mirror of
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d118d29eb3
------------------------------------------------------------------------ r4008 | vasil | 2009-01-20 17:01:08 +0200 (Tue, 20 Jan 2009) | 4 lines branches/zip: Add ChangeLog entries for the bugfixes in r4004 and r4005. ------------------------------------------------------------------------ r4027 | marko | 2009-01-23 11:04:49 +0200 (Fri, 23 Jan 2009) | 1 line branches/zip: Remove some redundant #include statements. ------------------------------------------------------------------------ r4028 | marko | 2009-01-23 11:26:10 +0200 (Fri, 23 Jan 2009) | 13 lines branches/zip: Enclose some more unused code in #ifdef UNIV_LOG_ARCHIVE. This will help trim the dependencies of InnoDB Hot Backup. recv_recovery_from_checkpoint_start(): Rename to recv_recovery_from_checkpoint_start_func(), and remove the two first parameters unless UNIV_LOG_ARCHIVE is defined. Define and use the auxiliary macros TYPE_CHECKPOINT and LIMIT_LSN in the function. struct recv_sys_struct: Remove archive_group unless UNIV_LOG_ARCHIVE is defined. Do not define LOG_ARCHIVE unless UNIV_LOG_ARCHIVE is defined. ------------------------------------------------------------------------ r4029 | marko | 2009-01-23 14:07:38 +0200 (Fri, 23 Jan 2009) | 1 line branches/zip: Remove some redundant #include directives. ------------------------------------------------------------------------ r4030 | marko | 2009-01-23 15:31:36 +0200 (Fri, 23 Jan 2009) | 2 lines branches/zip: buf_page_get_gen(): Remove the unused mode BUF_GET_NOWAIT. This was noticed while investigating Issue #160. ------------------------------------------------------------------------ r4033 | marko | 2009-01-23 15:49:04 +0200 (Fri, 23 Jan 2009) | 16 lines branches/zip: Merge revisions 4005:4032 from branches/5.1: ------------------------------------------------------------------------ r4032 | marko | 2009-01-23 15:43:51 +0200 (Fri, 23 Jan 2009) | 10 lines branches/5.1: Merge r4031 from branches/5.0: btr_search_drop_page_hash_when_freed(): Check if buf_page_get_gen() returns NULL. The page may have been evicted from the buffer pool between buf_page_peek_if_search_hashed() and buf_page_get_gen(), because the buffer pool mutex will be released between these two calls. (Bug #42279, Issue #160) rb://82 approved by Heikki Tuuri ------------------------------------------------------------------------ ------------------------------------------------------------------------ r4034 | marko | 2009-01-26 16:16:39 +0200 (Mon, 26 Jan 2009) | 2 lines branches/zip: buf_page_get_gen(): Fix a "possibly uninitialized" warning that was introduced in r4030. ------------------------------------------------------------------------ r4036 | marko | 2009-01-26 22:33:20 +0200 (Mon, 26 Jan 2009) | 22 lines branches/zip: In r988, the function buf_block_align() was enclosed within UNIV_DEBUG. The two remaining callers in non-debug builds, btr_search_guess_on_hash() and btr_search_validate(), were rewritten to call buf_page_hash_get(). To implement support for a resizeable buffer pool, the function buf_block_align() had been rewritten to perform a page hash lookup in the buffer pool. The caller was also made responsible for holding the buffer pool mutex. Because the page hash lookup is expensive and it has to be done while holding the buffer pool mutex, implement buf_block_align() by pointer arithmetics again, and make btr_search_guess_on_hash() call it. Note that this will have to be adjusted if the interface to the resizeable buffer pool is actually implemented. rb://83 approved by Heikki Tuuri, to address Issue #161. As a deviation from the approved patch, this patch also makes btr_search_validate() (invoked by CHECK TABLE) check that buf_pool->page_hash is consistent with buf_block_align(). ------------------------------------------------------------------------ r4039 | vasil | 2009-01-27 08:04:17 +0200 (Tue, 27 Jan 2009) | 5 lines branches/zip: Adjust the paths in innodb_file_per_table.diff with a recent rename of the test/result files in the MySQL tree. ------------------------------------------------------------------------ r4042 | marko | 2009-01-27 10:05:24 +0200 (Tue, 27 Jan 2009) | 2 lines branches/zip: buf_LRU_invalidate_tablespace(): Fix a race condition: read zip_size while still holding block_mutex. ------------------------------------------------------------------------ r4045 | marko | 2009-01-28 00:31:17 +0200 (Wed, 28 Jan 2009) | 8 lines branches/zip: btr_search_validate(): Fix a bogus UNIV_DEBUG assertion failure that was accidentally introduced in r4036. Instead of calling buf_block_get_frame(), which asserts that the block must be buffer-fixed, access block->frame directly. That is safe, because changes of block->page.state are protected by the buffer pool mutex, which we are holding. This bug was reported by Michael. ------------------------------------------------------------------------ r4046 | marko | 2009-01-28 00:33:20 +0200 (Wed, 28 Jan 2009) | 2 lines branches/zip: Revert the change to univ.i that was accidentally committed in r4045. ------------------------------------------------------------------------ r4047 | marko | 2009-01-28 00:46:13 +0200 (Wed, 28 Jan 2009) | 6 lines branches/zip: btr_search_validate(): Fix an assertion failure that was introduced in r4036. Do not call buf_block_get_space(), buf_block_get_page_no() unless the block state is BUF_BLOCK_FILE_PAGE. This bug was reported by Michael. ------------------------------------------------------------------------ r4050 | vasil | 2009-01-28 08:21:44 +0200 (Wed, 28 Jan 2009) | 5 lines branches/zip: Adjust the paths in innodb_lock_wait_timeout.diff with a recent rename of the test/result files in the MySQL tree. ------------------------------------------------------------------------ r4051 | marko | 2009-01-28 14:35:49 +0200 (Wed, 28 Jan 2009) | 1 line branches/zip: trx0sys.ic: Remove unnecessary #include <data0type.h>. ------------------------------------------------------------------------ r4052 | marko | 2009-01-28 15:21:45 +0200 (Wed, 28 Jan 2009) | 5 lines branches/zip: Enclose some functions inside #ifdef UNIV_HOTBACKUP: ut_sprintf_timestamp_without_extra_chars(), ut_get_year_month_day(), log_reset_first_header_and_checkpoint(): These functions are only used in InnoDB Hot Backup. ------------------------------------------------------------------------ r4056 | calvin | 2009-01-29 03:06:41 +0200 (Thu, 29 Jan 2009) | 33 lines branches/zip: Merge revisions 4032:4035 from branches/5.1 All InnoDB related tests passed on Windows, except known failure in partition_innodb_semi_consistent. The inadvertent change to btr0sea.c in this commit is reverted in r4060. ------------------------------------------------------------------------ r4035 | vasil | 2009-01-26 09:26:25 -0600 (Mon, 26 Jan 2009) | 23 lines branches/5.1: Merge a change from MySQL: ------------------------------------------------------------ revno: 2646.161.4 committer: Tatiana A. Nurnberg <azundris@mysql.com> branch nick: 51-31177v2 timestamp: Mon 2009-01-12 06:32:49 +0100 message: Bug#31177: Server variables can't be set to their current values Bounds-checks and blocksize corrections were applied to user-input, but constants in the server were trusted implicitly. If these values did not actually meet the requirements, the user could not set change a variable, then set it back to the (wonky) factory default or maximum by explicitly specifying it (SET <var>=<value> vs SET <var>=DEFAULT). Now checks also apply to the server's presets. Wonky values and maxima get corrected at startup. Consequently all non-offsetted values the user sees are valid, and users can set the variable to that exact value if they so desire. ------------------------------------------------------------------------ r4060 | marko | 2009-01-29 09:39:04 +0200 (Thu, 29 Jan 2009) | 1 line branches/zip: btr0sea.c: Revert the inadvertent change made in r4056. ------------------------------------------------------------------------
10049 lines
283 KiB
C++
10049 lines
283 KiB
C++
/* Copyright (C) 2000-2005 MySQL AB & Innobase Oy
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* TODO list for the InnoDB handler in 5.0:
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- Remove the flag trx->active_trans and look at trx->conc_state
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- fix savepoint functions to use savepoint storage area
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- Find out what kind of problems the OS X case-insensitivity causes to
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table and database names; should we 'normalize' the names like we do
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in Windows?
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*/
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#ifdef USE_PRAGMA_IMPLEMENTATION
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#pragma implementation // gcc: Class implementation
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#endif
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#include <mysql_priv.h>
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#include <m_ctype.h>
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#include <mysys_err.h>
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#include <mysql/plugin.h>
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/* Include necessary InnoDB headers */
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extern "C" {
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#include "../storage/innobase/include/univ.i"
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#include "../storage/innobase/include/btr0sea.h"
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#include "../storage/innobase/include/os0file.h"
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#include "../storage/innobase/include/os0thread.h"
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#include "../storage/innobase/include/srv0start.h"
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#include "../storage/innobase/include/srv0srv.h"
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#include "../storage/innobase/include/trx0roll.h"
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#include "../storage/innobase/include/trx0trx.h"
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#include "../storage/innobase/include/trx0sys.h"
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#include "../storage/innobase/include/mtr0mtr.h"
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#include "../storage/innobase/include/row0ins.h"
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#include "../storage/innobase/include/row0mysql.h"
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#include "../storage/innobase/include/row0sel.h"
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#include "../storage/innobase/include/row0upd.h"
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#include "../storage/innobase/include/log0log.h"
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#include "../storage/innobase/include/lock0lock.h"
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#include "../storage/innobase/include/dict0crea.h"
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#include "../storage/innobase/include/btr0cur.h"
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#include "../storage/innobase/include/btr0btr.h"
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#include "../storage/innobase/include/fsp0fsp.h"
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#include "../storage/innobase/include/sync0sync.h"
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#include "../storage/innobase/include/fil0fil.h"
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#include "../storage/innobase/include/trx0xa.h"
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#include "../storage/innobase/include/row0merge.h"
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#include "../storage/innobase/include/thr0loc.h"
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#include "../storage/innobase/include/dict0boot.h"
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#include "../storage/innobase/include/ha_prototypes.h"
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#include "../storage/innobase/include/ut0mem.h"
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#include "../storage/innobase/include/ibuf0ibuf.h"
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}
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#include "ha_innodb.h"
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#include "i_s.h"
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#include "handler0vars.h"
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#ifndef MYSQL_SERVER
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/* This is needed because of Bug #3596. Let us hope that pthread_mutex_t
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is defined the same in both builds: the MySQL server and the InnoDB plugin. */
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extern pthread_mutex_t LOCK_thread_count;
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#if MYSQL_VERSION_ID < 50124
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/* this is defined in mysql_priv.h inside #ifdef MYSQL_SERVER
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but we need it here */
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bool check_global_access(THD *thd, ulong want_access);
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#endif /* MYSQL_VERSION_ID < 50124 */
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#endif /* MYSQL_SERVER */
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/** to protect innobase_open_files */
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static pthread_mutex_t innobase_share_mutex;
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/** to force correct commit order in binlog */
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static pthread_mutex_t prepare_commit_mutex;
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static ulong commit_threads = 0;
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static pthread_mutex_t commit_threads_m;
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static pthread_cond_t commit_cond;
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static pthread_mutex_t commit_cond_m;
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static bool innodb_inited = 0;
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#define INSIDE_HA_INNOBASE_CC
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/* In the Windows plugin, the return value of current_thd is
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undefined. Map it to NULL. */
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#if defined MYSQL_DYNAMIC_PLUGIN && defined __WIN__
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# undef current_thd
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# define current_thd NULL
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# define EQ_CURRENT_THD(thd) TRUE
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#else /* MYSQL_DYNAMIC_PLUGIN && __WIN__ */
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# define EQ_CURRENT_THD(thd) ((thd) == current_thd)
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#endif /* MYSQL_DYNAMIC_PLUGIN && __WIN__ */
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#ifdef MYSQL_DYNAMIC_PLUGIN
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/* These must be weak global variables in the dynamic plugin. */
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struct handlerton* innodb_hton_ptr;
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#ifdef __WIN__
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struct st_mysql_plugin* builtin_innobase_plugin_ptr;
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#else
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int builtin_innobase_plugin;
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#endif /* __WIN__ */
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/********************************************************************
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Copy InnoDB system variables from the static InnoDB to the dynamic
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plugin. */
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static
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bool
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innodb_plugin_init(void);
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/*====================*/
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/* out: TRUE if the dynamic InnoDB plugin should start */
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#else /* MYSQL_DYNAMIC_PLUGIN */
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/* This must be a global variable in the statically linked InnoDB. */
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struct handlerton* innodb_hton_ptr = NULL;
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#endif /* MYSQL_DYNAMIC_PLUGIN */
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static const long AUTOINC_OLD_STYLE_LOCKING = 0;
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static const long AUTOINC_NEW_STYLE_LOCKING = 1;
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static const long AUTOINC_NO_LOCKING = 2;
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static long innobase_mirrored_log_groups, innobase_log_files_in_group,
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innobase_log_buffer_size,
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innobase_additional_mem_pool_size, innobase_file_io_threads,
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innobase_force_recovery, innobase_open_files,
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innobase_autoinc_lock_mode;
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static long long innobase_buffer_pool_size, innobase_log_file_size;
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/* The default values for the following char* start-up parameters
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are determined in innobase_init below: */
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static char* innobase_data_home_dir = NULL;
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static char* innobase_data_file_path = NULL;
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static char* innobase_log_group_home_dir = NULL;
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static char* innobase_file_format_name = NULL;
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static char* innobase_change_buffering = NULL;
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/* Note: This variable can be set to on/off and any of the supported
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file formats in the configuration file, but can only be set to any
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of the supported file formats during runtime. */
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static char* innobase_file_format_check = NULL;
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/* The following has a misleading name: starting from 4.0.5, this also
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affects Windows: */
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static char* innobase_unix_file_flush_method = NULL;
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/* Below we have boolean-valued start-up parameters, and their default
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values */
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static ulong innobase_fast_shutdown = 1;
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#ifdef UNIV_LOG_ARCHIVE
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static my_bool innobase_log_archive = FALSE;
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static char* innobase_log_arch_dir = NULL;
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#endif /* UNIV_LOG_ARCHIVE */
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static my_bool innobase_use_doublewrite = TRUE;
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static my_bool innobase_use_checksums = TRUE;
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static my_bool innobase_locks_unsafe_for_binlog = FALSE;
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static my_bool innobase_rollback_on_timeout = FALSE;
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static my_bool innobase_create_status_file = FALSE;
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static my_bool innobase_stats_on_metadata = TRUE;
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static my_bool innobase_adaptive_hash_index = TRUE;
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static char* internal_innobase_data_file_path = NULL;
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static char* innodb_version_str = (char*) INNODB_VERSION_STR;
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/* The following counter is used to convey information to InnoDB
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about server activity: in selects it is not sensible to call
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srv_active_wake_master_thread after each fetch or search, we only do
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it every INNOBASE_WAKE_INTERVAL'th step. */
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#define INNOBASE_WAKE_INTERVAL 32
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static ulong innobase_active_counter = 0;
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static hash_table_t* innobase_open_tables;
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#ifdef __NETWARE__ /* some special cleanup for NetWare */
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bool nw_panic = FALSE;
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#endif
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/** Allowed values of innodb_change_buffering */
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static const char* innobase_change_buffering_values[IBUF_USE_ALL + 1] = {
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"none", /* IBUF_USE_NONE */
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"inserts", /* IBUF_USE_INSERT */
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"deletes", /* IBUF_USE_DELETE_MARK */
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"changes", /* IBUF_USE_INSERT_DELETE_MARK */
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"purges", /* IBUF_USE_DELETE */
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"all" /* IBUF_USE_ALL */
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};
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static INNOBASE_SHARE *get_share(const char *table_name);
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static void free_share(INNOBASE_SHARE *share);
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static int innobase_close_connection(handlerton *hton, THD* thd);
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static int innobase_commit(handlerton *hton, THD* thd, bool all);
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static int innobase_rollback(handlerton *hton, THD* thd, bool all);
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static int innobase_rollback_to_savepoint(handlerton *hton, THD* thd,
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void *savepoint);
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static int innobase_savepoint(handlerton *hton, THD* thd, void *savepoint);
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static int innobase_release_savepoint(handlerton *hton, THD* thd,
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void *savepoint);
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static handler *innobase_create_handler(handlerton *hton,
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TABLE_SHARE *table,
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MEM_ROOT *mem_root);
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/****************************************************************
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Validate the file format name and return its corresponding id. */
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static
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uint
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innobase_file_format_name_lookup(
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/*=============================*/
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/* out: valid file format id */
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const char* format_name); /* in: pointer to file format
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name */
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/****************************************************************
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Validate the file format check config parameters, as a side effect it
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sets the srv_check_file_format_at_startup variable. */
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static
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bool
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innobase_file_format_check_on_off(
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/*==============================*/
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/* out: true if one of
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"on" or "off" */
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const char* format_check); /* in: parameter value */
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/****************************************************************
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Validate the file format check config parameters, as a side effect it
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sets the srv_check_file_format_at_startup variable. */
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static
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bool
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innobase_file_format_check_validate(
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/*================================*/
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/* out: true if valid
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config value */
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const char* format_check); /* in: parameter value */
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/********************************************************************
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Return alter table flags supported in an InnoDB database. */
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static
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uint
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innobase_alter_table_flags(
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/*=======================*/
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uint flags);
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static const char innobase_hton_name[]= "InnoDB";
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static MYSQL_THDVAR_BOOL(support_xa, PLUGIN_VAR_OPCMDARG,
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"Enable InnoDB support for the XA two-phase commit",
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/* check_func */ NULL, /* update_func */ NULL,
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/* default */ TRUE);
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static MYSQL_THDVAR_BOOL(table_locks, PLUGIN_VAR_OPCMDARG,
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"Enable InnoDB locking in LOCK TABLES",
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/* check_func */ NULL, /* update_func */ NULL,
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/* default */ TRUE);
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static MYSQL_THDVAR_BOOL(strict_mode, PLUGIN_VAR_OPCMDARG,
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"Use strict mode when evaluating create options.",
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NULL, NULL, FALSE);
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static MYSQL_THDVAR_ULONG(lock_wait_timeout, PLUGIN_VAR_RQCMDARG,
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"Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back. Values above 100000000 disable the timeout.",
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NULL, NULL, 50, 1, 1024 * 1024 * 1024, 0);
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static handler *innobase_create_handler(handlerton *hton,
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TABLE_SHARE *table,
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MEM_ROOT *mem_root)
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{
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return new (mem_root) ha_innobase(hton, table);
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}
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/***********************************************************************
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This function is used to prepare X/Open XA distributed transaction */
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static
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int
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innobase_xa_prepare(
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/*================*/
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/* out: 0 or error number */
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handlerton* hton,
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THD* thd, /* in: handle to the MySQL thread of the user
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whose XA transaction should be prepared */
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bool all); /* in: TRUE - commit transaction
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FALSE - the current SQL statement ended */
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/***********************************************************************
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This function is used to recover X/Open XA distributed transactions */
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static
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int
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innobase_xa_recover(
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/*================*/
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/* out: number of prepared transactions
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stored in xid_list */
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handlerton* hton,
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XID* xid_list, /* in/out: prepared transactions */
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uint len); /* in: number of slots in xid_list */
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/***********************************************************************
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This function is used to commit one X/Open XA distributed transaction
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which is in the prepared state */
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static
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int
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innobase_commit_by_xid(
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/*===================*/
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/* out: 0 or error number */
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handlerton* hton,
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XID* xid); /* in: X/Open XA transaction identification */
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/***********************************************************************
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This function is used to rollback one X/Open XA distributed transaction
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which is in the prepared state */
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static
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int
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innobase_rollback_by_xid(
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/*=====================*/
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/* out: 0 or error number */
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handlerton* hton,
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XID *xid); /* in: X/Open XA transaction identification */
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/***********************************************************************
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Create a consistent view for a cursor based on current transaction
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which is created if the corresponding MySQL thread still lacks one.
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This consistent view is then used inside of MySQL when accessing records
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using a cursor. */
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static
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void*
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innobase_create_cursor_view(
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/*========================*/
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/* out: pointer to cursor view or NULL */
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handlerton* hton, /* in: innobase hton */
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THD* thd); /* in: user thread handle */
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/***********************************************************************
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Set the given consistent cursor view to a transaction which is created
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if the corresponding MySQL thread still lacks one. If the given
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consistent cursor view is NULL global read view of a transaction is
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restored to a transaction read view. */
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static
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void
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innobase_set_cursor_view(
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/*=====================*/
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handlerton* hton,
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THD* thd, /* in: user thread handle */
|
|
void* curview);/* in: Consistent cursor view to be set */
|
|
/***********************************************************************
|
|
Close the given consistent cursor view of a transaction and restore
|
|
global read view to a transaction read view. Transaction is created if the
|
|
corresponding MySQL thread still lacks one. */
|
|
static
|
|
void
|
|
innobase_close_cursor_view(
|
|
/*=======================*/
|
|
handlerton* hton,
|
|
THD* thd, /* in: user thread handle */
|
|
void* curview);/* in: Consistent read view to be closed */
|
|
/*********************************************************************
|
|
Removes all tables in the named database inside InnoDB. */
|
|
static
|
|
void
|
|
innobase_drop_database(
|
|
/*===================*/
|
|
/* out: error number */
|
|
handlerton* hton, /* in: handlerton of Innodb */
|
|
char* path); /* in: database path; inside InnoDB the name
|
|
of the last directory in the path is used as
|
|
the database name: for example, in 'mysql/data/test'
|
|
the database name is 'test' */
|
|
/***********************************************************************
|
|
Closes an InnoDB database. */
|
|
static
|
|
int
|
|
innobase_end(handlerton *hton, ha_panic_function type);
|
|
|
|
/*********************************************************************
|
|
Creates an InnoDB transaction struct for the thd if it does not yet have one.
