mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-01-27 01:04:19 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions
mariadb/storage/xtradb/dict/dict0boot.c
Sergei Golubchik 37f5632212 merged with XtraDB 1.1.8-26.0
2012-06-15 14:54:23 +02:00

663 lines
19 KiB
C
Raw Blame History

/*****************************************************************************
Copyright (c) 1996, 2010, Innobase Oy. 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., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*****************************************************************************/
/**************************************************//**
@file dict/dict0boot.c
Data dictionary creation and booting
Created 4/18/1996 Heikki Tuuri
*******************************************************/
#include "dict0boot.h"
#ifdef UNIV_NONINL
#include "dict0boot.ic"
#endif
#include "dict0crea.h"
#include "btr0btr.h"
#include "dict0load.h"
#include "dict0load.h"
#include "trx0trx.h"
#include "srv0srv.h"
#include "ibuf0ibuf.h"
#include "buf0flu.h"
#include "log0recv.h"
#include "os0file.h"
/**********************************************************************//**
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 */
{
buf_block_t* block;
dict_hdr_t* header;
block = buf_page_get(DICT_HDR_SPACE, 0, DICT_HDR_PAGE_NO,
RW_X_LATCH, mtr);
header = DICT_HDR + buf_block_get_frame(block);
buf_block_dbg_add_level(block, SYNC_DICT_HEADER);
return(header);
}
/**********************************************************************//**
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) */
{
dict_hdr_t* dict_hdr;
ib_id_t id;
mtr_t mtr;
mtr_start(&mtr);
dict_hdr = dict_hdr_get(&mtr);
if (table_id) {
id = mach_read_from_8(dict_hdr + DICT_HDR_TABLE_ID);
id++;
mlog_write_ull(dict_hdr + DICT_HDR_TABLE_ID, id, &mtr);
*table_id = id;
}
if (index_id) {
id = mach_read_from_8(dict_hdr + DICT_HDR_INDEX_ID);
id++;
mlog_write_ull(dict_hdr + DICT_HDR_INDEX_ID, id, &mtr);
*index_id = id;
}
if (space_id) {
*space_id = mtr_read_ulint(dict_hdr + DICT_HDR_MAX_SPACE_ID,
MLOG_4BYTES, &mtr);
if (fil_assign_new_space_id(space_id)) {
mlog_write_ulint(dict_hdr + DICT_HDR_MAX_SPACE_ID,
*space_id, MLOG_4BYTES, &mtr);
}
}
mtr_commit(&mtr);
}
/**********************************************************************//**
Writes the current value of the row id counter to the dictionary header file
page. */
UNIV_INTERN
void
dict_hdr_flush_row_id(void)
/*=======================*/
{
dict_hdr_t* dict_hdr;
row_id_t id;
mtr_t mtr;
ut_ad(mutex_own(&(dict_sys->mutex)));
id = dict_sys->row_id;
mtr_start(&mtr);
dict_hdr = dict_hdr_get(&mtr);
mlog_write_ull(dict_hdr + DICT_HDR_ROW_ID, id, &mtr);
mtr_commit(&mtr);
}
/*****************************************************************//**
Creates the file page for the dictionary header. This function is
called only at the database creation.
