info || ompi_info_is_freed(info)) {
            return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_INFO,
                                          FUNC_NAME);

        } else if (NULL == win) {
            return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_WIN, FUNC_NAME);
        } else if ( size < 0 ) {
            return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_SIZE, FUNC_NAME);            
        } else if ( disp_unit <= 0 ) {
            return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_DISP, FUNC_NAME);
        }
    }

    /* communicator must be an intracommunicator */
    if (OMPI_COMM_IS_INTER(comm)) {
        return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COMM, FUNC_NAME);
    }

    OPAL_CR_ENTER_LIBRARY();

    /* create window and return */
    ret = ompi_win_allocate((size_t)size, disp_unit, info,
                            comm, baseptr, win);
    if (OMPI_SUCCESS != ret) {
        *win = MPI_WIN_NULL;
        OPAL_CR_EXIT_LIBRARY();
        return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_WIN, FUNC_NAME);
    }

    OPAL_CR_EXIT_LIBRARY();
    return MPI_SUCCESS;
}
