summaryrefslogtreecommitdiffstats
path: root/servers/slapd/back-bdb/idl.h
diff options
context:
space:
mode:
Diffstat (limited to 'servers/slapd/back-bdb/idl.h')
-rw-r--r--servers/slapd/back-bdb/idl.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/servers/slapd/back-bdb/idl.h b/servers/slapd/back-bdb/idl.h
new file mode 100644
index 0000000..1909054
--- /dev/null
+++ b/servers/slapd/back-bdb/idl.h
@@ -0,0 +1,75 @@
+/* idl.h - ldap bdb back-end ID list header file */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2021 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
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#ifndef _BDB_IDL_H_
+#define _BDB_IDL_H_
+
+/* IDL sizes - likely should be even bigger
+ * limiting factors: sizeof(ID), thread stack size
+ */
+#define BDB_IDL_LOGN 16 /* DB_SIZE is 2^16, UM_SIZE is 2^17 */
+#define BDB_IDL_DB_SIZE (1<<BDB_IDL_LOGN)
+#define BDB_IDL_UM_SIZE (1<<(BDB_IDL_LOGN+1))
+#define BDB_IDL_UM_SIZEOF (BDB_IDL_UM_SIZE * sizeof(ID))
+
+#define BDB_IDL_DB_MAX (BDB_IDL_DB_SIZE-1)
+
+#define BDB_IDL_UM_MAX (BDB_IDL_UM_SIZE-1)
+
+#define BDB_IDL_IS_RANGE(ids) ((ids)[0] == NOID)
+#define BDB_IDL_RANGE_SIZE (3)
+#define BDB_IDL_RANGE_SIZEOF (BDB_IDL_RANGE_SIZE * sizeof(ID))
+#define BDB_IDL_SIZEOF(ids) ((BDB_IDL_IS_RANGE(ids) \
+ ? BDB_IDL_RANGE_SIZE : ((ids)[0]+1)) * sizeof(ID))
+
+#define BDB_IDL_RANGE_FIRST(ids) ((ids)[1])
+#define BDB_IDL_RANGE_LAST(ids) ((ids)[2])
+
+#define BDB_IDL_RANGE( ids, f, l ) \
+ do { \
+ (ids)[0] = NOID; \
+ (ids)[1] = (f); \
+ (ids)[2] = (l); \
+ } while(0)
+
+#define BDB_IDL_ZERO(ids) \
+ do { \
+ (ids)[0] = 0; \
+ (ids)[1] = 0; \
+ (ids)[2] = 0; \
+ } while(0)
+
+#define BDB_IDL_IS_ZERO(ids) ( (ids)[0] == 0 )
+#define BDB_IDL_IS_ALL( range, ids ) ( (ids)[0] == NOID \
+ && (ids)[1] <= (range)[1] && (range)[2] <= (ids)[2] )
+
+#define BDB_IDL_CPY( dst, src ) (AC_MEMCPY( dst, src, BDB_IDL_SIZEOF( src ) ))
+
+#define BDB_IDL_ID( bdb, ids, id ) BDB_IDL_RANGE( ids, id, ((bdb)->bi_lastid) )
+#define BDB_IDL_ALL( bdb, ids ) BDB_IDL_RANGE( ids, 1, ((bdb)->bi_lastid) )
+
+#define BDB_IDL_FIRST( ids ) ( (ids)[1] )
+#define BDB_IDL_LLAST( ids ) ( (ids)[(ids)[0]] )
+#define BDB_IDL_LAST( ids ) ( BDB_IDL_IS_RANGE(ids) \
+ ? (ids)[2] : (ids)[(ids)[0]] )
+
+#define BDB_IDL_N( ids ) ( BDB_IDL_IS_RANGE(ids) \
+ ? ((ids)[2]-(ids)[1])+1 : (ids)[0] )
+
+LDAP_BEGIN_DECL
+LDAP_END_DECL
+
+#endif