#include "univ.i"
#include "mtr0mtr.h"
#include "mtr0log.h"
#include "ut0byte.h"
#include "buf0buf.h"
#include "fsp0fsp.h"
#include "dict0dict.h"
#include "dict0boot.ic"

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Go to the source code of this file.

Macros
#define	DICT_HDR_SPACE 0 /* the SYSTEM tablespace */
#define	DICT_HDR_PAGE_NO FSP_DICT_HDR_PAGE_NO
#define	DICT_TABLES_ID 1
#define	DICT_COLUMNS_ID 2
#define	DICT_INDEXES_ID 3
#define	DICT_FIELDS_ID 4
#define	DICT_TABLE_IDS_ID 5
#define	DICT_HDR_FIRST_ID
#define	DICT_HDR FSEG_PAGE_DATA
#define	DICT_HDR_ROW_ID 0 /* The latest assigned row id */
#define	DICT_HDR_TABLE_ID 8 /* The latest assigned table id */
#define	DICT_HDR_INDEX_ID 16 /* The latest assigned index id */
#define	DICT_HDR_MAX_SPACE_ID 24 /* The latest assigned space id,or 0*/
#define	DICT_HDR_MIX_ID_LOW 28 /* Obsolete,always DICT_HDR_FIRST_ID*/
#define	DICT_HDR_TABLES 32 /* Root of SYS_TABLES clust index */
#define	DICT_HDR_TABLE_IDS 36 /* Root of SYS_TABLE_IDS sec index */
#define	DICT_HDR_COLUMNS 40 /* Root of SYS_COLUMNS clust index */
#define	DICT_HDR_INDEXES 44 /* Root of SYS_INDEXES clust index */
#define	DICT_HDR_FIELDS 48 /* Root of SYS_FIELDS clust index */
#define	DICT_HDR_FSEG_HEADER
#define	DICT_FLD_LEN_SPACE 4
#define	DICT_FLD_LEN_FLAGS 4
#define	DICT_HDR_ROW_ID_WRITE_MARGIN 256

