openldap/servers/slapd/back-bdb/back-bdb.h

151 lines
3.3 KiB
C

/* back-bdb.h - bdb back-end header file */
/* $OpenLDAP$ */
/*
* Copyright 2000-2001 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#ifndef _BACK_BDB_H_
#define _BACK_BDB_H_
#include <portable.h>
#include <db.h>
#include "slap.h"
LDAP_BEGIN_DECL
#define BDB_FILTER_INDICES 1
/* #define BDB_IDL_MULTI 1 */
/* #define BDB_HIER 1 */
#define DN_BASE_PREFIX SLAP_INDEX_EQUALITY_PREFIX
#define DN_ONE_PREFIX '%'
#define DN_SUBTREE_PREFIX '@'
#define DBTzero(t) (memset((t), 0, sizeof(DBT)))
#define DBT2bv(t,bv) ((bv)->bv_val = (t)->data, \
(bv)->bv_len = (t)->size)
#define bv2DBT(bv,t) ((t)->data = (bv)->bv_val, \
(t)->size = (bv)->bv_len )
#define DEFAULT_MODE 0600
#define BDB_TXN_RETRIES 16
#ifdef BDB_HIER
#define BDB_DBENV_HOME LDAP_RUNDIR LDAP_DIRSEP "openldap-hdb"
#else
#define BDB_DBENV_HOME LDAP_RUNDIR LDAP_DIRSEP "openldap-bdb"
#endif
#ifdef BDB_SUBDIRS
#define BDB_TMP_SUBDIR LDAP_DIRSEP "tmp"
#define BDB_LG_SUBDIR LDAP_DIRSEP "log"
#define BDB_DATA_SUBDIR LDAP_DIRSEP "data"
#endif
#define BDB_SUFFIX ".bdb"
#define BDB_ID2ENTRY 0
#ifdef BDB_HIER
#define BDB_ID2PARENT 1
#else
#define BDB_DN2ID 1
#endif
#define BDB_NDB 2
/* The bdb on-disk entry format is pretty space-inefficient. Average
* sized user entries are 3-4K each. You need at least two entries to
* fit into a single database page, more is better. 64K is BDB's
* upper bound. The same issues arise with IDLs in the index databases,
* but it's nearly impossible to avoid overflows there.
*
* When using BDB_IDL_MULTI, the IDL size is no longer an issue. Smaller
* pages are better for concurrency.
*/
#ifndef BDB_ID2ENTRY_PAGESIZE
#define BDB_ID2ENTRY_PAGESIZE 16384
#endif
#ifndef BDB_PAGESIZE
#ifdef BDB_IDL_MULTI
#define BDB_PAGESIZE 4096 /* BDB's original default */
#else
#define BDB_PAGESIZE 16384
#endif
#endif
#define BDB_INDICES 128
struct bdb_db_info {
char *bdi_name;
DB *bdi_db;
};
struct bdb_info {
DB_ENV *bi_dbenv;
/* DB_ENV parameters */
/* The DB_ENV can be tuned via DB_CONFIG */
char *bi_dbenv_home;
u_int32_t bi_dbenv_xflags; /* extra flags */
int bi_dbenv_mode;
int bi_ndatabases;
struct bdb_db_info **bi_databases;
ldap_pvt_thread_mutex_t bi_database_mutex;
int bi_db_opflags; /* db-specific flags */
slap_mask_t bi_defaultmask;
Avlnode *bi_attrs;
#ifdef BDB_HIER
Avlnode *bi_tree;
ldap_pvt_thread_rdwr_t bi_tree_rdwr;
void *bi_troot;
int bi_nrdns;
int bi_sufflen;
int bi_nsufflen;
#endif
int bi_txn;
int bi_txn_cp;
u_int32_t bi_txn_cp_min;
u_int32_t bi_txn_cp_kbyte;
#ifndef NO_THREADS
int bi_lock_detect;
int bi_lock_detect_seconds;
ldap_pvt_thread_t bi_lock_detect_tid;
#endif
ID bi_lastid;
ldap_pvt_thread_mutex_t bi_lastid_mutex;
};
#define bi_id2entry bi_databases[BDB_ID2ENTRY]
#ifdef BDB_HIER
#define bi_id2parent bi_databases[BDB_ID2PARENT]
#else
#define bi_dn2id bi_databases[BDB_DN2ID]
#endif
struct bdb_op_info {
BackendDB* boi_bdb;
DB_TXN* boi_txn;
int boi_err;
};
#if DB_VERSION_MAJOR < 4
#define TXN_CHECKPOINT(env, k, m, f) txn_checkpoint(env, k, m, f)
#define LOCK_DETECT(env, f, t, a) lock_detect(env, f, t, a)
#else
#define TXN_CHECKPOINT(env, k, m, f) (env)->txn_checkpoint(env, k, m, f)
#define LOCK_DETECT(env, f, t, a) (env)->lock_detect(env, f, t, a)
#endif
LDAP_END_DECL
#include "proto-bdb.h"
#endif /* _BACK_BDB_H_ */