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Diffstat (limited to 'storage/xtradb/dict/dict0boot.c')
| -rw-r--r-- | storage/xtradb/dict/dict0boot.c | 462 |
1 files changed, 462 insertions, 0 deletions
diff --git a/storage/xtradb/dict/dict0boot.c b/storage/xtradb/dict/dict0boot.c new file mode 100644 index 00000000000..505ba53ec52 --- /dev/null +++ b/storage/xtradb/dict/dict0boot.c @@ -0,0 +1,462 @@ +/***************************************************************************** + +Copyright (c) 1996, 2009, 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 + +*****************************************************************************/ + +/****************************************************** +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. */ +UNIV_INTERN +dict_hdr_t* +dict_hdr_get( +/*=========*/ + /* out: pointer to the dictionary header, + page x-latched */ + 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 tree id. */ +UNIV_INTERN +dulint +dict_hdr_get_new_id( +/*================*/ + /* out: the new id */ + ulint type) /* in: DICT_HDR_ROW_ID, ... */ +{ + dict_hdr_t* dict_hdr; + dulint id; + mtr_t mtr; + + ut_ad((type == DICT_HDR_TABLE_ID) || (type == DICT_HDR_INDEX_ID)); + + mtr_start(&mtr); + + dict_hdr = dict_hdr_get(&mtr); + + id = mtr_read_dulint(dict_hdr + type, &mtr); + id = ut_dulint_add(id, 1); + + mlog_write_dulint(dict_hdr + type, id, &mtr); + + mtr_commit(&mtr); + + return(id); +} + +/************************************************************************** +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; + dulint 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_dulint(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. */ +static +ibool +dict_hdr_create( +/*============*/ + /* out: TRUE if succeed */ + 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_dulint(dict_header + DICT_HDR_ROW_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), mtr); + + mlog_write_dulint(dict_header + DICT_HDR_TABLE_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), mtr); + + mlog_write_dulint(dict_header + DICT_HDR_INDEX_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), mtr); + + /* Obsolete, but we must initialize it to 0 anyway. */ + mlog_write_dulint(dict_header + DICT_HDR_MIX_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), 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, + srv_sys->dummy_ind1, 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, + srv_sys->dummy_ind1, 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, + srv_sys->dummy_ind1, 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, + srv_sys->dummy_ind1, 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, + srv_sys->dummy_ind1, 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); +} + +/********************************************************************* +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; + + mtr_start(&mtr); + + /* Create the hash tables etc. */ + dict_init(); + + heap = mem_heap_create(450); + + mutex_enter(&(dict_sys->mutex)); + + /* Get the dictionary header */ + dict_hdr = dict_hdr_get(&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 = ut_dulint_add( + ut_dulint_align_up(mtr_read_dulint(dict_hdr + DICT_HDR_ROW_ID, + &mtr), + DICT_HDR_ROW_ID_WRITE_MARGIN), + 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); + + 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); + 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); + + 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); + + 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 2 system fields */ +#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 + + 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); + + 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_free(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); + + 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); + + 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(); +} |