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/*
* $Id: db_pool.h,v 1.1 2005/06/16 12:07:08 miconda Exp $
*
* Copyright (C) 2001-2005 iptel.org
*
* This file is part of openser, a free SIP server.
*
* openser 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
*
* openser 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _DB_POOL_H
#define _DB_POOL_H
#include "db_id.h"
#include "db_con.h"
/*
* This is a stub that contains all attributes
* that pool members must have, it is not really
* used, real connection structures are created
* by database backends. All such structures (
* created by the backends) must have these
* attributes.
*/
struct pool_con {
struct db_id* id; /* Connection identifier */
unsigned int ref; /* Reference count */
struct pool_con* next; /* Next element in the pool */
};
/*
* Search the pool for a connection with
* the identifier equal to id, NULL is returned
* when no connection is found
*/
struct pool_con* pool_get(struct db_id* id);
/*
* Insert a new connection into the pool
*/
void pool_insert(struct pool_con* con);
/*
* Release connection from the pool, the function
* would return 1 when if the connection is not
* referenced anymore and thus can be closed and
* deleted by the backend. The function returns
* 0 if the connection should still be kept open
* because some other module is still using it.
* The function returns -1 if the connection is
* not in the pool.
*/
int pool_remove(struct pool_con* con);
#endif /* _POOL_H */
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