Typedefs
typedef byte	dict_hdr_t

Enumerations
enum	dict_col_sys_tables_enum { DICT_COL__SYS_TABLES__NAME = 0, DICT_COL__SYS_TABLES__ID = 1, DICT_COL__SYS_TABLES__N_COLS = 2, DICT_COL__SYS_TABLES__TYPE = 3, DICT_COL__SYS_TABLES__MIX_ID = 4, DICT_COL__SYS_TABLES__MIX_LEN = 5, DICT_COL__SYS_TABLES__CLUSTER_ID = 6, DICT_COL__SYS_TABLES__SPACE = 7, DICT_NUM_COLS__SYS_TABLES = 8 }
enum	dict_fld_sys_tables_enum { DICT_FLD__SYS_TABLES__NAME = 0, DICT_FLD__SYS_TABLES__DB_TRX_ID = 1, DICT_FLD__SYS_TABLES__DB_ROLL_PTR = 2, DICT_FLD__SYS_TABLES__ID = 3, DICT_FLD__SYS_TABLES__N_COLS = 4, DICT_FLD__SYS_TABLES__TYPE = 5, DICT_FLD__SYS_TABLES__MIX_ID = 6, DICT_FLD__SYS_TABLES__MIX_LEN = 7, DICT_FLD__SYS_TABLES__CLUSTER_ID = 8, DICT_FLD__SYS_TABLES__SPACE = 9, DICT_NUM_FIELDS__SYS_TABLES = 10 }
enum	dict_fld_sys_table_ids_enum { DICT_FLD__SYS_TABLE_IDS__ID = 0, DICT_FLD__SYS_TABLE_IDS__NAME = 1, DICT_NUM_FIELDS__SYS_TABLE_IDS = 2 }
enum	dict_col_sys_columns_enum { DICT_COL__SYS_COLUMNS__TABLE_ID = 0, DICT_COL__SYS_COLUMNS__POS = 1, DICT_COL__SYS_COLUMNS__NAME = 2, DICT_COL__SYS_COLUMNS__MTYPE = 3, DICT_COL__SYS_COLUMNS__PRTYPE = 4, DICT_COL__SYS_COLUMNS__LEN = 5, DICT_COL__SYS_COLUMNS__PREC = 6, DICT_NUM_COLS__SYS_COLUMNS = 7 }
enum	dict_fld_sys_columns_enum { DICT_FLD__SYS_COLUMNS__TABLE_ID = 0, DICT_FLD__SYS_COLUMNS__POS = 1, DICT_FLD__SYS_COLUMNS__DB_TRX_ID = 2, DICT_FLD__SYS_COLUMNS__DB_ROLL_PTR = 3, DICT_FLD__SYS_COLUMNS__NAME = 4, DICT_FLD__SYS_COLUMNS__MTYPE = 5, DICT_FLD__SYS_COLUMNS__PRTYPE = 6, DICT_FLD__SYS_COLUMNS__LEN = 7, DICT_FLD__SYS_COLUMNS__PREC = 8, DICT_NUM_FIELDS__SYS_COLUMNS = 9 }
enum	dict_col_sys_indexes_enum { DICT_COL__SYS_INDEXES__TABLE_ID = 0, DICT_COL__SYS_INDEXES__ID = 1, DICT_COL__SYS_INDEXES__NAME = 2, DICT_COL__SYS_INDEXES__N_FIELDS = 3, DICT_COL__SYS_INDEXES__TYPE = 4, DICT_COL__SYS_INDEXES__SPACE = 5, DICT_COL__SYS_INDEXES__PAGE_NO = 6, DICT_NUM_COLS__SYS_INDEXES = 7 }
enum	dict_fld_sys_indexes_enum { DICT_FLD__SYS_INDEXES__TABLE_ID = 0, DICT_FLD__SYS_INDEXES__ID = 1, DICT_FLD__SYS_INDEXES__DB_TRX_ID = 2, DICT_FLD__SYS_INDEXES__DB_ROLL_PTR = 3, DICT_FLD__SYS_INDEXES__NAME = 4, DICT_FLD__SYS_INDEXES__N_FIELDS = 5, DICT_FLD__SYS_INDEXES__TYPE = 6, DICT_FLD__SYS_INDEXES__SPACE = 7, DICT_FLD__SYS_INDEXES__PAGE_NO = 8, DICT_NUM_FIELDS__SYS_INDEXES = 9 }
enum	dict_col_sys_fields_enum { DICT_COL__SYS_FIELDS__INDEX_ID = 0, DICT_COL__SYS_FIELDS__POS = 1, DICT_COL__SYS_FIELDS__COL_NAME = 2, DICT_NUM_COLS__SYS_FIELDS = 3 }
enum	dict_fld_sys_fields_enum { DICT_FLD__SYS_FIELDS__INDEX_ID = 0, DICT_FLD__SYS_FIELDS__POS = 1, DICT_FLD__SYS_FIELDS__DB_TRX_ID = 2, DICT_FLD__SYS_FIELDS__DB_ROLL_PTR = 3, DICT_FLD__SYS_FIELDS__COL_NAME = 4, DICT_NUM_FIELDS__SYS_FIELDS = 5 }
enum	dict_col_sys_foreign_enum { DICT_COL__SYS_FOREIGN__ID = 0, DICT_COL__SYS_FOREIGN__FOR_NAME = 1, DICT_COL__SYS_FOREIGN__REF_NAME = 2, DICT_COL__SYS_FOREIGN__N_COLS = 3, DICT_NUM_COLS__SYS_FOREIGN = 4 }
enum	dict_fld_sys_foreign_enum { DICT_FLD__SYS_FOREIGN__ID = 0, DICT_FLD__SYS_FOREIGN__DB_TRX_ID = 1, DICT_FLD__SYS_FOREIGN__DB_ROLL_PTR = 2, DICT_FLD__SYS_FOREIGN__FOR_NAME = 3, DICT_FLD__SYS_FOREIGN__REF_NAME = 4, DICT_FLD__SYS_FOREIGN__N_COLS = 5, DICT_NUM_FIELDS__SYS_FOREIGN = 6 }
enum	dict_fld_sys_foreign_for_name_enum { DICT_FLD__SYS_FOREIGN_FOR_NAME__NAME = 0, DICT_FLD__SYS_FOREIGN_FOR_NAME__ID = 1, DICT_NUM_FIELDS__SYS_FOREIGN_FOR_NAME = 2 }
enum	dict_col_sys_foreign_cols_enum { DICT_COL__SYS_FOREIGN_COLS__ID = 0, DICT_COL__SYS_FOREIGN_COLS__POS = 1, DICT_COL__SYS_FOREIGN_COLS__FOR_COL_NAME = 2, DICT_COL__SYS_FOREIGN_COLS__REF_COL_NAME = 3, DICT_NUM_COLS__SYS_FOREIGN_COLS = 4 }
enum	dict_fld_sys_foreign_cols_enum { DICT_FLD__SYS_FOREIGN_COLS__ID = 0, DICT_FLD__SYS_FOREIGN_COLS__POS = 1, DICT_FLD__SYS_FOREIGN_COLS__DB_TRX_ID = 2, DICT_FLD__SYS_FOREIGN_COLS__DB_ROLL_PTR = 3, DICT_FLD__SYS_FOREIGN_COLS__FOR_COL_NAME = 4, DICT_FLD__SYS_FOREIGN_COLS__REF_COL_NAME = 5, DICT_NUM_FIELDS__SYS_FOREIGN_COLS = 6 }
enum	dict_col_sys_tablespaces_enum { DICT_COL__SYS_TABLESPACES__SPACE = 0, DICT_COL__SYS_TABLESPACES__NAME = 1, DICT_COL__SYS_TABLESPACES__FLAGS = 2, DICT_NUM_COLS__SYS_TABLESPACES = 3 }
enum	dict_fld_sys_tablespaces_enum { DICT_FLD__SYS_TABLESPACES__SPACE = 0, DICT_FLD__SYS_TABLESPACES__DB_TRX_ID = 1, DICT_FLD__SYS_TABLESPACES__DB_ROLL_PTR = 2, DICT_FLD__SYS_TABLESPACES__NAME = 3, DICT_FLD__SYS_TABLESPACES__FLAGS = 4, DICT_NUM_FIELDS__SYS_TABLESPACES = 5 }
enum	dict_col_sys_datafiles_enum { DICT_COL__SYS_DATAFILES__SPACE = 0, DICT_COL__SYS_DATAFILES__PATH = 1, DICT_NUM_COLS__SYS_DATAFILES = 2 }
enum	dict_fld_sys_datafiles_enum { DICT_FLD__SYS_DATAFILES__SPACE = 0, DICT_FLD__SYS_DATAFILES__DB_TRX_ID = 1, DICT_FLD__SYS_DATAFILES__DB_ROLL_PTR = 2, DICT_FLD__SYS_DATAFILES__PATH = 3, DICT_NUM_FIELDS__SYS_DATAFILES = 4 }

