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Diffstat (limited to 'storage/innobase/include/dict0boot.h')
-rw-r--r-- | storage/innobase/include/dict0boot.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/storage/innobase/include/dict0boot.h b/storage/innobase/include/dict0boot.h new file mode 100644 index 00000000000..86702cbca05 --- /dev/null +++ b/storage/innobase/include/dict0boot.h @@ -0,0 +1,133 @@ +/****************************************************** +Data dictionary creation and booting + +(c) 1996 Innobase Oy + +Created 4/18/1996 Heikki Tuuri +*******************************************************/ + +#ifndef dict0boot_h +#define dict0boot_h + +#include "univ.i" + +#include "mtr0mtr.h" +#include "mtr0log.h" +#include "ut0byte.h" +#include "buf0buf.h" +#include "fsp0fsp.h" +#include "dict0dict.h" + +typedef byte dict_hdr_t; + +/************************************************************************** +Gets a pointer to the dictionary header and x-latches its page. */ + +dict_hdr_t* +dict_hdr_get( +/*=========*/ + /* out: pointer to the dictionary header, + page x-latched */ + mtr_t* mtr); /* in: mtr */ +/************************************************************************** +Returns a new row, table, index, or tree id. */ + +dulint +dict_hdr_get_new_id( +/*================*/ + /* out: the new id */ + ulint type); /* in: DICT_HDR_ROW_ID, ... */ +/************************************************************************** +Returns a new row id. */ +UNIV_INLINE +dulint +dict_sys_get_new_row_id(void); +/*=========================*/ + /* out: the new id */ +/************************************************************************** +Reads a row id from a record or other 6-byte stored form. */ +UNIV_INLINE +dulint +dict_sys_read_row_id( +/*=================*/ + /* out: row id */ + byte* field); /* in: record field */ +/************************************************************************** +Writes a row id to a record or other 6-byte stored form. */ +UNIV_INLINE +void +dict_sys_write_row_id( +/*==================*/ + byte* field, /* in: record field */ + dulint row_id);/* in: row id */ +/********************************************************************* +Initializes the data dictionary memory structures when the database is +started. This function is also called when the data dictionary is created. */ + +void +dict_boot(void); +/*===========*/ +/********************************************************************* +Creates and initializes the data dictionary at the database creation. */ + +void +dict_create(void); +/*=============*/ + + +/* Space id and page no where the dictionary header resides */ +#define DICT_HDR_SPACE 0 /* the SYSTEM tablespace */ +#define DICT_HDR_PAGE_NO FSP_DICT_HDR_PAGE_NO + +/* The ids for the basic system tables and their indexes */ +#define DICT_TABLES_ID ut_dulint_create(0, 1) +#define DICT_COLUMNS_ID ut_dulint_create(0, 2) +#define DICT_INDEXES_ID ut_dulint_create(0, 3) +#define DICT_FIELDS_ID ut_dulint_create(0, 4) +/* The following is a secondary index on SYS_TABLES */ +#define DICT_TABLE_IDS_ID ut_dulint_create(0, 5) + +#define DICT_HDR_FIRST_ID 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 */ +#define DICT_IBUF_ID_MIN ut_dulint_create(0xFFFFFFFFUL, 0) + +/* The offset of the dictionary header on the page */ +#define DICT_HDR FSEG_PAGE_DATA + +/*-------------------------------------------------------------*/ +/* Dictionary header offsets */ +#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_MIX_ID 24 /* The latest assigned mix id */ +#define DICT_HDR_TABLES 32 /* Root of the table index tree */ +#define DICT_HDR_TABLE_IDS 36 /* Root of the table index tree */ +#define DICT_HDR_COLUMNS 40 /* Root of the column index tree */ +#define DICT_HDR_INDEXES 44 /* Root of the index index tree */ +#define DICT_HDR_FIELDS 48 /* Root of the index field index tree */ + +#define DICT_HDR_FSEG_HEADER 56 /* Segment header for the tablespace + segment into which the dictionary + header is created */ +/*-------------------------------------------------------------*/ + +/* The field number of the page number field in the sys_indexes table +clustered index */ +#define DICT_SYS_INDEXES_PAGE_NO_FIELD 8 +#define DICT_SYS_INDEXES_SPACE_NO_FIELD 7 +#define DICT_SYS_INDEXES_TYPE_FIELD 6 + +/* When a row id which is zero modulo this number (which must be a power of +two) is assigned, the field DICT_HDR_ROW_ID on the dictionary header page is +updated */ +#define DICT_HDR_ROW_ID_WRITE_MARGIN 256 + +#ifndef UNIV_NONINL +#include "dict0boot.ic" +#endif + +#endif |