|
|
Starts a new InnoDB transaction if a transaction is not yet started. And
|
|
assigns a new snapshot for a consistent read if the transaction does not yet
|
|
have one. */
|
|
static
|
|
int
|
|
innobase_start_trx_and_assign_read_view(
|
|
/*====================================*/
|
|
/* out: 0 */
|
|
handlerton* hton, /* in: Innodb handlerton */
|
|
THD* thd); /* in: MySQL thread handle of the user for whom
|
|
the transaction should be committed */
|
|
/********************************************************************
|
|
Flushes InnoDB logs to disk and makes a checkpoint. Really, a commit flushes
|
|
the logs, and the name of this function should be innobase_checkpoint. */
|
|
static
|
|
bool
|
|
innobase_flush_logs(
|
|
/*================*/
|
|
/* out: TRUE if error */
|
|
handlerton* hton); /* in: InnoDB handlerton */
|
|
|
|
/****************************************************************************
|
|
Implements the SHOW INNODB STATUS command. Sends the output of the InnoDB
|
|
Monitor to the client. */
|
|
static
|
|
bool
|
|
innodb_show_status(
|
|
/*===============*/
|
|
handlerton* hton, /* in: the innodb handlerton */
|
|
THD* thd, /* in: the MySQL query thread of the caller */
|
|
stat_print_fn *stat_print);
|
|
static
|
|
bool innobase_show_status(handlerton *hton, THD* thd,
|
|
stat_print_fn* stat_print,
|
|
enum ha_stat_type stat_type);
|
|
|
|
/*********************************************************************
|
|
Commits a transaction in an InnoDB database. */
|
|
static
|
|
void
|
|
innobase_commit_low(
|
|
/*================*/
|
|
trx_t* trx); /* in: transaction handle */
|
|
|
|
static SHOW_VAR innodb_status_variables[]= {
|
|
{"buffer_pool_pages_data",
|
|
(char*) &export_vars.innodb_buffer_pool_pages_data, SHOW_LONG},
|
|
{"buffer_pool_pages_dirty",
|
|
(char*) &export_vars.innodb_buffer_pool_pages_dirty, SHOW_LONG},
|
|
{"buffer_pool_pages_flushed",
|
|
(char*) &export_vars.innodb_buffer_pool_pages_flushed, SHOW_LONG},
|
|
{"buffer_pool_pages_free",
|
|
(char*) &export_vars.innodb_buffer_pool_pages_free, SHOW_LONG},
|
|
#ifdef UNIV_DEBUG
|
|
{"buffer_pool_pages_latched",
|
|
(char*) &export_vars.innodb_buffer_pool_pages_latched, SHOW_LONG},
|
|
#endif /* UNIV_DEBUG */
|
|
{"buffer_pool_pages_misc",
|
|
(char*) &export_vars.innodb_buffer_pool_pages_misc, SHOW_LONG},
|
|
{"buffer_pool_pages_total",
|
|
(char*) &export_vars.innodb_buffer_pool_pages_total, SHOW_LONG},
|
|
{"buffer_pool_read_ahead_rnd",
|
|
(char*) &export_vars.innodb_buffer_pool_read_ahead_rnd, SHOW_LONG},
|
|
{"buffer_pool_read_ahead_seq",
|
|
(char*) &export_vars.innodb_buffer_pool_read_ahead_seq, SHOW_LONG},
|
|
{"buffer_pool_read_requests",
|
|
(char*) &export_vars.innodb_buffer_pool_read_requests, SHOW_LONG},
|
|
{"buffer_pool_reads",
|
|
(char*) &export_vars.innodb_buffer_pool_reads, SHOW_LONG},
|
|
{"buffer_pool_wait_free",
|
|
(char*) &export_vars.innodb_buffer_pool_wait_free, SHOW_LONG},
|
|
{"buffer_pool_write_requests",
|
|
(char*) &export_vars.innodb_buffer_pool_write_requests, SHOW_LONG},
|
|
{"data_fsyncs",
|
|
(char*) &export_vars.innodb_data_fsyncs, SHOW_LONG},
|
|
{"data_pending_fsyncs",
|
|
(char*) &export_vars.innodb_data_pending_fsyncs, SHOW_LONG},
|
|
{"data_pending_reads",
|
|
(char*) &export_vars.innodb_data_pending_reads, SHOW_LONG},
|
|
{"data_pending_writes",
|
|
(char*) &export_vars.innodb_data_pending_writes, SHOW_LONG},
|
|
{"data_read",
|
|
(char*) &export_vars.innodb_data_read, SHOW_LONG},
|
|
{"data_reads",
|
|
(char*) &export_vars.innodb_data_reads, SHOW_LONG},
|
|
{"data_writes",
|
|
(char*) &export_vars.innodb_data_writes, SHOW_LONG},
|
|
{"data_written",
|
|
(char*) &export_vars.innodb_data_written, SHOW_LONG},
|
|
{"dblwr_pages_written",
|
|
(char*) &export_vars.innodb_dblwr_pages_written, SHOW_LONG},
|
|
{"dblwr_writes",
|
|
(char*) &export_vars.innodb_dblwr_writes, SHOW_LONG},
|
|
{"log_waits",
|
|
(char*) &export_vars.innodb_log_waits, SHOW_LONG},
|
|
{"log_write_requests",
|
|
(char*) &export_vars.innodb_log_write_requests, SHOW_LONG},
|
|
{"log_writes",
|
|
(char*) &export_vars.innodb_log_writes, SHOW_LONG},
|
|
{"os_log_fsyncs",
|
|
(char*) &export_vars.innodb_os_log_fsyncs, SHOW_LONG},
|
|
{"os_log_pending_fsyncs",
|
|
(char*) &export_vars.innodb_os_log_pending_fsyncs, SHOW_LONG},
|
|
{"os_log_pending_writes",
|
|
(char*) &export_vars.innodb_os_log_pending_writes, SHOW_LONG},
|
|
{"os_log_written",
|
|
(char*) &export_vars.innodb_os_log_written, SHOW_LONG},
|
|
{"page_size",
|
|
(char*) &export_vars.innodb_page_size, SHOW_LONG},
|
|
{"pages_created",
|
|
(char*) &export_vars.innodb_pages_created, SHOW_LONG},
|
|
{"pages_read",
|
|
(char*) &export_vars.innodb_pages_read, SHOW_LONG},
|
|
{"pages_written",
|
|
(char*) &export_vars.innodb_pages_written, SHOW_LONG},
|
|
{"row_lock_current_waits",
|
|
(char*) &export_vars.innodb_row_lock_current_waits, SHOW_LONG},
|
|
{"row_lock_time",
|
|
(char*) &export_vars.innodb_row_lock_time, SHOW_LONGLONG},
|
|
{"row_lock_time_avg",
|
|
(char*) &export_vars.innodb_row_lock_time_avg, SHOW_LONG},
|
|
{"row_lock_time_max",
|
|
(char*) &export_vars.innodb_row_lock_time_max, SHOW_LONG},
|
|
{"row_lock_waits",
|
|
(char*) &export_vars.innodb_row_lock_waits, SHOW_LONG},
|
|
{"rows_deleted",
|
|
(char*) &export_vars.innodb_rows_deleted, SHOW_LONG},
|
|
{"rows_inserted",
|
|
(char*) &export_vars.innodb_rows_inserted, SHOW_LONG},
|
|
{"rows_read",
|
|
(char*) &export_vars.innodb_rows_read, SHOW_LONG},
|
|
{"rows_updated",
|
|
(char*) &export_vars.innodb_rows_updated, SHOW_LONG},
|
|
{NullS, NullS, SHOW_LONG}
|
|
};
|
|
|
|
/* General functions */
|
|
|
|
/**********************************************************************
|
|
Returns true if the thread is the replication thread on the slave
|
|
server. Used in srv_conc_enter_innodb() to determine if the thread
|
|
should be allowed to enter InnoDB - the replication thread is treated
|
|
differently than other threads. Also used in
|
|
srv_conc_force_exit_innodb(). */
|
|
extern "C" UNIV_INTERN
|
|
ibool
|
|
thd_is_replication_slave_thread(
|
|
/*============================*/
|
|
/* out: true if thd is the replication thread */
|
|
void* thd) /* in: thread handle (THD*) */
|
|
{
|
|
return((ibool) thd_slave_thread((THD*) thd));
|
|
}
|
|
|
|
/**********************************************************************
|
|
Save some CPU by testing the value of srv_thread_concurrency in inline
|
|
functions. */
|
|
static inline
|
|
void
|
|
innodb_srv_conc_enter_innodb(
|
|
/*=========================*/
|
|
trx_t* trx) /* in: transaction handle */
|
|
{
|
|
if (UNIV_LIKELY(!srv_thread_concurrency)) {
|
|
|
|
return;
|
|
}
|
|
|
|
srv_conc_enter_innodb(trx);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Save some CPU by testing the value of srv_thread_concurrency in inline
|
|
functions. */
|
|
static inline
|
|
void
|
|
innodb_srv_conc_exit_innodb(
|
|
/*========================*/
|
|
trx_t* trx) /* in: transaction handle */
|
|
{
|
|
if (UNIV_LIKELY(!trx->declared_to_be_inside_innodb)) {
|
|
|
|
return;
|
|
}
|
|
|
|
srv_conc_exit_innodb(trx);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Releases possible search latch and InnoDB thread FIFO ticket. These should
|
|
be released at each SQL statement end, and also when mysqld passes the
|
|
control to the client. It does no harm to release these also in the middle
|
|
of an SQL statement. */
|
|
static inline
|
|
void
|
|
innobase_release_stat_resources(
|
|
/*============================*/
|
|
trx_t* trx) /* in: transaction object */
|
|
{
|
|
if (trx->has_search_latch) {
|
|
trx_search_latch_release_if_reserved(trx);
|
|
}
|
|
|
|
if (trx->declared_to_be_inside_innodb) {
|
|
/* Release our possible ticket in the FIFO */
|
|
|
|
srv_conc_force_exit_innodb(trx);
|
|
}
|
|
}
|
|
|
|
/**********************************************************************
|
|
Returns true if the transaction this thread is processing has edited
|
|
non-transactional tables. Used by the deadlock detector when deciding
|
|
which transaction to rollback in case of a deadlock - we try to avoid
|
|
rolling back transactions that have edited non-transactional tables. */
|
|
extern "C" UNIV_INTERN
|
|
ibool
|
|
thd_has_edited_nontrans_tables(
|
|
/*===========================*/
|
|
/* out: true if non-transactional tables have
|
|
been edited */
|
|
void* thd) /* in: thread handle (THD*) */
|
|
{
|
|
return((ibool) thd_non_transactional_update((THD*) thd));
|
|
}
|
|
|
|
/**********************************************************************
|
|
Returns true if the thread is executing a SELECT statement. */
|
|
extern "C" UNIV_INTERN
|
|
ibool
|
|
thd_is_select(
|
|
/*==========*/
|
|
/* out: true if thd is executing SELECT */
|
|
const void* thd) /* in: thread handle (THD*) */
|
|
{
|
|
return(thd_sql_command((const THD*) thd) == SQLCOM_SELECT);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Returns true if the thread supports XA,
|
|
global value of innodb_supports_xa if thd is NULL. */
|
|
extern "C" UNIV_INTERN
|
|
ibool
|
|
thd_supports_xa(
|
|
/*============*/
|
|
/* out: true if thd has XA support */
|
|
void* thd) /* in: thread handle (THD*), or NULL to query
|
|
the global innodb_supports_xa */
|
|
{
|
|
return(THDVAR((THD*) thd, support_xa));
|
|
}
|
|
|
|
/**********************************************************************
|
|
Returns the lock wait timeout for the current connection. */
|
|
extern "C" UNIV_INTERN
|
|
ulong
|
|
thd_lock_wait_timeout(
|
|
/*==================*/
|
|
/* out: the lock wait timeout, in seconds */
|
|
void* thd) /* in: thread handle (THD*), or NULL to query
|
|
the global innodb_lock_wait_timeout */
|
|
{
|
|
/* According to <mysql/plugin.h>, passing thd == NULL
|
|
returns the global value of the session variable. */
|
|
return(THDVAR((THD*) thd, lock_wait_timeout));
|
|
}
|
|
|
|
/************************************************************************
|
|
Obtain the InnoDB transaction of a MySQL thread. */
|
|
static inline
|
|
trx_t*&
|
|
thd_to_trx(
|
|
/*=======*/
|
|
/* out: reference to transaction pointer */
|
|
THD* thd) /* in: MySQL thread */
|
|
{
|
|
return(*(trx_t**) thd_ha_data(thd, innodb_hton_ptr));
|
|
}
|
|
|
|
/************************************************************************
|
|
Call this function when mysqld passes control to the client. That is to
|
|
avoid deadlocks on the adaptive hash S-latch possibly held by thd. For more
|
|
documentation, see handler.cc. */
|
|
static
|
|
int
|
|
innobase_release_temporary_latches(
|
|
/*===============================*/
|
|
/* out: 0 */
|
|
handlerton* hton, /* in: handlerton */
|
|
THD* thd) /* in: MySQL thread */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
if (!innodb_inited) {
|
|
|
|
return(0);
|
|
}
|
|
|
|
trx = thd_to_trx(thd);
|
|
|
|
if (trx) {
|
|
innobase_release_stat_resources(trx);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/************************************************************************
|
|
Increments innobase_active_counter and every INNOBASE_WAKE_INTERVALth
|
|
time calls srv_active_wake_master_thread. This function should be used
|
|
when a single database operation may introduce a small need for
|
|
server utility activity, like checkpointing. */
|
|
static inline
|
|
void
|
|
innobase_active_small(void)
|
|
/*=======================*/
|
|
{
|
|
innobase_active_counter++;
|
|
|
|
if ((innobase_active_counter % INNOBASE_WAKE_INTERVAL) == 0) {
|
|
srv_active_wake_master_thread();
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
Converts an InnoDB error code to a MySQL error code and also tells to MySQL
|
|
about a possible transaction rollback inside InnoDB caused by a lock wait
|
|
timeout or a deadlock. */
|
|
extern "C" UNIV_INTERN
|
|
int
|
|
convert_error_code_to_mysql(
|
|
/*========================*/
|
|
/* out: MySQL error code */
|
|
int error, /* in: InnoDB error code */
|
|
ulint flags, /* in: InnoDB table flags, or 0 */
|
|
THD* thd) /* in: user thread handle or NULL */
|
|
{
|
|
switch (error) {
|
|
case DB_SUCCESS:
|
|
return(0);
|
|
|
|
case DB_ERROR:
|
|
default:
|
|
return(-1); /* unspecified error */
|
|
|
|
case DB_DUPLICATE_KEY:
|
|
return(HA_ERR_FOUND_DUPP_KEY);
|
|
|
|
case DB_FOREIGN_DUPLICATE_KEY:
|
|
return(HA_ERR_FOREIGN_DUPLICATE_KEY);
|
|
|
|
case DB_RECORD_NOT_FOUND:
|
|
return(HA_ERR_NO_ACTIVE_RECORD);
|
|
|
|
case DB_DEADLOCK:
|
|
/* Since we rolled back the whole transaction, we must
|
|
tell it also to MySQL so that MySQL knows to empty the
|
|
cached binlog for this transaction */
|
|
|
|
if (thd) {
|
|
thd_mark_transaction_to_rollback(thd, TRUE);
|
|
}
|
|
|
|
return(HA_ERR_LOCK_DEADLOCK);
|
|
|
|
case DB_LOCK_WAIT_TIMEOUT:
|
|
/* Starting from 5.0.13, we let MySQL just roll back the
|
|
latest SQL statement in a lock wait timeout. Previously, we
|
|
rolled back the whole transaction. */
|
|
|
|
if (thd) {
|
|
thd_mark_transaction_to_rollback(
|
|
thd, (bool)row_rollback_on_timeout);
|
|
}
|
|
|
|
return(HA_ERR_LOCK_WAIT_TIMEOUT);
|
|
|
|
case DB_NO_REFERENCED_ROW:
|
|
return(HA_ERR_NO_REFERENCED_ROW);
|
|
|
|
case DB_ROW_IS_REFERENCED:
|
|
return(HA_ERR_ROW_IS_REFERENCED);
|
|
|
|
case DB_CANNOT_ADD_CONSTRAINT:
|
|
return(HA_ERR_CANNOT_ADD_FOREIGN);
|
|
|
|
case DB_CANNOT_DROP_CONSTRAINT:
|
|
|
|
return(HA_ERR_ROW_IS_REFERENCED); /* TODO: This is a bit
|
|
misleading, a new MySQL error
|
|
code should be introduced */
|
|
|
|
case DB_COL_APPEARS_TWICE_IN_INDEX:
|
|
case DB_CORRUPTION:
|
|
return(HA_ERR_CRASHED);
|
|
|
|
case DB_OUT_OF_FILE_SPACE:
|
|
return(HA_ERR_RECORD_FILE_FULL);
|
|
|
|
case DB_TABLE_IS_BEING_USED:
|
|
return(HA_ERR_WRONG_COMMAND);
|
|
|
|
case DB_TABLE_NOT_FOUND:
|
|
return(HA_ERR_NO_SUCH_TABLE);
|
|
|
|
case DB_TOO_BIG_RECORD:
|
|
my_error(ER_TOO_BIG_ROWSIZE, MYF(0),
|
|
page_get_free_space_of_empty(flags
|
|
& DICT_TF_COMPACT) / 2);
|
|
return(HA_ERR_TO_BIG_ROW);
|
|
|
|
case DB_NO_SAVEPOINT:
|
|
return(HA_ERR_NO_SAVEPOINT);
|
|
|
|
case DB_LOCK_TABLE_FULL:
|
|
/* Since we rolled back the whole transaction, we must
|
|
tell it also to MySQL so that MySQL knows to empty the
|
|
cached binlog for this transaction */
|
|
|
|
if (thd) {
|
|
thd_mark_transaction_to_rollback(thd, TRUE);
|
|
}
|
|
|
|
return(HA_ERR_LOCK_TABLE_FULL);
|
|
|
|
case DB_PRIMARY_KEY_IS_NULL:
|
|
return(ER_PRIMARY_CANT_HAVE_NULL);
|
|
|
|
case DB_TOO_MANY_CONCURRENT_TRXS:
|
|
/* Once MySQL add the appropriate code to errmsg.txt then
|
|
we can get rid of this #ifdef. NOTE: The code checked by
|
|
the #ifdef is the suggested name for the error condition
|
|
and the actual error code name could very well be different.
|
|
This will require some monitoring, ie. the status
|
|
of this request on our part.*/
|
|
#ifdef ER_TOO_MANY_CONCURRENT_TRXS
|
|
return(ER_TOO_MANY_CONCURRENT_TRXS);
|
|
#else
|
|
return(HA_ERR_RECORD_FILE_FULL);
|
|
#endif
|
|
case DB_UNSUPPORTED:
|
|
return(HA_ERR_UNSUPPORTED);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************
|
|
If you want to print a thd that is not associated with the current thread,
|
|
you must call this function before reserving the InnoDB kernel_mutex, to
|
|
protect MySQL from setting thd->query NULL. If you print a thd of the current
|
|
thread, we know that MySQL cannot modify thd->query, and it is not necessary
|
|
to call this. Call innobase_mysql_end_print_arbitrary_thd() after you release
|
|
the kernel_mutex. */
|
|
extern "C" UNIV_INTERN
|
|
void
|
|
innobase_mysql_prepare_print_arbitrary_thd(void)
|
|
/*============================================*/
|
|
{
|
|
ut_ad(!mutex_own(&kernel_mutex));
|
|
VOID(pthread_mutex_lock(&LOCK_thread_count));
|
|
}
|
|
|
|
/*****************************************************************
|
|
Releases the mutex reserved by innobase_mysql_prepare_print_arbitrary_thd().
|
|
In the InnoDB latching order, the mutex sits right above the
|
|
kernel_mutex. In debug builds, we assert that the kernel_mutex is
|
|
released before this function is invoked. */
|
|
extern "C" UNIV_INTERN
|
|
void
|
|
innobase_mysql_end_print_arbitrary_thd(void)
|
|
/*========================================*/
|
|
{
|
|
ut_ad(!mutex_own(&kernel_mutex));
|
|
VOID(pthread_mutex_unlock(&LOCK_thread_count));
|
|
}
|
|
|
|
/*****************************************************************
|
|
Prints info of a THD object (== user session thread) to the given file. */
|
|
extern "C" UNIV_INTERN
|
|
void
|
|
innobase_mysql_print_thd(
|
|
/*=====================*/
|
|
FILE* f, /* in: output stream */
|
|
void* thd, /* in: pointer to a MySQL THD object */
|
|
uint max_query_len) /* in: max query length to print, or 0 to
|
|
use the default max length */
|
|
{
|
|
char buffer[1024];
|
|
|
|
fputs(thd_security_context((THD*) thd, buffer, sizeof buffer,
|
|
max_query_len), f);
|
|
putc('\n', f);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Get the variable length bounds of the given character set. */
|
|
extern "C" UNIV_INTERN
|
|
void
|
|
innobase_get_cset_width(
|
|
/*====================*/
|
|
ulint cset, /* in: MySQL charset-collation code */
|
|
ulint* mbminlen, /* out: minimum length of a char (in bytes) */
|
|
ulint* mbmaxlen) /* out: maximum length of a char (in bytes) */
|
|
{
|
|
CHARSET_INFO* cs;
|
|
ut_ad(cset < 256);
|
|
ut_ad(mbminlen);
|
|
ut_ad(mbmaxlen);
|
|
|
|
cs = all_charsets[cset];
|
|
if (cs) {
|
|
*mbminlen = cs->mbminlen;
|
|
*mbmaxlen = cs->mbmaxlen;
|
|
} else {
|
|
ut_a(cset == 0);
|
|
*mbminlen = *mbmaxlen = 0;
|
|
}
|
|
}
|
|
|
|
/**********************************************************************
|
|
Converts an identifier to a table name. */
|
|
extern "C" UNIV_INTERN
|
|
void
|
|
innobase_convert_from_table_id(
|
|
/*===========================*/
|
|
struct charset_info_st* cs, /* in: the 'from' character set */
|
|
char* to, /* out: converted identifier */
|
|
const char* from, /* in: identifier to convert */
|
|
ulint len) /* in: length of 'to', in bytes */
|
|
{
|
|
uint errors;
|
|
|
|
strconvert(cs, from, &my_charset_filename, to, (uint) len, &errors);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Converts an identifier to UTF-8. */
|
|
extern "C" UNIV_INTERN
|
|
void
|
|
innobase_convert_from_id(
|
|
/*=====================*/
|
|
struct charset_info_st* cs, /* in: the 'from' character set */
|
|
char* to, /* out: converted identifier */
|
|
const char* from, /* in: identifier to convert */
|
|
ulint len) /* in: length of 'to', in bytes */
|
|
{
|
|
uint errors;
|
|
|
|
strconvert(cs, from, system_charset_info, to, (uint) len, &errors);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Compares NUL-terminated UTF-8 strings case insensitively. */
|
|
extern "C" UNIV_INTERN
|
|
int
|
|
innobase_strcasecmp(
|
|
/*================*/
|
|
/* out: 0 if a=b, <0 if a<b, >1 if a>b */
|
|
const char* a, /* in: first string to compare */
|
|
const char* b) /* in: second string to compare */
|
|
{
|
|
return(my_strcasecmp(system_charset_info, a, b));
|
|
}
|
|
|
|
/**********************************************************************
|
|
Makes all characters in a NUL-terminated UTF-8 string lower case. */
|
|
extern "C" UNIV_INTERN
|
|
void
|
|
innobase_casedn_str(
|
|
/*================*/
|
|
char* a) /* in/out: string to put in lower case */
|
|
{
|
|
my_casedn_str(system_charset_info, a);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Determines the connection character set. */
|
|
extern "C" UNIV_INTERN
|
|
struct charset_info_st*
|
|
innobase_get_charset(
|
|
/*=================*/
|
|
/* out: connection character set */
|
|
void* mysql_thd) /* in: MySQL thread handle */
|
|
{
|
|
return(thd_charset((THD*) mysql_thd));
|
|
}
|
|
|
|
#if defined (__WIN__) && defined (MYSQL_DYNAMIC_PLUGIN)
|
|
/***********************************************************************
|
|
Map an OS error to an errno value. The OS error number is stored in
|
|
_doserrno and the mapped value is stored in errno) */
|
|
extern "C"
|
|
void __cdecl
|
|
_dosmaperr(
|
|
unsigned long); /* in: OS error value */
|
|
|
|
/*************************************************************************
|
|
Creates a temporary file. */
|
|
extern "C" UNIV_INTERN
|
|
int
|
|
innobase_mysql_tmpfile(void)
|
|
/*========================*/
|
|
/* out: temporary file descriptor, or < 0 on error */
|
|
{
|
|
int fd; /* handle of opened file */
|
|
HANDLE osfh; /* OS handle of opened file */
|
|
char* tmpdir; /* point to the directory
|
|
where to create file */
|
|
TCHAR path_buf[MAX_PATH - 14]; /* buffer for tmp file path.
|
|
The length cannot be longer
|
|
than MAX_PATH - 14, or
|
|
GetTempFileName will fail. */
|
|
char filename[MAX_PATH]; /* name of the tmpfile */
|
|
DWORD fileaccess = GENERIC_READ /* OS file access */
|
|
| GENERIC_WRITE
|
|
| DELETE;
|
|
DWORD fileshare = FILE_SHARE_READ /* OS file sharing mode */
|
|
| FILE_SHARE_WRITE
|
|
| FILE_SHARE_DELETE;
|
|
DWORD filecreate = CREATE_ALWAYS; /* OS method of open/create */
|
|
DWORD fileattrib = /* OS file attribute flags */
|
|
FILE_ATTRIBUTE_NORMAL
|
|
| FILE_FLAG_DELETE_ON_CLOSE
|
|
| FILE_ATTRIBUTE_TEMPORARY
|
|
| FILE_FLAG_SEQUENTIAL_SCAN;
|
|
|
|
DBUG_ENTER("innobase_mysql_tmpfile");
|
|
|
|
tmpdir = my_tmpdir(&mysql_tmpdir_list);
|
|
|
|
/* The tmpdir parameter can not be NULL for GetTempFileName. */
|
|
if (!tmpdir) {
|
|
uint ret;
|
|
|
|
/* Use GetTempPath to determine path for temporary files. */
|
|
ret = GetTempPath(sizeof(path_buf), path_buf);
|
|
if (ret > sizeof(path_buf) || (ret == 0)) {
|
|
|
|
_dosmaperr(GetLastError()); /* map error */
|
|
DBUG_RETURN(-1);
|
|
}
|
|
|
|
tmpdir = path_buf;
|
|
}
|
|
|
|
/* Use GetTempFileName to generate a unique filename. */
|
|
if (!GetTempFileName(tmpdir, "ib", 0, filename)) {
|
|
|
|
_dosmaperr(GetLastError()); /* map error */
|
|
DBUG_RETURN(-1);
|
|
}
|
|
|
|
DBUG_PRINT("info", ("filename: %s", filename));
|
|
|
|
/* Open/Create the file. */
|
|
osfh = CreateFile(filename, fileaccess, fileshare, NULL,
|
|
filecreate, fileattrib, NULL);
|
|
if (osfh == INVALID_HANDLE_VALUE) {
|
|
|
|
/* open/create file failed! */
|
|
_dosmaperr(GetLastError()); /* map error */
|
|
DBUG_RETURN(-1);
|
|
}
|
|
|
|
do {
|
|
/* Associates a CRT file descriptor with the OS file handle. */
|
|
fd = _open_osfhandle((intptr_t) osfh, 0);
|
|
} while (fd == -1 && errno == EINTR);
|
|
|
|
if (fd == -1) {
|
|
/* Open failed, close the file handle. */
|
|
|
|
_dosmaperr(GetLastError()); /* map error */
|
|
CloseHandle(osfh); /* no need to check if
|
|
CloseHandle fails */
|
|
}
|
|
|
|
DBUG_RETURN(fd);
|
|
}
|
|
#else
|
|
/*************************************************************************
|
|
Creates a temporary file. */
|
|
extern "C" UNIV_INTERN
|
|
int
|
|
innobase_mysql_tmpfile(void)
|
|
/*========================*/
|
|
/* out: temporary file descriptor, or < 0 on error */
|
|
{
|
|
int fd2 = -1;
|
|
File fd = mysql_tmpfile("ib");
|
|
if (fd >= 0) {
|
|
/* Copy the file descriptor, so that the additional resources
|
|
allocated by create_temp_file() can be freed by invoking
|
|
my_close().
|
|
|
|
Because the file descriptor returned by this function
|
|
will be passed to fdopen(), it will be closed by invoking
|
|
fclose(), which in turn will invoke close() instead of
|
|
my_close(). */
|
|
fd2 = dup(fd);
|
|
if (fd2 < 0) {
|
|
DBUG_PRINT("error",("Got error %d on dup",fd2));
|
|
my_errno=errno;
|
|
my_error(EE_OUT_OF_FILERESOURCES,
|
|
MYF(ME_BELL+ME_WAITTANG),
|
|
"ib*", my_errno);
|
|
}
|
|
my_close(fd, MYF(MY_WME));
|
|
}
|
|
return(fd2);
|
|
}
|
|
#endif /* defined (__WIN__) && defined (MYSQL_DYNAMIC_PLUGIN) */
|
|
|
|
/*************************************************************************
|
|
Wrapper around MySQL's copy_and_convert function, see it for
|
|
documentation. */
|
|
extern "C" UNIV_INTERN
|
|
ulint
|
|
innobase_convert_string(
|
|
/*====================*/
|
|
void* to,
|
|
ulint to_length,
|
|
CHARSET_INFO* to_cs,
|
|
const void* from,
|
|
ulint from_length,
|
|
CHARSET_INFO* from_cs,
|
|
uint* errors)
|
|
{
|
|
return(copy_and_convert((char*)to, (uint32) to_length, to_cs,
|
|
(const char*)from, (uint32) from_length, from_cs,
|
|
errors));
|
|
}
|
|
|
|
/***********************************************************************
|
|
Formats the raw data in "data" (in InnoDB on-disk format) that is of
|
|
type DATA_(CHAR|VARCHAR|MYSQL|VARMYSQL) using "charset_coll" and writes
|
|
the result to "buf". The result is converted to "system_charset_info".
|
|
Not more than "buf_size" bytes are written to "buf".
|
|
The result is always '\0'-terminated (provided buf_size > 0) and the
|
|
number of bytes that were written to "buf" is returned (including the
|
|
terminating '\0'). */
|
|
extern "C" UNIV_INTERN
|
|
ulint
|
|
innobase_raw_format(
|
|
/*================*/
|
|
/* out: number of bytes
|
|
that were written */
|
|
const char* data, /* in: raw data */
|
|
ulint data_len, /* in: raw data length
|
|
in bytes */
|
|
ulint charset_coll, /* in: charset collation */
|
|
char* buf, /* out: output buffer */
|
|
ulint buf_size) /* in: output buffer size
|
|
in bytes */
|
|
{
|
|
/* XXX we use a hard limit instead of allocating
|
|
but_size bytes from the heap */
|
|
CHARSET_INFO* data_cs;
|
|
char buf_tmp[8192];
|
|
ulint buf_tmp_used;
|
|
uint num_errors;
|
|
|
|
data_cs = all_charsets[charset_coll];
|
|
|
|
buf_tmp_used = innobase_convert_string(buf_tmp, sizeof(buf_tmp),
|
|
system_charset_info,
|
|
data, data_len, data_cs,
|
|
&num_errors);
|
|
|
|
return(ut_str_sql_format(buf_tmp, buf_tmp_used, buf, buf_size));
|
|
}
|
|
|
|
/*************************************************************************
|
|
Compute the next autoinc value.
|
|
|
|
For MySQL replication the autoincrement values can be partitioned among
|
|
the nodes. The offset is the start or origin of the autoincrement value
|
|
for a particular node. For n nodes the increment will be n and the offset
|
|
will be in the interval [1, n]. The formula tries to allocate the next
|
|
value for a particular node.
|
|
|
|
Note: This function is also called with increment set to the number of
|
|
values we want to reserve for multi-value inserts e.g.,
|
|
|
|
INSERT INTO T VALUES(), (), ();
|
|
|
|
innobase_next_autoinc() will be called with increment set to
|
|
n * 3 where autoinc_lock_mode != TRADITIONAL because we want
|
|
to reserve 3 values for the multi-value INSERT above. */
|
|
static
|
|
ulonglong
|
|
innobase_next_autoinc(
|
|
/*==================*/
|
|
/* out: the next value */
|
|
ulonglong current, /* in: Current value */
|
|
ulonglong increment, /* in: increment current by */
|
|
ulonglong offset, /* in: AUTOINC offset */
|
|
ulonglong max_value) /* in: max value for type */
|
|
{
|
|
ulonglong next_value;
|
|
|
|
/* Should never be 0. */
|
|
ut_a(increment > 0);
|
|
|
|
if (max_value <= current) {
|
|
next_value = max_value;
|
|
} else if (offset <= 1) {
|
|
/* Offset 0 and 1 are the same, because there must be at
|
|
least one node in the system. */
|
|
if (max_value - current <= increment) {
|
|
next_value = max_value;
|
|
} else {
|
|
next_value = current + increment;
|
|
}
|
|
} else if (max_value > current) {
|
|
if (current > offset) {
|
|
next_value = ((current - offset) / increment) + 1;
|
|
} else {
|
|
next_value = ((offset - current) / increment) + 1;
|
|
}
|
|
|
|
ut_a(increment > 0);
|
|
ut_a(next_value > 0);
|
|
|
|
/* Check for multiplication overflow. */
|
|
if (increment > (max_value / next_value)) {
|
|
|
|
next_value = max_value;
|
|
} else {
|
|
next_value *= increment;
|
|
|
|
ut_a(max_value >= next_value);
|
|
|
|
/* Check for overflow. */
|
|
if (max_value - next_value <= offset) {
|
|
next_value = max_value;
|
|
} else {
|
|
next_value += offset;
|
|
}
|
|
}
|
|
} else {
|
|
next_value = max_value;
|
|
}
|
|
|
|
ut_a(next_value <= max_value);
|
|
|
|
return(next_value);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Initializes some fields in an InnoDB transaction object. */
|
|
static
|
|
void
|
|
innobase_trx_init(
|
|
/*==============*/
|
|
THD* thd, /* in: user thread handle */
|
|
trx_t* trx) /* in/out: InnoDB transaction handle */
|
|
{
|
|
DBUG_ENTER("innobase_trx_init");
|
|
DBUG_ASSERT(EQ_CURRENT_THD(thd));
|
|
DBUG_ASSERT(thd == trx->mysql_thd);
|
|
|
|
trx->check_foreigns = !thd_test_options(
|
|
thd, OPTION_NO_FOREIGN_KEY_CHECKS);
|
|
|
|
trx->check_unique_secondary = !thd_test_options(
|
|
thd, OPTION_RELAXED_UNIQUE_CHECKS);
|
|
|
|
DBUG_VOID_RETURN;
|
|
}
|
|
|
|
/*************************************************************************
|
|
Allocates an InnoDB transaction for a MySQL handler object. */
|
|
extern "C" UNIV_INTERN
|
|
trx_t*
|
|
innobase_trx_allocate(
|
|
/*==================*/
|
|
/* out: InnoDB transaction handle */
|
|
THD* thd) /* in: user thread handle */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ENTER("innobase_trx_allocate");
|
|
DBUG_ASSERT(thd != NULL);
|
|
DBUG_ASSERT(EQ_CURRENT_THD(thd));
|
|
|
|
trx = trx_allocate_for_mysql();
|
|
|
|
trx->mysql_thd = thd;
|
|
trx->mysql_query_str = thd_query(thd);
|
|
|
|
innobase_trx_init(thd, trx);
|
|
|
|
DBUG_RETURN(trx);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Gets the InnoDB transaction handle for a MySQL handler object, creates
|
|
an InnoDB transaction struct if the corresponding MySQL thread struct still
|
|
lacks one. */
|
|
static
|
|
trx_t*
|
|
check_trx_exists(
|
|
/*=============*/
|
|
/* out: InnoDB transaction handle */
|
|
THD* thd) /* in: user thread handle */
|
|
{
|
|
trx_t*& trx = thd_to_trx(thd);
|
|
|
|
ut_ad(EQ_CURRENT_THD(thd));
|
|
|
|
if (trx == NULL) {
|
|
trx = innobase_trx_allocate(thd);
|
|
} else if (UNIV_UNLIKELY(trx->magic_n != TRX_MAGIC_N)) {
|
|
mem_analyze_corruption(trx);
|
|
ut_error;
|
|
}
|
|
|
|
innobase_trx_init(thd, trx);
|
|
|
|
return(trx);
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
Construct ha_innobase handler. */
|
|
UNIV_INTERN
|
|
ha_innobase::ha_innobase(handlerton *hton, TABLE_SHARE *table_arg)
|
|
:handler(hton, table_arg),
|
|
int_table_flags(HA_REC_NOT_IN_SEQ |
|
|
HA_NULL_IN_KEY |
|
|
HA_CAN_INDEX_BLOBS |
|
|
HA_CAN_SQL_HANDLER |
|
|
HA_PRIMARY_KEY_REQUIRED_FOR_POSITION |
|
|
HA_PRIMARY_KEY_IN_READ_INDEX |
|
|
HA_BINLOG_ROW_CAPABLE |
|
|
HA_CAN_GEOMETRY | HA_PARTIAL_COLUMN_READ |
|
|
HA_TABLE_SCAN_ON_INDEX),
|
|
start_of_scan(0),
|
|
num_write_row(0)
|
|
{}
|
|
|
|
/*************************************************************************
|
|
Destruct ha_innobase handler. */
|
|
UNIV_INTERN
|
|
ha_innobase::~ha_innobase()
|
|
{
|
|
}
|
|
|
|
/*************************************************************************
|
|
Updates the user_thd field in a handle and also allocates a new InnoDB
|
|
transaction handle if needed, and updates the transaction fields in the
|
|
prebuilt struct. */
|
|
UNIV_INTERN inline
|
|
void
|
|
ha_innobase::update_thd(
|
|
/*====================*/
|
|
THD* thd) /* in: thd to use the handle */
|
|
{
|
|
trx_t* trx;
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
if (prebuilt->trx != trx) {
|
|
|
|
row_update_prebuilt_trx(prebuilt, trx);
|
|
}
|
|
|
|
user_thd = thd;
|
|
}
|
|
|
|
/*************************************************************************
|
|
Updates the user_thd field in a handle and also allocates a new InnoDB
|
|
transaction handle if needed, and updates the transaction fields in the
|
|
prebuilt struct. */
|
|
UNIV_INTERN
|
|
void
|
|
ha_innobase::update_thd()
|
|
/*=====================*/
|
|
{
|
|
THD* thd = ha_thd();
|
|
ut_ad(EQ_CURRENT_THD(thd));
|
|
update_thd(thd);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Registers that InnoDB takes part in an SQL statement, so that MySQL knows to
|
|
roll back the statement if the statement results in an error. This MUST be
|
|
called for every SQL statement that may be rolled back by MySQL. Calling this
|
|
several times to register the same statement is allowed, too. */
|
|
static inline
|
|
void
|
|
innobase_register_stmt(
|
|
/*===================*/
|
|
handlerton* hton, /* in: Innobase hton */
|
|
THD* thd) /* in: MySQL thd (connection) object */
|
|
{
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
/* Register the statement */
|
|
trans_register_ha(thd, FALSE, hton);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Registers an InnoDB transaction in MySQL, so that the MySQL XA code knows
|
|
to call the InnoDB prepare and commit, or rollback for the transaction. This
|
|
MUST be called for every transaction for which the user may call commit or
|
|
rollback. Calling this several times to register the same transaction is
|
|
allowed, too.
