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2877c5ecc2
This patch ports the work that facebook has performed to make innochecksum handle compressed tables. the basic idea is to use actual innodb-code to perform checksum verification rather than duplicating in innochecksum.cc. to make this work, innodb code has been annotated with lots of #ifndef UNIV_INNOCHECKSUM so that it can be compiled outside of storage/innobase. A new testcase is also added that verifies that innochecksum works on compressed/non-compressed tables. Merged from commit fabc79d2ea976c4ff5b79bfe913e6bc03ef69d42 from https://code.google.com/p/google-mysql/ The actual steps to produce this patch are: take innochecksum from 5.6.14 apply changes in innodb from facebook patches needed to make innochecksum compile apply changes in innochecksum from facebook patches add handcrafted testcase The referenced facebook patches used are:91e25120e7847fe76ea51135628a5a4dbf7c240c
554 lines
20 KiB
C
554 lines
20 KiB
C
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/*****************************************************************************
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Copyright (c) 2005, 2013, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2012, Facebook Inc.
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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 Street, Suite 500, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/page0zip.h
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Compressed page interface
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Created June 2005 by Marko Makela
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*******************************************************/
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#ifndef page0zip_h
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#define page0zip_h
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#ifdef UNIV_MATERIALIZE
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# undef UNIV_INLINE
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# define UNIV_INLINE
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#endif
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#include "page0types.h"
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#include "buf0types.h"
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#ifndef UNIV_INNOCHECKSUM
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#include "mtr0types.h"
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#include "dict0types.h"
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#include "srv0srv.h"
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#include "trx0types.h"
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#include "mem0mem.h"
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#endif /* !UNIV_INNOCHECKSUM */
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/* Compression level to be used by zlib. Settable by user. */
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extern uint page_zip_level;
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/* Default compression level. */
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#define DEFAULT_COMPRESSION_LEVEL 6
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/* Whether or not to log compressed page images to avoid possible
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compression algorithm changes in zlib. */
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extern my_bool page_zip_log_pages;
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#ifndef UNIV_INNOCHECKSUM
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/**********************************************************************//**
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Determine the size of a compressed page in bytes.
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@return size in bytes */
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UNIV_INLINE
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ulint
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page_zip_get_size(
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/*==============*/
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const page_zip_des_t* page_zip) /*!< in: compressed page */
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__attribute__((nonnull, pure));
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/**********************************************************************//**
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Set the size of a compressed page in bytes. */
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UNIV_INLINE
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void
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page_zip_set_size(
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/*==============*/
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page_zip_des_t* page_zip, /*!< in/out: compressed page */
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ulint size); /*!< in: size in bytes */
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#ifndef UNIV_HOTBACKUP
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/**********************************************************************//**
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Determine if a record is so big that it needs to be stored externally.
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@return FALSE if the entire record can be stored locally on the page */
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UNIV_INLINE
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ibool
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page_zip_rec_needs_ext(
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/*===================*/
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ulint rec_size, /*!< in: length of the record in bytes */
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ulint comp, /*!< in: nonzero=compact format */
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ulint n_fields, /*!< in: number of fields in the record;
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ignored if zip_size == 0 */
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ulint zip_size) /*!< in: compressed page size in bytes, or 0 */
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__attribute__((const));
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/**********************************************************************//**
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Determine the guaranteed free space on an empty page.
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@return minimum payload size on the page */
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UNIV_INTERN
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ulint
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page_zip_empty_size(
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/*================*/
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ulint n_fields, /*!< in: number of columns in the index */
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ulint zip_size) /*!< in: compressed page size in bytes */
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__attribute__((const));
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#endif /* !UNIV_HOTBACKUP */
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/**********************************************************************//**
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Initialize a compressed page descriptor. */
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UNIV_INLINE
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void
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page_zip_des_init(
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/*==============*/
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page_zip_des_t* page_zip); /*!< in/out: compressed page
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descriptor */
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/**********************************************************************//**
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Configure the zlib allocator to use the given memory heap. */
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UNIV_INTERN
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void
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page_zip_set_alloc(
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/*===============*/
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void* stream, /*!< in/out: zlib stream */
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mem_heap_t* heap); /*!< in: memory heap to use */
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#endif /* !UNIV_INNOCHECKSUM */
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/**********************************************************************//**
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Compress a page.
