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/* Copyright (C) 2019 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program 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 3 of the License, or
(at your option) any later version.
This program 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, see <https://www.gnu.org/licenses/>.
*/
/*!
* \file
*
* \addtogroup db
* @{
*/
#pragma once
#include "libknot/db/db.h"
/* Defines. */
#define KNOT_DB_LMDB_MAPSIZE (100 * 1024 * 1024)
/* LMDB specific flags. */
extern const unsigned KNOT_DB_LMDB_NOTLS;
extern const unsigned KNOT_DB_LMDB_RDONLY;
extern const unsigned KNOT_DB_LMDB_INTEGERKEY;
extern const unsigned KNOT_DB_LMDB_NOSYNC;
extern const unsigned KNOT_DB_LMDB_WRITEMAP;
extern const unsigned KNOT_DB_LMDB_MAPASYNC;
extern const unsigned KNOT_DB_LMDB_DUPSORT;
/* Native options. */
struct knot_db_lmdb_opts {
const char *path; /*!< Database environment path. */
const char *dbname; /*!< Database name (or NULL). */
size_t mapsize; /*!< Environment map size. */
unsigned maxdbs; /*!< Maximum number of databases in the env. */
unsigned maxreaders; /*!< Maximum number of concurrent readers */
struct {
unsigned env; /*!< Environment flags. */
unsigned db; /*!< Database flags. */
} flags;
};
/* Default options. */
#define KNOT_DB_LMDB_OPTS_INITIALIZER { \
NULL, NULL, \
KNOT_DB_LMDB_MAPSIZE, \
0, \
126, /* = contrib/lmdb/mdb.c DEFAULT_READERS */ \
{ 0, 0 } \
}
const knot_db_api_t *knot_db_lmdb_api(void);
/* LMDB specific operations. */
int knot_db_lmdb_del_exact(knot_db_txn_t *txn, knot_db_val_t *key, knot_db_val_t *val);
int knot_db_lmdb_txn_begin(knot_db_t *db, knot_db_txn_t *txn, knot_db_txn_t *parent,
unsigned flags);
int knot_db_lmdb_iter_del(knot_db_iter_t *iter);
size_t knot_db_lmdb_get_mapsize(knot_db_t *db);
size_t knot_db_lmdb_get_usage(knot_db_t *db);
const char *knot_db_lmdb_get_path(knot_db_t *db);
/*! @} */
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