|
|
This function also registers the current SQL statement. */
|
|
static inline
|
|
void
|
|
innobase_register_trx_and_stmt(
|
|
/*===========================*/
|
|
handlerton *hton, /* in: Innobase handlerton */
|
|
THD* thd) /* in: MySQL thd (connection) object */
|
|
{
|
|
/* NOTE that actually innobase_register_stmt() registers also
|
|
the transaction in the AUTOCOMMIT=1 mode. */
|
|
|
|
innobase_register_stmt(hton, thd);
|
|
|
|
if (thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
|
|
|
|
/* No autocommit mode, register for a transaction */
|
|
trans_register_ha(thd, TRUE, hton);
|
|
}
|
|
}
|
|
|
|
/* BACKGROUND INFO: HOW THE MYSQL QUERY CACHE WORKS WITH INNODB
|
|
------------------------------------------------------------
|
|
|
|
1) The use of the query cache for TBL is disabled when there is an
|
|
uncommitted change to TBL.
|
|
|
|
2) When a change to TBL commits, InnoDB stores the current value of
|
|
its global trx id counter, let us denote it by INV_TRX_ID, to the table object
|
|
in the InnoDB data dictionary, and does only allow such transactions whose
|
|
id <= INV_TRX_ID to use the query cache.
|
|
|
|
3) When InnoDB does an INSERT/DELETE/UPDATE to a table TBL, or an implicit
|
|
modification because an ON DELETE CASCADE, we invalidate the MySQL query cache
|
|
of TBL immediately.
|
|
|
|
How this is implemented inside InnoDB:
|
|
|
|
1) Since every modification always sets an IX type table lock on the InnoDB
|
|
table, it is easy to check if there can be uncommitted modifications for a
|
|
table: just check if there are locks in the lock list of the table.
|
|
|
|
2) When a transaction inside InnoDB commits, it reads the global trx id
|
|
counter and stores the value INV_TRX_ID to the tables on which it had a lock.
|
|
|
|
3) If there is an implicit table change from ON DELETE CASCADE or SET NULL,
|
|
InnoDB calls an invalidate method for the MySQL query cache for that table.
|
|
|
|
How this is implemented inside sql_cache.cc:
|
|
|
|
1) The query cache for an InnoDB table TBL is invalidated immediately at an
|
|
INSERT/UPDATE/DELETE, just like in the case of MyISAM. No need to delay
|
|
invalidation to the transaction commit.
|
|
|
|
2) To store or retrieve a value from the query cache of an InnoDB table TBL,
|
|
any query must first ask InnoDB's permission. We must pass the thd as a
|
|
parameter because InnoDB will look at the trx id, if any, associated with
|
|
that thd.
|
|
|
|
3) Use of the query cache for InnoDB tables is now allowed also when
|
|
AUTOCOMMIT==0 or we are inside BEGIN ... COMMIT. Thus transactions no longer
|
|
put restrictions on the use of the query cache.
|
|
*/
|
|
|
|
/**********************************************************************
|
|
The MySQL query cache uses this to check from InnoDB if the query cache at
|
|
the moment is allowed to operate on an InnoDB table. The SQL query must
|
|
be a non-locking SELECT.
|
|
|
|
The query cache is allowed to operate on certain query only if this function
|
|
returns TRUE for all tables in the query.
|
|
|
|
If thd is not in the autocommit state, this function also starts a new
|
|
transaction for thd if there is no active trx yet, and assigns a consistent
|
|
read view to it if there is no read view yet.
|
|
|
|
Why a deadlock of threads is not possible: the query cache calls this function
|
|
at the start of a SELECT processing. Then the calling thread cannot be
|
|
holding any InnoDB semaphores. The calling thread is holding the
|
|
query cache mutex, and this function will reserver the InnoDB kernel mutex.
|
|
Thus, the 'rank' in sync0sync.h of the MySQL query cache mutex is above
|
|
the InnoDB kernel mutex. */
|
|
static
|
|
my_bool
|
|
innobase_query_caching_of_table_permitted(
|
|
/*======================================*/
|
|
/* out: TRUE if permitted, FALSE if not;
|
|
note that the value FALSE does not mean
|
|
we should invalidate the query cache:
|
|
invalidation is called explicitly */
|
|
THD* thd, /* in: thd of the user who is trying to
|
|
store a result to the query cache or
|
|
retrieve it */
|
|
char* full_name, /* in: concatenation of database name,
|
|
the null character '\0', and the table
|
|
name */
|
|
uint full_name_len, /* in: length of the full name, i.e.
|
|
len(dbname) + len(tablename) + 1 */
|
|
ulonglong *unused) /* unused for this engine */
|
|
{
|
|
ibool is_autocommit;
|
|
trx_t* trx;
|
|
char norm_name[1000];
|
|
|
|
ut_a(full_name_len < 999);
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
if (trx->isolation_level == TRX_ISO_SERIALIZABLE) {
|
|
/* In the SERIALIZABLE mode we add LOCK IN SHARE MODE to every
|
|
plain SELECT if AUTOCOMMIT is not on. */
|
|
|
|
return((my_bool)FALSE);
|
|
}
|
|
|
|
if (trx->has_search_latch) {
|
|
sql_print_error("The calling thread is holding the adaptive "
|
|
"search, latch though calling "
|
|
"innobase_query_caching_of_table_permitted.");
|
|
|
|
mutex_enter(&kernel_mutex);
|
|
trx_print(stderr, trx, 1024);
|
|
mutex_exit(&kernel_mutex);
|
|
}
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
if (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
|
|
|
|
is_autocommit = TRUE;
|
|
} else {
|
|
is_autocommit = FALSE;
|
|
|
|
}
|
|
|
|
if (is_autocommit && trx->n_mysql_tables_in_use == 0) {
|
|
/* We are going to retrieve the query result from the query
|
|
cache. This cannot be a store operation to the query cache
|
|
because then MySQL would have locks on tables already.
|
|
|
|
TODO: if the user has used LOCK TABLES to lock the table,
|
|
then we open a transaction in the call of row_.. below.
|
|
That trx can stay open until UNLOCK TABLES. The same problem
|
|
exists even if we do not use the query cache. MySQL should be
|
|
modified so that it ALWAYS calls some cleanup function when
|
|
the processing of a query ends!
|
|
|
|
We can imagine we instantaneously serialize this consistent
|
|
read trx to the current trx id counter. If trx2 would have
|
|
changed the tables of a query result stored in the cache, and
|
|
trx2 would have already committed, making the result obsolete,
|
|
then trx2 would have already invalidated the cache. Thus we
|
|
can trust the result in the cache is ok for this query. */
|
|
|
|
return((my_bool)TRUE);
|
|
}
|
|
|
|
/* Normalize the table name to InnoDB format */
|
|
|
|
memcpy(norm_name, full_name, full_name_len);
|
|
|
|
norm_name[strlen(norm_name)] = '/'; /* InnoDB uses '/' as the
|
|
separator between db and table */
|
|
norm_name[full_name_len] = '\0';
|
|
#ifdef __WIN__
|
|
innobase_casedn_str(norm_name);
|
|
#endif
|
|
/* The call of row_search_.. will start a new transaction if it is
|
|
not yet started */
|
|
|
|
if (trx->active_trans == 0) {
|
|
|
|
innobase_register_trx_and_stmt(innodb_hton_ptr, thd);
|
|
trx->active_trans = 1;
|
|
}
|
|
|
|
if (row_search_check_if_query_cache_permitted(trx, norm_name)) {
|
|
|
|
/* printf("Query cache for %s permitted\n", norm_name); */
|
|
|
|
return((my_bool)TRUE);
|
|
}
|
|
|
|
/* printf("Query cache for %s NOT permitted\n", norm_name); */
|
|
|
|
return((my_bool)FALSE);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Invalidates the MySQL query cache for the table.
|
|
NOTE that the exact prototype of this function has to be in
|
|
/innobase/row/row0ins.c! */
|
|
extern "C" UNIV_INTERN
|
|
void
|
|
innobase_invalidate_query_cache(
|
|
/*============================*/
|
|
trx_t* trx, /* in: transaction which modifies the table */
|
|
char* full_name, /* in: concatenation of database name, null
|
|
char '\0', table name, null char'\0';
|
|
NOTE that in Windows this is always
|
|
in LOWER CASE! */
|
|
ulint full_name_len) /* in: full name length where also the null
|
|
chars count */
|
|
{
|
|
/* Note that the sync0sync.h rank of the query cache mutex is just
|
|
above the InnoDB kernel mutex. The caller of this function must not
|
|
have latches of a lower rank. */
|
|
|
|
/* Argument TRUE below means we are using transactions */
|
|
#ifdef HAVE_QUERY_CACHE
|
|
mysql_query_cache_invalidate4((THD*) trx->mysql_thd,
|
|
(const char*) full_name,
|
|
(uint32) full_name_len,
|
|
TRUE);
|
|
#endif
|
|
}
|
|
|
|
/*********************************************************************
|
|
Convert an SQL identifier to the MySQL system_charset_info (UTF-8)
|
|
and quote it if needed. */
|
|
static
|
|
char*
|
|
innobase_convert_identifier(
|
|
/*========================*/
|
|
/* out: pointer to the end of buf */
|
|
char* buf, /* out: buffer for converted identifier */
|
|
ulint buflen, /* in: length of buf, in bytes */
|
|
const char* id, /* in: identifier to convert */
|
|
ulint idlen, /* in: length of id, in bytes */
|
|
void* thd, /* in: MySQL connection thread, or NULL */
|
|
ibool file_id)/* in: TRUE=id is a table or database name;
|
|
FALSE=id is an UTF-8 string */
|
|
{
|
|
char nz[NAME_LEN + 1];
|
|
char nz2[NAME_LEN + 1 + sizeof srv_mysql50_table_name_prefix];
|
|
|
|
const char* s = id;
|
|
int q;
|
|
|
|
if (file_id) {
|
|
/* Decode the table name. The filename_to_tablename()
|
|
function expects a NUL-terminated string. The input and
|
|
output strings buffers must not be shared. */
|
|
|
|
if (UNIV_UNLIKELY(idlen > (sizeof nz) - 1)) {
|
|
idlen = (sizeof nz) - 1;
|
|
}
|
|
|
|
memcpy(nz, id, idlen);
|
|
nz[idlen] = 0;
|
|
|
|
s = nz2;
|
|
idlen = filename_to_tablename(nz, nz2, sizeof nz2);
|
|
}
|
|
|
|
/* See if the identifier needs to be quoted. */
|
|
if (UNIV_UNLIKELY(!thd)) {
|
|
q = '"';
|
|
} else {
|
|
q = get_quote_char_for_identifier((THD*) thd, s, (int) idlen);
|
|
}
|
|
|
|
if (q == EOF) {
|
|
if (UNIV_UNLIKELY(idlen > buflen)) {
|
|
idlen = buflen;
|
|
}
|
|
memcpy(buf, s, idlen);
|
|
return(buf + idlen);
|
|
}
|
|
|
|
/* Quote the identifier. */
|
|
if (buflen < 2) {
|
|
return(buf);
|
|
}
|
|
|
|
*buf++ = q;
|
|
buflen--;
|
|
|
|
for (; idlen; idlen--) {
|
|
int c = *s++;
|
|
if (UNIV_UNLIKELY(c == q)) {
|
|
if (UNIV_UNLIKELY(buflen < 3)) {
|
|
break;
|
|
}
|
|
|
|
*buf++ = c;
|
|
*buf++ = c;
|
|
buflen -= 2;
|
|
} else {
|
|
if (UNIV_UNLIKELY(buflen < 2)) {
|
|
break;
|
|
}
|
|
|
|
*buf++ = c;
|
|
buflen--;
|
|
}
|
|
}
|
|
|
|
*buf++ = q;
|
|
return(buf);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Convert a table or index name to the MySQL system_charset_info (UTF-8)
|
|
and quote it if needed. */
|
|
extern "C" UNIV_INTERN
|
|
char*
|
|
innobase_convert_name(
|
|
/*==================*/
|
|
/* out: pointer to the end of buf */
|
|
char* buf, /* out: buffer for converted identifier */
|
|
ulint buflen, /* in: length of buf, in bytes */
|
|
const char* id, /* in: identifier to convert */
|
|
ulint idlen, /* in: length of id, in bytes */
|
|
void* thd, /* in: MySQL connection thread, or NULL */
|
|
ibool table_id)/* in: TRUE=id is a table or database name;
|
|
FALSE=id is an index name */
|
|
{
|
|
char* s = buf;
|
|
const char* bufend = buf + buflen;
|
|
|
|
if (table_id) {
|
|
const char* slash = (const char*) memchr(id, '/', idlen);
|
|
if (!slash) {
|
|
|
|
goto no_db_name;
|
|
}
|
|
|
|
/* Print the database name and table name separately. */
|
|
s = innobase_convert_identifier(s, bufend - s, id, slash - id,
|
|
thd, TRUE);
|
|
if (UNIV_LIKELY(s < bufend)) {
|
|
*s++ = '.';
|
|
s = innobase_convert_identifier(s, bufend - s,
|
|
slash + 1, idlen
|
|
- (slash - id) - 1,
|
|
thd, TRUE);
|
|
}
|
|
} else if (UNIV_UNLIKELY(*id == TEMP_INDEX_PREFIX)) {
|
|
/* Temporary index name (smart ALTER TABLE) */
|
|
const char temp_index_suffix[]= "--temporary--";
|
|
|
|
s = innobase_convert_identifier(buf, buflen, id + 1, idlen - 1,
|
|
thd, FALSE);
|
|
if (s - buf + (sizeof temp_index_suffix - 1) < buflen) {
|
|
memcpy(s, temp_index_suffix,
|
|
sizeof temp_index_suffix - 1);
|
|
s += sizeof temp_index_suffix - 1;
|
|
}
|
|
} else {
|
|
no_db_name:
|
|
s = innobase_convert_identifier(buf, buflen, id, idlen,
|
|
thd, table_id);
|
|
}
|
|
|
|
return(s);
|
|
|
|
}
|
|
|
|
/**************************************************************************
|
|
Determines if the currently running transaction has been interrupted. */
|
|
extern "C" UNIV_INTERN
|
|
ibool
|
|
trx_is_interrupted(
|
|
/*===============*/
|
|
/* out: TRUE if interrupted */
|
|
trx_t* trx) /* in: transaction */
|
|
{
|
|
return(trx && trx->mysql_thd && thd_killed((THD*) trx->mysql_thd));
|
|
}
|
|
|
|
/******************************************************************
|
|
Resets some fields of a prebuilt struct. The template is used in fast
|
|
retrieval of just those column values MySQL needs in its processing. */
|
|
static
|
|
void
|
|
reset_template(
|
|
/*===========*/
|
|
row_prebuilt_t* prebuilt) /* in/out: prebuilt struct */
|
|
{
|
|
prebuilt->keep_other_fields_on_keyread = 0;
|
|
prebuilt->read_just_key = 0;
|
|
}
|
|
|
|
/*********************************************************************
|
|
Call this when you have opened a new table handle in HANDLER, before you
|
|
call index_read_idx() etc. Actually, we can let the cursor stay open even
|
|
over a transaction commit! Then you should call this before every operation,
|
|
fetch next etc. This function inits the necessary things even after a
|
|
transaction commit. */
|
|
UNIV_INTERN
|
|
void
|
|
ha_innobase::init_table_handle_for_HANDLER(void)
|
|
/*============================================*/
|
|
{
|
|
/* If current thd does not yet have a trx struct, create one.
|
|
If the current handle does not yet have a prebuilt struct, create
|
|
one. Update the trx pointers in the prebuilt struct. Normally
|
|
this operation is done in external_lock. */
|
|
|
|
update_thd(ha_thd());
|
|
|
|
/* Initialize the prebuilt struct much like it would be inited in
|
|
external_lock */
|
|
|
|
innobase_release_stat_resources(prebuilt->trx);
|
|
|
|
/* If the transaction is not started yet, start it */
|
|
|
|
trx_start_if_not_started(prebuilt->trx);
|
|
|
|
/* Assign a read view if the transaction does not have it yet */
|
|
|
|
trx_assign_read_view(prebuilt->trx);
|
|
|
|
/* Set the MySQL flag to mark that there is an active transaction */
|
|
|
|
if (prebuilt->trx->active_trans == 0) {
|
|
|
|
innobase_register_trx_and_stmt(ht, user_thd);
|
|
|
|
prebuilt->trx->active_trans = 1;
|
|
}
|
|
|
|
/* We did the necessary inits in this function, no need to repeat them
|
|
in row_search_for_mysql */
|
|
|
|
prebuilt->sql_stat_start = FALSE;
|
|
|
|
/* We let HANDLER always to do the reads as consistent reads, even
|
|
if the trx isolation level would have been specified as SERIALIZABLE */
|
|
|
|
prebuilt->select_lock_type = LOCK_NONE;
|
|
prebuilt->stored_select_lock_type = LOCK_NONE;
|
|
|
|
/* Always fetch all columns in the index record */
|
|
|
|
prebuilt->hint_need_to_fetch_extra_cols = ROW_RETRIEVE_ALL_COLS;
|
|
|
|
/* We want always to fetch all columns in the whole row? Or do
|
|
we???? */
|
|
|
|
prebuilt->used_in_HANDLER = TRUE;
|
|
reset_template(prebuilt);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Opens an InnoDB database. */
|
|
static
|
|
int
|
|
innobase_init(
|
|
/*==========*/
|
|
/* out: 0 on success, error code on failure */
|
|
void *p) /* in: InnoDB handlerton */
|
|
{
|
|
static char current_dir[3]; /* Set if using current lib */
|
|
int err;
|
|
bool ret;
|
|
char *default_path;
|
|
uint format_id;
|
|
|
|
DBUG_ENTER("innobase_init");
|
|
handlerton *innobase_hton= (handlerton *)p;
|
|
|
|
#ifdef MYSQL_DYNAMIC_PLUGIN
|
|
if (!innodb_plugin_init()) {
|
|
sql_print_error("InnoDB plugin init failed.");
|
|
DBUG_RETURN(-1);
|
|
}
|
|
|
|
if (innodb_hton_ptr) {
|
|
/* Patch the statically linked handlerton and variables */
|
|
innobase_hton = innodb_hton_ptr;
|
|
}
|
|
#endif /* MYSQL_DYNAMIC_PLUGIN */
|
|
|
|
innodb_hton_ptr = innobase_hton;
|
|
|
|
innobase_hton->state = SHOW_OPTION_YES;
|
|
innobase_hton->db_type= DB_TYPE_INNODB;
|
|
innobase_hton->savepoint_offset=sizeof(trx_named_savept_t);
|
|
innobase_hton->close_connection=innobase_close_connection;
|
|
innobase_hton->savepoint_set=innobase_savepoint;
|
|
innobase_hton->savepoint_rollback=innobase_rollback_to_savepoint;
|
|
innobase_hton->savepoint_release=innobase_release_savepoint;
|
|
innobase_hton->commit=innobase_commit;
|
|
innobase_hton->rollback=innobase_rollback;
|
|
innobase_hton->prepare=innobase_xa_prepare;
|
|
innobase_hton->recover=innobase_xa_recover;
|
|
innobase_hton->commit_by_xid=innobase_commit_by_xid;
|
|
innobase_hton->rollback_by_xid=innobase_rollback_by_xid;
|
|
innobase_hton->create_cursor_read_view=innobase_create_cursor_view;
|
|
innobase_hton->set_cursor_read_view=innobase_set_cursor_view;
|
|
innobase_hton->close_cursor_read_view=innobase_close_cursor_view;
|
|
innobase_hton->create=innobase_create_handler;
|
|
innobase_hton->drop_database=innobase_drop_database;
|
|
innobase_hton->panic=innobase_end;
|
|
innobase_hton->start_consistent_snapshot=innobase_start_trx_and_assign_read_view;
|
|
innobase_hton->flush_logs=innobase_flush_logs;
|
|
innobase_hton->show_status=innobase_show_status;
|
|
innobase_hton->flags=HTON_NO_FLAGS;
|
|
innobase_hton->release_temporary_latches=innobase_release_temporary_latches;
|
|
innobase_hton->alter_table_flags = innobase_alter_table_flags;
|
|
|
|
ut_a(DATA_MYSQL_TRUE_VARCHAR == (ulint)MYSQL_TYPE_VARCHAR);
|
|
|
|
#ifdef UNIV_DEBUG
|
|
static const char test_filename[] = "-@";
|
|
char test_tablename[sizeof test_filename
|
|
+ sizeof srv_mysql50_table_name_prefix];
|
|
if ((sizeof test_tablename) - 1
|
|
!= filename_to_tablename(test_filename, test_tablename,
|
|
sizeof test_tablename)
|
|
|| strncmp(test_tablename,
|
|
srv_mysql50_table_name_prefix,
|
|
sizeof srv_mysql50_table_name_prefix)
|
|
|| strcmp(test_tablename
|
|
+ sizeof srv_mysql50_table_name_prefix,
|
|
test_filename)) {
|
|
sql_print_error("tablename encoding has been changed");
|
|
goto error;
|
|
}
|
|
#endif /* UNIV_DEBUG */
|
|
|
|
/* Check that values don't overflow on 32-bit systems. */
|
|
if (sizeof(ulint) == 4) {
|
|
if (innobase_buffer_pool_size > UINT_MAX32) {
|
|
sql_print_error(
|
|
"innobase_buffer_pool_size can't be over 4GB"
|
|
" on 32-bit systems");
|
|
|
|
goto error;
|
|
}
|
|
|
|
if (innobase_log_file_size > UINT_MAX32) {
|
|
sql_print_error(
|
|
"innobase_log_file_size can't be over 4GB"
|
|
" on 32-bit systems");
|
|
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
os_innodb_umask = (ulint)my_umask;
|
|
|
|
/* First calculate the default path for innodb_data_home_dir etc.,
|
|
in case the user has not given any value.
|
|
|
|
Note that when using the embedded server, the datadirectory is not
|
|
necessarily the current directory of this program. */
|
|
|
|
if (mysqld_embedded) {
|
|
default_path = mysql_real_data_home;
|
|
fil_path_to_mysql_datadir = mysql_real_data_home;
|
|
} else {
|
|
/* It's better to use current lib, to keep paths short */
|
|
current_dir[0] = FN_CURLIB;
|
|
current_dir[1] = FN_LIBCHAR;
|
|
current_dir[2] = 0;
|
|
default_path = current_dir;
|
|
}
|
|
|
|
ut_a(default_path);
|
|
|
|
if (specialflag & SPECIAL_NO_PRIOR) {
|
|
srv_set_thread_priorities = FALSE;
|
|
} else {
|
|
srv_set_thread_priorities = TRUE;
|
|
srv_query_thread_priority = QUERY_PRIOR;
|
|
}
|
|
|
|
/* Set InnoDB initialization parameters according to the values
|
|
read from MySQL .cnf file */
|
|
|
|
/*--------------- Data files -------------------------*/
|
|
|
|
/* The default dir for data files is the datadir of MySQL */
|
|
|
|
srv_data_home = (innobase_data_home_dir ? innobase_data_home_dir :
|
|
default_path);
|
|
|
|
/* Set default InnoDB data file size to 10 MB and let it be
|
|
auto-extending. Thus users can use InnoDB in >= 4.0 without having
|
|
to specify any startup options. */
|
|
|
|
if (!innobase_data_file_path) {
|
|
innobase_data_file_path = (char*) "ibdata1:10M:autoextend";
|
|
}
|
|
|
|
/* Since InnoDB edits the argument in the next call, we make another
|
|
copy of it: */
|
|
|
|
internal_innobase_data_file_path = my_strdup(innobase_data_file_path,
|
|
MYF(MY_FAE));
|
|
|
|
ret = (bool) srv_parse_data_file_paths_and_sizes(
|
|
internal_innobase_data_file_path,
|
|
&srv_data_file_names,
|
|
&srv_data_file_sizes,
|
|
&srv_data_file_is_raw_partition,
|
|
&srv_n_data_files,
|
|
&srv_auto_extend_last_data_file,
|
|
&srv_last_file_size_max);
|
|
if (ret == FALSE) {
|
|
sql_print_error(
|
|
"InnoDB: syntax error in innodb_data_file_path");
|
|
my_free(internal_innobase_data_file_path,
|
|
MYF(MY_ALLOW_ZERO_PTR));
|
|
goto error;
|
|
}
|
|
|
|
/* -------------- Log files ---------------------------*/
|
|
|
|
/* The default dir for log files is the datadir of MySQL */
|
|
|
|
if (!innobase_log_group_home_dir) {
|
|
innobase_log_group_home_dir = default_path;
|
|
}
|
|
|
|
#ifdef UNIV_LOG_ARCHIVE
|
|
/* Since innodb_log_arch_dir has no relevance under MySQL,
|
|
starting from 4.0.6 we always set it the same as
|
|
innodb_log_group_home_dir: */
|
|
|
|
innobase_log_arch_dir = innobase_log_group_home_dir;
|
|
|
|
srv_arch_dir = innobase_log_arch_dir;
|
|
#endif /* UNIG_LOG_ARCHIVE */
|
|
|
|
ret = (bool)
|
|
srv_parse_log_group_home_dirs(innobase_log_group_home_dir,
|
|
&srv_log_group_home_dirs);
|
|
|
|
if (ret == FALSE || innobase_mirrored_log_groups != 1) {
|
|
sql_print_error("syntax error in innodb_log_group_home_dir, or a "
|
|
"wrong number of mirrored log groups");
|
|
|
|
my_free(internal_innobase_data_file_path,
|
|
MYF(MY_ALLOW_ZERO_PTR));
|
|
goto error;
|
|
}
|
|
|
|
/* Validate the file format by animal name */
|
|
if (innobase_file_format_name != NULL) {
|
|
|
|
format_id = innobase_file_format_name_lookup(
|
|
innobase_file_format_name);
|
|
|
|
if (format_id > DICT_TF_FORMAT_MAX) {
|
|
|
|
sql_print_error("InnoDB: wrong innodb_file_format.");
|
|
|
|
my_free(internal_innobase_data_file_path,
|
|
MYF(MY_ALLOW_ZERO_PTR));
|
|
goto error;
|
|
}
|
|
} else {
|
|
/* Set it to the default file format id. Though this
|
|
should never happen. */
|
|
format_id = 0;
|
|
}
|
|
|
|
srv_file_format = format_id;
|
|
|
|
/* Given the type of innobase_file_format_name we have little
|
|
choice but to cast away the constness from the returned name.
|
|
innobase_file_format_name is used in the MySQL set variable
|
|
interface and so can't be const. */
|
|
|
|
innobase_file_format_name =
|
|
(char*) trx_sys_file_format_id_to_name(format_id);
|
|
|
|
/* Process innobase_file_format_check variable */
|
|
ut_a(innobase_file_format_check != NULL);
|
|
|
|
/* As a side effect it will set srv_check_file_format_at_startup
|
|
on valid input. First we check for "on"/"off". */
|
|
if (!innobase_file_format_check_on_off(innobase_file_format_check)) {
|
|
|
|
/* Did the user specify a format name that we support ?