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@return TRUE on success, FALSE on failure; page_zip will be left
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intact on failure. */
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UNIV_INTERN
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ibool
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page_zip_compress(
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/*==============*/
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page_zip_des_t* page_zip,/*!< in: size; out: data, n_blobs,
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m_start, m_end, m_nonempty */
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const page_t* page, /*!< in: uncompressed page */
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dict_index_t* index, /*!< in: index of the B-tree node */
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ulint level, /*!< in: compression level */
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mtr_t* mtr) /*!< in: mini-transaction, or NULL */
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__attribute__((nonnull(1,2,3)));
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/**********************************************************************//**
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Decompress a page. This function should tolerate errors on the compressed
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page. Instead of letting assertions fail, it will return FALSE if an
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inconsistency is detected.
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@return TRUE on success, FALSE on failure */
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UNIV_INTERN
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ibool
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page_zip_decompress(
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/*================*/
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page_zip_des_t* page_zip,/*!< in: data, ssize;
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out: m_start, m_end, m_nonempty, n_blobs */
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page_t* page, /*!< out: uncompressed page, may be trashed */
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ibool all) /*!< in: TRUE=decompress the whole page;
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FALSE=verify but do not copy some
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page header fields that should not change
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after page creation */
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__attribute__((nonnull(1,2)));
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#ifndef UNIV_INNOCHECKSUM
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#ifdef UNIV_DEBUG
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/**********************************************************************//**
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Validate a compressed page descriptor.
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@return TRUE if ok */
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UNIV_INLINE
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ibool
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page_zip_simple_validate(
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/*=====================*/
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const page_zip_des_t* page_zip); /*!< in: compressed page
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descriptor */
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#endif /* UNIV_DEBUG */
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#endif /* !UNIV_INNOCHECKSUM */
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#ifdef UNIV_ZIP_DEBUG
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/**********************************************************************//**
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Check that the compressed and decompressed pages match.
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@return TRUE if valid, FALSE if not */
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UNIV_INTERN
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ibool
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page_zip_validate_low(
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/*==================*/
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const page_zip_des_t* page_zip,/*!< in: compressed page */
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const page_t* page, /*!< in: uncompressed page */
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const dict_index_t* index, /*!< in: index of the page, if known */
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ibool sloppy) /*!< in: FALSE=strict,
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TRUE=ignore the MIN_REC_FLAG */
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__attribute__((nonnull(1,2)));
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/**********************************************************************//**
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Check that the compressed and decompressed pages match. */
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UNIV_INTERN
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ibool
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page_zip_validate(
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/*==============*/
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const page_zip_des_t* page_zip,/*!< in: compressed page */
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const page_t* page, /*!< in: uncompressed page */
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const dict_index_t* index) /*!< in: index of the page, if known */
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__attribute__((nonnull(1,2)));
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#endif /* UNIV_ZIP_DEBUG */
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#ifndef UNIV_INNOCHECKSUM
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/**********************************************************************//**
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Determine how big record can be inserted without recompressing the page.
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@return a positive number indicating the maximum size of a record
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whose insertion is guaranteed to succeed, or zero or negative */
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UNIV_INLINE
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lint
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page_zip_max_ins_size(
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/*==================*/
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const page_zip_des_t* page_zip,/*!< in: compressed page */
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ibool is_clust)/*!< in: TRUE if clustered index */
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__attribute__((nonnull, pure));
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/**********************************************************************//**
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Determine if enough space is available in the modification log.
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@return TRUE if page_zip_write_rec() will succeed */
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UNIV_INLINE
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ibool
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page_zip_available(
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/*===============*/
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const page_zip_des_t* page_zip,/*!< in: compressed page */
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ibool is_clust,/*!< in: TRUE if clustered index */
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ulint length, /*!< in: combined size of the record */
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ulint create) /*!< in: nonzero=add the record to
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the heap */
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__attribute__((nonnull, pure));
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/**********************************************************************//**
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Write data to the uncompressed header portion of a page. The data must
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already have been written to the uncompressed page. */
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UNIV_INLINE
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void
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page_zip_write_header(
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/*==================*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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const byte* str, /*!< in: address on the uncompressed page */
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ulint length, /*!< in: length of the data */
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mtr_t* mtr) /*!< in: mini-transaction, or NULL */
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__attribute__((nonnull(1,2)));
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/**********************************************************************//**
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Write an entire record on the compressed page. The data must already
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have been written to the uncompressed page. */
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UNIV_INTERN
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void
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page_zip_write_rec(
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/*===============*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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const byte* rec, /*!< in: record being written */
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dict_index_t* index, /*!< in: the index the record belongs to */
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const ulint* offsets,/*!< in: rec_get_offsets(rec, index) */
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ulint create) /*!< in: nonzero=insert, zero=update */
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__attribute__((nonnull));
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/***********************************************************//**
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Parses a log record of writing a BLOB pointer of a record.
