/** @file midl.h
- * @brief mdb ID List header file.
+ * @brief LMDB ID List header file.
*
* This file was originally part of back-bdb but has been
* modified for use in libmdb. Most of the macros defined
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 2000-2013 The OpenLDAP Foundation.
+ * Copyright 2000-2016 The OpenLDAP Foundation.
+ * Portions Copyright 2001-2017 Howard Chu, Symas Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#ifndef _MDB_MIDL_H_
#define _MDB_MIDL_H_
-#include <stddef.h>
+#include "lmdb.h"
#ifdef __cplusplus
extern "C" {
#endif
-/** @defgroup internal MDB Internals
+/** @defgroup internal LMDB Internals
* @{
*/
/** @defgroup idls ID List Management
* @{
*/
- /** A generic ID number. These were entryIDs in back-bdb.
+ /** A generic unsigned ID number. These were entryIDs in back-bdb.
* Preferably it should have the same size as a pointer.
*/
-typedef size_t MDB_ID;
+typedef mdb_size_t MDB_ID;
/** An IDL is an ID List, a sorted array of IDs. The first
* element of the array is a counter for how many actual
/* IDL sizes - likely should be even bigger
* limiting factors: sizeof(ID), thread stack size
*/
+#ifdef MDB_VL32
+#define MDB_IDL_LOGN 14 /* DB_SIZE is 2^14, UM_SIZE is 2^15 */
+#else
#define MDB_IDL_LOGN 16 /* DB_SIZE is 2^16, UM_SIZE is 2^17 */
+#endif
#define MDB_IDL_DB_SIZE (1<<MDB_IDL_LOGN)
#define MDB_IDL_UM_SIZE (1<<(MDB_IDL_LOGN+1))
#define MDB_IDL_FIRST( ids ) ( (ids)[1] )
#define MDB_IDL_LAST( ids ) ( (ids)[(ids)[0]] )
+ /** Current max length of an #mdb_midl_alloc()ed IDL */
+#define MDB_IDL_ALLOCLEN( ids ) ( (ids)[-1] )
+
/** Append ID to IDL. The IDL must be big enough. */
#define mdb_midl_xappend(idl, id) do { \
MDB_ID *xidl = (idl), xlen = ++(xidl[0]); \
/** Shrink an IDL.
* Return the IDL to the default size if it has grown larger.
* @param[in,out] idp Address of the IDL to shrink.
- * @return 0 on no change, non-zero if shrunk.
*/
-int mdb_midl_shrink(MDB_IDL *idp);
+void mdb_midl_shrink(MDB_IDL *idp);
/** Make room for num additional elements in an IDL.
* @param[in,out] idp Address of the IDL.
*/
int mdb_midl_append_range( MDB_IDL *idp, MDB_ID id, unsigned n );
+ /** Merge an IDL onto an IDL. The destination IDL must be big enough.
+ * @param[in] idl The IDL to merge into.
+ * @param[in] merge The IDL to merge.
+ */
+void mdb_midl_xmerge( MDB_IDL idl, MDB_IDL merge );
+
/** Sort an IDL.
* @param[in,out] ids The IDL to sort.
*/
*/
int mdb_mid2l_append( MDB_ID2L ids, MDB_ID2 *id );
+#ifdef MDB_VL32
+typedef struct MDB_ID3 {
+ MDB_ID mid; /**< The ID */
+ void *mptr; /**< The pointer */
+ unsigned int mcnt; /**< Number of pages */
+ unsigned int mref; /**< Refcounter */
+} MDB_ID3;
+
+typedef MDB_ID3 *MDB_ID3L;
+
+unsigned mdb_mid3l_search( MDB_ID3L ids, MDB_ID id );
+int mdb_mid3l_insert( MDB_ID3L ids, MDB_ID3 *id );
+
+#endif /* MDB_VL32 */
/** @} */
/** @} */
#ifdef __cplusplus