@return TRUE if succeed */
static
ibool
dict_hdr_create(
/*============*/
mtr_t* mtr) /*!< in: mtr */
{
buf_block_t* block;
dict_hdr_t* dict_header;
ulint root_page_no;
ut_ad(mtr);
/* Create the dictionary header file block in a new, allocated file
segment in the system tablespace */
block = fseg_create(DICT_HDR_SPACE, 0,
DICT_HDR + DICT_HDR_FSEG_HEADER, mtr);
ut_a(DICT_HDR_PAGE_NO == buf_block_get_page_no(block));
dict_header = dict_hdr_get(mtr);
/* Start counting row, table, index, and tree ids from
DICT_HDR_FIRST_ID */
mlog_write_ull(dict_header + DICT_HDR_ROW_ID,
DICT_HDR_FIRST_ID, mtr);
mlog_write_ull(dict_header + DICT_HDR_TABLE_ID,
DICT_HDR_FIRST_ID, mtr);
mlog_write_ull(dict_header + DICT_HDR_INDEX_ID,
DICT_HDR_FIRST_ID, mtr);
mlog_write_ulint(dict_header + DICT_HDR_MAX_SPACE_ID,
0, MLOG_4BYTES, mtr);
/* Obsolete, but we must initialize it anyway. */
mlog_write_ulint(dict_header + DICT_HDR_MIX_ID_LOW,
DICT_HDR_FIRST_ID, MLOG_4BYTES, mtr);
/* Create the B-tree roots for the clustered indexes of the basic
system tables */
/*--------------------------*/
root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE,
DICT_HDR_SPACE, 0, DICT_TABLES_ID,
dict_ind_redundant, mtr);
if (root_page_no == FIL_NULL) {
return(FALSE);
}
mlog_write_ulint(dict_header + DICT_HDR_TABLES, root_page_no,
MLOG_4BYTES, mtr);
/*--------------------------*/
root_page_no = btr_create(DICT_UNIQUE, DICT_HDR_SPACE, 0,
DICT_TABLE_IDS_ID,
dict_ind_redundant, mtr);
if (root_page_no == FIL_NULL) {
return(FALSE);
}
mlog_write_ulint(dict_header + DICT_HDR_TABLE_IDS, root_page_no,
MLOG_4BYTES, mtr);
/*--------------------------*/
root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE,
DICT_HDR_SPACE, 0, DICT_COLUMNS_ID,
dict_ind_redundant, mtr);
if (root_page_no == FIL_NULL) {
return(FALSE);
}
mlog_write_ulint(dict_header + DICT_HDR_COLUMNS, root_page_no,
MLOG_4BYTES, mtr);
/*--------------------------*/
root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE,
DICT_HDR_SPACE, 0, DICT_INDEXES_ID,
dict_ind_redundant, mtr);
if (root_page_no == FIL_NULL) {
return(FALSE);
}
mlog_write_ulint(dict_header + DICT_HDR_INDEXES, root_page_no,
MLOG_4BYTES, mtr);
/*--------------------------*/
root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE,
DICT_HDR_SPACE, 0, DICT_FIELDS_ID,
dict_ind_redundant, mtr);
if (root_page_no == FIL_NULL) {
return(FALSE);
}
mlog_write_ulint(dict_header + DICT_HDR_FIELDS, root_page_no,
MLOG_4BYTES, mtr);
/*--------------------------*/
return(TRUE);
}
/*****************************************************************//**
Verifies the SYS_STATS table by scanning its clustered index. This
function may only be called at InnoDB startup time.
@return TRUE if SYS_STATS was verified successfully */
UNIV_INTERN
ibool
dict_verify_xtradb_sys_stats(void)
/*==============================*/
{
dict_index_t* sys_stats_index;
ulint saved_srv_pass_corrupt_table = srv_pass_corrupt_table;
ibool result;
sys_stats_index = dict_table_get_first_index(dict_sys->sys_stats);
/* Since this may be called only during server startup, avoid hitting
various asserts by using XtraDB pass_corrupt_table option. */
srv_pass_corrupt_table = 1;
result = btr_validate_index(sys_stats_index, NULL);
srv_pass_corrupt_table = saved_srv_pass_corrupt_table;
return result;
}
/*****************************************************************//**
Creates the B-tree for the SYS_STATS clustered index, adds the XtraDB
mark and the id of the index to the dictionary header page. Rewrites
both passed args. */
static
void
dict_create_xtradb_sys_stats(
/*=========================*/
dict_hdr_t** dict_hdr, /*!< in/out: dictionary header */
mtr_t* mtr) /*!< in/out: mtr */
{
ulint root_page_no;
root_page_no = btr_create(DICT_CLUSTERED | DICT_UNIQUE,
DICT_HDR_SPACE, 0, DICT_STATS_ID,
dict_ind_redundant, mtr);
if (root_page_no == FIL_NULL) {
fprintf(stderr, "InnoDB: Warning: failed to create SYS_STATS btr.\n");
srv_use_sys_stats_table = FALSE;
} else {
mlog_write_ulint(*dict_hdr + DICT_HDR_STATS, root_page_no,
MLOG_4BYTES, mtr);
mlog_write_ull(*dict_hdr + DICT_HDR_XTRADB_MARK,
DICT_HDR_XTRADB_FLAG, mtr);
}
