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Diffstat (limited to 'innobase/dict/dict0boot.c')
| -rw-r--r-- | innobase/dict/dict0boot.c | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/innobase/dict/dict0boot.c b/innobase/dict/dict0boot.c new file mode 100644 index 00000000000..260e8d4c276 --- /dev/null +++ b/innobase/dict/dict0boot.c @@ -0,0 +1,361 @@ +/****************************************************** +Data dictionary creation and booting + +(c) 1996 Innobase Oy + +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" + +/************************************************************************** +Writes the current value of the row id counter to the dictionary header file +page. */ + +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, MLOG_8BYTES, &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 */ +{ + dict_hdr_t* dict_header; + ulint hdr_page_no; + ulint root_page_no; + page_t* page; + + ut_ad(mtr); + + /* Create the dictionary header file block in a new, allocated file + segment in the system tablespace */ + page = fseg_create(DICT_HDR_SPACE, 0, + DICT_HDR + DICT_HDR_FSEG_HEADER, mtr); + + hdr_page_no = buf_frame_get_page_no(page); + + ut_a(DICT_HDR_PAGE_NO == hdr_page_no); + + 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), + MLOG_8BYTES, mtr); + + mlog_write_dulint(dict_header + DICT_HDR_TABLE_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), + MLOG_8BYTES, mtr); + + mlog_write_dulint(dict_header + DICT_HDR_INDEX_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), + MLOG_8BYTES, mtr); + + mlog_write_dulint(dict_header + DICT_HDR_MIX_ID, + ut_dulint_create(0, DICT_HDR_FIRST_ID), + MLOG_8BYTES, 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, DICT_TABLES_ID, 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, + DICT_TABLE_IDS_ID, 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, DICT_COLUMNS_ID, 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, DICT_INDEXES_ID, 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, DICT_FIELDS_ID, 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. */ + +void +dict_boot(void) +/*===========*/ +{ + dict_table_t* table; + dict_index_t* index; + dict_hdr_t* dict_hdr; + mtr_t mtr; + + 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); + + /* 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, + MLOG_8BYTES, &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); + + dict_mem_table_add_col(table, "NAME", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "ID", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "N_COLS", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "TYPE", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "MIX_ID", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "MIX_LEN", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "CLUSTER_NAME", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "SPACE", DATA_INT, 0, 4, 0); + + table->id = DICT_TABLES_ID; + + dict_table_add_to_cache(table); + dict_sys->sys_tables = table; + + 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->page_no = mtr_read_ulint(dict_hdr + DICT_HDR_TABLES, + MLOG_4BYTES, &mtr); + index->id = DICT_TABLES_ID; + + ut_a(dict_index_add_to_cache(table, index)); + /*-------------------------*/ + index = dict_mem_index_create("SYS_TABLES", "ID_IND", DICT_HDR_SPACE, + DICT_UNIQUE, 1); + dict_mem_index_add_field(index, "ID", 0); + + index->page_no = mtr_read_ulint(dict_hdr + DICT_HDR_TABLE_IDS, + MLOG_4BYTES, &mtr); + index->id = DICT_TABLE_IDS_ID; + ut_a(dict_index_add_to_cache(table, index)); + /*-------------------------*/ + table = dict_mem_table_create("SYS_COLUMNS", DICT_HDR_SPACE, 7); + + dict_mem_table_add_col(table, "TABLE_ID", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "POS", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "NAME", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "MTYPE", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "PRTYPE", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "LEN", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "PREC", DATA_INT, 0, 4, 0); + + table->id = DICT_COLUMNS_ID; + + dict_table_add_to_cache(table); + dict_sys->sys_columns = table; + + 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->page_no = mtr_read_ulint(dict_hdr + DICT_HDR_COLUMNS, + MLOG_4BYTES, &mtr); + index->id = DICT_COLUMNS_ID; + ut_a(dict_index_add_to_cache(table, index)); + /*-------------------------*/ + table = dict_mem_table_create("SYS_INDEXES", DICT_HDR_SPACE, 7); + + dict_mem_table_add_col(table, "TABLE_ID", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "ID", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "NAME", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "N_FIELDS", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "TYPE", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "SPACE", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "PAGE_NO", DATA_INT, 0, 4, 0); + + /* The '+ 2' below comes from the 2 system fields */ + ut_ad(DICT_SYS_INDEXES_PAGE_NO_FIELD == 6 + 2); + ut_ad(DICT_SYS_INDEXES_SPACE_NO_FIELD == 5 + 2); + + table->id = DICT_INDEXES_ID; + dict_table_add_to_cache(table); + dict_sys->sys_indexes = table; + + 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->page_no = mtr_read_ulint(dict_hdr + DICT_HDR_INDEXES, + MLOG_4BYTES, &mtr); + index->id = DICT_INDEXES_ID; + ut_a(dict_index_add_to_cache(table, index)); + /*-------------------------*/ + table = dict_mem_table_create("SYS_FIELDS", DICT_HDR_SPACE, 3); + + dict_mem_table_add_col(table, "INDEX_ID", DATA_BINARY, 0, 0, 0); + dict_mem_table_add_col(table, "POS", DATA_INT, 0, 4, 0); + dict_mem_table_add_col(table, "COL_NAME", DATA_BINARY, 0, 0, 0); + + table->id = DICT_FIELDS_ID; + dict_table_add_to_cache(table); + dict_sys->sys_fields = table; + + 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->page_no = mtr_read_ulint(dict_hdr + DICT_HDR_FIELDS, + MLOG_4BYTES, &mtr); + index->id = DICT_FIELDS_ID; + ut_a(dict_index_add_to_cache(table, index)); + + mtr_commit(&mtr); + /*-------------------------*/ + /* 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); + + /* Initialize the insert buffer table and index for each tablespace */ + + ibuf_init_at_db_start(); + + 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. */ + +void +dict_create(void) +/*=============*/ +{ + mtr_t mtr; + + mtr_start(&mtr); + + dict_hdr_create(&mtr); + + mtr_commit(&mtr); + + dict_boot(); + + dict_insert_initial_data(); + + sync_order_checks_on = TRUE; +} |