X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=servers%2Fslapd%2Fback-bdb%2Fdbcache.c;h=23d964deaa3bd45446d27ffc150fdc4c4a1c3d86;hb=47c6701a2293fec249cdb84f69b37addfb4b36fc;hp=3eddc2ab1a29537deb82b9c8d4abdc8809b381c7;hpb=7dcb79157dc9fb049f57a7fbb902d9ce42f320da;p=openldap
diff --git a/servers/slapd/back-bdb/dbcache.c b/servers/slapd/back-bdb/dbcache.c
index 3eddc2ab1a..23d964deaa 100644
--- a/servers/slapd/back-bdb/dbcache.c
+++ b/servers/slapd/back-bdb/dbcache.c
@@ -1,8 +1,17 @@
/* dbcache.c - manage cache of open databases */
/* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software .
+ *
+ * Copyright 2000-2004 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * .
*/
#include "portable.h"
@@ -19,6 +28,7 @@
#include "back-bdb.h"
#include "lutil_hash.h"
+#ifdef BDB_INDEX_USE_HASH
/* Pass-thru hash function. Since the indexer is already giving us hash
* values as keys, we don't need BDB to re-hash them.
*/
@@ -42,60 +52,45 @@ bdb_db_hash(
}
return ret;
}
+#define BDB_INDEXTYPE DB_HASH
+#else
+#define BDB_INDEXTYPE DB_BTREE
+#endif
int
bdb_db_cache(
Backend *be,
- DB_TXN *tid,
const char *name,
DB **dbout )
{
int i;
int rc;
- int flags;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
struct bdb_db_info *db;
char *file;
- DBT lockobj;
- DB_LOCK lock;
- u_int32_t locker = 0;
*dbout = NULL;
- for( i=BDB_NDB; i < BDB_INDICES && bdb->bi_databases[i]; i++ ) {
+ for( i=BDB_NDB; i < bdb->bi_ndatabases; i++ ) {
if( !strcmp( bdb->bi_databases[i]->bdi_name, name) ) {
*dbout = bdb->bi_databases[i]->bdi_db;
return 0;
}
}
- lockobj.data = "bdb_db_cache";
- lockobj.size = sizeof("bdb_db_cache");
-
- if (tid) {
- locker = TXN_ID( tid );
- } else {
-#ifdef BDB_REUSE_LOCKERS
-#define op NULL /* implicit arg in LOCK_ID */
-#endif
- rc = LOCK_ID( bdb->bi_dbenv, &locker );
- if (rc) return rc;
- }
- rc = LOCK_GET( bdb->bi_dbenv, locker, 0, &lockobj,
- DB_LOCK_WRITE, &lock );
- if (rc) return rc;
+ ldap_pvt_thread_mutex_lock( &bdb->bi_database_mutex );
/* check again! may have been added by another thread */
- for( i=BDB_NDB; i < BDB_INDICES && bdb->bi_databases[i]; i++ ) {
+ for( i=BDB_NDB; i < bdb->bi_ndatabases; i++ ) {
if( !strcmp( bdb->bi_databases[i]->bdi_name, name) ) {
*dbout = bdb->bi_databases[i]->bdi_db;
- LOCK_PUT( bdb->bi_dbenv, &lock);
+ ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
return 0;
}
}
if( i >= BDB_INDICES ) {
- LOCK_PUT( bdb->bi_dbenv, &lock);
+ ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
return -1;
}
@@ -114,12 +109,14 @@ bdb_db_cache(
"bdb_db_cache: db_create(%s) failed: %s (%d)\n",
bdb->bi_dbenv_home, db_strerror(rc), rc );
#endif
- LOCK_PUT( bdb->bi_dbenv, &lock);
+ ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
return rc;
}
rc = db->bdi_db->set_pagesize( db->bdi_db, BDB_PAGESIZE );
+#ifdef BDB_INDEX_USE_HASH
rc = db->bdi_db->set_h_hash( db->bdi_db, bdb_db_hash );
+#endif
rc = db->bdi_db->set_flags( db->bdi_db, DB_DUP | DB_DUPSORT );
rc = db->bdi_db->set_dup_compare( db->bdi_db, bdb_bt_compare );
@@ -129,11 +126,9 @@ bdb_db_cache(
#ifdef HAVE_EBCDIC
__atoe( file );
#endif
- flags = bdb->bi_db_opflags | DB_CREATE | DB_THREAD;
- if ( !tid ) flags |= DB_AUTO_COMMIT;
- rc = DB_OPEN( db->bdi_db, tid,
+ rc = DB_OPEN( db->bdi_db,
file, NULL /* name */,
- DB_HASH, flags,
+ BDB_INDEXTYPE, bdb->bi_db_opflags | DB_CREATE | DB_THREAD,
bdb->bi_dbenv_mode );
ch_free( file );
@@ -148,7 +143,7 @@ bdb_db_cache(
"bdb_db_cache: db_open(%s) failed: %s (%d)\n",
name, db_strerror(rc), rc );
#endif
- LOCK_PUT( bdb->bi_dbenv, &lock);
+ ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
return rc;
}
@@ -157,6 +152,6 @@ bdb_db_cache(
*dbout = db->bdi_db;
- LOCK_PUT( bdb->bi_dbenv, &lock );
+ ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
return 0;
}