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@return end of log record or NULL */
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UNIV_INTERN
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byte*
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page_zip_parse_write_blob_ptr(
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/*==========================*/
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byte* ptr, /*!< in: redo log buffer */
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byte* end_ptr,/*!< in: redo log buffer end */
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page_t* page, /*!< in/out: uncompressed page */
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page_zip_des_t* page_zip);/*!< in/out: compressed page */
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/**********************************************************************//**
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Write a BLOB pointer of a record on the leaf page of a clustered index.
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The information must already have been updated on the uncompressed page. */
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UNIV_INTERN
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void
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page_zip_write_blob_ptr(
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/*====================*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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const byte* rec, /*!< in/out: record whose data is being
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written */
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dict_index_t* index, /*!< in: index of the page */
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const ulint* offsets,/*!< in: rec_get_offsets(rec, index) */
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ulint n, /*!< in: column index */
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mtr_t* mtr) /*!< in: mini-transaction handle,
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or NULL if no logging is needed */
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__attribute__((nonnull(1,2,3,4)));
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/***********************************************************//**
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Parses a log record of writing the node pointer of a record.
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@return end of log record or NULL */
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UNIV_INTERN
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byte*
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page_zip_parse_write_node_ptr(
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/*==========================*/
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byte* ptr, /*!< in: redo log buffer */
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byte* end_ptr,/*!< in: redo log buffer end */
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page_t* page, /*!< in/out: uncompressed page */
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page_zip_des_t* page_zip);/*!< in/out: compressed page */
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/**********************************************************************//**
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Write the node pointer of a record on a non-leaf compressed page. */
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UNIV_INTERN
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void
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page_zip_write_node_ptr(
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/*====================*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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byte* rec, /*!< in/out: record */
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ulint size, /*!< in: data size of rec */
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ulint ptr, /*!< in: node pointer */
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mtr_t* mtr) /*!< in: mini-transaction, or NULL */
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__attribute__((nonnull(1,2)));
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/**********************************************************************//**
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Write the trx_id and roll_ptr of a record on a B-tree leaf node page. */
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UNIV_INTERN
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void
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page_zip_write_trx_id_and_roll_ptr(
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/*===============================*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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byte* rec, /*!< in/out: record */
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const ulint* offsets,/*!< in: rec_get_offsets(rec, index) */
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ulint trx_id_col,/*!< in: column number of TRX_ID in rec */
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trx_id_t trx_id, /*!< in: transaction identifier */
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roll_ptr_t roll_ptr)/*!< in: roll_ptr */
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__attribute__((nonnull));
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/**********************************************************************//**
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Write the "deleted" flag of a record on a compressed page. The flag must
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already have been written on the uncompressed page. */
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UNIV_INTERN
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void
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page_zip_rec_set_deleted(
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/*=====================*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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const byte* rec, /*!< in: record on the uncompressed page */
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ulint flag) /*!< in: the deleted flag (nonzero=TRUE) */
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__attribute__((nonnull));
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/**********************************************************************//**
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Write the "owned" flag of a record on a compressed page. The n_owned field
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must already have been written on the uncompressed page. */
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UNIV_INTERN
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void
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page_zip_rec_set_owned(
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/*===================*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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const byte* rec, /*!< in: record on the uncompressed page */
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ulint flag) /*!< in: the owned flag (nonzero=TRUE) */
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__attribute__((nonnull));
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/**********************************************************************//**
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Insert a record to the dense page directory. */
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UNIV_INTERN
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void
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page_zip_dir_insert(
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/*================*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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const byte* prev_rec,/*!< in: record after which to insert */
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const byte* free_rec,/*!< in: record from which rec was
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allocated, or NULL */
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byte* rec); /*!< in: record to insert */
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/**********************************************************************//**
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Shift the dense page directory and the array of BLOB pointers
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when a record is deleted. */
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UNIV_INTERN
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void
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page_zip_dir_delete(
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/*================*/
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page_zip_des_t* page_zip, /*!< in/out: compressed page */
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byte* rec, /*!< in: deleted record */
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const dict_index_t* index, /*!< in: index of rec */
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const ulint* offsets, /*!< in: rec_get_offsets(rec) */
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const byte* free) /*!< in: previous start of
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the free list */
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__attribute__((nonnull(1,2,3,4)));
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/**********************************************************************//**
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Add a slot to the dense page directory. */
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UNIV_INTERN
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void
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page_zip_dir_add_slot(
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/*==================*/
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page_zip_des_t* page_zip, /*!< in/out: compressed page */
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ulint is_clustered) /*!< in: nonzero for clustered index,
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zero for others */
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__attribute__((nonnull));
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/***********************************************************//**
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Parses a log record of writing to the header of a page.
