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78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
/*****************************************************************************
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Copyright (c) 1996, 2013, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2020, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/dict0boot.ic
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Data dictionary creation and booting
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Created 4/18/1996 Heikki Tuuri
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*******************************************************/
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/**********************************************************************//**
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Returns a new row id.
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@return the new id */
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UNIV_INLINE
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row_id_t
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dict_sys_get_new_row_id(void)
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/*=========================*/
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{
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row_id_t id;
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mutex_enter(&dict_sys.mutex);
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id = dict_sys.row_id;
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if (0 == (id % DICT_HDR_ROW_ID_WRITE_MARGIN)) {
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dict_hdr_flush_row_id();
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}
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dict_sys.row_id++;
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mutex_exit(&dict_sys.mutex);
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return(id);
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}
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/**********************************************************************//**
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Writes a row id to a record or other 6-byte stored form. */
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UNIV_INLINE
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void
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dict_sys_write_row_id(
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/*==================*/
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byte* field, /*!< in: record field */
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row_id_t row_id) /*!< in: row id */
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{
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compile_time_assert(DATA_ROW_ID_LEN == 6);
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mach_write_to_6(field, row_id);
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}
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/*********************************************************************//**
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Check if a table id belongs to system table.
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@return true if the table id belongs to a system table. */
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UNIV_INLINE
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bool
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dict_is_sys_table(
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/*==============*/
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table_id_t id) /*!< in: table id to check */
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{
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return(id < DICT_HDR_FIRST_ID);
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}
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