/* back-ldbm.h - ldap ldbm back-end header file */
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
#ifndef _BACK_LDBM_H_
#define _BACK_LDBM_H_
#define DEFAULT_CACHE_SIZE 1000
-#ifdef HAVE_BERKELEY_DB2
+#if defined(HAVE_BERKELEY_DB) && DB_VERSION_MAJOR >= 2
# define DEFAULT_DBCACHE_SIZE (100 * DEFAULT_DB_PAGE_SIZE)
#else
# define DEFAULT_DBCACHE_SIZE 100000
#endif
-#define DEFAULT_DB_DIRECTORY "/usr/tmp"
-#define DEFAULT_MODE 0600
-
-#define SUBLEN 3
+#define DN_BASE_PREFIX SLAP_INDEX_EQUALITY_PREFIX
+#define DN_ONE_PREFIX '%'
+#define DN_SUBTREE_PREFIX '@'
/*
- * there is a single index for each attribute. these prefixes insure
+ * there is a single index for each attribute. these prefixes ensure
* that there is no collision among keys.
*/
-#define EQ_PREFIX '=' /* prefix for equality keys */
-#define APPROX_PREFIX '~' /* prefix for approx keys */
-#define SUB_PREFIX '*' /* prefix for substring keys */
-#define CONT_PREFIX '\\' /* prefix for continuation keys */
-#define UNKNOWN_PREFIX '?' /* prefix for unknown keys */
+/* allow PREFIX + byte for continuate number */
+#define SLAP_INDEX_CONT_SIZE ( sizeof(SLAP_INDEX_CONT_PREFIX) + sizeof(unsigned char) )
#define DEFAULT_BLOCKSIZE 8192
/* all ID_BLOCK macros operate on a pointer to a ID_BLOCK */
#define ID_BLOCK_NMAX(b) ((b)[ID_BLOCK_NMAX_OFFSET])
+
+/* Use this macro to get the value, but not to set it.
+ * By default this is identical to above.
+ */
+#define ID_BLOCK_NMAXN(b) ID_BLOCK_NMAX(b)
#define ID_BLOCK_NIDS(b) ((b)[ID_BLOCK_NIDS_OFFSET])
#define ID_BLOCK_ID(b, n) ((b)[ID_BLOCK_IDS_OFFSET+(n)])
#define ID_BLOCK_INDIRECT_VALUE 0
#define ID_BLOCK_INDIRECT(b) (ID_BLOCK_NIDS(b) == ID_BLOCK_INDIRECT_VALUE)
+#define USE_INDIRECT_NIDS 1
+
+#ifdef USE_INDIRECT_NIDS
+/*
+ * Use the high bit of ID_BLOCK_NMAX to indicate an INDIRECT block, thus
+ * freeing up the ID_BLOCK_NIDS to store an actual count. This allows us
+ * to use binary search on INDIRECT blocks.
+ */
+#undef ID_BLOCK_NMAXN
+#define ID_BLOCK_NMAXN(b) ((b)[ID_BLOCK_NMAX_OFFSET]&0x7fffffff)
+#undef ID_BLOCK_INDIRECT_VALUE
+#define ID_BLOCK_INDIRECT_VALUE 0x80000000
+#undef ID_BLOCK_INDIRECT
+#define ID_BLOCK_INDIRECT(b) (ID_BLOCK_NMAX(b) & ID_BLOCK_INDIRECT_VALUE)
+
+#endif /* USE_INDIRECT_NIDS */
+
/* for the in-core cache of entries */
-struct cache {
+typedef struct ldbm_cache {
int c_maxsize;
int c_cursize;
Avlnode *c_dntree;
Entry *c_lruhead; /* lru - add accessed entries here */
Entry *c_lrutail; /* lru - rem lru entries from here */
ldap_pvt_thread_mutex_t c_mutex;
-};
+} Cache;
+
+#define CACHE_READ_LOCK 0
+#define CACHE_WRITE_LOCK 1
/* for the cache of open index files */
-struct dbcache {
+typedef struct ldbm_dbcache {
int dbc_refcnt;
int dbc_maxids;
int dbc_maxindirect;
+ int dbc_dirty;
+ int dbc_flags;
time_t dbc_lastref;
long dbc_blksize;
char *dbc_name;
LDBM dbc_db;
+ ldap_pvt_thread_mutex_t dbc_write_mutex;
+} DBCache;
-#ifdef HAVE_BERKELEY_DB2
- struct dbcache *dbc_next;
-#endif
-};
-
-/* for the cache of attribute information (which are indexed, etc.) */
-struct attrinfo {
- char *ai_type; /* type name (cn, sn, ...) */
- int ai_indexmask; /* how the attr is indexed */
-#define INDEX_PRESENCE 0x01
-#define INDEX_EQUALITY 0x02
-#define INDEX_APPROX 0x04
-#define INDEX_SUB 0x08
-#define INDEX_UNKNOWN 0x10
-#define INDEX_FROMINIT 0x20
- int ai_syntaxmask; /* what kind of syntax */
-/* ...from slap.h...
-#define SYNTAX_CIS 0x01
-#define SYNTAX_CES 0x02
-#define SYNTAX_BIN 0x04
- ... etc. ...
-*/
-};
-
-#define MAXDBCACHE 10
-
-/* this could be made an option */
-#ifndef SLAPD_NEXTID_CHUNK
-#define SLAPD_NEXTID_CHUNK 32
-#endif
+#define MAXDBCACHE 128
struct ldbminfo {
+ ldap_pvt_thread_rdwr_t li_giant_rwlock;
ID li_nextid;
-#if SLAPD_NEXTID_CHUNK > 1
- ID li_nextid_wrote;
-#endif
- char *li_nextid_file;
- ldap_pvt_thread_mutex_t li_root_mutex;
- ldap_pvt_thread_mutex_t li_add_mutex;
- ldap_pvt_thread_mutex_t li_nextid_mutex;
int li_mode;
+ slap_mask_t li_defaultmask;
char *li_directory;
- struct cache li_cache;
+ Cache li_cache;
Avlnode *li_attrs;
+ int li_dblocking; /* lock databases */
+ int li_dbwritesync; /* write sync */
int li_dbcachesize;
- int li_dbcachewsync;
- struct dbcache li_dbcache[MAXDBCACHE];
+ DBCache li_dbcache[MAXDBCACHE];
ldap_pvt_thread_mutex_t li_dbcache_mutex;
ldap_pvt_thread_cond_t li_dbcache_cv;
-
-#ifdef HAVE_BERKELEY_DB2
- /* Berkeley DB2 Environment */
- DB_ENV li_db_env;
-#endif
+ DB_ENV *li_dbenv;
+ int li_envdirok;
+ int li_dbsyncfreq;
+ int li_dbsyncwaitn;
+ int li_dbsyncwaitinterval;
+ ldap_pvt_thread_t li_dbsynctid;
+ int li_dbshutdown;
};
-#include "proto-back-ldbm.h"
-
LDAP_END_DECL
+#include "proto-back-ldbm.h"
+
#endif /* _back_ldbm_h_ */
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