|
|
As a side effect it will update the variable
|
|
srv_check_file_format_at_startup */
|
|
if (!innobase_file_format_check_validate(
|
|
innobase_file_format_check)) {
|
|
|
|
sql_print_error("InnoDB: invalid "
|
|
"innodb_file_format_check value: "
|
|
"should be either 'on' or 'off' or "
|
|
"any value up to %s or its "
|
|
"equivalent numeric id",
|
|
trx_sys_file_format_id_to_name(
|
|
DICT_TF_FORMAT_MAX));
|
|
|
|
my_free(internal_innobase_data_file_path,
|
|
MYF(MY_ALLOW_ZERO_PTR));
|
|
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
ut_a((ulint) ibuf_use < UT_ARR_SIZE(innobase_change_buffering_values));
|
|
innobase_change_buffering = (char*)
|
|
innobase_change_buffering_values[ibuf_use];
|
|
|
|
/* --------------------------------------------------*/
|
|
|
|
srv_file_flush_method_str = innobase_unix_file_flush_method;
|
|
|
|
srv_n_log_groups = (ulint) innobase_mirrored_log_groups;
|
|
srv_n_log_files = (ulint) innobase_log_files_in_group;
|
|
srv_log_file_size = (ulint) innobase_log_file_size;
|
|
|
|
#ifdef UNIV_LOG_ARCHIVE
|
|
srv_log_archive_on = (ulint) innobase_log_archive;
|
|
#endif /* UNIV_LOG_ARCHIVE */
|
|
srv_log_buffer_size = (ulint) innobase_log_buffer_size;
|
|
|
|
srv_buf_pool_size = (ulint) innobase_buffer_pool_size;
|
|
|
|
srv_mem_pool_size = (ulint) innobase_additional_mem_pool_size;
|
|
|
|
srv_n_file_io_threads = (ulint) innobase_file_io_threads;
|
|
|
|
srv_force_recovery = (ulint) innobase_force_recovery;
|
|
|
|
srv_use_doublewrite_buf = (ibool) innobase_use_doublewrite;
|
|
srv_use_checksums = (ibool) innobase_use_checksums;
|
|
|
|
#ifdef HAVE_LARGE_PAGES
|
|
if ((os_use_large_pages = (ibool) my_use_large_pages))
|
|
os_large_page_size = (ulint) opt_large_page_size;
|
|
#endif
|
|
|
|
row_rollback_on_timeout = (ibool) innobase_rollback_on_timeout;
|
|
|
|
srv_locks_unsafe_for_binlog = (ibool) innobase_locks_unsafe_for_binlog;
|
|
|
|
srv_max_n_open_files = (ulint) innobase_open_files;
|
|
srv_innodb_status = (ibool) innobase_create_status_file;
|
|
|
|
btr_search_disabled = (ibool) !innobase_adaptive_hash_index;
|
|
|
|
srv_print_verbose_log = mysqld_embedded ? 0 : 1;
|
|
|
|
/* Store the default charset-collation number of this MySQL
|
|
installation */
|
|
|
|
data_mysql_default_charset_coll = (ulint)default_charset_info->number;
|
|
|
|
ut_a(DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL ==
|
|
my_charset_latin1.number);
|
|
ut_a(DATA_MYSQL_BINARY_CHARSET_COLL == my_charset_bin.number);
|
|
|
|
/* Store the latin1_swedish_ci character ordering table to InnoDB. For
|
|
non-latin1_swedish_ci charsets we use the MySQL comparison functions,
|
|
and consequently we do not need to know the ordering internally in
|
|
InnoDB. */
|
|
|
|
ut_a(0 == strcmp(my_charset_latin1.name, "latin1_swedish_ci"));
|
|
srv_latin1_ordering = my_charset_latin1.sort_order;
|
|
|
|
/* Since we in this module access directly the fields of a trx
|
|
struct, and due to different headers and flags it might happen that
|
|
mutex_t has a different size in this module and in InnoDB
|
|
modules, we check at run time that the size is the same in
|
|
these compilation modules. */
|
|
|
|
err = innobase_start_or_create_for_mysql();
|
|
|
|
if (err != DB_SUCCESS) {
|
|
my_free(internal_innobase_data_file_path,
|
|
MYF(MY_ALLOW_ZERO_PTR));
|
|
goto error;
|
|
}
|
|
|
|
innobase_open_tables = hash_create(200);
|
|
pthread_mutex_init(&innobase_share_mutex, MY_MUTEX_INIT_FAST);
|
|
pthread_mutex_init(&prepare_commit_mutex, MY_MUTEX_INIT_FAST);
|
|
pthread_mutex_init(&commit_threads_m, MY_MUTEX_INIT_FAST);
|
|
pthread_mutex_init(&commit_cond_m, MY_MUTEX_INIT_FAST);
|
|
pthread_cond_init(&commit_cond, NULL);
|
|
innodb_inited= 1;
|
|
#ifdef MYSQL_DYNAMIC_PLUGIN
|
|
if (innobase_hton != p) {
|
|
innobase_hton = reinterpret_cast<handlerton*>(p);
|
|
*innobase_hton = *innodb_hton_ptr;
|
|
}
|
|
#endif /* MYSQL_DYNAMIC_PLUGIN */
|
|
|
|
/* Get the current high water mark format. */
|
|
innobase_file_format_check = (char*) trx_sys_file_format_max_get();
|
|
|
|
DBUG_RETURN(FALSE);
|
|
error:
|
|
DBUG_RETURN(TRUE);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Closes an InnoDB database. */
|
|
static
|
|
int
|
|
innobase_end(handlerton *hton, ha_panic_function type)
|
|
/*==============*/
|
|
/* out: TRUE if error */
|
|
{
|
|
int err= 0;
|
|
|
|
DBUG_ENTER("innobase_end");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
#ifdef __NETWARE__ /* some special cleanup for NetWare */
|
|
if (nw_panic) {
|
|
set_panic_flag_for_netware();
|
|
}
|
|
#endif
|
|
if (innodb_inited) {
|
|
|
|
srv_fast_shutdown = (ulint) innobase_fast_shutdown;
|
|
innodb_inited = 0;
|
|
hash_table_free(innobase_open_tables);
|
|
innobase_open_tables = NULL;
|
|
if (innobase_shutdown_for_mysql() != DB_SUCCESS) {
|
|
err = 1;
|
|
}
|
|
my_free(internal_innobase_data_file_path,
|
|
MYF(MY_ALLOW_ZERO_PTR));
|
|
pthread_mutex_destroy(&innobase_share_mutex);
|
|
pthread_mutex_destroy(&prepare_commit_mutex);
|
|
pthread_mutex_destroy(&commit_threads_m);
|
|
pthread_mutex_destroy(&commit_cond_m);
|
|
pthread_cond_destroy(&commit_cond);
|
|
}
|
|
|
|
DBUG_RETURN(err);
|
|
}
|
|
|
|
/********************************************************************
|
|
Flushes InnoDB logs to disk and makes a checkpoint. Really, a commit flushes
|
|
the logs, and the name of this function should be innobase_checkpoint. */
|
|
static
|
|
bool
|
|
innobase_flush_logs(handlerton *hton)
|
|
/*=====================*/
|
|
/* out: TRUE if error */
|
|
{
|
|
bool result = 0;
|
|
|
|
DBUG_ENTER("innobase_flush_logs");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
log_buffer_flush_to_disk();
|
|
|
|
DBUG_RETURN(result);
|
|
}
|
|
|
|
/********************************************************************
|
|
Return alter table flags supported in an InnoDB database. */
|
|
static
|
|
uint
|
|
innobase_alter_table_flags(
|
|
/*=======================*/
|
|
uint flags)
|
|
{
|
|
return(HA_ONLINE_ADD_INDEX_NO_WRITES
|
|
| HA_ONLINE_DROP_INDEX_NO_WRITES
|
|
| HA_ONLINE_ADD_UNIQUE_INDEX_NO_WRITES
|
|
| HA_ONLINE_DROP_UNIQUE_INDEX_NO_WRITES
|
|
| HA_ONLINE_ADD_PK_INDEX_NO_WRITES);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Commits a transaction in an InnoDB database. */
|
|
static
|
|
void
|
|
innobase_commit_low(
|
|
/*================*/
|
|
trx_t* trx) /* in: transaction handle */
|
|
{
|
|
if (trx->conc_state == TRX_NOT_STARTED) {
|
|
|
|
return;
|
|
}
|
|
|
|
trx_commit_for_mysql(trx);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Creates an InnoDB transaction struct for the thd if it does not yet have one.
|
|
Starts a new InnoDB transaction if a transaction is not yet started. And
|
|
assigns a new snapshot for a consistent read if the transaction does not yet
|
|
have one. */
|
|
static
|
|
int
|
|
innobase_start_trx_and_assign_read_view(
|
|
/*====================================*/
|
|
/* out: 0 */
|
|
handlerton *hton, /* in: Innodb handlerton */
|
|
THD* thd) /* in: MySQL thread handle of the user for whom
|
|
the transaction should be committed */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ENTER("innobase_start_trx_and_assign_read_view");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
/* Create a new trx struct for thd, if it does not yet have one */
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
/* This is just to play safe: release a possible FIFO ticket and
|
|
search latch. Since we will reserve the kernel mutex, we have to
|
|
release the search system latch first to obey the latching order. */
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
/* If the transaction is not started yet, start it */
|
|
|
|
trx_start_if_not_started(trx);
|
|
|
|
/* Assign a read view if the transaction does not have it yet */
|
|
|
|
trx_assign_read_view(trx);
|
|
|
|
/* Set the MySQL flag to mark that there is an active transaction */
|
|
|
|
if (trx->active_trans == 0) {
|
|
innobase_register_trx_and_stmt(hton, thd);
|
|
trx->active_trans = 1;
|
|
}
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Commits a transaction in an InnoDB database or marks an SQL statement
|
|
ended. */
|
|
static
|
|
int
|
|
innobase_commit(
|
|
/*============*/
|
|
/* out: 0 */
|
|
handlerton *hton, /* in: Innodb handlerton */
|
|
THD* thd, /* in: MySQL thread handle of the user for whom
|
|
the transaction should be committed */
|
|
bool all) /* in: TRUE - commit transaction
|
|
FALSE - the current SQL statement ended */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ENTER("innobase_commit");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
DBUG_PRINT("trans", ("ending transaction"));
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
/* Since we will reserve the kernel mutex, we have to release
|
|
the search system latch first to obey the latching order. */
|
|
|
|
if (trx->has_search_latch) {
|
|
trx_search_latch_release_if_reserved(trx);
|
|
}
|
|
|
|
/* The flag trx->active_trans is set to 1 in
|
|
|
|
1. ::external_lock(),
|
|
2. ::start_stmt(),
|
|
3. innobase_query_caching_of_table_permitted(),
|
|
4. innobase_savepoint(),
|
|
5. ::init_table_handle_for_HANDLER(),
|
|
6. innobase_start_trx_and_assign_read_view(),
|
|
7. ::transactional_table_lock()
|
|
|
|
and it is only set to 0 in a commit or a rollback. If it is 0 we know
|
|
there cannot be resources to be freed and we could return immediately.
|
|
For the time being, we play safe and do the cleanup though there should
|
|
be nothing to clean up. */
|
|
|
|
if (trx->active_trans == 0
|
|
&& trx->conc_state != TRX_NOT_STARTED) {
|
|
|
|
sql_print_error("trx->active_trans == 0, but"
|
|
" trx->conc_state != TRX_NOT_STARTED");
|
|
}
|
|
if (all
|
|
|| (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) {
|
|
|
|
/* We were instructed to commit the whole transaction, or
|
|
this is an SQL statement end and autocommit is on */
|
|
|
|
/* We need current binlog position for ibbackup to work.
|
|
Note, the position is current because of
|
|
prepare_commit_mutex */
|
|
retry:
|
|
if (srv_commit_concurrency > 0) {
|
|
pthread_mutex_lock(&commit_cond_m);
|
|
commit_threads++;
|
|
|
|
if (commit_threads > srv_commit_concurrency) {
|
|
commit_threads--;
|
|
pthread_cond_wait(&commit_cond,
|
|
&commit_cond_m);
|
|
pthread_mutex_unlock(&commit_cond_m);
|
|
goto retry;
|
|
}
|
|
else {
|
|
pthread_mutex_unlock(&commit_cond_m);
|
|
}
|
|
}
|
|
|
|
trx->mysql_log_file_name = mysql_bin_log_file_name();
|
|
trx->mysql_log_offset = (ib_int64_t) mysql_bin_log_file_pos();
|
|
|
|
/* Don't do write + flush right now. For group commit
|
|
to work we want to do the flush after releasing the
|
|
prepare_commit_mutex. */
|
|
trx->flush_log_later = TRUE;
|
|
innobase_commit_low(trx);
|
|
trx->flush_log_later = FALSE;
|
|
|
|
if (srv_commit_concurrency > 0) {
|
|
pthread_mutex_lock(&commit_cond_m);
|
|
commit_threads--;
|
|
pthread_cond_signal(&commit_cond);
|
|
pthread_mutex_unlock(&commit_cond_m);
|
|
}
|
|
|
|
if (trx->active_trans == 2) {
|
|
|
|
pthread_mutex_unlock(&prepare_commit_mutex);
|
|
}
|
|
|
|
/* Now do a write + flush of logs. */
|
|
trx_commit_complete_for_mysql(trx);
|
|
trx->active_trans = 0;
|
|
|
|
} else {
|
|
/* We just mark the SQL statement ended and do not do a
|
|
transaction commit */
|
|
|
|
/* If we had reserved the auto-inc lock for some
|
|
table in this SQL statement we release it now */
|
|
|
|
row_unlock_table_autoinc_for_mysql(trx);
|
|
|
|
/* Store the current undo_no of the transaction so that we
|
|
know where to roll back if we have to roll back the next
|
|
SQL statement */
|
|
|
|
trx_mark_sql_stat_end(trx);
|
|
}
|
|
|
|
trx->n_autoinc_rows = 0; /* Reset the number AUTO-INC rows required */
|
|
|
|
if (trx->declared_to_be_inside_innodb) {
|
|
/* Release our possible ticket in the FIFO */
|
|
|
|
srv_conc_force_exit_innodb(trx);
|
|
}
|
|
|
|
/* Tell the InnoDB server that there might be work for utility
|
|
threads: */
|
|
srv_active_wake_master_thread();
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Rolls back a transaction or the latest SQL statement. */
|
|
static
|
|
int
|
|
innobase_rollback(
|
|
/*==============*/
|
|
/* out: 0 or error number */
|
|
handlerton *hton, /* in: Innodb handlerton */
|
|
THD* thd, /* in: handle to the MySQL thread of the user
|
|
whose transaction should be rolled back */
|
|
bool all) /* in: TRUE - commit transaction
|
|
FALSE - the current SQL statement ended */
|
|
{
|
|
int error = 0;
|
|
trx_t* trx;
|
|
|
|
DBUG_ENTER("innobase_rollback");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
DBUG_PRINT("trans", ("aborting transaction"));
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
/* Release a possible FIFO ticket and search latch. Since we will
|
|
reserve the kernel mutex, we have to release the search system latch
|
|
first to obey the latching order. */
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
/* If we had reserved the auto-inc lock for some table (if
|
|
we come here to roll back the latest SQL statement) we
|
|
release it now before a possibly lengthy rollback */
|
|
|
|
row_unlock_table_autoinc_for_mysql(trx);
|
|
|
|
if (all
|
|
|| !thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
|
|
|
|
error = trx_rollback_for_mysql(trx);
|
|
trx->active_trans = 0;
|
|
} else {
|
|
error = trx_rollback_last_sql_stat_for_mysql(trx);
|
|
}
|
|
|
|
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
|
|
}
|
|
|
|
/*********************************************************************
|
|
Rolls back a transaction */
|
|
static
|
|
int
|
|
innobase_rollback_trx(
|
|
/*==================*/
|
|
/* out: 0 or error number */
|
|
trx_t* trx) /* in: transaction */
|
|
{
|
|
int error = 0;
|
|
|
|
DBUG_ENTER("innobase_rollback_trx");
|
|
DBUG_PRINT("trans", ("aborting transaction"));
|
|
|
|
/* Release a possible FIFO ticket and search latch. Since we will
|
|
reserve the kernel mutex, we have to release the search system latch
|
|
first to obey the latching order. */
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
/* If we had reserved the auto-inc lock for some table (if
|
|
we come here to roll back the latest SQL statement) we
|
|
release it now before a possibly lengthy rollback */
|
|
|
|
row_unlock_table_autoinc_for_mysql(trx);
|
|
|
|
error = trx_rollback_for_mysql(trx);
|
|
|
|
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
|
|
}
|
|
|
|
/*********************************************************************
|
|
Rolls back a transaction to a savepoint. */
|
|
static
|
|
int
|
|
innobase_rollback_to_savepoint(
|
|
/*===========================*/
|
|
/* out: 0 if success, HA_ERR_NO_SAVEPOINT if
|
|
no savepoint with the given name */
|
|
handlerton *hton, /* in: Innodb handlerton */
|
|
THD* thd, /* in: handle to the MySQL thread of the user
|
|
whose transaction should be rolled back */
|
|
void* savepoint) /* in: savepoint data */
|
|
{
|
|
ib_int64_t mysql_binlog_cache_pos;
|
|
int error = 0;
|
|
trx_t* trx;
|
|
char name[64];
|
|
|
|
DBUG_ENTER("innobase_rollback_to_savepoint");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
/* Release a possible FIFO ticket and search latch. Since we will
|
|
reserve the kernel mutex, we have to release the search system latch
|
|
first to obey the latching order. */
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
/* TODO: use provided savepoint data area to store savepoint data */
|
|
|
|
longlong2str((ulint)savepoint, name, 36);
|
|
|
|
error = (int) trx_rollback_to_savepoint_for_mysql(trx, name,
|
|
&mysql_binlog_cache_pos);
|
|
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
|
|
}
|
|
|
|
/*********************************************************************
|
|
Release transaction savepoint name. */
|
|
static
|
|
int
|
|
innobase_release_savepoint(
|
|
/*=======================*/
|
|
/* out: 0 if success, HA_ERR_NO_SAVEPOINT if
|
|
no savepoint with the given name */
|
|
handlerton* hton, /* in: handlerton for Innodb */
|
|
THD* thd, /* in: handle to the MySQL thread of the user
|
|
whose transaction should be rolled back */
|
|
void* savepoint) /* in: savepoint data */
|
|
{
|
|
int error = 0;
|
|
trx_t* trx;
|
|
char name[64];
|
|
|
|
DBUG_ENTER("innobase_release_savepoint");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
/* TODO: use provided savepoint data area to store savepoint data */
|
|
|
|
longlong2str((ulint)savepoint, name, 36);
|
|
|
|
error = (int) trx_release_savepoint_for_mysql(trx, name);
|
|
|
|
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
|
|
}
|
|
|
|
/*********************************************************************
|
|
Sets a transaction savepoint. */
|
|
static
|
|
int
|
|
innobase_savepoint(
|
|
/*===============*/
|
|
/* out: always 0, that is, always succeeds */
|
|
handlerton* hton, /* in: handle to the Innodb handlerton */
|
|
THD* thd, /* in: handle to the MySQL thread */
|
|
void* savepoint) /* in: savepoint data */
|
|
{
|
|
int error = 0;
|
|
trx_t* trx;
|
|
|
|
DBUG_ENTER("innobase_savepoint");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
/*
|
|
In the autocommit mode there is no sense to set a savepoint
|
|
(unless we are in sub-statement), so SQL layer ensures that
|
|
this method is never called in such situation.
|
|
*/
|
|
#ifdef MYSQL_SERVER /* plugins cannot access thd->in_sub_stmt */
|
|
DBUG_ASSERT(thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN) ||
|
|
thd->in_sub_stmt);
|
|
#endif /* MYSQL_SERVER */
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
/* Release a possible FIFO ticket and search latch. Since we will
|
|
reserve the kernel mutex, we have to release the search system latch
|
|
first to obey the latching order. */
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
/* cannot happen outside of transaction */
|
|
DBUG_ASSERT(trx->active_trans);
|
|
|
|
/* TODO: use provided savepoint data area to store savepoint data */
|
|
char name[64];
|
|
longlong2str((ulint)savepoint,name,36);
|
|
|
|
error = (int) trx_savepoint_for_mysql(trx, name, (ib_int64_t)0);
|
|
|
|
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));
|
|
}
|
|
|
|
/*********************************************************************
|
|
Frees a possible InnoDB trx object associated with the current THD. */
|
|
static
|
|
int
|
|
innobase_close_connection(
|
|
/*======================*/
|
|
/* out: 0 or error number */
|
|
handlerton* hton, /* in: innobase handlerton */
|
|
THD* thd) /* in: handle to the MySQL thread of the user
|
|
whose resources should be free'd */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ENTER("innobase_close_connection");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
trx = thd_to_trx(thd);
|
|
|
|
ut_a(trx);
|
|
|
|
if (trx->active_trans == 0
|
|
&& trx->conc_state != TRX_NOT_STARTED) {
|
|
|
|
sql_print_error("trx->active_trans == 0, but"
|
|
" trx->conc_state != TRX_NOT_STARTED");
|
|
}
|
|
|
|
|
|
if (trx->conc_state != TRX_NOT_STARTED &&
|
|
global_system_variables.log_warnings) {
|
|
sql_print_warning(
|
|
"MySQL is closing a connection that has an active "
|
|
"InnoDB transaction. %lu row modifications will "
|
|
"roll back.",
|
|
(ulong) trx->undo_no.low);
|
|
}
|
|
|
|
innobase_rollback_trx(trx);
|
|
|
|
thr_local_free(trx->mysql_thread_id);
|
|
trx_free_for_mysql(trx);
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
** InnoDB database tables
|
|
*****************************************************************************/
|
|
|
|
/********************************************************************
|
|
Get the record format from the data dictionary. */
|
|
UNIV_INTERN
|
|
enum row_type
|
|
ha_innobase::get_row_type() const
|
|
/*=============================*/
|
|
/* out: one of
|
|
ROW_TYPE_REDUNDANT,
|
|
ROW_TYPE_COMPACT,
|
|
ROW_TYPE_COMPRESSED,
|
|
ROW_TYPE_DYNAMIC */
|
|
{
|
|
if (prebuilt && prebuilt->table) {
|
|
const ulint flags = prebuilt->table->flags;
|
|
|
|
if (UNIV_UNLIKELY(!flags)) {
|
|
return(ROW_TYPE_REDUNDANT);
|
|
}
|
|
|
|
ut_ad(flags & DICT_TF_COMPACT);
|
|
|
|
switch (flags & DICT_TF_FORMAT_MASK) {
|
|
case DICT_TF_FORMAT_51 << DICT_TF_FORMAT_SHIFT:
|
|
return(ROW_TYPE_COMPACT);
|
|
case DICT_TF_FORMAT_ZIP << DICT_TF_FORMAT_SHIFT:
|
|
if (flags & DICT_TF_ZSSIZE_MASK) {
|
|
return(ROW_TYPE_COMPRESSED);
|
|
} else {
|
|
return(ROW_TYPE_DYNAMIC);
|
|
}
|
|
#if DICT_TF_FORMAT_ZIP != DICT_TF_FORMAT_MAX
|
|
# error "DICT_TF_FORMAT_ZIP != DICT_TF_FORMAT_MAX"
|
|
#endif
|
|
}
|
|
}
|
|
ut_ad(0);
|
|
return(ROW_TYPE_NOT_USED);
|
|
}
|
|
|
|
|
|
|
|
/********************************************************************
|
|
Get the table flags to use for the statement. */
|
|
UNIV_INTERN
|
|
handler::Table_flags
|
|
ha_innobase::table_flags() const
|
|
{
|
|
/* Need to use tx_isolation here since table flags is (also)
|
|
called before prebuilt is inited. */
|
|
ulong const tx_isolation = thd_tx_isolation(ha_thd());
|
|
if (tx_isolation <= ISO_READ_COMMITTED)
|
|
return int_table_flags;
|
|
return int_table_flags | HA_BINLOG_STMT_CAPABLE;
|
|
}
|
|
|
|
/********************************************************************
|
|
Gives the file extension of an InnoDB single-table tablespace. */
|
|
static const char* ha_innobase_exts[] = {
|
|
".ibd",
|
|
NullS
|
|
};
|
|
|
|
UNIV_INTERN
|
|
const char*
|
|
ha_innobase::table_type() const
|
|
/*===========================*/
|
|
/* out: table type */
|
|
{
|
|
return(innobase_hton_name);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
const char*
|
|
ha_innobase::index_type(uint)
|
|
/*=========================*/
|
|
/* out: index type */
|
|
{
|
|
return("BTREE");
|
|
}
|
|
|
|
UNIV_INTERN
|
|
const char**
|
|
ha_innobase::bas_ext() const
|
|
/*========================*/
|
|
/* out: file extension string */
|
|
{
|
|
return(ha_innobase_exts);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
ulong
|
|
ha_innobase::index_flags(uint, uint, bool) const
|
|
{
|
|
return(HA_READ_NEXT | HA_READ_PREV | HA_READ_ORDER
|
|
| HA_READ_RANGE | HA_KEYREAD_ONLY);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
uint
|
|
ha_innobase::max_supported_keys() const
|
|
{
|
|
return(MAX_KEY);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
uint
|
|
ha_innobase::max_supported_key_length() const
|
|
{
|
|
/* An InnoDB page must store >= 2 keys; a secondary key record
|
|
must also contain the primary key value: max key length is
|
|
therefore set to slightly less than 1 / 4 of page size which
|
|
is 16 kB; but currently MySQL does not work with keys whose
|
|
size is > MAX_KEY_LENGTH */
|
|
return(3500);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
const key_map*
|
|
ha_innobase::keys_to_use_for_scanning()
|
|
{
|
|
return(&key_map_full);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
uint8
|
|
ha_innobase::table_cache_type()
|
|
{
|
|
return(HA_CACHE_TBL_ASKTRANSACT);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
bool
|
|
ha_innobase::primary_key_is_clustered()
|
|
{
|
|
return(true);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Normalizes a table name string. A normalized name consists of the
|
|
database name catenated to '/' and table name. An example:
|
|
test/mytable. On Windows normalization puts both the database name and the
|
|
table name always to lower case. */
|
|
static
|
|
void
|
|
normalize_table_name(
|
|
/*=================*/
|
|
char* norm_name, /* out: normalized name as a
|
|
null-terminated string */
|
|
const char* name) /* in: table name string */
|
|
{
|
|
char* name_ptr;
|
|
char* db_ptr;
|
|
char* ptr;
|
|
|
|
/* Scan name from the end */
|
|
|
|
ptr = strend(name)-1;
|
|
|
|
while (ptr >= name && *ptr != '\\' && *ptr != '/') {
|
|
ptr--;
|
|
}
|
|
|
|
name_ptr = ptr + 1;
|
|
|
|
DBUG_ASSERT(ptr > name);
|
|
|
|
ptr--;
|
|
|
|
while (ptr >= name && *ptr != '\\' && *ptr != '/') {
|
|
ptr--;
|
|
}
|
|
|
|
db_ptr = ptr + 1;
|
|
|
|
memcpy(norm_name, db_ptr, strlen(name) + 1 - (db_ptr - name));
|
|
|
|
norm_name[name_ptr - db_ptr - 1] = '/';
|
|
|
|
#ifdef __WIN__
|
|
innobase_casedn_str(norm_name);
|
|
#endif
|
|
}
|
|
|
|
/************************************************************************
|
|
Set the autoinc column max value. This should only be called once from
|
|
ha_innobase::open(). Therefore there's no need for a covering lock. */
|
|
UNIV_INTERN
|
|
ulint
|
|
ha_innobase::innobase_initialize_autoinc()
|
|
/*======================================*/
|
|
{
|
|
dict_index_t* index;
|
|
ulonglong auto_inc;
|
|
const char* col_name;
|
|
ulint error = DB_SUCCESS;
|
|
dict_table_t* innodb_table = prebuilt->table;
|
|
|
|
col_name = table->found_next_number_field->field_name;
|
|
index = innobase_get_index(table->s->next_number_index);
|
|
|
|
/* Execute SELECT MAX(col_name) FROM TABLE; */
|
|
error = row_search_max_autoinc(index, col_name, &auto_inc);
|
|
|
|
if (error == DB_SUCCESS) {
|
|
|
|
/* At the this stage we dont' know the increment
|
|
or the offset, so use default inrement of 1. */
|
|
++auto_inc;
|
|
|
|
dict_table_autoinc_initialize(innodb_table, auto_inc);
|
|
|
|
} else {
|
|
ut_print_timestamp(stderr);
|
|
fprintf(stderr, " InnoDB: Error: (%lu) Couldn't read "
|
|
"the MAX(%s) autoinc value from the "
|
|
"index (%s).\n", error, col_name, index->name);
|
|
}
|
|
|
|
return(error);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Creates and opens a handle to a table which already exists in an InnoDB
|
|
database. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::open(
|
|
/*==============*/
|
|
/* out: 1 if error, 0 if success */
|
|
const char* name, /* in: table name */
|
|
int mode, /* in: not used */
|
|
uint test_if_locked) /* in: not used */
|
|
{
|
|
dict_table_t* ib_table;
|
|
char norm_name[1000];
|
|
THD* thd;
|
|
ulint retries = 0;
|
|
char* is_part = NULL;
|
|
|
|
DBUG_ENTER("ha_innobase::open");
|
|
|
|
UT_NOT_USED(mode);
|
|
UT_NOT_USED(test_if_locked);
|
|
|
|
thd = ha_thd();
|
|
|
|
/* Under some cases MySQL seems to call this function while
|
|
holding btr_search_latch. This breaks the latching order as
|
|
we acquire dict_sys->mutex below and leads to a deadlock. */
|
|
if (thd != NULL) {
|
|
innobase_release_temporary_latches(ht, thd);
|
|
}
|
|
|
|
normalize_table_name(norm_name, name);
|
|
|
|
user_thd = NULL;
|
|
|
|
if (!(share=get_share(name))) {
|
|
|
|
DBUG_RETURN(1);
|
|
}
|
|
|
|
/* Create buffers for packing the fields of a record. Why
|
|
table->reclength did not work here? Obviously, because char
|
|
fields when packed actually became 1 byte longer, when we also
|
|
stored the string length as the first byte. */
|
|
|
|
upd_and_key_val_buff_len =
|
|
table->s->reclength + table->s->max_key_length
|
|
+ MAX_REF_PARTS * 3;
|
|
if (!(uchar*) my_multi_malloc(MYF(MY_WME),
|
|
&upd_buff, upd_and_key_val_buff_len,
|
|
&key_val_buff, upd_and_key_val_buff_len,
|
|
NullS)) {
|
|
free_share(share);
|
|
|
|
DBUG_RETURN(1);
|
|
}
|
|
|
|
/* We look for pattern #P# to see if the table is partitioned
|
|
MySQL table. The retry logic for partitioned tables is a
|
|
workaround for http://bugs.mysql.com/bug.php?id=33349. Look
|
|
at support issue https://support.mysql.com/view.php?id=21080
|
|
for more details. */
|
|
is_part = strstr(norm_name, "#P#");
|
|
retry:
|
|
/* Get pointer to a table object in InnoDB dictionary cache */
|
|
ib_table = dict_table_get(norm_name, TRUE);
|
|
|
|
if (NULL == ib_table) {
|
|
if (is_part && retries < 10) {
|
|
++retries;
|
|
os_thread_sleep(100000);
|
|
goto retry;
|
|
}
|
|
|
|
if (is_part) {
|
|
sql_print_error("Failed to open table %s after "
|
|
"%lu attemtps.\n", norm_name,
|
|
retries);
|
|
}
|
|
|
|
sql_print_error("Cannot find or open table %s from\n"
|
|
"the internal data dictionary of InnoDB "
|
|
"though the .frm file for the\n"
|
|
"table exists. Maybe you have deleted and "
|
|
"recreated InnoDB data\n"
|
|
"files but have forgotten to delete the "
|
|
"corresponding .frm files\n"
|
|
"of InnoDB tables, or you have moved .frm "
|
|
"files to another database?\n"
|
|
"or, the table contains indexes that this "
|
|
"version of the engine\n"
|
|
"doesn't support.\n"
|
|
"See http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n"
|
|
"how you can resolve the problem.\n",
|
|
norm_name);
|
|
free_share(share);
|
|
my_free(upd_buff, MYF(0));
|
|
my_errno = ENOENT;
|
|
|
|
DBUG_RETURN(HA_ERR_NO_SUCH_TABLE);
|
|
}
|
|
|
|
if (ib_table->ibd_file_missing && !thd_tablespace_op(thd)) {
|
|
sql_print_error("MySQL is trying to open a table handle but "
|
|
"the .ibd file for\ntable %s does not exist.\n"
|
|
"Have you deleted the .ibd file from the "
|
|
"database directory under\nthe MySQL datadir, "
|
|
"or have you used DISCARD TABLESPACE?\n"
|
|
"See http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n"
|
|
"how you can resolve the problem.\n",
|
|
norm_name);
|
|
free_share(share);
|
|
my_free(upd_buff, MYF(0));
|
|
my_errno = ENOENT;
|
|
|
|
dict_table_decrement_handle_count(ib_table, FALSE);
|
|
DBUG_RETURN(HA_ERR_NO_SUCH_TABLE);
|
|
}
|
|
|
|
prebuilt = row_create_prebuilt(ib_table);
|
|
|
|
prebuilt->mysql_row_len = table->s->reclength;
|
|
prebuilt->default_rec = table->s->default_values;
|
|
ut_ad(prebuilt->default_rec);
|
|
|
|
/* Looks like MySQL-3.23 sometimes has primary key number != 0 */
|
|
|
|
primary_key = table->s->primary_key;
|
|
key_used_on_scan = primary_key;
|
|
|
|
/* Allocate a buffer for a 'row reference'. A row reference is
|
|
a string of bytes of length ref_length which uniquely specifies
|
|
a row in our table. Note that MySQL may also compare two row
|
|
references for equality by doing a simple memcmp on the strings
|
|
of length ref_length! */
|
|
|
|
if (!row_table_got_default_clust_index(ib_table)) {
|
|
if (primary_key >= MAX_KEY) {
|
|
sql_print_error("Table %s has a primary key in InnoDB data "
|
|
"dictionary, but not in MySQL!", name);
|
|
}
|
|
|
|
prebuilt->clust_index_was_generated = FALSE;
|
|
|
|
/* MySQL allocates the buffer for ref. key_info->key_length
|
|
includes space for all key columns + one byte for each column
|
|
that may be NULL. ref_length must be as exact as possible to
|
|
save space, because all row reference buffers are allocated
|
|
based on ref_length. */
|
|
|
|
ref_length = table->key_info[primary_key].key_length;
|
|
} else {
|
|
if (primary_key != MAX_KEY) {
|
|
sql_print_error("Table %s has no primary key in InnoDB data "
|
|
"dictionary, but has one in MySQL! If you "
|
|
"created the table with a MySQL version < "
|
|
"3.23.54 and did not define a primary key, "
|
|
"but defined a unique key with all non-NULL "
|
|
"columns, then MySQL internally treats that "
|
|
"key as the primary key. You can fix this "
|
|
"error by dump + DROP + CREATE + reimport "
|
|
"of the table.", name);
|
|
}
|
|
|
|
prebuilt->clust_index_was_generated = TRUE;
|
|
|
|
ref_length = DATA_ROW_ID_LEN;
|
|
|
|
/* If we automatically created the clustered index, then
|
|
MySQL does not know about it, and MySQL must NOT be aware
|
|
of the index used on scan, to make it avoid checking if we
|
|
update the column of the index. That is why we assert below
|
|
that key_used_on_scan is the undefined value MAX_KEY.
