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63 lines
2.3 KiB
Text
63 lines
2.3 KiB
Text
/*****************************************************************************
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Copyright (C) 2013, 2018, 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 St, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/******************************************************************//**
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@file include/fsp0pagecompress.ic
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Implementation for helper functions for extracting/storing page
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compression and atomic writes information to file space.
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Created 11/12/2013 Jan Lindström jan.lindstrom@mariadb.com
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***********************************************************************/
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/********************************************************************//**
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Determine the tablespace is page compression level from dict_table_t::flags.
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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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fsp_flags_get_page_compression_level(
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/*=================================*/
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ulint flags) /*!< in: tablespace flags */
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{
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return(FSP_FLAGS_GET_PAGE_COMPRESSION_LEVEL(flags));
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}
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/*******************************************************************//**
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Find out wheather the page is page compressed
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@return true if page is page compressed, false if not */
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UNIV_INLINE
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bool
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fil_page_is_compressed(
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/*===================*/
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const byte* buf) /*!< in: page */
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{
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return(mach_read_from_2(buf+FIL_PAGE_TYPE) == FIL_PAGE_PAGE_COMPRESSED);
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}
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/*******************************************************************//**
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Find out wheather the page is page compressed
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@return true if page is page compressed, false if not */
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UNIV_INLINE
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bool
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fil_page_is_compressed_encrypted(
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/*=============================*/
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const byte* buf) /*!< in: page */
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{
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return(mach_read_from_2(buf+FIL_PAGE_TYPE) == FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED);
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}
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