* Copyright (C) 2010 Daniel-Constantin Mierla (asipto.com)
 * This file is part of Kamailio, a free SIP server.
 * Kamailio 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
 * Kamailio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

#ifndef _DS_HT_H_
#define _DS_HT_H_

#include <time.h>

#include "../../core/str.h"
#include "../../core/locking.h"

/* clang-format off */
#define DS_LOAD_INIT		0

typedef struct _ds_cell {
    unsigned int cellid;   /* item hash id */
	str callid;            /* sip call-id */
	str duid;              /* destination unique id (duid attribute) */
	int dset;              /* destination set */
	int state;             /* state */
	time_t  expire;        /* expiration of the item */
	time_t  initexpire;    /* expiration in initial state of the item */
    struct _ds_cell *prev;
    struct _ds_cell *next;
} ds_cell_t;

typedef struct _ds_entry {
	unsigned int esize;
	ds_cell_t *first;
	gen_lock_t lock;	
} ds_entry_t;

typedef struct _ds_ht {
	unsigned int htexpire;
	unsigned int htinitexpire;
	unsigned int htsize;
	ds_entry_t *entries;
	struct _ds_ht *next;
} ds_ht_t;
/* clang-format on */

ds_ht_t *ds_ht_init(unsigned int htsize, int expire, int initexpire);
int ds_ht_destroy(ds_ht_t *dsht);
int ds_add_cell(ds_ht_t *dsht, str *cid, str *did, int dset);
int ds_del_cell(ds_ht_t *dsht, str *cid);
ds_cell_t *ds_get_cell(ds_ht_t *dsht, str *cid);
int ds_unlock_cell(ds_ht_t *dsht, str *cid);

int ds_ht_dbg(ds_ht_t *dsht);
int ds_cell_free(ds_cell_t *cell);
int ds_ht_clear_slots(ds_ht_t *dsht);