mtr_commit(mtr);
/* restart mtr */
mtr_start(mtr);
*dict_hdr = dict_hdr_get(mtr);
}
/*****************************************************************//**
Create the table and index structure of SYS_STATS for the dictionary
cache and add it there. If called for the first time, also support
wrong root page id injection for testing purposes. */
static
void
dict_add_to_cache_xtradb_sys_stats(
/*===============================*/
ibool first_time __attribute__((unused)),
/*!< in: first invocation flag. If
TRUE, optionally inject wrong root page
id */
mem_heap_t* heap, /*!< in: memory heap for table/index
allocation */
dict_hdr_t* dict_hdr, /*!< in: dictionary header */
mtr_t* mtr) /*!< in: mtr */
{
dict_table_t* table;
dict_index_t* index;
ulint root_page_id;
ulint error;
table = dict_mem_table_create("SYS_STATS", DICT_HDR_SPACE, 4, 0);
table->n_mysql_handles_opened = 1; /* for pin */
dict_mem_table_add_col(table, heap, "INDEX_ID", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "KEY_COLS", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "DIFF_VALS", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "NON_NULL_VALS", DATA_BINARY, 0, 0);
/* The '+ 2' below comes from the fields DB_TRX_ID, DB_ROLL_PTR */
#if DICT_SYS_STATS_DIFF_VALS_FIELD != 2 + 2
#error "DICT_SYS_STATS_DIFF_VALS_FIELD != 2 + 2"
#endif
#if DICT_SYS_STATS_NON_NULL_VALS_FIELD != 3 + 2
#error "DICT_SYS_STATS_NON_NULL_VALS_FIELD != 3 + 2"
#endif
table->id = DICT_STATS_ID;
dict_table_add_to_cache(table, heap);
dict_sys->sys_stats = table;
mem_heap_empty(heap);
index = dict_mem_index_create("SYS_STATS", "CLUST_IND",
DICT_HDR_SPACE,
DICT_UNIQUE | DICT_CLUSTERED, 2);
dict_mem_index_add_field(index, "INDEX_ID", 0);
dict_mem_index_add_field(index, "KEY_COLS", 0);
index->id = DICT_STATS_ID;
root_page_id = mtr_read_ulint(dict_hdr + DICT_HDR_STATS, MLOG_4BYTES,
mtr);
#ifdef UNIV_DEBUG
if ((srv_sys_stats_root_page != 0) && first_time)
root_page_id = srv_sys_stats_root_page;
#endif
error = dict_index_add_to_cache(table, index, root_page_id, FALSE);
ut_a(error == DB_SUCCESS);
mem_heap_empty(heap);
}
/*****************************************************************//**
Discard the existing dictionary cache SYS_STATS information, create and
add it there anew. Does not touch the old SYS_STATS tablespace page
under the assumption that they are corrupted or overwritten for other
purposes. */
UNIV_INTERN
void
dict_recreate_xtradb_sys_stats(void)
/*================================*/
{
mtr_t mtr;
dict_hdr_t* dict_hdr;
dict_index_t* sys_stats_clust_idx;
mem_heap_t* heap;
heap = mem_heap_create(450);
mutex_enter(&(dict_sys->mutex));
sys_stats_clust_idx = dict_table_get_first_index(dict_sys->sys_stats);
dict_index_remove_from_cache(dict_sys->sys_stats, sys_stats_clust_idx);
dict_table_remove_from_cache(dict_sys->sys_stats);
dict_sys->sys_stats = NULL;
mtr_start(&mtr);
dict_hdr = dict_hdr_get(&mtr);
dict_create_xtradb_sys_stats(&dict_hdr, &mtr);
dict_add_to_cache_xtradb_sys_stats(FALSE, heap, dict_hdr, &mtr);
mem_heap_free(heap);
mtr_commit(&mtr);
mutex_exit(&(dict_sys->mutex));
}
/*****************************************************************//**
Initializes the data dictionary memory structures when the database is
started. This function is also called when the data dictionary is created. */
UNIV_INTERN
void
dict_boot(void)
/*===========*/
{
dict_table_t* table;
dict_index_t* index;
dict_hdr_t* dict_hdr;
mem_heap_t* heap;
mtr_t mtr;
ulint error;
heap = mem_heap_create(450);
mtr_start(&mtr);
/* Create the hash tables etc. */
dict_init();
mutex_enter(&(dict_sys->mutex));
/* Get the dictionary header */
dict_hdr = dict_hdr_get(&mtr);
if (mach_read_from_8(dict_hdr + DICT_HDR_XTRADB_MARK)
!= DICT_HDR_XTRADB_FLAG) {
/* not extended yet by XtraDB, need to be extended */
dict_create_xtradb_sys_stats(&dict_hdr, &mtr);
}
/* Because we only write new row ids to disk-based data structure
(dictionary header) when it is divisible by
DICT_HDR_ROW_ID_WRITE_MARGIN, in recovery we will not recover
the latest value of the row id counter. Therefore we advance
the counter at the database startup to avoid overlapping values.
