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/* 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
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