openmpi/ompi/mpi/c/win_free.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.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */
#include "ompi_config.h"
#include <stdio.h>

#include "mpi/c/bindings.h"
#include "win/win.h"

#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Win_free = PMPI_Win_free
#endif

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

static const char FUNC_NAME[] = "MPI_Win_free";


int MPI_Win_free(MPI_Win *win) 
{
    int ret, mode;

    if (MPI_PARAM_CHECK) {
        OMPI_ERR_INIT_FINALIZE(FUNC_NAME);

        if (ompi_win_invalid(*win)) {
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_WIN, FUNC_NAME);
        }

        /* we allow users to be in an epoch, because that tends to
           happen with people using MPI_FENCE.  However, do not allow
           users to be in a Lock / Unlock or a PWSC synchronization */
        mode = ompi_win_get_mode(win);
        if (0 != (mode & (OMPI_WIN_POSTED | OMPI_WIN_STARTED | 
                          OMPI_WIN_LOCK_ACCESS))) {
            return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, 
                                          MPI_ERR_RMA_CONFLICT, 
                                          FUNC_NAME);
        }
    }

    ret = ompi_win_free(*win);
    if (OMPI_SUCCESS == ret) *win = MPI_WIN_NULL;

    OMPI_ERRHANDLER_RETURN(ret, *win, ret, FUNC_NAME);
}