Note that when a user after database startup first time asks for
a new row id, then because the counter is now divisible by
..._MARGIN, it will immediately be updated to the disk-based
header. */
dict_sys->row_id = DICT_HDR_ROW_ID_WRITE_MARGIN
+ ut_uint64_align_up(mach_read_from_8(dict_hdr + DICT_HDR_ROW_ID),
DICT_HDR_ROW_ID_WRITE_MARGIN);
/* Insert into the dictionary cache the descriptions of the basic
system tables */
/*-------------------------*/
table = dict_mem_table_create("SYS_TABLES", DICT_HDR_SPACE, 8, 0);
table->n_mysql_handles_opened = 1; /* for pin */
dict_mem_table_add_col(table, heap, "NAME", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "ID", DATA_BINARY, 0, 0);
/* ROW_FORMAT = (N_COLS >> 31) ? COMPACT : REDUNDANT */
dict_mem_table_add_col(table, heap, "N_COLS", DATA_INT, 0, 4);
/* TYPE is either DICT_TABLE_ORDINARY, or (TYPE & DICT_TF_COMPACT)
and (TYPE & DICT_TF_FORMAT_MASK) are nonzero and TYPE = table->flags */
dict_mem_table_add_col(table, heap, "TYPE", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "MIX_ID", DATA_BINARY, 0, 0);
/* MIX_LEN may contain additional table flags when
ROW_FORMAT!=REDUNDANT. Currently, these flags include
DICT_TF2_TEMPORARY. */
dict_mem_table_add_col(table, heap, "MIX_LEN", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "CLUSTER_NAME", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "SPACE", DATA_INT, 0, 4);
table->id = DICT_TABLES_ID;
dict_table_add_to_cache(table, heap);
dict_sys->sys_tables = table;
mem_heap_empty(heap);
index = dict_mem_index_create("SYS_TABLES", "CLUST_IND",
DICT_HDR_SPACE,
DICT_UNIQUE | DICT_CLUSTERED, 1);
dict_mem_index_add_field(index, "NAME", 0);
index->id = DICT_TABLES_ID;
error = dict_index_add_to_cache(table, index,
mtr_read_ulint(dict_hdr
+ DICT_HDR_TABLES,
MLOG_4BYTES, &mtr),
FALSE);
ut_a(error == DB_SUCCESS);
/*-------------------------*/
index = dict_mem_index_create("SYS_TABLES", "ID_IND",
DICT_HDR_SPACE, DICT_UNIQUE, 1);
dict_mem_index_add_field(index, "ID", 0);
index->id = DICT_TABLE_IDS_ID;
error = dict_index_add_to_cache(table, index,
mtr_read_ulint(dict_hdr
+ DICT_HDR_TABLE_IDS,
MLOG_4BYTES, &mtr),
FALSE);
ut_a(error == DB_SUCCESS);
/*-------------------------*/
table = dict_mem_table_create("SYS_COLUMNS", DICT_HDR_SPACE, 7, 0);
table->n_mysql_handles_opened = 1; /* for pin */
dict_mem_table_add_col(table, heap, "TABLE_ID", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "POS", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "NAME", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "MTYPE", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "PRTYPE", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "LEN", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "PREC", DATA_INT, 0, 4);
table->id = DICT_COLUMNS_ID;
dict_table_add_to_cache(table, heap);
dict_sys->sys_columns = table;
mem_heap_empty(heap);
index = dict_mem_index_create("SYS_COLUMNS", "CLUST_IND",
DICT_HDR_SPACE,
DICT_UNIQUE | DICT_CLUSTERED, 2);
dict_mem_index_add_field(index, "TABLE_ID", 0);
dict_mem_index_add_field(index, "POS", 0);
index->id = DICT_COLUMNS_ID;
error = dict_index_add_to_cache(table, index,
mtr_read_ulint(dict_hdr
+ DICT_HDR_COLUMNS,
MLOG_4BYTES, &mtr),
FALSE);
ut_a(error == DB_SUCCESS);
/*-------------------------*/
table = dict_mem_table_create("SYS_INDEXES", DICT_HDR_SPACE, 7, 0);
table->n_mysql_handles_opened = 1; /* for pin */
