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f5eb37129f
fil_page_decompress(): Replaces fil_decompress_page(). Allow the caller detect errors. Remove duplicated code. Use the "safe" instead of "fast" variants of decompression routines. fil_page_compress(): Replaces fil_compress_page(). The length of the input buffer always was srv_page_size (innodb_page_size). Remove printouts, and remove the fil_space_t* parameter. buf_tmp_buffer_t::reserved: Make private; the accessors acquire() and release() will use atomic memory access. buf_pool_reserve_tmp_slot(): Make static. Remove the second parameter. Do not acquire any mutex. Remove the allocation of the buffers. buf_tmp_reserve_crypt_buf(), buf_tmp_reserve_compression_buf(): Refactored away from buf_pool_reserve_tmp_slot(). buf_page_decrypt_after_read(): Make static, and simplify the logic. Use the encryption buffer also for decompressing. buf_page_io_complete(), buf_dblwr_process(): Check more failures. fil_space_encrypt(): Simplify the debug checks. fil_space_t::printed_compression_failure: Remove. fil_get_compression_alg_name(): Remove. fil_iterate(): Allocate a buffer for compression and decompression only once, instead of allocating and freeing it for every page that uses compression, during IMPORT TABLESPACE. fil_node_get_space_id(), fil_page_is_index_page(), fil_page_is_lzo_compressed(): Remove (unused code).
74 lines
2.7 KiB
Text
74 lines
2.7 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 02110-1301 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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Determine the tablespace is using atomic writes from dict_table_t::flags.
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@return true if atomic writes is used, false if not */
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UNIV_INLINE
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atomic_writes_t
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fsp_flags_get_atomic_writes(
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/*========================*/
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ulint flags) /*!< in: tablespace flags */
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{
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return((atomic_writes_t)FSP_FLAGS_GET_ATOMIC_WRITES(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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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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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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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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return(mach_read_from_2(buf+FIL_PAGE_TYPE) == FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED);
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}
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