-/* 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_IDL_DB_SIZE (1<<16) /* 64K IDL on disk */
-#define BDB_IDL_DB_MAX (BDB_IDL_DB_SIZE-32)
-/* #define BDB_IDL_DB_ALLOC (BDB_IDL_DB_SIZE * sizeof(ID)) */
-
-#define BDB_IDL_SIZE (1<<17) /* 128K IDL in memory */
-#define BDB_IDL_MAX (BDB_IDL_DB_SIZE-32)
-/* #define BDB_IDL_DB_ALLOC (BDB_IDL_DB_SIZE * sizeof(ID)) */
-
-#define BDB_IDL_RANGE_SIZE (3 * sizeof(ID))
-#define BDB_IDL_IS_RANGE(ids) ((ids)[0] == NOID)
+#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 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"
#endif
#define BDB_SUFFIX ".bdb"
-#define BDB_NEXTID 0
+#define BDB_ID2ENTRY 0
+#ifdef BDB_HIER
+#define BDB_ID2PARENT 1
+#else
#define BDB_DN2ID 1
-#define BDB_ID2ENTRY 2
-#define BDB_INDICES 3
+#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;
};
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;
+#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_nextid bi_databases[BDB_NEXTID]
+
#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;
int boi_err;
};
+#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
#include "proto-bdb.h"