dict_mem_table_add_col(table, heap, "TABLE_ID", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "ID", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "NAME", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "N_FIELDS", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "TYPE", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "SPACE", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "PAGE_NO", DATA_INT, 0, 4);
/* The '+ 2' below comes from the fields DB_TRX_ID, DB_ROLL_PTR */
#if DICT_SYS_INDEXES_PAGE_NO_FIELD != 6 + 2
#error "DICT_SYS_INDEXES_PAGE_NO_FIELD != 6 + 2"
#endif
#if DICT_SYS_INDEXES_SPACE_NO_FIELD != 5 + 2
#error "DICT_SYS_INDEXES_SPACE_NO_FIELD != 5 + 2"
#endif
#if DICT_SYS_INDEXES_TYPE_FIELD != 4 + 2
#error "DICT_SYS_INDEXES_TYPE_FIELD != 4 + 2"
#endif
#if DICT_SYS_INDEXES_NAME_FIELD != 2 + 2
#error "DICT_SYS_INDEXES_NAME_FIELD != 2 + 2"
#endif
table->id = DICT_INDEXES_ID;
dict_table_add_to_cache(table, heap);
dict_sys->sys_indexes = table;
mem_heap_empty(heap);
index = dict_mem_index_create("SYS_INDEXES", "CLUST_IND",
DICT_HDR_SPACE,
DICT_UNIQUE | DICT_CLUSTERED, 2);
dict_mem_index_add_field(index, "TABLE_ID", 0);
dict_mem_index_add_field(index, "ID", 0);
index->id = DICT_INDEXES_ID;
error = dict_index_add_to_cache(table, index,
mtr_read_ulint(dict_hdr
+ DICT_HDR_INDEXES,
MLOG_4BYTES, &mtr),
FALSE);
ut_a(error == DB_SUCCESS);
/*-------------------------*/
table = dict_mem_table_create("SYS_FIELDS", DICT_HDR_SPACE, 3, 0);
table->n_mysql_handles_opened = 1; /* for pin */
dict_mem_table_add_col(table, heap, "INDEX_ID", DATA_BINARY, 0, 0);
dict_mem_table_add_col(table, heap, "POS", DATA_INT, 0, 4);
dict_mem_table_add_col(table, heap, "COL_NAME", DATA_BINARY, 0, 0);
table->id = DICT_FIELDS_ID;
dict_table_add_to_cache(table, heap);
dict_sys->sys_fields = table;
mem_heap_empty(heap);
index = dict_mem_index_create("SYS_FIELDS", "CLUST_IND",
DICT_HDR_SPACE,
DICT_UNIQUE | DICT_CLUSTERED, 2);
dict_mem_index_add_field(index, "INDEX_ID", 0);
dict_mem_index_add_field(index, "POS", 0);
index->id = DICT_FIELDS_ID;
error = dict_index_add_to_cache(table, index,
mtr_read_ulint(dict_hdr
+ DICT_HDR_FIELDS,
MLOG_4BYTES, &mtr),
FALSE);
ut_a(error == DB_SUCCESS);
dict_add_to_cache_xtradb_sys_stats(TRUE, heap, dict_hdr, &mtr);
mem_heap_free(heap);
mtr_commit(&mtr);
/*-------------------------*/
/* Initialize the insert buffer table and index for each tablespace */
ibuf_init_at_db_start();
/* Load definitions of other indexes on system tables */
dict_load_sys_table(dict_sys->sys_tables);
dict_load_sys_table(dict_sys->sys_columns);
dict_load_sys_table(dict_sys->sys_indexes);
dict_load_sys_table(dict_sys->sys_fields);
dict_load_sys_table(dict_sys->sys_stats);
mutex_exit(&(dict_sys->mutex));
}
/*****************************************************************//**
Inserts the basic system table data into themselves in the database
creation. */
static
void
dict_insert_initial_data(void)
/*==========================*/
{
/* Does nothing yet */
}
/*****************************************************************//**
Creates and initializes the data dictionary at the database creation. */
UNIV_INTERN
void
dict_create(void)
/*=============*/
{
mtr_t mtr;
mtr_start(&mtr);
dict_hdr_create(&mtr);
mtr_commit(&mtr);
dict_boot();
dict_insert_initial_data();
}
Reference in a new issue View git blame Copy permalink