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81 lines
2.9 KiB
C++
81 lines
2.9 KiB
C++
/*****************************************************************************
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Copyright (C) 2013, 2017, MariaDB Corporation. All Rights Reserved.
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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 St, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/******************************************************************//**
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@file include/dict0pagecompress.ic
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Inline implementation for helper functions for extracting/storing
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page compression and atomic writes information to dictionary.
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Created 11/12/2013 Jan Lindström jan.lindstrom@skysql.com
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***********************************************************************/
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/********************************************************************//**
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Extract the page compression level from dict_table_t::flags.
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These flags are in memory, so assert that they are valid.
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@return page compression level, or 0 if not compressed */
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UNIV_INLINE
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ulint
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dict_tf_get_page_compression_level(
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/*===============================*/
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ulint flags) /*!< in: flags */
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{
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ulint page_compression_level = DICT_TF_GET_PAGE_COMPRESSION_LEVEL(flags);
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ut_ad(page_compression_level <= 9);
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return(page_compression_level);
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}
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/********************************************************************//**
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Check whether the table uses the page compression page format.
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@return page compression level, or 0 if not compressed */
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UNIV_INLINE
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ulint
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dict_table_page_compression_level(
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/*==============================*/
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const dict_table_t* table) /*!< in: table */
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{
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ut_ad(table);
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ut_ad(dict_tf_get_page_compression(table->flags));
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return(dict_tf_get_page_compression_level(table->flags));
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}
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/********************************************************************//**
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Check whether the table uses the page compression page format.
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@return true if page compressed, false if not */
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UNIV_INLINE
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ibool
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dict_tf_get_page_compression(
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/*=========================*/
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ulint flags) /*!< in: flags */
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{
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return(DICT_TF_GET_PAGE_COMPRESSION(flags));
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}
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/********************************************************************//**
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Check whether the table uses the page compression page format.
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@return true if page compressed, false if not */
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UNIV_INLINE
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ibool
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dict_table_is_page_compressed(
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/*==========================*/
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const dict_table_t* table) /*!< in: table */
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{
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return (dict_tf_get_page_compression(table->flags));
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}
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