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/*****************************************************************************
Copyright (C) 2013, 2017, MariaDB Corporation. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/******************************************************************//**
@file include/fsp0pagecompress.h
Helper functions for extracting/storing page compression and
atomic writes information to file space.
Created 11/12/2013 Jan Lindström jan.lindstrom@skysql.com
***********************************************************************/
#ifndef fsp0pagecompress_h
#define fsp0pagecompress_h
/**********************************************************************//**
Reads the page compression level from the first page of a tablespace.
@return page compression level, or 0 if uncompressed */
UNIV_INTERN
ulint
fsp_header_get_compression_level(
/*=============================*/
const page_t* page); /*!< in: first page of a tablespace */
/********************************************************************//**
Extract the page compression level from tablespace flags.
A tablespace has only one physical page compression level
whether that page is compressed or not.
@return page compression level of the file-per-table tablespace,
or zero if the table is not compressed. */
UNIV_INLINE
ulint
fsp_flags_get_page_compression_level(
/*=================================*/
ulint flags); /*!< in: tablespace flags */
#include "fsp0pagecompress.ic"
#endif
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