|
|
The column is the row id in the automatical generation case,
|
|
and it will never be updated anyway. */
|
|
|
|
if (key_used_on_scan != MAX_KEY) {
|
|
sql_print_warning(
|
|
"Table %s key_used_on_scan is %lu even "
|
|
"though there is no primary key inside "
|
|
"InnoDB.", name, (ulong) key_used_on_scan);
|
|
}
|
|
}
|
|
|
|
/* Index block size in InnoDB: used by MySQL in query optimization */
|
|
stats.block_size = 16 * 1024;
|
|
|
|
/* Init table lock structure */
|
|
thr_lock_data_init(&share->lock,&lock,(void*) 0);
|
|
|
|
if (prebuilt->table) {
|
|
/* We update the highest file format in the system table
|
|
space, if this table has higher file format setting. */
|
|
|
|
trx_sys_file_format_max_upgrade(
|
|
(const char**) &innobase_file_format_check,
|
|
dict_table_get_format(prebuilt->table));
|
|
}
|
|
|
|
info(HA_STATUS_NO_LOCK | HA_STATUS_VARIABLE | HA_STATUS_CONST);
|
|
|
|
/* Only if the table has an AUTOINC column. */
|
|
if (prebuilt->table != NULL && table->found_next_number_field != NULL) {
|
|
ulint error;
|
|
|
|
dict_table_autoinc_lock(prebuilt->table);
|
|
|
|
/* Since a table can already be "open" in InnoDB's internal
|
|
data dictionary, we only init the autoinc counter once, the
|
|
first time the table is loaded. We can safely reuse the
|
|
autoinc value from a previous MySQL open. */
|
|
if (dict_table_autoinc_read(prebuilt->table) == 0) {
|
|
|
|
error = innobase_initialize_autoinc();
|
|
/* Should always succeed! */
|
|
ut_a(error == DB_SUCCESS);
|
|
}
|
|
|
|
dict_table_autoinc_unlock(prebuilt->table);
|
|
}
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
uint
|
|
ha_innobase::max_supported_key_part_length() const
|
|
{
|
|
return(DICT_MAX_INDEX_COL_LEN - 1);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Closes a handle to an InnoDB table. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::close(void)
|
|
/*====================*/
|
|
/* out: 0 */
|
|
{
|
|
THD* thd;
|
|
|
|
DBUG_ENTER("ha_innobase::close");
|
|
|
|
thd = ha_thd();
|
|
if (thd != NULL) {
|
|
innobase_release_temporary_latches(ht, thd);
|
|
}
|
|
|
|
row_prebuilt_free(prebuilt, FALSE);
|
|
|
|
my_free(upd_buff, MYF(0));
|
|
free_share(share);
|
|
|
|
/* Tell InnoDB server that there might be work for
|
|
utility threads: */
|
|
|
|
srv_active_wake_master_thread();
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/* The following accessor functions should really be inside MySQL code! */
|
|
|
|
/******************************************************************
|
|
Gets field offset for a field in a table. */
|
|
static inline
|
|
uint
|
|
get_field_offset(
|
|
/*=============*/
|
|
/* out: offset */
|
|
TABLE* table, /* in: MySQL table object */
|
|
Field* field) /* in: MySQL field object */
|
|
{
|
|
return((uint) (field->ptr - table->record[0]));
|
|
}
|
|
|
|
/******************************************************************
|
|
Checks if a field in a record is SQL NULL. Uses the record format
|
|
information in table to track the null bit in record. */
|
|
static inline
|
|
uint
|
|
field_in_record_is_null(
|
|
/*====================*/
|
|
/* out: 1 if NULL, 0 otherwise */
|
|
TABLE* table, /* in: MySQL table object */
|
|
Field* field, /* in: MySQL field object */
|
|
char* record) /* in: a row in MySQL format */
|
|
{
|
|
int null_offset;
|
|
|
|
if (!field->null_ptr) {
|
|
|
|
return(0);
|
|
}
|
|
|
|
null_offset = (uint) ((char*) field->null_ptr
|
|
- (char*) table->record[0]);
|
|
|
|
if (record[null_offset] & field->null_bit) {
|
|
|
|
return(1);
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/******************************************************************
|
|
Sets a field in a record to SQL NULL. Uses the record format
|
|
information in table to track the null bit in record. */
|
|
static inline
|
|
void
|
|
set_field_in_record_to_null(
|
|
/*========================*/
|
|
TABLE* table, /* in: MySQL table object */
|
|
Field* field, /* in: MySQL field object */
|
|
char* record) /* in: a row in MySQL format */
|
|
{
|
|
int null_offset;
|
|
|
|
null_offset = (uint) ((char*) field->null_ptr
|
|
- (char*) table->record[0]);
|
|
|
|
record[null_offset] = record[null_offset] | field->null_bit;
|
|
}
|
|
|
|
/*****************************************************************
|
|
InnoDB uses this function to compare two data fields for which the data type
|
|
is such that we must use MySQL code to compare them. NOTE that the prototype
|
|
of this function is in rem0cmp.c in InnoDB source code! If you change this
|
|
function, remember to update the prototype there! */
|
|
extern "C" UNIV_INTERN
|
|
int
|
|
innobase_mysql_cmp(
|
|
/*===============*/
|
|
/* out: 1, 0, -1, if a is greater,
|
|
equal, less than b, respectively */
|
|
int mysql_type, /* in: MySQL type */
|
|
uint charset_number, /* in: number of the charset */
|
|
const unsigned char* a, /* in: data field */
|
|
unsigned int a_length, /* in: data field length,
|
|
not UNIV_SQL_NULL */
|
|
const unsigned char* b, /* in: data field */
|
|
unsigned int b_length) /* in: data field length,
|
|
not UNIV_SQL_NULL */
|
|
{
|
|
CHARSET_INFO* charset;
|
|
enum_field_types mysql_tp;
|
|
int ret;
|
|
|
|
DBUG_ASSERT(a_length != UNIV_SQL_NULL);
|
|
DBUG_ASSERT(b_length != UNIV_SQL_NULL);
|
|
|
|
mysql_tp = (enum_field_types) mysql_type;
|
|
|
|
switch (mysql_tp) {
|
|
|
|
case MYSQL_TYPE_BIT:
|
|
case MYSQL_TYPE_STRING:
|
|
case MYSQL_TYPE_VAR_STRING:
|
|
case MYSQL_TYPE_TINY_BLOB:
|
|
case MYSQL_TYPE_MEDIUM_BLOB:
|
|
case MYSQL_TYPE_BLOB:
|
|
case MYSQL_TYPE_LONG_BLOB:
|
|
case MYSQL_TYPE_VARCHAR:
|
|
/* Use the charset number to pick the right charset struct for
|
|
the comparison. Since the MySQL function get_charset may be
|
|
slow before Bar removes the mutex operation there, we first
|
|
look at 2 common charsets directly. */
|
|
|
|
if (charset_number == default_charset_info->number) {
|
|
charset = default_charset_info;
|
|
} else if (charset_number == my_charset_latin1.number) {
|
|
charset = &my_charset_latin1;
|
|
} else {
|
|
charset = get_charset(charset_number, MYF(MY_WME));
|
|
|
|
if (charset == NULL) {
|
|
sql_print_error("InnoDB needs charset %lu for doing "
|
|
"a comparison, but MySQL cannot "
|
|
"find that charset.",
|
|
(ulong) charset_number);
|
|
ut_a(0);
|
|
}
|
|
}
|
|
|
|
/* Starting from 4.1.3, we use strnncollsp() in comparisons of
|
|
non-latin1_swedish_ci strings. NOTE that the collation order
|
|
changes then: 'b\0\0...' is ordered BEFORE 'b ...'. Users
|
|
having indexes on such data need to rebuild their tables! */
|
|
|
|
ret = charset->coll->strnncollsp(charset,
|
|
a, a_length,
|
|
b, b_length, 0);
|
|
if (ret < 0) {
|
|
return(-1);
|
|
} else if (ret > 0) {
|
|
return(1);
|
|
} else {
|
|
return(0);
|
|
}
|
|
default:
|
|
ut_error;
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/******************************************************************
|
|
Converts a MySQL type to an InnoDB type. Note that this function returns
|
|
the 'mtype' of InnoDB. InnoDB differentiates between MySQL's old <= 4.1
|
|
VARCHAR and the new true VARCHAR in >= 5.0.3 by the 'prtype'. */
|
|
extern "C" UNIV_INTERN
|
|
ulint
|
|
get_innobase_type_from_mysql_type(
|
|
/*==============================*/
|
|
/* out: DATA_BINARY,
|
|
DATA_VARCHAR, ... */
|
|
ulint* unsigned_flag, /* out: DATA_UNSIGNED if an
|
|
'unsigned type';
|
|
at least ENUM and SET,
|
|
and unsigned integer
|
|
types are 'unsigned types' */
|
|
const void* f) /* in: MySQL Field */
|
|
{
|
|
const class Field* field = reinterpret_cast<const class Field*>(f);
|
|
|
|
/* The following asserts try to check that the MySQL type code fits in
|
|
8 bits: this is used in ibuf and also when DATA_NOT_NULL is ORed to
|
|
the type */
|
|
|
|
DBUG_ASSERT((ulint)MYSQL_TYPE_STRING < 256);
|
|
DBUG_ASSERT((ulint)MYSQL_TYPE_VAR_STRING < 256);
|
|
DBUG_ASSERT((ulint)MYSQL_TYPE_DOUBLE < 256);
|
|
DBUG_ASSERT((ulint)MYSQL_TYPE_FLOAT < 256);
|
|
DBUG_ASSERT((ulint)MYSQL_TYPE_DECIMAL < 256);
|
|
|
|
if (field->flags & UNSIGNED_FLAG) {
|
|
|
|
*unsigned_flag = DATA_UNSIGNED;
|
|
} else {
|
|
*unsigned_flag = 0;
|
|
}
|
|
|
|
if (field->real_type() == MYSQL_TYPE_ENUM
|
|
|| field->real_type() == MYSQL_TYPE_SET) {
|
|
|
|
/* MySQL has field->type() a string type for these, but the
|
|
data is actually internally stored as an unsigned integer
|
|
code! */
|
|
|
|
*unsigned_flag = DATA_UNSIGNED; /* MySQL has its own unsigned
|
|
flag set to zero, even though
|
|
internally this is an unsigned
|
|
integer type */
|
|
return(DATA_INT);
|
|
}
|
|
|
|
switch (field->type()) {
|
|
/* NOTE that we only allow string types in DATA_MYSQL and
|
|
DATA_VARMYSQL */
|
|
case MYSQL_TYPE_VAR_STRING: /* old <= 4.1 VARCHAR */
|
|
case MYSQL_TYPE_VARCHAR: /* new >= 5.0.3 true VARCHAR */
|
|
if (field->binary()) {
|
|
return(DATA_BINARY);
|
|
} else if (strcmp(
|
|
field->charset()->name,
|
|
"latin1_swedish_ci") == 0) {
|
|
return(DATA_VARCHAR);
|
|
} else {
|
|
return(DATA_VARMYSQL);
|
|
}
|
|
case MYSQL_TYPE_BIT:
|
|
case MYSQL_TYPE_STRING: if (field->binary()) {
|
|
|
|
return(DATA_FIXBINARY);
|
|
} else if (strcmp(
|
|
field->charset()->name,
|
|
"latin1_swedish_ci") == 0) {
|
|
return(DATA_CHAR);
|
|
} else {
|
|
return(DATA_MYSQL);
|
|
}
|
|
case MYSQL_TYPE_NEWDECIMAL:
|
|
return(DATA_FIXBINARY);
|
|
case MYSQL_TYPE_LONG:
|
|
case MYSQL_TYPE_LONGLONG:
|
|
case MYSQL_TYPE_TINY:
|
|
case MYSQL_TYPE_SHORT:
|
|
case MYSQL_TYPE_INT24:
|
|
case MYSQL_TYPE_DATE:
|
|
case MYSQL_TYPE_DATETIME:
|
|
case MYSQL_TYPE_YEAR:
|
|
case MYSQL_TYPE_NEWDATE:
|
|
case MYSQL_TYPE_TIME:
|
|
case MYSQL_TYPE_TIMESTAMP:
|
|
return(DATA_INT);
|
|
case MYSQL_TYPE_FLOAT:
|
|
return(DATA_FLOAT);
|
|
case MYSQL_TYPE_DOUBLE:
|
|
return(DATA_DOUBLE);
|
|
case MYSQL_TYPE_DECIMAL:
|
|
return(DATA_DECIMAL);
|
|
case MYSQL_TYPE_GEOMETRY:
|
|
case MYSQL_TYPE_TINY_BLOB:
|
|
case MYSQL_TYPE_MEDIUM_BLOB:
|
|
case MYSQL_TYPE_BLOB:
|
|
case MYSQL_TYPE_LONG_BLOB:
|
|
return(DATA_BLOB);
|
|
default:
|
|
ut_error;
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Writes an unsigned integer value < 64k to 2 bytes, in the little-endian
|
|
storage format. */
|
|
static inline
|
|
void
|
|
innobase_write_to_2_little_endian(
|
|
/*==============================*/
|
|
byte* buf, /* in: where to store */
|
|
ulint val) /* in: value to write, must be < 64k */
|
|
{
|
|
ut_a(val < 256 * 256);
|
|
|
|
buf[0] = (byte)(val & 0xFF);
|
|
buf[1] = (byte)(val / 256);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Reads an unsigned integer value < 64k from 2 bytes, in the little-endian
|
|
storage format. */
|
|
static inline
|
|
uint
|
|
innobase_read_from_2_little_endian(
|
|
/*===============================*/
|
|
/* out: value */
|
|
const uchar* buf) /* in: from where to read */
|
|
{
|
|
return (uint) ((ulint)(buf[0]) + 256 * ((ulint)(buf[1])));
|
|
}
|
|
|
|
/***********************************************************************
|
|
Stores a key value for a row to a buffer. */
|
|
UNIV_INTERN
|
|
uint
|
|
ha_innobase::store_key_val_for_row(
|
|
/*===============================*/
|
|
/* out: key value length as stored in buff */
|
|
uint keynr, /* in: key number */
|
|
char* buff, /* in/out: buffer for the key value (in MySQL
|
|
format) */
|
|
uint buff_len,/* in: buffer length */
|
|
const uchar* record)/* in: row in MySQL format */
|
|
{
|
|
KEY* key_info = table->key_info + keynr;
|
|
KEY_PART_INFO* key_part = key_info->key_part;
|
|
KEY_PART_INFO* end = key_part + key_info->key_parts;
|
|
char* buff_start = buff;
|
|
enum_field_types mysql_type;
|
|
Field* field;
|
|
ibool is_null;
|
|
|
|
DBUG_ENTER("store_key_val_for_row");
|
|
|
|
/* The format for storing a key field in MySQL is the following:
|
|
|
|
1. If the column can be NULL, then in the first byte we put 1 if the
|
|
field value is NULL, 0 otherwise.
|
|
|
|
2. If the column is of a BLOB type (it must be a column prefix field
|
|
in this case), then we put the length of the data in the field to the
|
|
next 2 bytes, in the little-endian format. If the field is SQL NULL,
|
|
then these 2 bytes are set to 0. Note that the length of data in the
|
|
field is <= column prefix length.
|
|
|
|
3. In a column prefix field, prefix_len next bytes are reserved for
|
|
data. In a normal field the max field length next bytes are reserved
|
|
for data. For a VARCHAR(n) the max field length is n. If the stored
|
|
value is the SQL NULL then these data bytes are set to 0.
|
|
|
|
4. We always use a 2 byte length for a true >= 5.0.3 VARCHAR. Note that
|
|
in the MySQL row format, the length is stored in 1 or 2 bytes,
|
|
depending on the maximum allowed length. But in the MySQL key value
|
|
format, the length always takes 2 bytes.
|
|
|
|
We have to zero-fill the buffer so that MySQL is able to use a
|
|
simple memcmp to compare two key values to determine if they are
|
|
equal. MySQL does this to compare contents of two 'ref' values. */
|
|
|
|
bzero(buff, buff_len);
|
|
|
|
for (; key_part != end; key_part++) {
|
|
is_null = FALSE;
|
|
|
|
if (key_part->null_bit) {
|
|
if (record[key_part->null_offset]
|
|
& key_part->null_bit) {
|
|
*buff = 1;
|
|
is_null = TRUE;
|
|
} else {
|
|
*buff = 0;
|
|
}
|
|
buff++;
|
|
}
|
|
|
|
field = key_part->field;
|
|
mysql_type = field->type();
|
|
|
|
if (mysql_type == MYSQL_TYPE_VARCHAR) {
|
|
/* >= 5.0.3 true VARCHAR */
|
|
ulint lenlen;
|
|
ulint len;
|
|
const byte* data;
|
|
ulint key_len;
|
|
ulint true_len;
|
|
CHARSET_INFO* cs;
|
|
int error=0;
|
|
|
|
key_len = key_part->length;
|
|
|
|
if (is_null) {
|
|
buff += key_len + 2;
|
|
|
|
continue;
|
|
}
|
|
cs = field->charset();
|
|
|
|
lenlen = (ulint)
|
|
(((Field_varstring*)field)->length_bytes);
|
|
|
|
data = row_mysql_read_true_varchar(&len,
|
|
(byte*) (record
|
|
+ (ulint)get_field_offset(table, field)),
|
|
lenlen);
|
|
|
|
true_len = len;
|
|
|
|
/* For multi byte character sets we need to calculate
|
|
the true length of the key */
|
|
|
|
if (len > 0 && cs->mbmaxlen > 1) {
|
|
true_len = (ulint) cs->cset->well_formed_len(cs,
|
|
(const char *) data,
|
|
(const char *) data + len,
|
|
(uint) (key_len /
|
|
cs->mbmaxlen),
|
|
&error);
|
|
}
|
|
|
|
/* In a column prefix index, we may need to truncate
|
|
the stored value: */
|
|
|
|
if (true_len > key_len) {
|
|
true_len = key_len;
|
|
}
|
|
|
|
/* The length in a key value is always stored in 2
|
|
bytes */
|
|
|
|
row_mysql_store_true_var_len((byte*)buff, true_len, 2);
|
|
buff += 2;
|
|
|
|
memcpy(buff, data, true_len);
|
|
|
|
/* Note that we always reserve the maximum possible
|
|
length of the true VARCHAR in the key value, though
|
|
only len first bytes after the 2 length bytes contain
|
|
actual data. The rest of the space was reset to zero
|
|
in the bzero() call above. */
|
|
|
|
buff += key_len;
|
|
|
|
} else if (mysql_type == MYSQL_TYPE_TINY_BLOB
|
|
|| mysql_type == MYSQL_TYPE_MEDIUM_BLOB
|
|
|| mysql_type == MYSQL_TYPE_BLOB
|
|
|| mysql_type == MYSQL_TYPE_LONG_BLOB) {
|
|
|
|
CHARSET_INFO* cs;
|
|
ulint key_len;
|
|
ulint true_len;
|
|
int error=0;
|
|
ulint blob_len;
|
|
const byte* blob_data;
|
|
|
|
ut_a(key_part->key_part_flag & HA_PART_KEY_SEG);
|
|
|
|
key_len = key_part->length;
|
|
|
|
if (is_null) {
|
|
buff += key_len + 2;
|
|
|
|
continue;
|
|
}
|
|
|
|
cs = field->charset();
|
|
|
|
blob_data = row_mysql_read_blob_ref(&blob_len,
|
|
(byte*) (record
|
|
+ (ulint)get_field_offset(table, field)),
|
|
(ulint) field->pack_length());
|
|
|
|
true_len = blob_len;
|
|
|
|
ut_a(get_field_offset(table, field)
|
|
== key_part->offset);
|
|
|
|
/* For multi byte character sets we need to calculate
|
|
the true length of the key */
|
|
|
|
if (blob_len > 0 && cs->mbmaxlen > 1) {
|
|
true_len = (ulint) cs->cset->well_formed_len(cs,
|
|
(const char *) blob_data,
|
|
(const char *) blob_data
|
|
+ blob_len,
|
|
(uint) (key_len /
|
|
cs->mbmaxlen),
|
|
&error);
|
|
}
|
|
|
|
/* All indexes on BLOB and TEXT are column prefix
|
|
indexes, and we may need to truncate the data to be
|
|
stored in the key value: */
|
|
|
|
if (true_len > key_len) {
|
|
true_len = key_len;
|
|
}
|
|
|
|
/* MySQL reserves 2 bytes for the length and the
|
|
storage of the number is little-endian */
|
|
|
|
innobase_write_to_2_little_endian(
|
|
(byte*)buff, true_len);
|
|
buff += 2;
|
|
|
|
memcpy(buff, blob_data, true_len);
|
|
|
|
/* Note that we always reserve the maximum possible
|
|
length of the BLOB prefix in the key value. */
|
|
|
|
buff += key_len;
|
|
} else {
|
|
/* Here we handle all other data types except the
|
|
true VARCHAR, BLOB and TEXT. Note that the column
|
|
value we store may be also in a column prefix
|
|
index. */
|
|
|
|
CHARSET_INFO* cs;
|
|
ulint true_len;
|
|
ulint key_len;
|
|
const uchar* src_start;
|
|
int error=0;
|
|
enum_field_types real_type;
|
|
|
|
key_len = key_part->length;
|
|
|
|
if (is_null) {
|
|
buff += key_len;
|
|
|
|
continue;
|
|
}
|
|
|
|
src_start = record + key_part->offset;
|
|
real_type = field->real_type();
|
|
true_len = key_len;
|
|
|
|
/* Character set for the field is defined only
|
|
to fields whose type is string and real field
|
|
type is not enum or set. For these fields check
|
|
if character set is multi byte. */
|
|
|
|
if (real_type != MYSQL_TYPE_ENUM
|
|
&& real_type != MYSQL_TYPE_SET
|
|
&& ( mysql_type == MYSQL_TYPE_VAR_STRING
|
|
|| mysql_type == MYSQL_TYPE_STRING)) {
|
|
|
|
cs = field->charset();
|
|
|
|
/* For multi byte character sets we need to
|
|
calculate the true length of the key */
|
|
|
|
if (key_len > 0 && cs->mbmaxlen > 1) {
|
|
|
|
true_len = (ulint)
|
|
cs->cset->well_formed_len(cs,
|
|
(const char *)src_start,
|
|
(const char *)src_start
|
|
+ key_len,
|
|
(uint) (key_len /
|
|
cs->mbmaxlen),
|
|
&error);
|
|
}
|
|
}
|
|
|
|
memcpy(buff, src_start, true_len);
|
|
buff += true_len;
|
|
|
|
/* Pad the unused space with spaces. Note that no
|
|
padding is ever needed for UCS-2 because in MySQL,
|
|
all UCS2 characters are 2 bytes, as MySQL does not
|
|
support surrogate pairs, which are needed to represent
|
|
characters in the range U+10000 to U+10FFFF. */
|
|
|
|
if (true_len < key_len) {
|
|
ulint pad_len = key_len - true_len;
|
|
memset(buff, ' ', pad_len);
|
|
buff += pad_len;
|
|
}
|
|
}
|
|
}
|
|
|
|
ut_a(buff <= buff_start + buff_len);
|
|
|
|
DBUG_RETURN((uint)(buff - buff_start));
|
|
}
|
|
|
|
/******************************************************************
|
|
Builds a 'template' to the prebuilt struct. The template is used in fast
|
|
retrieval of just those column values MySQL needs in its processing. */
|
|
static
|
|
void
|
|
build_template(
|
|
/*===========*/
|
|
row_prebuilt_t* prebuilt, /* in/out: prebuilt struct */
|
|
THD* thd, /* in: current user thread, used
|
|
only if templ_type is
|
|
ROW_MYSQL_REC_FIELDS */
|
|
TABLE* table, /* in: MySQL table */
|
|
uint templ_type) /* in: ROW_MYSQL_WHOLE_ROW or
|
|
ROW_MYSQL_REC_FIELDS */
|
|
{
|
|
dict_index_t* index;
|
|
dict_index_t* clust_index;
|
|
mysql_row_templ_t* templ;
|
|
Field* field;
|
|
ulint n_fields;
|
|
ulint n_requested_fields = 0;
|
|
ibool fetch_all_in_key = FALSE;
|
|
ibool fetch_primary_key_cols = FALSE;
|
|
ulint i;
|
|
/* byte offset of the end of last requested column */
|
|
ulint mysql_prefix_len = 0;
|
|
|
|
if (prebuilt->select_lock_type == LOCK_X) {
|
|
/* We always retrieve the whole clustered index record if we
|
|
use exclusive row level locks, for example, if the read is
|
|
done in an UPDATE statement. */
|
|
|
|
templ_type = ROW_MYSQL_WHOLE_ROW;
|
|
}
|
|
|
|
if (templ_type == ROW_MYSQL_REC_FIELDS) {
|
|
if (prebuilt->hint_need_to_fetch_extra_cols
|
|
== ROW_RETRIEVE_ALL_COLS) {
|
|
|
|
/* We know we must at least fetch all columns in the
|
|
key, or all columns in the table */
|
|
|
|
if (prebuilt->read_just_key) {
|
|
/* MySQL has instructed us that it is enough
|
|
to fetch the columns in the key; looks like
|
|
MySQL can set this flag also when there is
|
|
only a prefix of the column in the key: in
|
|
that case we retrieve the whole column from
|
|
the clustered index */
|
|
|
|
fetch_all_in_key = TRUE;
|
|
} else {
|
|
templ_type = ROW_MYSQL_WHOLE_ROW;
|
|
}
|
|
} else if (prebuilt->hint_need_to_fetch_extra_cols
|
|
== ROW_RETRIEVE_PRIMARY_KEY) {
|
|
/* We must at least fetch all primary key cols. Note
|
|
that if the clustered index was internally generated
|
|
by InnoDB on the row id (no primary key was
|
|
defined), then row_search_for_mysql() will always
|
|
retrieve the row id to a special buffer in the
|
|
prebuilt struct. */
|
|
|
|
fetch_primary_key_cols = TRUE;
|
|
}
|
|
}
|
|
|
|
clust_index = dict_table_get_first_index(prebuilt->table);
|
|
|
|
if (templ_type == ROW_MYSQL_REC_FIELDS) {
|
|
index = prebuilt->index;
|
|
} else {
|
|
index = clust_index;
|
|
}
|
|
|
|
if (index == clust_index) {
|
|
prebuilt->need_to_access_clustered = TRUE;
|
|
} else {
|
|
prebuilt->need_to_access_clustered = FALSE;
|
|
/* Below we check column by column if we need to access
|
|
the clustered index */
|
|
}
|
|
|
|
n_fields = (ulint)table->s->fields; /* number of columns */
|
|
|
|
if (!prebuilt->mysql_template) {
|
|
prebuilt->mysql_template = (mysql_row_templ_t*)
|
|
mem_alloc(n_fields * sizeof(mysql_row_templ_t));
|
|
}
|
|
|
|
prebuilt->template_type = templ_type;
|
|
prebuilt->null_bitmap_len = table->s->null_bytes;
|
|
|
|
prebuilt->templ_contains_blob = FALSE;
|
|
|
|
/* Note that in InnoDB, i is the column number. MySQL calls columns
|
|
'fields'. */
|
|
for (i = 0; i < n_fields; i++) {
|
|
templ = prebuilt->mysql_template + n_requested_fields;
|
|
field = table->field[i];
|
|
|
|
if (UNIV_LIKELY(templ_type == ROW_MYSQL_REC_FIELDS)) {
|
|
/* Decide which columns we should fetch
|
|
and which we can skip. */
|
|
register const ibool index_contains_field =
|
|
dict_index_contains_col_or_prefix(index, i);
|
|
|
|
if (!index_contains_field && prebuilt->read_just_key) {
|
|
/* If this is a 'key read', we do not need
|
|
columns that are not in the key */
|
|
|
|
goto skip_field;
|
|
}
|
|
|
|
if (index_contains_field && fetch_all_in_key) {
|
|
/* This field is needed in the query */
|
|
|
|
goto include_field;
|
|
}
|
|
|
|
if (bitmap_is_set(table->read_set, i) ||
|
|
bitmap_is_set(table->write_set, i)) {
|
|
/* This field is needed in the query */
|
|
|
|
goto include_field;
|
|
}
|
|
|
|
if (fetch_primary_key_cols
|
|
&& dict_table_col_in_clustered_key(
|
|
index->table, i)) {
|
|
/* This field is needed in the query */
|
|
|
|
goto include_field;
|
|
}
|
|
|
|
/* This field is not needed in the query, skip it */
|
|
|
|
goto skip_field;
|
|
}
|
|
include_field:
|
|
n_requested_fields++;
|
|
|
|
templ->col_no = i;
|
|
|
|
if (index == clust_index) {
|
|
templ->rec_field_no = dict_col_get_clust_pos(
|
|
&index->table->cols[i], index);
|
|
} else {
|
|
templ->rec_field_no = dict_index_get_nth_col_pos(
|
|
index, i);
|
|
}
|
|
|
|
if (templ->rec_field_no == ULINT_UNDEFINED) {
|
|
prebuilt->need_to_access_clustered = TRUE;
|
|
}
|
|
|
|
if (field->null_ptr) {
|
|
templ->mysql_null_byte_offset =
|
|
(ulint) ((char*) field->null_ptr
|
|
- (char*) table->record[0]);
|
|
|
|
templ->mysql_null_bit_mask = (ulint) field->null_bit;
|
|
} else {
|
|
templ->mysql_null_bit_mask = 0;
|
|
}
|
|
|
|
templ->mysql_col_offset = (ulint)
|
|
get_field_offset(table, field);
|
|
|
|
templ->mysql_col_len = (ulint) field->pack_length();
|
|
if (mysql_prefix_len < templ->mysql_col_offset
|
|
+ templ->mysql_col_len) {
|
|
mysql_prefix_len = templ->mysql_col_offset
|
|
+ templ->mysql_col_len;
|
|
}
|
|
templ->type = index->table->cols[i].mtype;
|
|
templ->mysql_type = (ulint)field->type();
|
|
|
|
if (templ->mysql_type == DATA_MYSQL_TRUE_VARCHAR) {
|
|
templ->mysql_length_bytes = (ulint)
|
|
(((Field_varstring*)field)->length_bytes);
|
|
}
|
|
|
|
templ->charset = dtype_get_charset_coll(
|
|
index->table->cols[i].prtype);
|
|
templ->mbminlen = index->table->cols[i].mbminlen;
|
|
templ->mbmaxlen = index->table->cols[i].mbmaxlen;
|
|
templ->is_unsigned = index->table->cols[i].prtype
|
|
& DATA_UNSIGNED;
|
|
if (templ->type == DATA_BLOB) {
|
|
prebuilt->templ_contains_blob = TRUE;
|
|
}
|
|
skip_field:
|
|
;
|
|
}
|
|
|
|
prebuilt->n_template = n_requested_fields;
|
|
prebuilt->mysql_prefix_len = mysql_prefix_len;
|
|
|
|
if (index != clust_index && prebuilt->need_to_access_clustered) {
|
|
/* Change rec_field_no's to correspond to the clustered index
|
|
record */
|
|
for (i = 0; i < n_requested_fields; i++) {
|
|
templ = prebuilt->mysql_template + i;
|
|
|
|
templ->rec_field_no = dict_col_get_clust_pos(
|
|
&index->table->cols[templ->col_no],
|
|
clust_index);
|
|
}
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
Get the upper limit of the MySQL integral type. */
|
|
UNIV_INTERN
|
|
ulonglong
|
|
ha_innobase::innobase_get_int_col_max_value(
|
|
/*========================================*/
|
|
const Field* field)
|
|
{
|
|
ulonglong max_value = 0;
|
|
|
|
switch(field->key_type()) {
|
|
/* TINY */
|
|
case HA_KEYTYPE_BINARY:
|
|
max_value = 0xFFULL;
|
|
break;
|
|
case HA_KEYTYPE_INT8:
|
|
max_value = 0x7FULL;
|
|
break;
|
|
/* SHORT */
|
|
case HA_KEYTYPE_USHORT_INT:
|
|
max_value = 0xFFFFULL;
|
|
break;
|
|
case HA_KEYTYPE_SHORT_INT:
|
|
max_value = 0x7FFFULL;
|
|
break;
|
|
/* MEDIUM */
|
|
case HA_KEYTYPE_UINT24:
|
|
max_value = 0xFFFFFFULL;
|
|
break;
|
|
case HA_KEYTYPE_INT24:
|
|
max_value = 0x7FFFFFULL;
|
|
break;
|
|
/* LONG */
|
|
case HA_KEYTYPE_ULONG_INT:
|
|
max_value = 0xFFFFFFFFULL;
|
|
break;
|
|
case HA_KEYTYPE_LONG_INT:
|
|
max_value = 0x7FFFFFFFULL;
|
|
break;
|
|
/* BIG */
|
|
case HA_KEYTYPE_ULONGLONG:
|
|
max_value = 0xFFFFFFFFFFFFFFFFULL;
|
|
break;
|
|
case HA_KEYTYPE_LONGLONG:
|
|
max_value = 0x7FFFFFFFFFFFFFFFULL;
|
|
break;
|
|
default:
|
|
ut_error;
|
|
}
|
|
|
|
return(max_value);
|
|
}
|
|
|
|
/************************************************************************
|
|
This special handling is really to overcome the limitations of MySQL's
|
|
binlogging. We need to eliminate the non-determinism that will arise in
|
|
INSERT ... SELECT type of statements, since MySQL binlog only stores the
|
|
min value of the autoinc interval. Once that is fixed we can get rid of
|
|
the special lock handling.*/
|
|
UNIV_INTERN
|
|
ulint
|
|
ha_innobase::innobase_lock_autoinc(void)
|
|
/*====================================*/
|
|
/* out: DB_SUCCESS if all OK else
|
|
error code */
|
|
{
|
|
ulint error = DB_SUCCESS;
|
|
|
|
switch (innobase_autoinc_lock_mode) {
|
|
case AUTOINC_NO_LOCKING:
|
|
/* Acquire only the AUTOINC mutex. */
|
|
dict_table_autoinc_lock(prebuilt->table);
|
|
break;
|
|
|
|
case AUTOINC_NEW_STYLE_LOCKING:
|
|
/* For simple (single/multi) row INSERTs, we fallback to the
|
|
old style only if another transaction has already acquired
|
|
the AUTOINC lock on behalf of a LOAD FILE or INSERT ... SELECT
|
|
etc. type of statement. */
|
|
if (thd_sql_command(user_thd) == SQLCOM_INSERT
|
|
|| thd_sql_command(user_thd) == SQLCOM_REPLACE) {
|
|
dict_table_t* table = prebuilt->table;
|
|
|
|
/* Acquire the AUTOINC mutex. */
|
|
dict_table_autoinc_lock(table);
|
|
|
|
/* We need to check that another transaction isn't
|
|
already holding the AUTOINC lock on the table. */
|
|
if (table->n_waiting_or_granted_auto_inc_locks) {
|
|
/* Release the mutex to avoid deadlocks. */
|
|
dict_table_autoinc_unlock(table);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
/* Fall through to old style locking. */
|
|
|
|
case AUTOINC_OLD_STYLE_LOCKING:
|
|
error = row_lock_table_autoinc_for_mysql(prebuilt);
|
|
|
|
if (error == DB_SUCCESS) {
|
|
|
|
/* Acquire the AUTOINC mutex. */
|
|
dict_table_autoinc_lock(prebuilt->table);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
ut_error;
|
|
}
|
|
|
|
return(ulong(error));
|
|
}
|
|
|
|
/************************************************************************
|
|
Reset the autoinc value in the table.*/
|
|
UNIV_INTERN
|
|
ulint
|
|
ha_innobase::innobase_reset_autoinc(
|
|
/*================================*/
|
|
/* out: DB_SUCCESS if all went well
|
|
else error code */
|
|
ulonglong autoinc) /* in: value to store */
|
|
{
|
|
ulint error;
|
|
|
|
error = innobase_lock_autoinc();
|
|
|
|
if (error == DB_SUCCESS) {
|
|
|
|
dict_table_autoinc_initialize(prebuilt->table, autoinc);
|
|
|
|
dict_table_autoinc_unlock(prebuilt->table);
|
|
}
|
|
|
|
return(ulong(error));
|
|
}
|
|
|
|
/************************************************************************
|
|
Store the autoinc value in the table. The autoinc value is only set if
|
|
it's greater than the existing autoinc value in the table.*/
|
|
UNIV_INTERN
|
|
ulint
|
|
ha_innobase::innobase_set_max_autoinc(
|
|
/*==================================*/
|
|
/* out: DB_SUCCES if all went well
|
|
else error code */
|
|
ulonglong auto_inc) /* in: value to store */
|
|
{
|
|
ulint error;
|
|
|
|
error = innobase_lock_autoinc();
|
|
|
|
if (error == DB_SUCCESS) {
|
|
|
|
dict_table_autoinc_update_if_greater(prebuilt->table, auto_inc);
|
|
|
|
dict_table_autoinc_unlock(prebuilt->table);
|
|
}
|
|
|
|
return(ulong(error));
|
|
}
|
|
|
|
/************************************************************************
|
|
Stores a row in an InnoDB database, to the table specified in this
|
|
handle. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::write_row(
|
|
/*===================*/
|
|
/* out: error code */
|
|
uchar* record) /* in: a row in MySQL format */
|
|
{
|
|
int error = 0;
|
|
ibool auto_inc_used= FALSE;
|
|
ulint sql_command;
|
|
trx_t* trx = thd_to_trx(user_thd);
|
|
|
|
DBUG_ENTER("ha_innobase::write_row");
|
|
|
|
if (prebuilt->trx != trx) {
|
|
sql_print_error("The transaction object for the table handle is at "
|
|
"%p, but for the current thread it is at %p",
|
|
(const void*) prebuilt->trx, (const void*) trx);
|
|
|
|
fputs("InnoDB: Dump of 200 bytes around prebuilt: ", stderr);
|
|
ut_print_buf(stderr, ((const byte*)prebuilt) - 100, 200);
|
|
fputs("\n"
|
|
"InnoDB: Dump of 200 bytes around ha_data: ",
|
|
stderr);
|
|
ut_print_buf(stderr, ((const byte*) trx) - 100, 200);
|
|
putc('\n', stderr);
|
|
ut_error;
|
|
}
|
|
|
|
ha_statistic_increment(&SSV::ha_write_count);
|
|
|
|
if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_INSERT)
|
|
table->timestamp_field->set_time();
|
|
|
|
sql_command = thd_sql_command(user_thd);
|
|
|
|
if ((sql_command == SQLCOM_ALTER_TABLE
|
|
|| sql_command == SQLCOM_OPTIMIZE
|
|
|| sql_command == SQLCOM_CREATE_INDEX
|
|
|| sql_command == SQLCOM_DROP_INDEX)
|
|
&& num_write_row >= 10000) {
|
|
/* ALTER TABLE is COMMITted at every 10000 copied rows.