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@return end of log record or NULL */
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UNIV_INTERN
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byte*
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page_zip_parse_write_header(
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/*========================*/
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byte* ptr, /*!< in: redo log buffer */
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byte* end_ptr,/*!< in: redo log buffer end */
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page_t* page, /*!< in/out: uncompressed page */
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page_zip_des_t* page_zip);/*!< in/out: compressed page */
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/**********************************************************************//**
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Write data to the uncompressed header portion of a page. The data must
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already have been written to the uncompressed page.
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However, the data portion of the uncompressed page may differ from
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the compressed page when a record is being inserted in
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page_cur_insert_rec_low(). */
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UNIV_INLINE
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void
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page_zip_write_header(
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/*==================*/
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page_zip_des_t* page_zip,/*!< in/out: compressed page */
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const byte* str, /*!< in: address on the uncompressed page */
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ulint length, /*!< in: length of the data */
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mtr_t* mtr) /*!< in: mini-transaction, or NULL */
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__attribute__((nonnull(1,2)));
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/**********************************************************************//**
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Reorganize and compress a page. This is a low-level operation for
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compressed pages, to be used when page_zip_compress() fails.
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On success, a redo log entry MLOG_ZIP_PAGE_COMPRESS will be written.
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The function btr_page_reorganize() should be preferred whenever possible.
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IMPORTANT: if page_zip_reorganize() is invoked on a leaf page of a
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non-clustered index, the caller must update the insert buffer free
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bits in the same mini-transaction in such a way that the modification
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will be redo-logged.
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@return TRUE on success, FALSE on failure; page_zip will be left
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intact on failure, but page will be overwritten. */
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UNIV_INTERN
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ibool
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page_zip_reorganize(
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/*================*/
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buf_block_t* block, /*!< in/out: page with compressed page;
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on the compressed page, in: size;
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out: data, n_blobs,
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m_start, m_end, m_nonempty */
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dict_index_t* index, /*!< in: index of the B-tree node */
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mtr_t* mtr) /*!< in: mini-transaction */
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__attribute__((nonnull));
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#endif /* !UNIV_INNOCHECKSUM */
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#ifndef UNIV_HOTBACKUP
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/**********************************************************************//**
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Copy the records of a page byte for byte. Do not copy the page header
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or trailer, except those B-tree header fields that are directly
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related to the storage of records. Also copy PAGE_MAX_TRX_ID.
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NOTE: The caller must update the lock table and the adaptive hash index. */
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UNIV_INTERN
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void
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page_zip_copy_recs(
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/*===============*/
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page_zip_des_t* page_zip, /*!< out: copy of src_zip
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(n_blobs, m_start, m_end,
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m_nonempty, data[0..size-1]) */
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page_t* page, /*!< out: copy of src */
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const page_zip_des_t* src_zip, /*!< in: compressed page */
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const page_t* src, /*!< in: page */
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dict_index_t* index, /*!< in: index of the B-tree */
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mtr_t* mtr) /*!< in: mini-transaction */
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__attribute__((nonnull));
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#endif /* !UNIV_HOTBACKUP */
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/**********************************************************************//**
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Parses a log record of compressing an index page.
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@return end of log record or NULL */
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UNIV_INTERN
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byte*
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page_zip_parse_compress(
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/*====================*/
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byte* ptr, /*!< in: buffer */
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byte* end_ptr,/*!< in: buffer end */
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page_t* page, /*!< out: uncompressed page */
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page_zip_des_t* page_zip)/*!< out: compressed page */
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__attribute__((nonnull(1,2)));
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/**********************************************************************//**
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Calculate the compressed page checksum.
