/* * 
 * This file is part of bufferpool
 *
 * Copyright (C) 2007 by LScube team <team@streaming.polito.it>
 * See AUTHORS for more details
 * 
 * bufferpool is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * bufferpool is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with bufferpool; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 
 *
 */

#include <sys/mman.h>

#include <bufferpool.h>


int bp_shm_unmap(BPBuffer * buffer)
{
    int slots_err;
    int control_err;

    if (buffer->type != buff_shm) {
        bp_log(FNC_LOG_ERR,
            "Bufferpool desn't seems to be a Shared Memory object");
        return 1;
    }

    if ((slots_err =
         munmap(buffer->slots, buffer->control->nslots * sizeof(BPSlot))))
        bp_log(FNC_LOG_ERR, "Error unmapping BPSlots SHM object\n");
    if ((control_err = munmap(buffer->control, sizeof(BPControl))))
        bp_log(FNC_LOG_ERR, "Error unmapping BPControl SHM object\n");

    return slots_err ? slots_err : control_err;
}