/*****************************************************************//** 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_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, 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); }
/****************************************************************//** Creates a rollback segment header. This function is called only when a new rollback segment is created in the database. @return page number of the created segment, FIL_NULL if fail */ UNIV_INTERN ulint trx_rseg_header_create( /*===================*/ ulint space, /*!< in: space id */ ulint zip_size, /*!< in: compressed page size in bytes or 0 for uncompressed pages */ ulint max_size, /*!< in: max size in pages */ ulint rseg_slot_no, /*!< in: rseg id == slot number in trx sys */ mtr_t* mtr) /*!< in: mtr */ { ulint page_no; trx_rsegf_t* rsegf; trx_sysf_t* sys_header; ulint i; buf_block_t* block; ut_ad(mtr); ut_ad(mutex_own(&kernel_mutex)); ut_ad(mtr_memo_contains(mtr, fil_space_get_latch(space, NULL), MTR_MEMO_X_LOCK)); /* Allocate a new file segment for the rollback segment */ block = fseg_create(space, 0, TRX_RSEG + TRX_RSEG_FSEG_HEADER, mtr); if (block == NULL) { /* No space left */ return(FIL_NULL); } buf_block_dbg_add_level(block, SYNC_RSEG_HEADER_NEW); page_no = buf_block_get_page_no(block); /* Get the rollback segment file page */ rsegf = trx_rsegf_get_new(space, zip_size, page_no, mtr); /* Initialize max size field */ mlog_write_ulint(rsegf + TRX_RSEG_MAX_SIZE, max_size, MLOG_4BYTES, mtr); /* Initialize the history list */ mlog_write_ulint(rsegf + TRX_RSEG_HISTORY_SIZE, 0, MLOG_4BYTES, mtr); flst_init(rsegf + TRX_RSEG_HISTORY, mtr); /* Reset the undo log slots */ for (i = 0; i < TRX_RSEG_N_SLOTS; i++) { trx_rsegf_set_nth_undo(rsegf, i, FIL_NULL, mtr); } /* Add the rollback segment info to the free slot in the trx system header */ sys_header = trx_sysf_get(mtr); trx_sysf_rseg_set_space(sys_header, rseg_slot_no, space, mtr); trx_sysf_rseg_set_page_no(sys_header, rseg_slot_no, page_no, mtr); return(page_no); }
ulint trx_rseg_header_create( /*===================*/ /* out: page number of the created segment, FIL_NULL if fail */ ulint space, /* in: space id */ ulint max_size, /* in: max size in pages */ ulint* slot_no, /* out: rseg id == slot number in trx sys */ mtr_t* mtr) /* in: mtr */ { ulint page_no; trx_rsegf_t* rsegf; trx_sysf_t* sys_header; ulint i; page_t* page; ut_ad(mtr); #ifdef UNIV_SYNC_DEBUG ut_ad(mutex_own(&kernel_mutex)); #endif /* UNIV_SYNC_DEBUG */ ut_ad(mtr_memo_contains(mtr, fil_space_get_latch(space), MTR_MEMO_X_LOCK)); sys_header = trx_sysf_get(mtr); *slot_no = trx_sysf_rseg_find_free(mtr); if (*slot_no == ULINT_UNDEFINED) { return(FIL_NULL); } /* Allocate a new file segment for the rollback segment */ page = fseg_create(space, 0, TRX_RSEG + TRX_RSEG_FSEG_HEADER, mtr); if (page == NULL) { /* No space left */ return(FIL_NULL); } #ifdef UNIV_SYNC_DEBUG buf_page_dbg_add_level(page, SYNC_RSEG_HEADER_NEW); #endif /* UNIV_SYNC_DEBUG */ page_no = buf_frame_get_page_no(page); /* Get the rollback segment file page */ rsegf = trx_rsegf_get_new(space, page_no, mtr); /* Initialize max size field */ mlog_write_ulint(rsegf + TRX_RSEG_MAX_SIZE, max_size, MLOG_4BYTES, mtr); /* Initialize the history list */ mlog_write_ulint(rsegf + TRX_RSEG_HISTORY_SIZE, 0, MLOG_4BYTES, mtr); flst_init(rsegf + TRX_RSEG_HISTORY, mtr); /* Reset the undo log slots */ for (i = 0; i < TRX_RSEG_N_SLOTS; i++) { trx_rsegf_set_nth_undo(rsegf, i, FIL_NULL, mtr); } /* Add the rollback segment info to the free slot in the trx system header */ trx_sysf_rseg_set_space(sys_header, *slot_no, space, mtr); trx_sysf_rseg_set_page_no(sys_header, *slot_no, page_no, mtr); return(page_no); }