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@return page checksum */
|
|
UNIV_INTERN
|
|
ulint
|
|
page_zip_calc_checksum(
|
|
/*===================*/
|
|
const void* data, /*!< in: compressed page */
|
|
ulint size, /*!< in: size of compressed page */
|
|
srv_checksum_algorithm_t algo) /*!< in: algorithm to use */
|
|
__attribute__((nonnull));
|
|
|
|
/**********************************************************************//**
|
|
Verify a compressed page's checksum.
|
|
@return TRUE if the stored checksum is valid according to the value of
|
|
innodb_checksum_algorithm */
|
|
UNIV_INTERN
|
|
ibool
|
|
page_zip_verify_checksum(
|
|
/*=====================*/
|
|
const void* data, /*!< in: compressed page */
|
|
ulint size); /*!< in: size of compressed page */
|
|
|
|
#ifndef UNIV_INNOCHECKSUM
|
|
/**********************************************************************//**
|
|
Write a log record of compressing an index page without the data on the page. */
|
|
UNIV_INLINE
|
|
void
|
|
page_zip_compress_write_log_no_data(
|
|
/*================================*/
|
|
ulint level, /*!< in: compression level */
|
|
const page_t* page, /*!< in: page that is compressed */
|
|
dict_index_t* index, /*!< in: index */
|
|
mtr_t* mtr); /*!< in: mtr */
|
|
/**********************************************************************//**
|
|
Parses a log record of compressing an index page without the data.
|
|
@return end of log record or NULL */
|
|
UNIV_INLINE
|
|
byte*
|
|
page_zip_parse_compress_no_data(
|
|
/*============================*/
|
|
byte* ptr, /*!< in: buffer */
|
|
byte* end_ptr, /*!< in: buffer end */
|
|
page_t* page, /*!< in: uncompressed page */
|
|
page_zip_des_t* page_zip, /*!< out: compressed page */
|
|
dict_index_t* index) /*!< in: index */
|
|
__attribute__((nonnull(1,2)));
|
|
|
|
/**********************************************************************//**
|
|
Reset the counters used for filling
|
|
INFORMATION_SCHEMA.innodb_cmp_per_index. */
|
|
UNIV_INLINE
|
|
void
|
|
page_zip_reset_stat_per_index();
|
|
/*===========================*/
|
|
|
|
#endif /* !UNIV_INNOCHECKSUM */
|
|
|
|
#ifndef UNIV_HOTBACKUP
|
|
/** Check if a pointer to an uncompressed page matches a compressed page.
|
|
When we IMPORT a tablespace the blocks and accompanying frames are allocted
|
|
from outside the buffer pool.
|
|
@param ptr pointer to an uncompressed page frame
|
|
@param page_zip compressed page descriptor
|
|
@return TRUE if ptr and page_zip refer to the same block */
|
|
# define PAGE_ZIP_MATCH(ptr, page_zip) \
|
|
(((page_zip)->m_external \
|
|
&& (page_align(ptr) + UNIV_PAGE_SIZE == (page_zip)->data)) \
|
|
|| buf_frame_get_page_zip(ptr) == (page_zip))
|
|
#else /* !UNIV_HOTBACKUP */
|
|
/** Check if a pointer to an uncompressed page matches a compressed page.
|
|
@param ptr pointer to an uncompressed page frame
|
|
@param page_zip compressed page descriptor
|
|
@return TRUE if ptr and page_zip refer to the same block */
|
|
# define PAGE_ZIP_MATCH(ptr, page_zip) \
|
|
(page_align(ptr) + UNIV_PAGE_SIZE == (page_zip)->data)
|
|
#endif /* !UNIV_HOTBACKUP */
|
|
|
|
#ifdef UNIV_MATERIALIZE
|
|
# undef UNIV_INLINE
|
|
# define UNIV_INLINE UNIV_INLINE_ORIGINAL
|
|
#endif
|
|
|
|
#ifndef UNIV_INNOCHECKSUM
|
|
#ifndef UNIV_NONINL
|
|
# include "page0zip.ic"
|
|
#endif
|
|
#endif /* !UNIV_INNOCHECKSUM */
|
|
|
|
#endif /* page0zip_h */
|