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a7d68e7a0f
Back in 2006 or 2007, when MySQL AB and Innobase Oy existed as separately controlled entities (Innobase had been acquired by Oracle Corporation), MySQL 5.1 introduced a storage engine plugin interface and Oracle made use of it by distributing a separate InnoDB Plugin, which would contain some more bug fixes and improvements, compared to the version of InnoDB that was statically linked with the mysqld server that was distributed by MySQL AB. The built-in InnoDB would export global symbols, which would clash with the symbols of the dynamic InnoDB Plugin (which was supposed to override the built-in one when present). The solution to this problem was to declare all global symbols with UNIV_INTERN, so that they would get the GCC function attribute that specifies hidden visibility. Later, in MariaDB Server, something based on Percona XtraDB (a fork of MySQL InnoDB) became the statically linked implementation, and something closer to MySQL InnoDB was available as a dynamic plugin. Starting with version 10.2, MariaDB Server includes only one InnoDB implementation, and hence any reason to have the UNIV_INTERN definition was lost. btr_get_size_and_reserved(): Move to the same compilation unit with the only caller. innodb_set_buf_pool_size(): Remove. Modify innobase_buffer_pool_size directly. fil_crypt_calculate_checksum(): Merge to the only caller. ha_innobase::innobase_reset_autoinc(): Merge to the only caller. thd_query_start_micro(): Remove. Call thd_start_utime() directly.
65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
/*****************************************************************************
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Copyright (C) 2013, 2014 Facebook, Inc. All Rights Reserved.
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Copyright (C) 2014, 2021, 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 Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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#ifndef btr0defragment_h
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#define btr0defragment_h
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#include "btr0pcur.h"
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/* Max number of pages to consider at once during defragmentation. */
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#define BTR_DEFRAGMENT_MAX_N_PAGES 32
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/** stats in btr_defragment */
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extern Atomic_counter<ulint> btr_defragment_compression_failures;
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extern Atomic_counter<ulint> btr_defragment_failures;
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extern Atomic_counter<ulint> btr_defragment_count;
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/******************************************************************//**
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Initialize defragmentation. */
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void
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btr_defragment_init(void);
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/******************************************************************//**
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Shutdown defragmentation. */
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void
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btr_defragment_shutdown();
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/******************************************************************//**
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Check whether the given index is in btr_defragment_wq. */
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bool
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btr_defragment_find_index(
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dict_index_t* index); /*!< Index to find. */
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/** Defragment an index.
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@param pcur persistent cursor
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@param thd current session, for checking thd_killed()
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@return whether the operation was interrupted */
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bool btr_defragment_add_index(btr_pcur_t *pcur, THD *thd);
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/******************************************************************//**
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When table is dropped, this function is called to mark a table as removed in
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btr_efragment_wq. The difference between this function and the remove_index
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function is this will not NULL the event. */
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void
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btr_defragment_remove_table(
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dict_table_t* table); /*!< Index to be removed. */
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/*********************************************************************//**
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Check whether we should save defragmentation statistics to persistent storage.*/
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void btr_defragment_save_defrag_stats_if_needed(dict_index_t *index);
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/* Stop defragmentation.*/
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void btr_defragment_end();
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extern bool btr_defragment_active;
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#endif
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