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authorSergei Golubchik <vuvova@gmail.com>2015-05-04 19:17:21 +0200
committerSergei Golubchik <vuvova@gmail.com>2015-05-04 19:17:21 +0200
commit6d06fbbd1dc25b3c12568f9038060dfdb69f9683 (patch)
tree21e27f3fddc89f9dda6b337091464ba10c490123 /storage/innobase/include/dict0boot.h
parent1645930d0bd02f79df3ebff412b90acdc15bd9a0 (diff)
downloadmariadb-git-6d06fbbd1dc25b3c12568f9038060dfdb69f9683.tar.gz
move to storage/innobase
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+/*****************************************************************************
+
+Copyright (c) 1996, 2012, Oracle and/or its affiliates. All Rights Reserved.
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; version 2 of the License.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
+
+*****************************************************************************/
+
+/**************************************************//**
+@file include/dict0boot.h
+Data dictionary creation and booting
+
+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.
+@return pointer to the dictionary header, page x-latched */
+UNIV_INTERN
+dict_hdr_t*
+dict_hdr_get(
+/*=========*/
+ mtr_t* mtr); /*!< in: mtr */
+/**********************************************************************//**
+Returns a new table, index, or space id. */
+UNIV_INTERN
+void
+dict_hdr_get_new_id(
+/*================*/
+ table_id_t* table_id, /*!< out: table id
+ (not assigned if NULL) */
+ index_id_t* index_id, /*!< out: index id
+ (not assigned if NULL) */
+ ulint* space_id); /*!< out: space id
+ (not assigned if NULL) */
+/**********************************************************************//**
+Writes the current value of the row id counter to the dictionary header file
+page. */
+UNIV_INTERN
+void
+dict_hdr_flush_row_id(void);
+/*=======================*/
+/**********************************************************************//**
+Returns a new row id.
+@return the new id */
+UNIV_INLINE
+row_id_t
+dict_sys_get_new_row_id(void);
+/*=========================*/
+/**********************************************************************//**
+Reads a row id from a record or other 6-byte stored form.
+@return row id */
+UNIV_INLINE
+row_id_t
+dict_sys_read_row_id(
+/*=================*/
+ const 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 */
+ row_id_t 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.
+@return DB_SUCCESS or error code. */
+UNIV_INTERN
+dberr_t
+dict_boot(void)
+/*===========*/
+ __attribute__((warn_unused_result));
+
+/*****************************************************************//**
+Creates and initializes the data dictionary at the server bootstrap.
+@return DB_SUCCESS or error code. */
+UNIV_INTERN
+dberr_t
+dict_create(void)
+/*=============*/
+ __attribute__((warn_unused_result));
+
+/*********************************************************************//**
+Check if a table id belongs to system table.
+@return true if the table id belongs to a system table. */
+UNIV_INLINE
+bool
+dict_is_sys_table(
+/*==============*/
+ table_id_t id) /*!< in: table id to check */
+ __attribute__((warn_unused_result));
+
+/* 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 1
+#define DICT_COLUMNS_ID 2
+#define DICT_INDEXES_ID 3
+#define DICT_FIELDS_ID 4
+/* The following is a secondary index on SYS_TABLES */
+#define DICT_TABLE_IDS_ID 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 */
+
+/* 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_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 56 /* Segment header for the tablespace
+ segment into which the dictionary
+ header is created */
+/*-------------------------------------------------------------*/
+
+/* The columns in SYS_TABLES */
+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
+};
+/* The field numbers in the SYS_TABLES clustered index */
+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
+};
+/* The field numbers in the SYS_TABLE_IDS index */
+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
+};
+/* The columns in SYS_COLUMNS */
+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
+};
+/* The field numbers in the SYS_COLUMNS clustered index */
+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
+};
+/* The columns in SYS_INDEXES */
+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
+};
+/* The field numbers in the SYS_INDEXES clustered index */
+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
+};
+/* The columns in SYS_FIELDS */
+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
+};
+/* The field numbers in the SYS_FIELDS clustered index */
+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
+};
+/* The columns in SYS_FOREIGN */
+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
+};
+/* The field numbers in the SYS_FOREIGN clustered index */
+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
+};
+/* The field numbers in the SYS_FOREIGN_FOR_NAME secondary index */
+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
+};
+/* The columns in SYS_FOREIGN_COLS */
+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
+};
+/* The field numbers in the SYS_FOREIGN_COLS clustered index */
+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
+};
+/* The columns in SYS_TABLESPACES */
+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
+};
+/* The field numbers in the SYS_TABLESPACES clustered index */
+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
+};
+/* The columns in SYS_DATAFILES */
+enum dict_col_sys_datafiles_enum {
+ DICT_COL__SYS_DATAFILES__SPACE = 0,
+ DICT_COL__SYS_DATAFILES__PATH = 1,
+ DICT_NUM_COLS__SYS_DATAFILES = 2
+};
+/* The field numbers in the SYS_DATAFILES clustered index */
+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
+};
+
+/* A number of the columns above occur in multiple tables. These are the
+length of thos fields. */
+#define DICT_FLD_LEN_SPACE 4
+#define DICT_FLD_LEN_FLAGS 4
+
+/* 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