-/* 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
*/
#define _BACK_BDB_H_
#include <portable.h>
+#include "slap.h"
#include <db.h>
LDAP_BEGIN_DECL
-#define DEFAULT_MODE 0600
+/* #define BDB_HIER 1 */
-#define DEFAULT_DBENV_HOME LDAP_RUNDIR LDAP_DIRSEP "openldap-bdb"
+#define DN_BASE_PREFIX SLAP_INDEX_EQUALITY_PREFIX
+#define DN_ONE_PREFIX '%'
+#define DN_SUBTREE_PREFIX '@'
-#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"
+#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 )
-struct bdb_dbinfo {
- DB_ENV *bdi_dbenv;
+#define BDB_TXN_RETRIES 16
- /* DBenv parameters */
- char *bdi_dbenv_home;
- u_int32_t bdi_dbenv_xflags; /* extra flags */
- int bdi_dbenv_mode;
+#define BDB_MAX_ADD_LOOP 30
- char *bdi_db_tmp_dir;
- char *bdi_db_lg_dir;
- char *bdi_db_data_dir;
+#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. Smaller pages are better for concurrency.
+ */
+#ifndef BDB_ID2ENTRY_PAGESIZE
+#define BDB_ID2ENTRY_PAGESIZE 16384
+#endif
+
+#ifndef BDB_PAGESIZE
+#define BDB_PAGESIZE 4096 /* BDB's original default */
+#endif
+
+#define DEFAULT_CACHE_SIZE 1000
+
+/* for the in-core cache of entries */
+typedef struct bdb_cache {
+ int c_maxsize;
+ int c_cursize;
+ Avlnode *c_dntree;
+ Avlnode *c_idtree;
+ Entry *c_lruhead; /* lru - add accessed entries here */
+ Entry *c_lrutail; /* lru - rem lru entries from here */
+ ldap_pvt_thread_rdwr_t c_rwlock;
+ ldap_pvt_thread_mutex_t lru_mutex;
+} Cache;
+
+#define CACHE_READ_LOCK 0
+#define CACHE_WRITE_LOCK 1
+
+#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;
+ Cache bi_cache;
+ Avlnode *bi_attrs;
+#ifdef BDB_HIER
+ Avlnode *bi_tree;
+ ldap_pvt_thread_rdwr_t bi_tree_rdwr;
+ void *bi_troot;
+#endif
+
+ int bi_txn_cp;
+ u_int32_t bi_txn_cp_min;
+ u_int32_t bi_txn_cp_kbyte;
+
+ int bi_lock_detect;
+
+ ID bi_lastid;
+ ldap_pvt_thread_mutex_t bi_lastid_mutex;
+#ifdef LDAP_CLIENT_UPDATE
+ LDAP_LIST_HEAD(pl, slap_op) psearch_list;
+#endif
+};
+
+#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 DB_OPEN(db, file, name, type, flags, mode) \
+ (db)->open(db, file, name, type, flags, mode)
+
+#if DB_VERSION_MAJOR < 4
+#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)
+#define LOCK_PUT(env,l) lock_put(env, l)
+#define TXN_CHECKPOINT(env,k,m,f) txn_checkpoint(env, k, m, f)
+#define TXN_BEGIN(env,p,t,f) txn_begin((env), p, t, f)
+#define TXN_PREPARE(txn,gid) txn_prepare((txn), (gid))
+#define TXN_COMMIT(txn,f) txn_commit((txn), (f))
+#define TXN_ABORT(txn) txn_abort((txn))
+#define TXN_ID(txn) txn_id(txn)
+#define XLOCK_ID(env, locker) lock_id(env, locker)
+#define XLOCK_ID_FREE(env, locker) lock_id_free(env, locker)
+#else
+#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)
+#define LOCK_PUT(env,l) (env)->lock_put(env, l)
+#define TXN_CHECKPOINT(env,k,m,f) (env)->txn_checkpoint(env, k, m, f)
+#define TXN_BEGIN(env,p,t,f) (env)->txn_begin((env), p, t, f)
+#define TXN_PREPARE(txn,g) (txn)->prepare((txn), (g))
+#define TXN_COMMIT(txn,f) (txn)->commit((txn), (f))
+#define TXN_ABORT(txn) (txn)->abort((txn))
+#define TXN_ID(txn) (txn)->id(txn)
+#define XLOCK_ID(env, locker) (env)->lock_id(env, locker)
+#define XLOCK_ID_FREE(env, locker) (env)->lock_id_free(env, locker)
+
+/* BDB 4.1.17 adds txn arg to db->open */
+#if DB_VERSION_MINOR > 1 || DB_VERSION_PATCH >= 17
+#undef DB_OPEN
+#define DB_OPEN(db, file, name, type, flags, mode) \
+ (db)->open(db, NULL, file, name, type, (flags)|DB_AUTO_COMMIT, mode)
+#endif
+
+#define BDB_REUSE_LOCKERS
+
+#ifdef BDB_REUSE_LOCKERS
+#define LOCK_ID_FREE(env, locker)
+#define LOCK_ID(env, locker) bdb_locker_id(op, env, locker)
+#else
+#define LOCK_ID_FREE(env, locker) XLOCK_ID_FREE(env, locker)
+#define LOCK_ID(env, locker) XLOCK_ID(env, locker)
+#endif
+
+#endif
+
LDAP_END_DECL
#include "proto-bdb.h"
projects / openldap / blobdiff