|
|
The IX table lock for the original table has to be re-issued.
|
|
As this method will be called on a temporary table where the
|
|
contents of the original table is being copied to, it is
|
|
a bit tricky to determine the source table. The cursor
|
|
position in the source table need not be adjusted after the
|
|
intermediate COMMIT, since writes by other transactions are
|
|
being blocked by a MySQL table lock TL_WRITE_ALLOW_READ. */
|
|
|
|
dict_table_t* src_table;
|
|
enum lock_mode mode;
|
|
|
|
num_write_row = 0;
|
|
|
|
/* Commit the transaction. This will release the table
|
|
locks, so they have to be acquired again. */
|
|
|
|
/* Altering an InnoDB table */
|
|
/* Get the source table. */
|
|
src_table = lock_get_src_table(
|
|
prebuilt->trx, prebuilt->table, &mode);
|
|
if (!src_table) {
|
|
no_commit:
|
|
/* Unknown situation: do not commit */
|
|
/*
|
|
ut_print_timestamp(stderr);
|
|
fprintf(stderr,
|
|
" InnoDB: ALTER TABLE is holding lock"
|
|
" on %lu tables!\n",
|
|
prebuilt->trx->mysql_n_tables_locked);
|
|
*/
|
|
;
|
|
} else if (src_table == prebuilt->table) {
|
|
/* Source table is not in InnoDB format:
|
|
no need to re-acquire locks on it. */
|
|
|
|
/* Altering to InnoDB format */
|
|
innobase_commit(ht, user_thd, 1);
|
|
/* Note that this transaction is still active. */
|
|
prebuilt->trx->active_trans = 1;
|
|
/* We will need an IX lock on the destination table. */
|
|
prebuilt->sql_stat_start = TRUE;
|
|
} else {
|
|
/* Ensure that there are no other table locks than
|
|
LOCK_IX and LOCK_AUTO_INC on the destination table. */
|
|
|
|
if (!lock_is_table_exclusive(prebuilt->table,
|
|
prebuilt->trx)) {
|
|
goto no_commit;
|
|
}
|
|
|
|
/* Commit the transaction. This will release the table
|
|
locks, so they have to be acquired again. */
|
|
innobase_commit(ht, user_thd, 1);
|
|
/* Note that this transaction is still active. */
|
|
prebuilt->trx->active_trans = 1;
|
|
/* Re-acquire the table lock on the source table. */
|
|
row_lock_table_for_mysql(prebuilt, src_table, mode);
|
|
/* We will need an IX lock on the destination table. */
|
|
prebuilt->sql_stat_start = TRUE;
|
|
}
|
|
}
|
|
|
|
num_write_row++;
|
|
|
|
/* This is the case where the table has an auto-increment column */
|
|
if (table->next_number_field && record == table->record[0]) {
|
|
|
|
/* Reset the error code before calling
|
|
innobase_get_auto_increment(). */
|
|
prebuilt->autoinc_error = DB_SUCCESS;
|
|
|
|
if ((error = update_auto_increment())) {
|
|
|
|
/* We don't want to mask autoinc overflow errors. */
|
|
if (prebuilt->autoinc_error != DB_SUCCESS) {
|
|
error = prebuilt->autoinc_error;
|
|
|
|
goto report_error;
|
|
}
|
|
|
|
/* MySQL errors are passed straight back. */
|
|
goto func_exit;
|
|
}
|
|
|
|
auto_inc_used = TRUE;
|
|
}
|
|
|
|
if (prebuilt->mysql_template == NULL
|
|
|| prebuilt->template_type != ROW_MYSQL_WHOLE_ROW) {
|
|
|
|
/* Build the template used in converting quickly between
|
|
the two database formats */
|
|
|
|
build_template(prebuilt, NULL, table, ROW_MYSQL_WHOLE_ROW);
|
|
}
|
|
|
|
innodb_srv_conc_enter_innodb(prebuilt->trx);
|
|
|
|
error = row_insert_for_mysql((byte*) record, prebuilt);
|
|
|
|
/* Handle duplicate key errors */
|
|
if (auto_inc_used) {
|
|
ulint err;
|
|
ulonglong auto_inc;
|
|
ulonglong col_max_value;
|
|
|
|
/* Note the number of rows processed for this statement, used
|
|
by get_auto_increment() to determine the number of AUTO-INC
|
|
values to reserve. This is only useful for a mult-value INSERT
|
|
and is a statement level counter.*/
|
|
if (trx->n_autoinc_rows > 0) {
|
|
--trx->n_autoinc_rows;
|
|
}
|
|
|
|
/* We need the upper limit of the col type to check for
|
|
whether we update the table autoinc counter or not. */
|
|
col_max_value = innobase_get_int_col_max_value(
|
|
table->next_number_field);
|
|
|
|
/* Get the value that MySQL attempted to store in the table.*/
|
|
auto_inc = table->next_number_field->val_int();
|
|
|
|
switch (error) {
|
|
case DB_DUPLICATE_KEY:
|
|
|
|
/* A REPLACE command and LOAD DATA INFILE REPLACE
|
|
handle a duplicate key error themselves, but we
|
|
must update the autoinc counter if we are performing
|
|
those statements. */
|
|
|
|
switch (sql_command) {
|
|
case SQLCOM_LOAD:
|
|
if ((trx->duplicates
|
|
& (TRX_DUP_IGNORE | TRX_DUP_REPLACE))) {
|
|
|
|
goto set_max_autoinc;
|
|
}
|
|
break;
|
|
|
|
case SQLCOM_REPLACE:
|
|
case SQLCOM_INSERT_SELECT:
|
|
case SQLCOM_REPLACE_SELECT:
|
|
goto set_max_autoinc;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case DB_SUCCESS:
|
|
/* If the actual value inserted is greater than
|
|
the upper limit of the interval, then we try and
|
|
update the table upper limit. Note: last_value
|
|
will be 0 if get_auto_increment() was not called.*/
|
|
|
|
if (auto_inc <= col_max_value
|
|
&& auto_inc > prebuilt->autoinc_last_value) {
|
|
set_max_autoinc:
|
|
ut_a(prebuilt->autoinc_increment > 0);
|
|
|
|
ulonglong need;
|
|
ulonglong offset;
|
|
|
|
offset = prebuilt->autoinc_offset;
|
|
need = prebuilt->autoinc_increment;
|
|
|
|
auto_inc = innobase_next_autoinc(
|
|
auto_inc, need, offset, col_max_value);
|
|
|
|
err = innobase_set_max_autoinc(auto_inc);
|
|
|
|
if (err != DB_SUCCESS) {
|
|
error = (int) err;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
innodb_srv_conc_exit_innodb(prebuilt->trx);
|
|
|
|
report_error:
|
|
error = convert_error_code_to_mysql(error, prebuilt->table->flags,
|
|
user_thd);
|
|
|
|
func_exit:
|
|
innobase_active_small();
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Checks which fields have changed in a row and stores information
|
|
of them to an update vector. */
|
|
static
|
|
int
|
|
calc_row_difference(
|
|
/*================*/
|
|
/* out: error number or 0 */
|
|
upd_t* uvect, /* in/out: update vector */
|
|
uchar* old_row, /* in: old row in MySQL format */
|
|
uchar* new_row, /* in: new row in MySQL format */
|
|
struct st_table* table, /* in: table in MySQL data
|
|
dictionary */
|
|
uchar* upd_buff, /* in: buffer to use */
|
|
ulint buff_len, /* in: buffer length */
|
|
row_prebuilt_t* prebuilt, /* in: InnoDB prebuilt struct */
|
|
THD* thd) /* in: user thread */
|
|
{
|
|
uchar* original_upd_buff = upd_buff;
|
|
Field* field;
|
|
enum_field_types field_mysql_type;
|
|
uint n_fields;
|
|
ulint o_len;
|
|
ulint n_len;
|
|
ulint col_pack_len;
|
|
const byte* new_mysql_row_col;
|
|
const byte* o_ptr;
|
|
const byte* n_ptr;
|
|
byte* buf;
|
|
upd_field_t* ufield;
|
|
ulint col_type;
|
|
ulint n_changed = 0;
|
|
dfield_t dfield;
|
|
dict_index_t* clust_index;
|
|
uint i;
|
|
|
|
n_fields = table->s->fields;
|
|
clust_index = dict_table_get_first_index(prebuilt->table);
|
|
|
|
/* We use upd_buff to convert changed fields */
|
|
buf = (byte*) upd_buff;
|
|
|
|
for (i = 0; i < n_fields; i++) {
|
|
field = table->field[i];
|
|
|
|
o_ptr = (const byte*) old_row + get_field_offset(table, field);
|
|
n_ptr = (const byte*) new_row + get_field_offset(table, field);
|
|
|
|
/* Use new_mysql_row_col and col_pack_len save the values */
|
|
|
|
new_mysql_row_col = n_ptr;
|
|
col_pack_len = field->pack_length();
|
|
|
|
o_len = col_pack_len;
|
|
n_len = col_pack_len;
|
|
|
|
/* We use o_ptr and n_ptr to dig up the actual data for
|
|
comparison. */
|
|
|
|
field_mysql_type = field->type();
|
|
|
|
col_type = prebuilt->table->cols[i].mtype;
|
|
|
|
switch (col_type) {
|
|
|
|
case DATA_BLOB:
|
|
o_ptr = row_mysql_read_blob_ref(&o_len, o_ptr, o_len);
|
|
n_ptr = row_mysql_read_blob_ref(&n_len, n_ptr, n_len);
|
|
|
|
break;
|
|
|
|
case DATA_VARCHAR:
|
|
case DATA_BINARY:
|
|
case DATA_VARMYSQL:
|
|
if (field_mysql_type == MYSQL_TYPE_VARCHAR) {
|
|
/* This is a >= 5.0.3 type true VARCHAR where
|
|
the real payload data length is stored in
|
|
1 or 2 bytes */
|
|
|
|
o_ptr = row_mysql_read_true_varchar(
|
|
&o_len, o_ptr,
|
|
(ulint)
|
|
(((Field_varstring*)field)->length_bytes));
|
|
|
|
n_ptr = row_mysql_read_true_varchar(
|
|
&n_len, n_ptr,
|
|
(ulint)
|
|
(((Field_varstring*)field)->length_bytes));
|
|
}
|
|
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
|
|
if (field->null_ptr) {
|
|
if (field_in_record_is_null(table, field,
|
|
(char*) old_row)) {
|
|
o_len = UNIV_SQL_NULL;
|
|
}
|
|
|
|
if (field_in_record_is_null(table, field,
|
|
(char*) new_row)) {
|
|
n_len = UNIV_SQL_NULL;
|
|
}
|
|
}
|
|
|
|
if (o_len != n_len || (o_len != UNIV_SQL_NULL &&
|
|
0 != memcmp(o_ptr, n_ptr, o_len))) {
|
|
/* The field has changed */
|
|
|
|
ufield = uvect->fields + n_changed;
|
|
|
|
/* Let us use a dummy dfield to make the conversion
|
|
from the MySQL column format to the InnoDB format */
|
|
|
|
dict_col_copy_type(prebuilt->table->cols + i,
|
|
dfield_get_type(&dfield));
|
|
|
|
if (n_len != UNIV_SQL_NULL) {
|
|
buf = row_mysql_store_col_in_innobase_format(
|
|
&dfield,
|
|
(byte*)buf,
|
|
TRUE,
|
|
new_mysql_row_col,
|
|
col_pack_len,
|
|
dict_table_is_comp(prebuilt->table));
|
|
dfield_copy_data(&ufield->new_val, &dfield);
|
|
} else {
|
|
dfield_set_null(&ufield->new_val);
|
|
}
|
|
|
|
ufield->exp = NULL;
|
|
ufield->orig_len = 0;
|
|
ufield->field_no = dict_col_get_clust_pos(
|
|
&prebuilt->table->cols[i], clust_index);
|
|
n_changed++;
|
|
}
|
|
}
|
|
|
|
uvect->n_fields = n_changed;
|
|
uvect->info_bits = 0;
|
|
|
|
ut_a(buf <= (byte*)original_upd_buff + buff_len);
|
|
|
|
return(0);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Updates a row given as a parameter to a new value. Note that we are given
|
|
whole rows, not just the fields which are updated: this incurs some
|
|
overhead for CPU when we check which fields are actually updated.
|
|
TODO: currently InnoDB does not prevent the 'Halloween problem':
|
|
in a searched update a single row can get updated several times
|
|
if its index columns are updated! */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::update_row(
|
|
/*====================*/
|
|
/* out: error number or 0 */
|
|
const uchar* old_row, /* in: old row in MySQL format */
|
|
uchar* new_row) /* in: new row in MySQL format */
|
|
{
|
|
upd_t* uvect;
|
|
int error = 0;
|
|
trx_t* trx = thd_to_trx(user_thd);
|
|
|
|
DBUG_ENTER("ha_innobase::update_row");
|
|
|
|
ut_a(prebuilt->trx == trx);
|
|
|
|
ha_statistic_increment(&SSV::ha_update_count);
|
|
|
|
if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_UPDATE)
|
|
table->timestamp_field->set_time();
|
|
|
|
if (prebuilt->upd_node) {
|
|
uvect = prebuilt->upd_node->update;
|
|
} else {
|
|
uvect = row_get_prebuilt_update_vector(prebuilt);
|
|
}
|
|
|
|
/* Build an update vector from the modified fields in the rows
|
|
(uses upd_buff of the handle) */
|
|
|
|
calc_row_difference(uvect, (uchar*) old_row, new_row, table,
|
|
upd_buff, (ulint)upd_and_key_val_buff_len,
|
|
prebuilt, user_thd);
|
|
|
|
/* This is not a delete */
|
|
prebuilt->upd_node->is_delete = FALSE;
|
|
|
|
ut_a(prebuilt->template_type == ROW_MYSQL_WHOLE_ROW);
|
|
|
|
innodb_srv_conc_enter_innodb(trx);
|
|
|
|
error = row_update_for_mysql((byte*) old_row, prebuilt);
|
|
|
|
/* We need to do some special AUTOINC handling for the following case:
|
|
|
|
INSERT INTO t (c1,c2) VALUES(x,y) ON DUPLICATE KEY UPDATE ...
|
|
|
|
We need to use the AUTOINC counter that was actually used by
|
|
MySQL in the UPDATE statement, which can be different from the
|
|
value used in the INSERT statement.*/
|
|
|
|
if (error == DB_SUCCESS
|
|
&& table->next_number_field
|
|
&& new_row == table->record[0]
|
|
&& thd_sql_command(user_thd) == SQLCOM_INSERT
|
|
&& (trx->duplicates & (TRX_DUP_IGNORE | TRX_DUP_REPLACE))
|
|
== TRX_DUP_IGNORE) {
|
|
|
|
ulonglong auto_inc;
|
|
ulonglong col_max_value;
|
|
|
|
auto_inc = table->next_number_field->val_int();
|
|
|
|
/* We need the upper limit of the col type to check for
|
|
whether we update the table autoinc counter or not. */
|
|
col_max_value = innobase_get_int_col_max_value(
|
|
table->next_number_field);
|
|
|
|
if (auto_inc <= col_max_value && auto_inc != 0) {
|
|
|
|
ulonglong need;
|
|
ulonglong offset;
|
|
|
|
offset = prebuilt->autoinc_offset;
|
|
need = prebuilt->autoinc_increment;
|
|
|
|
auto_inc = innobase_next_autoinc(
|
|
auto_inc, need, offset, col_max_value);
|
|
|
|
error = innobase_set_max_autoinc(auto_inc);
|
|
}
|
|
}
|
|
|
|
innodb_srv_conc_exit_innodb(trx);
|
|
|
|
error = convert_error_code_to_mysql(error,
|
|
prebuilt->table->flags, user_thd);
|
|
|
|
if (error == 0 /* success */
|
|
&& uvect->n_fields == 0 /* no columns were updated */) {
|
|
|
|
/* This is the same as success, but instructs
|
|
MySQL that the row is not really updated and it
|
|
should not increase the count of updated rows.
|
|
This is fix for http://bugs.mysql.com/29157 */
|
|
error = HA_ERR_RECORD_IS_THE_SAME;
|
|
}
|
|
|
|
/* Tell InnoDB server that there might be work for
|
|
utility threads: */
|
|
|
|
innobase_active_small();
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Deletes a row given as the parameter. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::delete_row(
|
|
/*====================*/
|
|
/* out: error number or 0 */
|
|
const uchar* record) /* in: a row in MySQL format */
|
|
{
|
|
int error = 0;
|
|
trx_t* trx = thd_to_trx(user_thd);
|
|
|
|
DBUG_ENTER("ha_innobase::delete_row");
|
|
|
|
ut_a(prebuilt->trx == trx);
|
|
|
|
ha_statistic_increment(&SSV::ha_delete_count);
|
|
|
|
if (!prebuilt->upd_node) {
|
|
row_get_prebuilt_update_vector(prebuilt);
|
|
}
|
|
|
|
/* This is a delete */
|
|
|
|
prebuilt->upd_node->is_delete = TRUE;
|
|
|
|
innodb_srv_conc_enter_innodb(trx);
|
|
|
|
error = row_update_for_mysql((byte*) record, prebuilt);
|
|
|
|
innodb_srv_conc_exit_innodb(trx);
|
|
|
|
error = convert_error_code_to_mysql(
|
|
error, prebuilt->table->flags, user_thd);
|
|
|
|
/* Tell the InnoDB server that there might be work for
|
|
utility threads: */
|
|
|
|
innobase_active_small();
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Removes a new lock set on a row, if it was not read optimistically. This can
|
|
be called after a row has been read in the processing of an UPDATE or a DELETE
|
|
query, if the option innodb_locks_unsafe_for_binlog is set. */
|
|
UNIV_INTERN
|
|
void
|
|
ha_innobase::unlock_row(void)
|
|
/*=========================*/
|
|
{
|
|
DBUG_ENTER("ha_innobase::unlock_row");
|
|
|
|
/* Consistent read does not take any locks, thus there is
|
|
nothing to unlock. */
|
|
|
|
if (prebuilt->select_lock_type == LOCK_NONE) {
|
|
DBUG_VOID_RETURN;
|
|
}
|
|
|
|
switch (prebuilt->row_read_type) {
|
|
case ROW_READ_WITH_LOCKS:
|
|
if (!srv_locks_unsafe_for_binlog
|
|
&& prebuilt->trx->isolation_level
|
|
!= TRX_ISO_READ_COMMITTED) {
|
|
break;
|
|
}
|
|
/* fall through */
|
|
case ROW_READ_TRY_SEMI_CONSISTENT:
|
|
row_unlock_for_mysql(prebuilt, FALSE);
|
|
break;
|
|
case ROW_READ_DID_SEMI_CONSISTENT:
|
|
prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT;
|
|
break;
|
|
}
|
|
|
|
DBUG_VOID_RETURN;
|
|
}
|
|
|
|
/* See handler.h and row0mysql.h for docs on this function. */
|
|
UNIV_INTERN
|
|
bool
|
|
ha_innobase::was_semi_consistent_read(void)
|
|
/*=======================================*/
|
|
{
|
|
return(prebuilt->row_read_type == ROW_READ_DID_SEMI_CONSISTENT);
|
|
}
|
|
|
|
/* See handler.h and row0mysql.h for docs on this function. */
|
|
UNIV_INTERN
|
|
void
|
|
ha_innobase::try_semi_consistent_read(bool yes)
|
|
/*===========================================*/
|
|
{
|
|
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
|
|
|
|
/* Row read type is set to semi consistent read if this was
|
|
requested by the MySQL and either innodb_locks_unsafe_for_binlog
|
|
option is used or this session is using READ COMMITTED isolation
|
|
level. */
|
|
|
|
if (yes
|
|
&& (srv_locks_unsafe_for_binlog
|
|
|| prebuilt->trx->isolation_level == TRX_ISO_READ_COMMITTED)) {
|
|
prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT;
|
|
} else {
|
|
prebuilt->row_read_type = ROW_READ_WITH_LOCKS;
|
|
}
|
|
}
|
|
|
|
#ifdef ROW_MERGE_IS_INDEX_USABLE
|
|
/**********************************************************************
|
|
Check if an index can be used by the optimizer. */
|
|
UNIV_INTERN
|
|
bool
|
|
ha_innobase::is_index_available(
|
|
/*============================*/
|
|
/* out: true if available else false*/
|
|
uint keynr) /* in: index number to check */
|
|
{
|
|
DBUG_ENTER("ha_innobase::is_index_available");
|
|
|
|
if (table && keynr != MAX_KEY && table->s->keys > 0) {
|
|
const dict_index_t* index;
|
|
const KEY* key = table->key_info + keynr;
|
|
|
|
ut_ad(user_thd == ha_thd());
|
|
ut_a(prebuilt->trx == thd_to_trx(user_thd));
|
|
|
|
index = dict_table_get_index_on_name(
|
|
prebuilt->table, key->name);
|
|
|
|
if (!row_merge_is_index_usable(prebuilt->trx, index)) {
|
|
|
|
DBUG_RETURN(false);
|
|
}
|
|
}
|
|
|
|
DBUG_RETURN(true);
|
|
}
|
|
#endif /* ROW_MERGE_IS_INDEX_USABLE */
|
|
|
|
/**********************************************************************
|
|
Initializes a handle to use an index. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_init(
|
|
/*====================*/
|
|
/* out: 0 or error number */
|
|
uint keynr, /* in: key (index) number */
|
|
bool sorted) /* in: 1 if result MUST be sorted according to index */
|
|
{
|
|
DBUG_ENTER("index_init");
|
|
|
|
DBUG_RETURN(change_active_index(keynr));
|
|
}
|
|
|
|
/**********************************************************************
|
|
Currently does nothing. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_end(void)
|
|
/*========================*/
|
|
{
|
|
int error = 0;
|
|
DBUG_ENTER("index_end");
|
|
active_index=MAX_KEY;
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Converts a search mode flag understood by MySQL to a flag understood
|
|
by InnoDB. */
|
|
static inline
|
|
ulint
|
|
convert_search_mode_to_innobase(
|
|
/*============================*/
|
|
enum ha_rkey_function find_flag)
|
|
{
|
|
switch (find_flag) {
|
|
case HA_READ_KEY_EXACT:
|
|
/* this does not require the index to be UNIQUE */
|
|
return(PAGE_CUR_GE);
|
|
case HA_READ_KEY_OR_NEXT:
|
|
return(PAGE_CUR_GE);
|
|
case HA_READ_KEY_OR_PREV:
|
|
return(PAGE_CUR_LE);
|
|
case HA_READ_AFTER_KEY:
|
|
return(PAGE_CUR_G);
|
|
case HA_READ_BEFORE_KEY:
|
|
return(PAGE_CUR_L);
|
|
case HA_READ_PREFIX:
|
|
return(PAGE_CUR_GE);
|
|
case HA_READ_PREFIX_LAST:
|
|
return(PAGE_CUR_LE);
|
|
case HA_READ_PREFIX_LAST_OR_PREV:
|
|
return(PAGE_CUR_LE);
|
|
/* In MySQL-4.0 HA_READ_PREFIX and HA_READ_PREFIX_LAST always
|
|
pass a complete-field prefix of a key value as the search
|
|
tuple. I.e., it is not allowed that the last field would
|
|
just contain n first bytes of the full field value.
