omsbuff_shm_unmap.c

linux下的rtp的实例源代码

/* * 
 *  $Id: OMSbuff_shm_unmap.c 324 2006-03-23 12:02:22Z shawill $
 *  
 *  This file is part of Fenice
 *
 *  Fenice -- Open Media Server
 *
 *  Copyright (C) 2004 by
 *  	
 *	- Giampaolo Mancini	<[e-mail]>
 *	- Francesco Varano	<[e-mail]>
 *	- Marco Penno		<[e-mail]>
 *	- Federico Ridolfo	<[e-mail]>
 *	- Eugenio Menegatti 	<[e-mail]>
 *	- Stefano Cau
 *	- Giuliano Emma
 *	- Stefano Oldrini
 * 
 *  Fenice is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  Fenice 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Fenice; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *  
 * */

#include <sys/mman.h>

#include <fenice/bufferpool.h>
#include <fenice/fnc_log.h>

int OMSbuff_shm_unmap(OMSBuffer *buffer)
{
	int slots_err;
	int control_err;
	
	if (buffer->type != buff_shm) {
		fnc_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(OMSSlot))) )
		fnc_log(FNC_LOG_ERR, "Error unmapping OMSSlots SHM object\n");
	if ( (control_err = munmap(buffer->control, sizeof(OMSControl))) )
		fnc_log(FNC_LOG_ERR, "Error unmapping OMSControl SHM object\n");
		
	return slots_err ? slots_err : control_err;
}