Functions
UNIV_INTERN dict_hdr_t *	dict_hdr_get (mtr_t *mtr)
UNIV_INTERN void	dict_hdr_get_new_id (table_id_t table_id, index_id_t index_id, ulint *space_id)
UNIV_INTERN void	dict_hdr_flush_row_id (void)
UNIV_INLINE row_id_t	dict_sys_get_new_row_id (void)
UNIV_INLINE row_id_t	dict_sys_read_row_id (const byte *field)
UNIV_INLINE void	dict_sys_write_row_id (byte *field, row_id_t row_id)
UNIV_INTERN dberr_t	dict_boot (void) __attribute__((warn_unused_result))
UNIV_INTERN dberr_t	dict_create (void) __attribute__((warn_unused_result))
UNIV_INLINE bool	dict_is_sys_table (table_id_t id) __attribute__((warn_unused_result))

Detailed Description

Data dictionary creation and booting

Created 4/18/1996 Heikki Tuuri

Definition in file dict0boot.h.

Macro Definition Documentation

#define DICT_HDR_FIRST_ID

Value:

10      /* the ids for tables etc. start
                                        from this number, except for basic
                                        system tables and their above defined
                                        indexes; ibuf tables and indexes are
                                        assigned as the id the number
                                        DICT_IBUF_ID_MIN plus the space id */

Definition at line 131 of file dict0boot.h.

#define DICT_HDR_FSEG_HEADER

Value:

56      /* Segment header for the tablespace
                                        segment into which the dictionary
                                        header is created */

Definition at line 149 of file dict0boot.h.

Function Documentation

UNIV_INTERN dberr_t dict_boot ( void )

Initializes the data dictionary memory structures when the database is started. This function is also called when the data dictionary is created.

Returns: DB_SUCCESS or error code.

Definition at line 247 of file dict0boot.cc.

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UNIV_INTERN dberr_t dict_create ( void )

Creates and initializes the data dictionary at the server bootstrap.

Returns: DB_SUCCESS or error code.

Definition at line 494 of file dict0boot.cc.

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UNIV_INTERN void dict_hdr_flush_row_id ( void )

Writes the current value of the row id counter to the dictionary header file page.

Definition at line 115 of file dict0boot.cc.

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UNIV_INTERN dict_hdr_t* dict_hdr_get ( mtr_t * mtr )

Gets a pointer to the dictionary header and x-latches its page.

Returns: pointer to the dictionary header, page x-latched in: mtr

Gets a pointer to the dictionary header and x-latches its page.

Returns: pointer to the dictionary header, page x-latched

Parameters

mtr in: mtr

Definition at line 47 of file dict0boot.cc.

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UNIV_INTERN void dict_hdr_get_new_id	(	table_id_t *	table_id,
		index_id_t *	index_id,
		ulint *	space_id
	)

Returns a new table, index, or space id. out: space id (not assigned if NULL)

Returns a new table, index, or space id.

Parameters

table_id	out: table id (not assigned if NULL)
index_id	out: index id (not assigned if NULL)
space_id	out: space id (not assigned if NULL)

Definition at line 67 of file dict0boot.cc.

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UNIV_INLINE bool dict_is_sys_table ( table_id_t id )

Check if a table id belongs to system table.

Returns: true if the table id belongs to a system table.

Parameters

id	in: table id to check

UNIV_INLINE row_id_t dict_sys_get_new_row_id ( void )

Returns a new row id.

Returns: the new id

UNIV_INLINE row_id_t dict_sys_read_row_id ( const byte * field )

Reads a row id from a record or other 6-byte stored form.

Returns: row id in: record field

UNIV_INLINE void dict_sys_write_row_id	(	byte *	field,
		row_id_t	row_id
	)

Writes a row id to a record or other 6-byte stored form. in: row id

Parameters

field in: record field

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

Function Documentation