|
|
MySQL uses a 'padding' trick to convert LIKE 'abc%'
|
|
type queries so that it can use as a search tuple
|
|
a complete-field-prefix of a key value. Thus, the InnoDB
|
|
search mode PAGE_CUR_LE_OR_EXTENDS is never used.
|
|
TODO: when/if MySQL starts to use also partial-field
|
|
prefixes, we have to deal with stripping of spaces
|
|
and comparison of non-latin1 char type fields in
|
|
innobase_mysql_cmp() to get PAGE_CUR_LE_OR_EXTENDS to
|
|
work correctly. */
|
|
case HA_READ_MBR_CONTAIN:
|
|
case HA_READ_MBR_INTERSECT:
|
|
case HA_READ_MBR_WITHIN:
|
|
case HA_READ_MBR_DISJOINT:
|
|
case HA_READ_MBR_EQUAL:
|
|
my_error(ER_TABLE_CANT_HANDLE_SPKEYS, MYF(0));
|
|
return(PAGE_CUR_UNSUPP);
|
|
/* do not use "default:" in order to produce a gcc warning:
|
|
enumeration value '...' not handled in switch
|
|
(if -Wswitch or -Wall is used) */
|
|
}
|
|
|
|
my_error(ER_CHECK_NOT_IMPLEMENTED, MYF(0), "this functionality");
|
|
|
|
return(PAGE_CUR_UNSUPP);
|
|
}
|
|
|
|
/*
|
|
BACKGROUND INFO: HOW A SELECT SQL QUERY IS EXECUTED
|
|
---------------------------------------------------
|
|
The following does not cover all the details, but explains how we determine
|
|
the start of a new SQL statement, and what is associated with it.
|
|
|
|
For each table in the database the MySQL interpreter may have several
|
|
table handle instances in use, also in a single SQL query. For each table
|
|
handle instance there is an InnoDB 'prebuilt' struct which contains most
|
|
of the InnoDB data associated with this table handle instance.
|
|
|
|
A) if the user has not explicitly set any MySQL table level locks:
|
|
|
|
1) MySQL calls ::external_lock to set an 'intention' table level lock on
|
|
the table of the handle instance. There we set
|
|
prebuilt->sql_stat_start = TRUE. The flag sql_stat_start should be set
|
|
true if we are taking this table handle instance to use in a new SQL
|
|
statement issued by the user. We also increment trx->n_mysql_tables_in_use.
|
|
|
|
2) If prebuilt->sql_stat_start == TRUE we 'pre-compile' the MySQL search
|
|
instructions to prebuilt->template of the table handle instance in
|
|
::index_read. The template is used to save CPU time in large joins.
|
|
|
|
3) In row_search_for_mysql, if prebuilt->sql_stat_start is true, we
|
|
allocate a new consistent read view for the trx if it does not yet have one,
|
|
or in the case of a locking read, set an InnoDB 'intention' table level
|
|
lock on the table.
|
|
|
|
4) We do the SELECT. MySQL may repeatedly call ::index_read for the
|
|
same table handle instance, if it is a join.
|
|
|
|
5) When the SELECT ends, MySQL removes its intention table level locks
|
|
in ::external_lock. When trx->n_mysql_tables_in_use drops to zero,
|
|
(a) we execute a COMMIT there if the autocommit is on,
|
|
(b) we also release possible 'SQL statement level resources' InnoDB may
|
|
have for this SQL statement. The MySQL interpreter does NOT execute
|
|
autocommit for pure read transactions, though it should. That is why the
|
|
table handler in that case has to execute the COMMIT in ::external_lock.
|
|
|
|
B) If the user has explicitly set MySQL table level locks, then MySQL
|
|
does NOT call ::external_lock at the start of the statement. To determine
|
|
when we are at the start of a new SQL statement we at the start of
|
|
::index_read also compare the query id to the latest query id where the
|
|
table handle instance was used. If it has changed, we know we are at the
|
|
start of a new SQL statement. Since the query id can theoretically
|
|
overwrap, we use this test only as a secondary way of determining the
|
|
start of a new SQL statement. */
|
|
|
|
|
|
/**************************************************************************
|
|
Positions an index cursor to the index specified in the handle. Fetches the
|
|
row if any. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_read(
|
|
/*====================*/
|
|
/* out: 0, HA_ERR_KEY_NOT_FOUND,
|
|
or error number */
|
|
uchar* buf, /* in/out: buffer for the returned
|
|
row */
|
|
const uchar* key_ptr, /* in: key value; if this is NULL
|
|
we position the cursor at the
|
|
start or end of index; this can
|
|
also contain an InnoDB row id, in
|
|
which case key_len is the InnoDB
|
|
row id length; the key value can
|
|
also be a prefix of a full key value,
|
|
and the last column can be a prefix
|
|
of a full column */
|
|
uint key_len,/* in: key value length */
|
|
enum ha_rkey_function find_flag)/* in: search flags from my_base.h */
|
|
{
|
|
ulint mode;
|
|
dict_index_t* index;
|
|
ulint match_mode = 0;
|
|
int error;
|
|
ulint ret;
|
|
|
|
DBUG_ENTER("index_read");
|
|
|
|
ut_a(prebuilt->trx == thd_to_trx(user_thd));
|
|
|
|
ha_statistic_increment(&SSV::ha_read_key_count);
|
|
|
|
index = prebuilt->index;
|
|
|
|
/* Note that if the index for which the search template is built is not
|
|
necessarily prebuilt->index, but can also be the clustered index */
|
|
|
|
if (prebuilt->sql_stat_start) {
|
|
build_template(prebuilt, user_thd, table, ROW_MYSQL_REC_FIELDS);
|
|
}
|
|
|
|
if (key_ptr) {
|
|
/* Convert the search key value to InnoDB format into
|
|
prebuilt->search_tuple */
|
|
|
|
row_sel_convert_mysql_key_to_innobase(
|
|
prebuilt->search_tuple,
|
|
(byte*) key_val_buff,
|
|
(ulint)upd_and_key_val_buff_len,
|
|
index,
|
|
(byte*) key_ptr,
|
|
(ulint) key_len,
|
|
prebuilt->trx);
|
|
} else {
|
|
/* We position the cursor to the last or the first entry
|
|
in the index */
|
|
|
|
dtuple_set_n_fields(prebuilt->search_tuple, 0);
|
|
}
|
|
|
|
mode = convert_search_mode_to_innobase(find_flag);
|
|
|
|
match_mode = 0;
|
|
|
|
if (find_flag == HA_READ_KEY_EXACT) {
|
|
|
|
match_mode = ROW_SEL_EXACT;
|
|
|
|
} else if (find_flag == HA_READ_PREFIX
|
|
|| find_flag == HA_READ_PREFIX_LAST) {
|
|
|
|
match_mode = ROW_SEL_EXACT_PREFIX;
|
|
}
|
|
|
|
last_match_mode = (uint) match_mode;
|
|
|
|
if (mode != PAGE_CUR_UNSUPP) {
|
|
|
|
innodb_srv_conc_enter_innodb(prebuilt->trx);
|
|
|
|
ret = row_search_for_mysql((byte*) buf, mode, prebuilt,
|
|
match_mode, 0);
|
|
|
|
innodb_srv_conc_exit_innodb(prebuilt->trx);
|
|
} else {
|
|
|
|
ret = DB_UNSUPPORTED;
|
|
}
|
|
|
|
switch (ret) {
|
|
case DB_SUCCESS:
|
|
error = 0;
|
|
table->status = 0;
|
|
break;
|
|
case DB_RECORD_NOT_FOUND:
|
|
error = HA_ERR_KEY_NOT_FOUND;
|
|
table->status = STATUS_NOT_FOUND;
|
|
break;
|
|
case DB_END_OF_INDEX:
|
|
error = HA_ERR_KEY_NOT_FOUND;
|
|
table->status = STATUS_NOT_FOUND;
|
|
break;
|
|
default:
|
|
error = convert_error_code_to_mysql((int) ret,
|
|
prebuilt->table->flags,
|
|
user_thd);
|
|
table->status = STATUS_NOT_FOUND;
|
|
break;
|
|
}
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/***********************************************************************
|
|
The following functions works like index_read, but it find the last
|
|
row with the current key value or prefix. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_read_last(
|
|
/*=========================*/
|
|
/* out: 0, HA_ERR_KEY_NOT_FOUND, or an
|
|
error code */
|
|
uchar* buf, /* out: fetched row */
|
|
const uchar* key_ptr,/* in: key value, or a prefix of a full
|
|
key value */
|
|
uint key_len)/* in: length of the key val or prefix
|
|
in bytes */
|
|
{
|
|
return(index_read(buf, key_ptr, key_len, HA_READ_PREFIX_LAST));
|
|
}
|
|
|
|
/************************************************************************
|
|
Get the index for a handle. Does not change active index.*/
|
|
UNIV_INTERN
|
|
dict_index_t*
|
|
ha_innobase::innobase_get_index(
|
|
/*============================*/
|
|
/* out: NULL or index instance. */
|
|
uint keynr) /* in: use this index; MAX_KEY means always
|
|
clustered index, even if it was internally
|
|
generated by InnoDB */
|
|
{
|
|
KEY* key = 0;
|
|
dict_index_t* index = 0;
|
|
|
|
DBUG_ENTER("innobase_get_index");
|
|
ha_statistic_increment(&SSV::ha_read_key_count);
|
|
|
|
ut_ad(user_thd == ha_thd());
|
|
ut_a(prebuilt->trx == thd_to_trx(user_thd));
|
|
|
|
if (keynr != MAX_KEY && table->s->keys > 0) {
|
|
key = table->key_info + keynr;
|
|
|
|
index = dict_table_get_index_on_name(prebuilt->table,
|
|
key->name);
|
|
} else {
|
|
index = dict_table_get_first_index(prebuilt->table);
|
|
}
|
|
|
|
if (!index) {
|
|
sql_print_error(
|
|
"Innodb could not find key n:o %u with name %s "
|
|
"from dict cache for table %s",
|
|
keynr, key ? key->name : "NULL",
|
|
prebuilt->table->name);
|
|
}
|
|
|
|
DBUG_RETURN(index);
|
|
}
|
|
|
|
/************************************************************************
|
|
Changes the active index of a handle. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::change_active_index(
|
|
/*=============================*/
|
|
/* out: 0 or error code */
|
|
uint keynr) /* in: use this index; MAX_KEY means always clustered
|
|
index, even if it was internally generated by
|
|
InnoDB */
|
|
{
|
|
DBUG_ENTER("change_active_index");
|
|
|
|
ut_ad(user_thd == ha_thd());
|
|
ut_a(prebuilt->trx == thd_to_trx(user_thd));
|
|
|
|
active_index = keynr;
|
|
|
|
prebuilt->index = innobase_get_index(keynr);
|
|
|
|
if (UNIV_UNLIKELY(!prebuilt->index)) {
|
|
sql_print_warning("InnoDB: change_active_index(%u) failed",
|
|
keynr);
|
|
DBUG_RETURN(1);
|
|
}
|
|
|
|
ut_a(prebuilt->search_tuple != 0);
|
|
|
|
dtuple_set_n_fields(prebuilt->search_tuple, prebuilt->index->n_fields);
|
|
|
|
dict_index_copy_types(prebuilt->search_tuple, prebuilt->index,
|
|
prebuilt->index->n_fields);
|
|
|
|
/* MySQL changes the active index for a handle also during some
|
|
queries, for example SELECT MAX(a), SUM(a) first retrieves the MAX()
|
|
and then calculates the sum. Previously we played safe and used
|
|
the flag ROW_MYSQL_WHOLE_ROW below, but that caused unnecessary
|
|
copying. Starting from MySQL-4.1 we use a more efficient flag here. */
|
|
|
|
build_template(prebuilt, user_thd, table, ROW_MYSQL_REC_FIELDS);
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Positions an index cursor to the index specified in keynr. Fetches the
|
|
row if any. */
|
|
/* ??? This is only used to read whole keys ??? */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_read_idx(
|
|
/*========================*/
|
|
/* out: error number or 0 */
|
|
uchar* buf, /* in/out: buffer for the returned
|
|
row */
|
|
uint keynr, /* in: use this index */
|
|
const uchar* key, /* in: key value; if this is NULL
|
|
we position the cursor at the
|
|
start or end of index */
|
|
uint key_len, /* in: key value length */
|
|
enum ha_rkey_function find_flag)/* in: search flags from my_base.h */
|
|
{
|
|
if (change_active_index(keynr)) {
|
|
|
|
return(1);
|
|
}
|
|
|
|
return(index_read(buf, key, key_len, find_flag));
|
|
}
|
|
|
|
/***************************************************************************
|
|
Reads the next or previous row from a cursor, which must have previously been
|
|
positioned using index_read. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::general_fetch(
|
|
/*=======================*/
|
|
/* out: 0, HA_ERR_END_OF_FILE, or error
|
|
number */
|
|
uchar* buf, /* in/out: buffer for next row in MySQL
|
|
format */
|
|
uint direction, /* in: ROW_SEL_NEXT or ROW_SEL_PREV */
|
|
uint match_mode) /* in: 0, ROW_SEL_EXACT, or
|
|
ROW_SEL_EXACT_PREFIX */
|
|
{
|
|
ulint ret;
|
|
int error = 0;
|
|
|
|
DBUG_ENTER("general_fetch");
|
|
|
|
ut_a(prebuilt->trx == thd_to_trx(user_thd));
|
|
|
|
innodb_srv_conc_enter_innodb(prebuilt->trx);
|
|
|
|
ret = row_search_for_mysql(
|
|
(byte*)buf, 0, prebuilt, match_mode, direction);
|
|
|
|
innodb_srv_conc_exit_innodb(prebuilt->trx);
|
|
|
|
switch (ret) {
|
|
case DB_SUCCESS:
|
|
error = 0;
|
|
table->status = 0;
|
|
break;
|
|
case DB_RECORD_NOT_FOUND:
|
|
error = HA_ERR_END_OF_FILE;
|
|
table->status = STATUS_NOT_FOUND;
|
|
break;
|
|
case DB_END_OF_INDEX:
|
|
error = HA_ERR_END_OF_FILE;
|
|
table->status = STATUS_NOT_FOUND;
|
|
break;
|
|
default:
|
|
error = convert_error_code_to_mysql(
|
|
(int) ret, prebuilt->table->flags, user_thd);
|
|
table->status = STATUS_NOT_FOUND;
|
|
break;
|
|
}
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/***************************************************************************
|
|
Reads the next row from a cursor, which must have previously been
|
|
positioned using index_read. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_next(
|
|
/*====================*/
|
|
/* out: 0, HA_ERR_END_OF_FILE, or error
|
|
number */
|
|
uchar* buf) /* in/out: buffer for next row in MySQL
|
|
format */
|
|
{
|
|
ha_statistic_increment(&SSV::ha_read_next_count);
|
|
|
|
return(general_fetch(buf, ROW_SEL_NEXT, 0));
|
|
}
|
|
|
|
/***********************************************************************
|
|
Reads the next row matching to the key value given as the parameter. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_next_same(
|
|
/*=========================*/
|
|
/* out: 0, HA_ERR_END_OF_FILE, or error
|
|
number */
|
|
uchar* buf, /* in/out: buffer for the row */
|
|
const uchar* key, /* in: key value */
|
|
uint keylen) /* in: key value length */
|
|
{
|
|
ha_statistic_increment(&SSV::ha_read_next_count);
|
|
|
|
return(general_fetch(buf, ROW_SEL_NEXT, last_match_mode));
|
|
}
|
|
|
|
/***************************************************************************
|
|
Reads the previous row from a cursor, which must have previously been
|
|
positioned using index_read. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_prev(
|
|
/*====================*/
|
|
/* out: 0, HA_ERR_END_OF_FILE, or error number */
|
|
uchar* buf) /* in/out: buffer for previous row in MySQL format */
|
|
{
|
|
ha_statistic_increment(&SSV::ha_read_prev_count);
|
|
|
|
return(general_fetch(buf, ROW_SEL_PREV, 0));
|
|
}
|
|
|
|
/************************************************************************
|
|
Positions a cursor on the first record in an index and reads the
|
|
corresponding row to buf. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_first(
|
|
/*=====================*/
|
|
/* out: 0, HA_ERR_END_OF_FILE, or error code */
|
|
uchar* buf) /* in/out: buffer for the row */
|
|
{
|
|
int error;
|
|
|
|
DBUG_ENTER("index_first");
|
|
ha_statistic_increment(&SSV::ha_read_first_count);
|
|
|
|
error = index_read(buf, NULL, 0, HA_READ_AFTER_KEY);
|
|
|
|
/* MySQL does not seem to allow this to return HA_ERR_KEY_NOT_FOUND */
|
|
|
|
if (error == HA_ERR_KEY_NOT_FOUND) {
|
|
error = HA_ERR_END_OF_FILE;
|
|
}
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/************************************************************************
|
|
Positions a cursor on the last record in an index and reads the
|
|
corresponding row to buf. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::index_last(
|
|
/*====================*/
|
|
/* out: 0, HA_ERR_END_OF_FILE, or error code */
|
|
uchar* buf) /* in/out: buffer for the row */
|
|
{
|
|
int error;
|
|
|
|
DBUG_ENTER("index_last");
|
|
ha_statistic_increment(&SSV::ha_read_last_count);
|
|
|
|
error = index_read(buf, NULL, 0, HA_READ_BEFORE_KEY);
|
|
|
|
/* MySQL does not seem to allow this to return HA_ERR_KEY_NOT_FOUND */
|
|
|
|
if (error == HA_ERR_KEY_NOT_FOUND) {
|
|
error = HA_ERR_END_OF_FILE;
|
|
}
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/********************************************************************
|
|
Initialize a table scan. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::rnd_init(
|
|
/*==================*/
|
|
/* out: 0 or error number */
|
|
bool scan) /* in: TRUE if table/index scan FALSE otherwise */
|
|
{
|
|
int err;
|
|
|
|
/* Store the active index value so that we can restore the original
|
|
value after a scan */
|
|
|
|
if (prebuilt->clust_index_was_generated) {
|
|
err = change_active_index(MAX_KEY);
|
|
} else {
|
|
err = change_active_index(primary_key);
|
|
}
|
|
|
|
/* Don't use semi-consistent read in random row reads (by position).
|
|
This means we must disable semi_consistent_read if scan is false */
|
|
|
|
if (!scan) {
|
|
try_semi_consistent_read(0);
|
|
}
|
|
|
|
start_of_scan = 1;
|
|
|
|
return(err);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Ends a table scan. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::rnd_end(void)
|
|
/*======================*/
|
|
/* out: 0 or error number */
|
|
{
|
|
return(index_end());
|
|
}
|
|
|
|
/*********************************************************************
|
|
Reads the next row in a table scan (also used to read the FIRST row
|
|
in a table scan). */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::rnd_next(
|
|
/*==================*/
|
|
/* out: 0, HA_ERR_END_OF_FILE, or error number */
|
|
uchar* buf) /* in/out: returns the row in this buffer,
|
|
in MySQL format */
|
|
{
|
|
int error;
|
|
|
|
DBUG_ENTER("rnd_next");
|
|
ha_statistic_increment(&SSV::ha_read_rnd_next_count);
|
|
|
|
if (start_of_scan) {
|
|
error = index_first(buf);
|
|
|
|
if (error == HA_ERR_KEY_NOT_FOUND) {
|
|
error = HA_ERR_END_OF_FILE;
|
|
}
|
|
|
|
start_of_scan = 0;
|
|
} else {
|
|
error = general_fetch(buf, ROW_SEL_NEXT, 0);
|
|
}
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Fetches a row from the table based on a row reference. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::rnd_pos(
|
|
/*=================*/
|
|
/* out: 0, HA_ERR_KEY_NOT_FOUND, or error code */
|
|
uchar* buf, /* in/out: buffer for the row */
|
|
uchar* pos) /* in: primary key value of the row in the
|
|
MySQL format, or the row id if the clustered
|
|
index was internally generated by InnoDB; the
|
|
length of data in pos has to be ref_length */
|
|
{
|
|
int error;
|
|
uint keynr = active_index;
|
|
DBUG_ENTER("rnd_pos");
|
|
DBUG_DUMP("key", pos, ref_length);
|
|
|
|
ha_statistic_increment(&SSV::ha_read_rnd_count);
|
|
|
|
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
|
|
|
|
if (prebuilt->clust_index_was_generated) {
|
|
/* No primary key was defined for the table and we
|
|
generated the clustered index from the row id: the
|
|
row reference is the row id, not any key value
|
|
that MySQL knows of */
|
|
|
|
error = change_active_index(MAX_KEY);
|
|
} else {
|
|
error = change_active_index(primary_key);
|
|
}
|
|
|
|
if (error) {
|
|
DBUG_PRINT("error", ("Got error: %d", error));
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/* Note that we assume the length of the row reference is fixed
|
|
for the table, and it is == ref_length */
|
|
|
|
error = index_read(buf, pos, ref_length, HA_READ_KEY_EXACT);
|
|
|
|
if (error) {
|
|
DBUG_PRINT("error", ("Got error: %d", error));
|
|
}
|
|
|
|
change_active_index(keynr);
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Stores a reference to the current row to 'ref' field of the handle. Note
|
|
that in the case where we have generated the clustered index for the
|
|
table, the function parameter is illogical: we MUST ASSUME that 'record'
|
|
is the current 'position' of the handle, because if row ref is actually
|
|
the row id internally generated in InnoDB, then 'record' does not contain
|
|
it. We just guess that the row id must be for the record where the handle
|
|
was positioned the last time. */
|
|
UNIV_INTERN
|
|
void
|
|
ha_innobase::position(
|
|
/*==================*/
|
|
const uchar* record) /* in: row in MySQL format */
|
|
{
|
|
uint len;
|
|
|
|
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
|
|
|
|
if (prebuilt->clust_index_was_generated) {
|
|
/* No primary key was defined for the table and we
|
|
generated the clustered index from row id: the
|
|
row reference will be the row id, not any key value
|
|
that MySQL knows of */
|
|
|
|
len = DATA_ROW_ID_LEN;
|
|
|
|
memcpy(ref, prebuilt->row_id, len);
|
|
} else {
|
|
len = store_key_val_for_row(primary_key, (char*)ref,
|
|
ref_length, record);
|
|
}
|
|
|
|
/* We assume that the 'ref' value len is always fixed for the same
|
|
table. */
|
|
|
|
if (len != ref_length) {
|
|
sql_print_error("Stored ref len is %lu, but table ref len is %lu",
|
|
(ulong) len, (ulong) ref_length);
|
|
}
|
|
}
|
|
|
|
/* limit innodb monitor access to users with PROCESS privilege.
|
|
See http://bugs.mysql.com/32710 for expl. why we choose PROCESS. */
|
|
#define IS_MAGIC_TABLE_AND_USER_DENIED_ACCESS(table_name, thd) \
|
|
(row_is_magic_monitor_table(table_name) \
|
|
&& check_global_access(thd, PROCESS_ACL))
|
|
|
|
/*********************************************************************
|
|
Creates a table definition to an InnoDB database. */
|
|
static
|
|
int
|
|
create_table_def(
|
|
/*=============*/
|
|
trx_t* trx, /* in: InnoDB transaction handle */
|
|
TABLE* form, /* in: information on table
|
|
columns and indexes */
|
|
const char* table_name, /* in: table name */
|
|
const char* path_of_temp_table,/* in: if this is a table explicitly
|
|
created by the user with the
|
|
TEMPORARY keyword, then this
|
|
parameter is the dir path where the
|
|
table should be placed if we create
|
|
an .ibd file for it (no .ibd extension
|
|
in the path, though); otherwise this
|
|
is NULL */
|
|
ulint flags) /* in: table flags */
|
|
{
|
|
Field* field;
|
|
dict_table_t* table;
|
|
ulint n_cols;
|
|
int error;
|
|
ulint col_type;
|
|
ulint col_len;
|
|
ulint nulls_allowed;
|
|
ulint unsigned_type;
|
|
ulint binary_type;
|
|
ulint long_true_varchar;
|
|
ulint charset_no;
|
|
ulint i;
|
|
|
|
DBUG_ENTER("create_table_def");
|
|
DBUG_PRINT("enter", ("table_name: %s", table_name));
|
|
|
|
ut_a(trx->mysql_thd != NULL);
|
|
if (IS_MAGIC_TABLE_AND_USER_DENIED_ACCESS(table_name,
|
|
(THD*) trx->mysql_thd)) {
|
|
DBUG_RETURN(HA_ERR_GENERIC);
|
|
}
|
|
|
|
n_cols = form->s->fields;
|
|
|
|
/* We pass 0 as the space id, and determine at a lower level the space
|
|
id where to store the table */
|
|
|
|
table = dict_mem_table_create(table_name, 0, n_cols, flags);
|
|
|
|
if (path_of_temp_table) {
|
|
table->dir_path_of_temp_table =
|
|
mem_heap_strdup(table->heap, path_of_temp_table);
|
|
}
|
|
|
|
for (i = 0; i < n_cols; i++) {
|
|
field = form->field[i];
|
|
|
|
col_type = get_innobase_type_from_mysql_type(&unsigned_type,
|
|
field);
|
|
if (field->null_ptr) {
|
|
nulls_allowed = 0;
|
|
} else {
|
|
nulls_allowed = DATA_NOT_NULL;
|
|
}
|
|
|
|
if (field->binary()) {
|
|
binary_type = DATA_BINARY_TYPE;
|
|
} else {
|
|
binary_type = 0;
|
|
}
|
|
|
|
charset_no = 0;
|
|
|
|
if (dtype_is_string_type(col_type)) {
|
|
|
|
charset_no = (ulint)field->charset()->number;
|
|
|
|
if (UNIV_UNLIKELY(charset_no >= 256)) {
|
|
/* in data0type.h we assume that the
|
|
number fits in one byte in prtype */
|
|
push_warning_printf(
|
|
(THD*) trx->mysql_thd,
|
|
MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_CANT_CREATE_TABLE,
|
|
"In InnoDB, charset-collation codes"
|
|
" must be below 256."
