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162 lines
3.9 KiB
162 lines
3.9 KiB
/*
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* $Id$
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*
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* Usrloc domain structure
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*
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* Copyright (C) 2001-2003 FhG Fokus
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*
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* This file is part of ser, a free SIP server.
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*
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* ser is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* For a license to use the ser software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* ser is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* History:
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* --------
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* 2003-03-11 changed to new locking scheme: locking.h (andrei)
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* 2006-11-23 switched to fixed hash size (andrei)
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*/
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#ifndef UDOMAIN_H
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#define UDOMAIN_H
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#include <stdio.h>
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#include "../../locking.h"
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#include "../../str.h"
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#include "../../lib/srdb2/db.h"
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#include "urecord.h"
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#include "hslot.h"
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/* udomain hash size, for best performance always use a 2^k value
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* good values 8192: 9% increase over 4096, 16384: 5% inc. over 8192,
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* 32768 4-5% inc over 16384 */
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#define UDOMAIN_HASH_SIZE 16384
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struct hslot; /* Hash table slot */
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struct urecord; /* Usrloc record */
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/*
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* The structure represents a usrloc domain
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*/
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typedef struct udomain {
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str* name; /* Domain name */
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int users; /* Number of registered users */
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int expired; /* Number of expired contacts */
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int db_cmd_idx; /* Index into db_cmd arrays */
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struct hslot* table; /* Hash table - array of collision slots */
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struct { /* Linked list of all elements in the domain */
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int n; /* Number of element in the linked list */
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struct urecord* first; /* First element in the list */
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struct urecord* last; /* Last element in the list */
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} d_ll;
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gen_lock_t lock; /* lock variable */
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} udomain_t;
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/*
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* Create a new domain structure
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* _n is pointer to str representing
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* name of the domain, the string is
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* not copied, it should point to str
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* structure stored in domain list
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*/
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int new_udomain(str* _n, udomain_t** _d);
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/*
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* Free all memory allocated for
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* the domain
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*/
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void free_udomain(udomain_t* _d);
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/*
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* Just for debugging
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*/
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void print_udomain(FILE* _f, udomain_t* _d);
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/*
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* Load data from a database
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*/
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int preload_udomain(udomain_t* _d);
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/*
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* Timer handler for given domain
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*/
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int timer_udomain(udomain_t* _d);
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/*
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* Insert record into domain
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*/
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int mem_insert_urecord(udomain_t* _d, str* _uid, struct urecord** _r);
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/*
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* Delete a record
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*/
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void mem_delete_urecord(udomain_t* _d, struct urecord* _r);
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/*
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* Get lock
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*/
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typedef void (*lock_udomain_t)(udomain_t* _d);
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void lock_udomain(udomain_t* _d);
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/*
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* Release lock
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*/
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typedef void (*unlock_udomain_t)(udomain_t* _d);
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void unlock_udomain(udomain_t* _d);
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/* ===== module interface ======= */
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/*
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* Create and insert a new record
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*/
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typedef int (*insert_urecord_t)(udomain_t* _d, str* _uid, struct urecord** _r);
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int insert_urecord(udomain_t* _d, str* _uid, struct urecord** _r);
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/*
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* Obtain a urecord pointer if the urecord exists in domain
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*/
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typedef int (*get_urecord_t)(udomain_t* _d, str* _uid, struct urecord** _r);
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int get_urecord(udomain_t* _d, str* _uid, struct urecord** _r);
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/*
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* Delete a urecord from domain
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*/
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typedef int (*delete_urecord_t)(udomain_t* _d, str* _uid);
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int delete_urecord(udomain_t* _d, str* _uid);
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#endif /* UDOMAIN_H */
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