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90c52e5291
Snappy compression method require that output buffer
used for compression is bigger than input buffer.
Similarly lzo require additional work memory buffer.
Increase the allocated buffer accordingly.
buf_tmp_buffer_t: removed unnecessary lzo_mem, crypt_buf_free and
comp_buf_free.
buf_pool_reserve_tmp_slot: use alligned_alloc and if snappy
available allocate size based on snappy_max_compressed_length and
if lzo is available increase buffer by LZO1X_1_15_MEM_COMPRESS.
fil_compress_page: Remove unneeded lzo mem (we use same buffer)
and if output buffer is not yet allocated allocate based similarly
as above.
Decompression does not require additional work area.
Modify test to use same test as other compression method tests.
132 lines
4.5 KiB
C
132 lines
4.5 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 02110-1301 USA
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*****************************************************************************/
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#ifndef fil0pagecompress_h
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#define fil0pagecompress_h
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#include "fsp0fsp.h"
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#include "fsp0pagecompress.h"
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/******************************************************************//**
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@file include/fil0pagecompress.h
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Helper functions for extracting/storing page compression and
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atomic writes information to table space.
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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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Find out wheather the page is index page or not
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@return true if page type index page, false if not */
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UNIV_INLINE
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ibool
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fil_page_is_index_page(
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/*===================*/
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byte *buf); /*!< in: page */
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/****************************************************************//**
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Get the name of the compression algorithm used for page
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compression.
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@return compression algorithm name or "UNKNOWN" if not known*/
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UNIV_INLINE
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const char*
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fil_get_compression_alg_name(
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/*=========================*/
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ulint comp_alg); /*!<in: compression algorithm number */
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/****************************************************************//**
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For page compressed pages compress the page before actual write
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operation.
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@return compressed page to be written*/
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UNIV_INTERN
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byte*
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fil_compress_page(
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/*==============*/
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fil_space_t* space, /*!< in,out: tablespace (NULL during IMPORT) */
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byte* buf, /*!< in: buffer from which to write; in aio
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this must be appropriately aligned */
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byte* out_buf, /*!< out: compressed buffer */
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ulint len, /*!< in: length of input buffer.*/
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ulint level, /* in: compression level */
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ulint block_size, /*!< in: block size */
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bool encrypted, /*!< in: is page also encrypted */
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ulint* out_len); /*!< out: actual length of compressed
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page */
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/****************************************************************//**
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For page compressed pages decompress the page after actual read
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operation. */
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UNIV_INTERN
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void
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fil_decompress_page(
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/*================*/
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byte* page_buf, /*!< in: preallocated buffer or NULL */
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byte* buf, /*!< out: buffer from which to read; in aio
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this must be appropriately aligned */
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ulong len, /*!< in: length of output buffer.*/
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ulint* write_size, /*!< in/out: Actual payload size of
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the compressed data. */
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bool return_error=false);
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/*!< in: true if only an error should
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be produced when decompression fails.
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By default this parameter is false. */
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/****************************************************************//**
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Get space id from fil node
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@return space id*/
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UNIV_INTERN
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ulint
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fil_node_get_space_id(
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/*==================*/
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fil_node_t* node); /*!< in: Node where to get space id*/
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/****************************************************************//**
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Get block size from fil node
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@return block size*/
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UNIV_INLINE
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ulint
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fil_node_get_block_size(
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fil_node_t* node); /*!< in: Node where to get block
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size */
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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*/
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UNIV_INLINE
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ibool
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fil_page_is_compressed(
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/*===================*/
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byte* buf); /*!< in: page */
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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*/
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UNIV_INLINE
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ibool
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fil_page_is_compressed_encrypted(
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/*=============================*/
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byte* buf); /*!< in: page */
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/*******************************************************************//**
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Find out wheather the page is page compressed with lzo method
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@return true if page is page compressed with lzo method*/
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UNIV_INLINE
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ibool
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fil_page_is_lzo_compressed(
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/*=======================*/
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byte* buf); /*!< in: page */
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#endif
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