-/* back-bdb.h - ldap ldbm back-end header file */
+/* back-bdb.h - bdb back-end header file */
/* $OpenLDAP$ */
/*
- * Copyright 2000 The OpenLDAP Foundation, All Rights Reserved.
+ * Copyright 2000-2002 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
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 DEFAULT_MODE 0600
-#define DEFAULT_DBENV_HOME LDAP_RUNDIR LDAP_DIRSEP "openldap-bdb"
+#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
-#define DEFAULT_DB_TMP_DIR DEFAULT_DBENV_HOME LDAP_DIRSEP "tmp"
-#define DEFAULT_DB_LG_DIR DEFAULT_DBENV_HOME LDAP_DIRSEP "log"
-#define DEFAULT_DB_DATA_DIR DEFAULT_DBENV_HOME LDAP_DIRSEP "data"
+#ifndef BDB_PAGESIZE
+#ifdef BDB_IDL_MULTI
+#define BDB_PAGESIZE 4096 /* BDB's original default */
+#else
+#define BDB_PAGESIZE 16384
+#endif
+#endif
-#define BDB_NEXTID 0
-#define BDB_ENTRIES 1
-#define BDB_DN2ID 2
+#define BDB_INDICES 128
struct bdb_db_info {
+ char *bdi_name;
DB *bdi_db;
};
struct bdb_info {
DB_ENV *bi_dbenv;
- /* DB_env parameters */
+ /* 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_tx_max;
-
- char *bi_db_tmp_dir;
- char *bi_db_lg_dir;
- char *bi_db_data_dir;
-
- ID *bi_lastid;
-
int bi_ndatabases;
- struct bdb_db_info **bdi_databases;
+ 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;
+#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;
};
-#define bi_nextid bdi_databases[BDB_NEXTID]
-#define bi_entries bdi_databases[BDB_ENTRIES]
-#define bi_dn2id bdi_databases[BDB_DN2ID]
+
+#if DB_VERSION_MAJOR < 4
+#define TXN_CHECKPOINT(env, k, m, f) txn_checkpoint(env, k, m, f)
+#define TXN_ID(txn) txn_id(txn)
+#define LOCK_DETECT(env, f, t, a) lock_detect(env, f, t, a)
+#define LOCK_GET(env, i, f, o, m, l) lock_get(env, i, f, o, m, l)
+#else
+#define TXN_CHECKPOINT(env, k, m, f) (env)->txn_checkpoint(env, k, m, f)
+#define TXN_ID(txn) (txn)->id(txn)
+#define LOCK_DETECT(env, f, t, a) (env)->lock_detect(env, f, t, a)
+#define LOCK_GET(env, i, f, o, m, l) (env)->lock_get(env, i, f, o, m, l)
+#endif
LDAP_END_DECL