btr0types.h File Reference

The index tree general types. More...

#include "univ.i"
#include "page0size.h"
#include "page0types.h"
#include "rem0types.h"
#include "sync0rw.h"

Go to the source code of this file.

Macros
#define	BTR_EXTERN_FIELD_REF_SIZE   FIELD_REF_SIZE
	The size of a reference to data stored on a different page. More...
#define	BTR_EXTERN_LOCAL_STORED_MAX_SIZE   (BTR_EXTERN_FIELD_REF_SIZE * 2)
	If the data don't exceed the size, the data are stored locally. More...

Variables
bool	btr_search_enabled
	Is search system enabled. More...
ulong	btr_ahi_parts
	Number of adaptive hash index partition. More...

Detailed Description

The index tree general types.

Created 2/17/1996 Heikki Tuuri

Macro Definition Documentation

BTR_EXTERN_FIELD_REF_SIZE

#define BTR_EXTERN_FIELD_REF_SIZE   FIELD_REF_SIZE

The size of a reference to data stored on a different page.

The reference is stored at the end of the prefix of the field in the index record.

BTR_EXTERN_LOCAL_STORED_MAX_SIZE

#define BTR_EXTERN_LOCAL_STORED_MAX_SIZE   (BTR_EXTERN_FIELD_REF_SIZE * 2)

If the data don't exceed the size, the data are stored locally.

Variable Documentation

btr_ahi_parts

ulong btr_ahi_parts

Number of adaptive hash index partition.

btr_search_enabled

bool btr_search_enabled

Is search system enabled.

Search system is protected by array of latches.