|
|
" Unsupported code %lu.",
|
|
(ulong) charset_no);
|
|
DBUG_RETURN(ER_CANT_CREATE_TABLE);
|
|
}
|
|
}
|
|
|
|
ut_a(field->type() < 256); /* we assume in dtype_form_prtype()
|
|
that this fits in one byte */
|
|
col_len = field->pack_length();
|
|
|
|
/* The MySQL pack length contains 1 or 2 bytes length field
|
|
for a true VARCHAR. Let us subtract that, so that the InnoDB
|
|
column length in the InnoDB data dictionary is the real
|
|
maximum byte length of the actual data. */
|
|
|
|
long_true_varchar = 0;
|
|
|
|
if (field->type() == MYSQL_TYPE_VARCHAR) {
|
|
col_len -= ((Field_varstring*)field)->length_bytes;
|
|
|
|
if (((Field_varstring*)field)->length_bytes == 2) {
|
|
long_true_varchar = DATA_LONG_TRUE_VARCHAR;
|
|
}
|
|
}
|
|
|
|
dict_mem_table_add_col(table, table->heap,
|
|
(char*) field->field_name,
|
|
col_type,
|
|
dtype_form_prtype(
|
|
(ulint)field->type()
|
|
| nulls_allowed | unsigned_type
|
|
| binary_type | long_true_varchar,
|
|
charset_no),
|
|
col_len);
|
|
}
|
|
|
|
error = row_create_table_for_mysql(table, trx);
|
|
|
|
error = convert_error_code_to_mysql(error, flags, NULL);
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Creates an index in an InnoDB database. */
|
|
static
|
|
int
|
|
create_index(
|
|
/*=========*/
|
|
trx_t* trx, /* in: InnoDB transaction handle */
|
|
TABLE* form, /* in: information on table
|
|
columns and indexes */
|
|
ulint flags, /* in: InnoDB table flags */
|
|
const char* table_name, /* in: table name */
|
|
uint key_num) /* in: index number */
|
|
{
|
|
Field* field;
|
|
dict_index_t* index;
|
|
int error;
|
|
ulint n_fields;
|
|
KEY* key;
|
|
KEY_PART_INFO* key_part;
|
|
ulint ind_type;
|
|
ulint col_type;
|
|
ulint prefix_len;
|
|
ulint is_unsigned;
|
|
ulint i;
|
|
ulint j;
|
|
ulint* field_lengths;
|
|
|
|
DBUG_ENTER("create_index");
|
|
|
|
key = form->key_info + key_num;
|
|
|
|
n_fields = key->key_parts;
|
|
|
|
ind_type = 0;
|
|
|
|
if (key_num == form->s->primary_key) {
|
|
ind_type = ind_type | DICT_CLUSTERED;
|
|
}
|
|
|
|
if (key->flags & HA_NOSAME ) {
|
|
ind_type = ind_type | DICT_UNIQUE;
|
|
}
|
|
|
|
/* We pass 0 as the space id, and determine at a lower level the space
|
|
id where to store the table */
|
|
|
|
index = dict_mem_index_create(table_name, key->name, 0,
|
|
ind_type, n_fields);
|
|
|
|
field_lengths = (ulint*) my_malloc(sizeof(ulint) * n_fields,
|
|
MYF(MY_FAE));
|
|
|
|
for (i = 0; i < n_fields; i++) {
|
|
key_part = key->key_part + i;
|
|
|
|
/* (The flag HA_PART_KEY_SEG denotes in MySQL a column prefix
|
|
field in an index: we only store a specified number of first
|
|
bytes of the column to the index field.) The flag does not
|
|
seem to be properly set by MySQL. Let us fall back on testing
|
|
the length of the key part versus the column. */
|
|
|
|
field = NULL;
|
|
for (j = 0; j < form->s->fields; j++) {
|
|
|
|
field = form->field[j];
|
|
|
|
if (0 == innobase_strcasecmp(
|
|
field->field_name,
|
|
key_part->field->field_name)) {
|
|
/* Found the corresponding column */
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
ut_a(j < form->s->fields);
|
|
|
|
col_type = get_innobase_type_from_mysql_type(
|
|
&is_unsigned, key_part->field);
|
|
|
|
if (DATA_BLOB == col_type
|
|
|| (key_part->length < field->pack_length()
|
|
&& field->type() != MYSQL_TYPE_VARCHAR)
|
|
|| (field->type() == MYSQL_TYPE_VARCHAR
|
|
&& key_part->length < field->pack_length()
|
|
- ((Field_varstring*)field)->length_bytes)) {
|
|
|
|
prefix_len = key_part->length;
|
|
|
|
if (col_type == DATA_INT
|
|
|| col_type == DATA_FLOAT
|
|
|| col_type == DATA_DOUBLE
|
|
|| col_type == DATA_DECIMAL) {
|
|
sql_print_error(
|
|
"MySQL is trying to create a column "
|
|
"prefix index field, on an "
|
|
"inappropriate data type. Table "
|
|
"name %s, column name %s.",
|
|
table_name,
|
|
key_part->field->field_name);
|
|
|
|
prefix_len = 0;
|
|
}
|
|
} else {
|
|
prefix_len = 0;
|
|
}
|
|
|
|
field_lengths[i] = key_part->length;
|
|
|
|
dict_mem_index_add_field(index,
|
|
(char*) key_part->field->field_name, prefix_len);
|
|
}
|
|
|
|
/* Even though we've defined max_supported_key_part_length, we
|
|
still do our own checking using field_lengths to be absolutely
|
|
sure we don't create too long indexes. */
|
|
error = row_create_index_for_mysql(index, trx, field_lengths);
|
|
|
|
error = convert_error_code_to_mysql(error, flags, NULL);
|
|
|
|
my_free(field_lengths, MYF(0));
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Creates an index to an InnoDB table when the user has defined no
|
|
primary index. */
|
|
static
|
|
int
|
|
create_clustered_index_when_no_primary(
|
|
/*===================================*/
|
|
trx_t* trx, /* in: InnoDB transaction handle */
|
|
ulint flags, /* in: InnoDB table flags */
|
|
const char* table_name) /* in: table name */
|
|
{
|
|
dict_index_t* index;
|
|
int error;
|
|
|
|
/* We pass 0 as the space id, and determine at a lower level the space
|
|
id where to store the table */
|
|
|
|
index = dict_mem_index_create(table_name, "GEN_CLUST_INDEX",
|
|
0, DICT_CLUSTERED, 0);
|
|
|
|
error = row_create_index_for_mysql(index, trx, NULL);
|
|
|
|
error = convert_error_code_to_mysql(error, flags, NULL);
|
|
|
|
return(error);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Validates the create options. We may build on this function
|
|
in future. For now, it checks two specifiers:
|
|
KEY_BLOCK_SIZE and ROW_FORMAT
|
|
If innodb_strict_mode is not set then this function is a no-op */
|
|
static
|
|
ibool
|
|
create_options_are_valid(
|
|
/*=====================*/
|
|
/* out: TRUE if valid. */
|
|
THD* thd, /* in: connection thread. */
|
|
TABLE* form, /* in: information on table
|
|
columns and indexes */
|
|
HA_CREATE_INFO* create_info) /* in: create info. */
|
|
{
|
|
ibool kbs_specified = FALSE;
|
|
ibool ret = TRUE;
|
|
|
|
|
|
ut_ad(thd != NULL);
|
|
|
|
/* If innodb_strict_mode is not set don't do any validation. */
|
|
if (!(THDVAR(thd, strict_mode))) {
|
|
return(TRUE);
|
|
}
|
|
|
|
ut_ad(form != NULL);
|
|
ut_ad(create_info != NULL);
|
|
|
|
/* First check if KEY_BLOCK_SIZE was specified. */
|
|
if (create_info->key_block_size
|
|
|| (create_info->used_fields & HA_CREATE_USED_KEY_BLOCK_SIZE)) {
|
|
|
|
kbs_specified = TRUE;
|
|
switch (create_info->key_block_size) {
|
|
case 1:
|
|
case 2:
|
|
case 4:
|
|
case 8:
|
|
case 16:
|
|
/* Valid value. */
|
|
break;
|
|
default:
|
|
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: invalid"
|
|
" KEY_BLOCK_SIZE = %lu."
|
|
" Valid values are"
|
|
" [1, 2, 4, 8, 16]",
|
|
create_info->key_block_size);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
|
|
/* If KEY_BLOCK_SIZE was specified, check for its
|
|
dependencies. */
|
|
if (kbs_specified && !srv_file_per_table) {
|
|
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: KEY_BLOCK_SIZE"
|
|
" requires innodb_file_per_table.");
|
|
ret = FALSE;
|
|
}
|
|
|
|
if (kbs_specified && srv_file_format < DICT_TF_FORMAT_ZIP) {
|
|
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: KEY_BLOCK_SIZE"
|
|
" requires innodb_file_format >"
|
|
" Antelope.");
|
|
ret = FALSE;
|
|
}
|
|
|
|
/* Now check for ROW_FORMAT specifier. */
|
|
if (create_info->used_fields & HA_CREATE_USED_ROW_FORMAT) {
|
|
switch (form->s->row_type) {
|
|
const char* row_format_name;
|
|
case ROW_TYPE_COMPRESSED:
|
|
case ROW_TYPE_DYNAMIC:
|
|
row_format_name
|
|
= form->s->row_type == ROW_TYPE_COMPRESSED
|
|
? "COMPRESSED"
|
|
: "DYNAMIC";
|
|
|
|
/* These two ROW_FORMATs require
|
|
srv_file_per_table and srv_file_format */
|
|
if (!srv_file_per_table) {
|
|
push_warning_printf(
|
|
thd,
|
|
MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: ROW_FORMAT=%s"
|
|
" requires innodb_file_per_table.",
|
|
row_format_name);
|
|
ret = FALSE;
|
|
|
|
}
|
|
|
|
if (srv_file_format < DICT_TF_FORMAT_ZIP) {
|
|
push_warning_printf(
|
|
thd,
|
|
MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: ROW_FORMAT=%s"
|
|
" requires innodb_file_format >"
|
|
" Antelope.",
|
|
row_format_name);
|
|
ret = FALSE;
|
|
}
|
|
|
|
/* Cannot specify KEY_BLOCK_SIZE with
|
|
ROW_FORMAT = DYNAMIC.
|
|
However, we do allow COMPRESSED to be
|
|
specified with KEY_BLOCK_SIZE. */
|
|
if (kbs_specified
|
|
&& form->s->row_type == ROW_TYPE_DYNAMIC) {
|
|
push_warning_printf(
|
|
thd,
|
|
MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: cannot specify"
|
|
" ROW_FORMAT = DYNAMIC with"
|
|
" KEY_BLOCK_SIZE.");
|
|
ret = FALSE;
|
|
}
|
|
|
|
break;
|
|
|
|
case ROW_TYPE_REDUNDANT:
|
|
case ROW_TYPE_COMPACT:
|
|
case ROW_TYPE_DEFAULT:
|
|
/* Default is COMPACT. */
|
|
row_format_name
|
|
= form->s->row_type == ROW_TYPE_REDUNDANT
|
|
? "REDUNDANT"
|
|
: "COMPACT";
|
|
|
|
/* Cannot specify KEY_BLOCK_SIZE with these
|
|
format specifiers. */
|
|
if (kbs_specified) {
|
|
push_warning_printf(
|
|
thd,
|
|
MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: cannot specify"
|
|
" ROW_FORMAT = %s with"
|
|
" KEY_BLOCK_SIZE.",
|
|
row_format_name);
|
|
ret = FALSE;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
push_warning(thd,
|
|
MYSQL_ERROR::WARN_LEVEL_ERROR,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: invalid ROW_FORMAT specifier.");
|
|
ret = FALSE;
|
|
|
|
}
|
|
}
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Update create_info. Used in SHOW CREATE TABLE et al. */
|
|
UNIV_INTERN
|
|
void
|
|
ha_innobase::update_create_info(
|
|
/*============================*/
|
|
HA_CREATE_INFO* create_info) /* in/out: create info */
|
|
{
|
|
if (!(create_info->used_fields & HA_CREATE_USED_AUTO)) {
|
|
ha_innobase::info(HA_STATUS_AUTO);
|
|
create_info->auto_increment_value = stats.auto_increment_value;
|
|
}
|
|
}
|
|
|
|
/*********************************************************************
|
|
Creates a new table to an InnoDB database. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::create(
|
|
/*================*/
|
|
/* out: error number */
|
|
const char* name, /* in: table name */
|
|
TABLE* form, /* in: information on table
|
|
columns and indexes */
|
|
HA_CREATE_INFO* create_info) /* in: more information of the
|
|
created table, contains also the
|
|
create statement string */
|
|
{
|
|
int error;
|
|
dict_table_t* innobase_table;
|
|
trx_t* parent_trx;
|
|
trx_t* trx;
|
|
int primary_key_no;
|
|
uint i;
|
|
char name2[FN_REFLEN];
|
|
char norm_name[FN_REFLEN];
|
|
THD* thd = ha_thd();
|
|
ib_int64_t auto_inc_value;
|
|
ulint flags;
|
|
/* Cache the value of innodb_file_format, in case it is
|
|
modified by another thread while the table is being created. */
|
|
const ulint file_format = srv_file_format;
|
|
|
|
DBUG_ENTER("ha_innobase::create");
|
|
|
|
DBUG_ASSERT(thd != NULL);
|
|
DBUG_ASSERT(create_info != NULL);
|
|
|
|
#ifdef __WIN__
|
|
/* Names passed in from server are in two formats:
|
|
1. <database_name>/<table_name>: for normal table creation
|
|
2. full path: for temp table creation, or sym link
|
|
|
|
When srv_file_per_table is on, check for full path pattern, i.e.
|
|
X:\dir\..., X is a driver letter, or
|
|
\\dir1\dir2\..., UNC path
|
|
returns error if it is in full path format, but not creating a temp.
|
|
table. Currently InnoDB does not support symbolic link on Windows. */
|
|
|
|
if (srv_file_per_table
|
|
&& (!create_info->options & HA_LEX_CREATE_TMP_TABLE)) {
|
|
|
|
if ((name[1] == ':')
|
|
|| (name[0] == '\\' && name[1] == '\\')) {
|
|
sql_print_error("Cannot create table %s\n", name);
|
|
DBUG_RETURN(HA_ERR_GENERIC);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (form->s->fields > 1000) {
|
|
/* The limit probably should be REC_MAX_N_FIELDS - 3 = 1020,
|
|
but we play safe here */
|
|
|
|
DBUG_RETURN(HA_ERR_TO_BIG_ROW);
|
|
}
|
|
|
|
/* Get the transaction associated with the current thd, or create one
|
|
if not yet created */
|
|
|
|
parent_trx = check_trx_exists(thd);
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT query, release
|
|
possible adaptive hash latch to avoid deadlocks of threads */
|
|
|
|
trx_search_latch_release_if_reserved(parent_trx);
|
|
|
|
trx = innobase_trx_allocate(thd);
|
|
|
|
if (lower_case_table_names) {
|
|
srv_lower_case_table_names = TRUE;
|
|
} else {
|
|
srv_lower_case_table_names = FALSE;
|
|
}
|
|
|
|
strcpy(name2, name);
|
|
|
|
normalize_table_name(norm_name, name2);
|
|
|
|
/* Latch the InnoDB data dictionary exclusively so that no deadlocks
|
|
or lock waits can happen in it during a table create operation.
|
|
Drop table etc. do this latching in row0mysql.c. */
|
|
|
|
row_mysql_lock_data_dictionary(trx);
|
|
|
|
/* Create the table definition in InnoDB */
|
|
|
|
flags = 0;
|
|
|
|
/* Validate create options if innodb_strict_mode is set. */
|
|
if (!create_options_are_valid(thd, form, create_info)) {
|
|
error = ER_ILLEGAL_HA_CREATE_OPTION;
|
|
goto cleanup;
|
|
}
|
|
|
|
if (create_info->key_block_size
|
|
|| (create_info->used_fields & HA_CREATE_USED_KEY_BLOCK_SIZE)) {
|
|
/* Determine the page_zip.ssize corresponding to the
|
|
requested page size (key_block_size) in kilobytes. */
|
|
|
|
ulint ssize, ksize;
|
|
ulint key_block_size = create_info->key_block_size;
|
|
|
|
for (ssize = ksize = 1; ssize <= DICT_TF_ZSSIZE_MAX;
|
|
ssize++, ksize <<= 1) {
|
|
if (key_block_size == ksize) {
|
|
flags = ssize << DICT_TF_ZSSIZE_SHIFT
|
|
| DICT_TF_COMPACT
|
|
| DICT_TF_FORMAT_ZIP
|
|
<< DICT_TF_FORMAT_SHIFT;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!srv_file_per_table) {
|
|
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: KEY_BLOCK_SIZE"
|
|
" requires innodb_file_per_table.");
|
|
flags = 0;
|
|
}
|
|
|
|
if (file_format < DICT_TF_FORMAT_ZIP) {
|
|
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: KEY_BLOCK_SIZE"
|
|
" requires innodb_file_format >"
|
|
" Antelope.");
|
|
flags = 0;
|
|
}
|
|
|
|
if (!flags) {
|
|
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: ignoring"
|
|
" KEY_BLOCK_SIZE=%lu.",
|
|
create_info->key_block_size);
|
|
}
|
|
}
|
|
|
|
if (create_info->used_fields & HA_CREATE_USED_ROW_FORMAT) {
|
|
if (flags) {
|
|
/* KEY_BLOCK_SIZE was specified. */
|
|
if (form->s->row_type != ROW_TYPE_COMPRESSED) {
|
|
/* ROW_FORMAT other than COMPRESSED
|
|
ignores KEY_BLOCK_SIZE. It does not
|
|
make sense to reject conflicting
|
|
KEY_BLOCK_SIZE and ROW_FORMAT, because
|
|
such combinations can be obtained
|
|
with ALTER TABLE anyway. */
|
|
push_warning_printf(
|
|
thd,
|
|
MYSQL_ERROR::WARN_LEVEL_WARN,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: ignoring KEY_BLOCK_SIZE=%lu"
|
|
" unless ROW_FORMAT=COMPRESSED.",
|
|
create_info->key_block_size);
|
|
flags = 0;
|
|
}
|
|
} else {
|
|
/* No KEY_BLOCK_SIZE */
|
|
if (form->s->row_type == ROW_TYPE_COMPRESSED) {
|
|
/* ROW_FORMAT=COMPRESSED without
|
|
KEY_BLOCK_SIZE implies half the
|
|
maximum KEY_BLOCK_SIZE. */
|
|
flags = (DICT_TF_ZSSIZE_MAX - 1)
|
|
<< DICT_TF_ZSSIZE_SHIFT
|
|
| DICT_TF_COMPACT
|
|
| DICT_TF_FORMAT_ZIP
|
|
<< DICT_TF_FORMAT_SHIFT;
|
|
#if DICT_TF_ZSSIZE_MAX < 1
|
|
# error "DICT_TF_ZSSIZE_MAX < 1"
|
|
#endif
|
|
}
|
|
}
|
|
|
|
switch (form->s->row_type) {
|
|
const char* row_format_name;
|
|
case ROW_TYPE_REDUNDANT:
|
|
break;
|
|
case ROW_TYPE_COMPRESSED:
|
|
case ROW_TYPE_DYNAMIC:
|
|
row_format_name
|
|
= form->s->row_type == ROW_TYPE_COMPRESSED
|
|
? "COMPRESSED"
|
|
: "DYNAMIC";
|
|
|
|
if (!srv_file_per_table) {
|
|
push_warning_printf(
|
|
thd,
|
|
MYSQL_ERROR::WARN_LEVEL_WARN,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: ROW_FORMAT=%s"
|
|
" requires innodb_file_per_table.",
|
|
row_format_name);
|
|
} else if (file_format < DICT_TF_FORMAT_ZIP) {
|
|
push_warning_printf(
|
|
thd,
|
|
MYSQL_ERROR::WARN_LEVEL_WARN,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: ROW_FORMAT=%s"
|
|
" requires innodb_file_format >"
|
|
" Antelope.",
|
|
row_format_name);
|
|
} else {
|
|
flags |= DICT_TF_COMPACT
|
|
| (DICT_TF_FORMAT_ZIP
|
|
<< DICT_TF_FORMAT_SHIFT);
|
|
break;
|
|
}
|
|
|
|
/* fall through */
|
|
case ROW_TYPE_NOT_USED:
|
|
case ROW_TYPE_FIXED:
|
|
default:
|
|
push_warning(thd,
|
|
MYSQL_ERROR::WARN_LEVEL_WARN,
|
|
ER_ILLEGAL_HA_CREATE_OPTION,
|
|
"InnoDB: assuming ROW_FORMAT=COMPACT.");
|
|
case ROW_TYPE_DEFAULT:
|
|
case ROW_TYPE_COMPACT:
|
|
flags = DICT_TF_COMPACT;
|
|
break;
|
|
}
|
|
} else if (!flags) {
|
|
/* No KEY_BLOCK_SIZE or ROW_FORMAT specified:
|
|
use ROW_FORMAT=COMPACT by default. */
|
|
flags = DICT_TF_COMPACT;
|
|
}
|
|
|
|
error = create_table_def(trx, form, norm_name,
|
|
create_info->options & HA_LEX_CREATE_TMP_TABLE ? name2 : NULL,
|
|
flags);
|
|
|
|
if (error) {
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Look for a primary key */
|
|
|
|
primary_key_no= (form->s->primary_key != MAX_KEY ?
|
|
(int) form->s->primary_key :
|
|
-1);
|
|
|
|
/* Our function row_get_mysql_key_number_for_index assumes
|
|
the primary key is always number 0, if it exists */
|
|
|
|
DBUG_ASSERT(primary_key_no == -1 || primary_key_no == 0);
|
|
|
|
/* Create the keys */
|
|
|
|
if (form->s->keys == 0 || primary_key_no == -1) {
|
|
/* Create an index which is used as the clustered index;
|
|
order the rows by their row id which is internally generated
|
|
by InnoDB */
|
|
|
|
error = create_clustered_index_when_no_primary(
|
|
trx, flags, norm_name);
|
|
if (error) {
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
if (primary_key_no != -1) {
|
|
/* In InnoDB the clustered index must always be created
|
|
first */
|
|
if ((error = create_index(trx, form, flags, norm_name,
|
|
(uint) primary_key_no))) {
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < form->s->keys; i++) {
|
|
|
|
if (i != (uint) primary_key_no) {
|
|
|
|
if ((error = create_index(trx, form, flags, norm_name,
|
|
i))) {
|
|
goto cleanup;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (*trx->mysql_query_str) {
|
|
error = row_table_add_foreign_constraints(trx,
|
|
*trx->mysql_query_str, norm_name,
|
|
create_info->options & HA_LEX_CREATE_TMP_TABLE);
|
|
|
|
error = convert_error_code_to_mysql(error, flags, NULL);
|
|
|
|
if (error) {
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
innobase_commit_low(trx);
|
|
|
|
row_mysql_unlock_data_dictionary(trx);
|
|
|
|
/* Flush the log to reduce probability that the .frm files and
|
|
the InnoDB data dictionary get out-of-sync if the user runs
|
|
with innodb_flush_log_at_trx_commit = 0 */
|
|
|
|
log_buffer_flush_to_disk();
|
|
|
|
innobase_table = dict_table_get(norm_name, FALSE);
|
|
|
|
DBUG_ASSERT(innobase_table != 0);
|
|
|
|
if (innobase_table) {
|
|
/* We update the highest file format in the system table
|
|
space, if this table has higher file format setting. */
|
|
|
|
trx_sys_file_format_max_upgrade(
|
|
(const char**) &innobase_file_format_check,
|
|
dict_table_get_format(innobase_table));
|
|
}
|
|
|
|
/* Note: We can't call update_thd() as prebuilt will not be
|
|
setup at this stage and so we use thd. */
|
|
|
|
/* We need to copy the AUTOINC value from the old table if
|
|
this is an ALTER TABLE. */
|
|
|
|
if (((create_info->used_fields & HA_CREATE_USED_AUTO)
|
|
|| thd_sql_command(thd) == SQLCOM_ALTER_TABLE)
|
|
&& create_info->auto_increment_value != 0) {
|
|
|
|
/* Query was ALTER TABLE...AUTO_INCREMENT = x; or
|
|
CREATE TABLE ...AUTO_INCREMENT = x; Find out a table
|
|
definition from the dictionary and get the current value
|
|
of the auto increment field. Set a new value to the
|
|
auto increment field if the value is greater than the
|
|
maximum value in the column. */
|
|
|
|
auto_inc_value = create_info->auto_increment_value;
|
|
|
|
dict_table_autoinc_lock(innobase_table);
|
|
dict_table_autoinc_initialize(innobase_table, auto_inc_value);
|
|
dict_table_autoinc_unlock(innobase_table);
|
|
}
|
|
|
|
/* Tell the InnoDB server that there might be work for
|
|
utility threads: */
|
|
|
|
srv_active_wake_master_thread();
|
|
|
|
trx_free_for_mysql(trx);
|
|
|
|
DBUG_RETURN(0);
|
|
|
|
cleanup:
|
|
innobase_commit_low(trx);
|
|
|
|
row_mysql_unlock_data_dictionary(trx);
|
|
|
|
trx_free_for_mysql(trx);
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Discards or imports an InnoDB tablespace. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::discard_or_import_tablespace(
|
|
/*======================================*/
|
|
/* out: 0 == success, -1 == error */
|
|
my_bool discard) /* in: TRUE if discard, else import */
|
|
{
|
|
dict_table_t* dict_table;
|
|
trx_t* trx;
|
|
int err;
|
|
|
|
DBUG_ENTER("ha_innobase::discard_or_import_tablespace");
|
|
|
|
ut_a(prebuilt->trx);
|
|
ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N);
|
|
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
|
|
|
|
dict_table = prebuilt->table;
|
|
trx = prebuilt->trx;
|
|
|
|
if (discard) {
|
|
err = row_discard_tablespace_for_mysql(dict_table->name, trx);
|
|
} else {
|
|
err = row_import_tablespace_for_mysql(dict_table->name, trx);
|
|
}
|
|
|
|
err = convert_error_code_to_mysql(err, dict_table->flags, NULL);
|
|
|
|
DBUG_RETURN(err);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Deletes all rows of an InnoDB table. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::delete_all_rows(void)
|
|
/*==============================*/
|
|
/* out: error number */
|
|
{
|
|
int error;
|
|
|
|
DBUG_ENTER("ha_innobase::delete_all_rows");
|
|
|
|
/* Get the transaction associated with the current thd, or create one
|
|
if not yet created, and update prebuilt->trx */
|
|
|
|
update_thd(ha_thd());
|
|
|
|
if (thd_sql_command(user_thd) != SQLCOM_TRUNCATE) {
|
|
fallback:
|
|
/* We only handle TRUNCATE TABLE t as a special case.
|
|
DELETE FROM t will have to use ha_innobase::delete_row(),
|
|
because DELETE is transactional while TRUNCATE is not. */
|
|
DBUG_RETURN(my_errno=HA_ERR_WRONG_COMMAND);
|
|
}
|
|
|
|
/* Truncate the table in InnoDB */
|
|
|
|
error = row_truncate_table_for_mysql(prebuilt->table, prebuilt->trx);
|
|
if (error == DB_ERROR) {
|
|
/* Cannot truncate; resort to ha_innobase::delete_row() */
|
|
goto fallback;
|
|
}
|
|
|
|
error = convert_error_code_to_mysql(error, prebuilt->table->flags,
|
|
NULL);
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Drops a table from an InnoDB database. Before calling this function,
|
|
MySQL calls innobase_commit to commit the transaction of the current user.
|
|
Then the current user cannot have locks set on the table. Drop table
|
|
operation inside InnoDB will remove all locks any user has on the table
|
|
inside InnoDB. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::delete_table(
|
|
/*======================*/
|
|
/* out: error number */
|
|
const char* name) /* in: table name */
|
|
{
|
|
ulint name_len;
|
|
int error;
|
|
trx_t* parent_trx;
|
|
trx_t* trx;
|
|
THD *thd = ha_thd();
|
|
char norm_name[1000];
|
|
|
|
DBUG_ENTER("ha_innobase::delete_table");
|
|
|
|
/* Strangely, MySQL passes the table name without the '.frm'
|
|
extension, in contrast to ::create */
|
|
normalize_table_name(norm_name, name);
|
|
|
|
if (IS_MAGIC_TABLE_AND_USER_DENIED_ACCESS(norm_name, thd)) {
|
|
DBUG_RETURN(HA_ERR_GENERIC);
|
|
}
|
|
|
|
/* Get the transaction associated with the current thd, or create one
|
|
if not yet created */
|
|
|
|
parent_trx = check_trx_exists(thd);
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT query, release
|
|
possible adaptive hash latch to avoid deadlocks of threads */
|
|
|
|
trx_search_latch_release_if_reserved(parent_trx);
|
|
|
|
trx = innobase_trx_allocate(thd);
|
|
|
|
if (lower_case_table_names) {
|
|
srv_lower_case_table_names = TRUE;
|
|
} else {
|
|
srv_lower_case_table_names = FALSE;
|
|
}
|
|
|
|
name_len = strlen(name);
|
|
|
|
ut_a(name_len < 1000);
|
|
|
|
/* Drop the table in InnoDB */
|
|
|
|
error = row_drop_table_for_mysql(norm_name, trx,
|
|
thd_sql_command(thd)
|
|
== SQLCOM_DROP_DB);
|
|
|
|
/* Flush the log to reduce probability that the .frm files and
|
|
the InnoDB data dictionary get out-of-sync if the user runs
|
|
with innodb_flush_log_at_trx_commit = 0 */
|
|
|
|
log_buffer_flush_to_disk();
|
|
|
|
/* Tell the InnoDB server that there might be work for
|
|
utility threads: */
|
|
|
|
srv_active_wake_master_thread();
|
|
|
|
innobase_commit_low(trx);
|
|
|
|
trx_free_for_mysql(trx);
|
|
|
|
error = convert_error_code_to_mysql(error, 0, NULL);
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Removes all tables in the named database inside InnoDB. */
|
|
static
|
|
void
|
|
innobase_drop_database(
|
|
/*===================*/
|
|
/* out: error number */
|
|
handlerton *hton, /* in: handlerton of Innodb */
|
|
char* path) /* in: database path; inside InnoDB the name
|
|
of the last directory in the path is used as
|
|
the database name: for example, in 'mysql/data/test'
|
|
the database name is 'test' */
|
|
{
|
|
ulint len = 0;
|
|
trx_t* trx;
|
|
char* ptr;
|
|
int error;
|
|
char* namebuf;
|
|
THD* thd = current_thd;
|
|
|
|
/* Get the transaction associated with the current thd, or create one
|
|
if not yet created */
|
|
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
/* In the Windows plugin, thd = current_thd is always NULL */
|
|
if (thd) {
|
|
trx_t* parent_trx = check_trx_exists(thd);
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT
|
|
query, release possible adaptive hash latch to avoid
|
|
deadlocks of threads */
|
|
|
|
trx_search_latch_release_if_reserved(parent_trx);
|
|
}
|
|
|
|
ptr = strend(path) - 2;
|
|
|
|
while (ptr >= path && *ptr != '\\' && *ptr != '/') {
|
|
ptr--;
|
|
len++;
|
|
}
|
|
|
|
ptr++;
|
|
namebuf = (char*) my_malloc((uint) len + 2, MYF(0));
|
|
|
|
memcpy(namebuf, ptr, len);
|
|
namebuf[len] = '/';
|
|
namebuf[len + 1] = '\0';
|
|
#ifdef __WIN__
|
|
innobase_casedn_str(namebuf);
|
|
#endif
|
|
#if defined __WIN__ && !defined MYSQL_SERVER
|
|
/* In the Windows plugin, thd = current_thd is always NULL */
|
|
trx = trx_allocate_for_mysql();
|
|
trx->mysql_thd = NULL;
|
|
trx->mysql_query_str = NULL;
|
|
#else
|
|
trx = innobase_trx_allocate(thd);
|
|
#endif
|
|
error = row_drop_database_for_mysql(namebuf, trx);
|
|
my_free(namebuf, MYF(0));
|
|
|
|
/* Flush the log to reduce probability that the .frm files and
|
|
the InnoDB data dictionary get out-of-sync if the user runs
|
|
with innodb_flush_log_at_trx_commit = 0 */
|
|
|
|
log_buffer_flush_to_disk();
|
|
|
|
/* Tell the InnoDB server that there might be work for
|
|
utility threads: */
|
|
|
|
srv_active_wake_master_thread();
|
|
|
|
innobase_commit_low(trx);
|
|
trx_free_for_mysql(trx);
|
|
}
|
|
/*************************************************************************
|
|
Renames an InnoDB table. */
|
|
static
|
|
int
|
|
innobase_rename_table(
|
|
/*==================*/
|
|
/* out: 0 or error code */
|
|
trx_t* trx, /* in: transaction */
|
|
const char* from, /* in: old name of the table */
|
|
const char* to, /* in: new name of the table */
|
|
ibool lock_and_commit)
|
|
/* in: TRUE=lock data dictionary and commit */
|
|
{
|
|
int error;
|
|
char* norm_to;
|
|
char* norm_from;
|
|
|
|
if (lower_case_table_names) {
|
|
srv_lower_case_table_names = TRUE;
|
|
} else {
|
|
srv_lower_case_table_names = FALSE;
|
|
}
|
|
|
|
// Magic number 64 arbitrary
|
|
norm_to = (char*) my_malloc(strlen(to) + 64, MYF(0));
|
|
norm_from = (char*) my_malloc(strlen(from) + 64, MYF(0));
|
|
|
|
normalize_table_name(norm_to, to);
|
|
normalize_table_name(norm_from, from);
|
|
|
|
/* Serialize data dictionary operations with dictionary mutex:
|
|
no deadlocks can occur then in these operations */
|
|
|
|
if (lock_and_commit) {
|
|
row_mysql_lock_data_dictionary(trx);
|
|
}
|
|
|
|
error = row_rename_table_for_mysql(
|
|
norm_from, norm_to, trx, lock_and_commit);
|
|
|
|
if (error != DB_SUCCESS) {
|
|
FILE* ef = dict_foreign_err_file;
|
|
|
|
fputs("InnoDB: Renaming table ", ef);
|
|
ut_print_name(ef, trx, TRUE, norm_from);
|
|
fputs(" to ", ef);
|
|
ut_print_name(ef, trx, TRUE, norm_to);
|
|
fputs(" failed!\n", ef);
|
|
}
|
|
|
|
if (lock_and_commit) {
|
|
row_mysql_unlock_data_dictionary(trx);
|
|
|
|
/* Flush the log to reduce probability that the .frm
|
|
files and the InnoDB data dictionary get out-of-sync
|
|
if the user runs with innodb_flush_log_at_trx_commit = 0 */
|
|
|
|
log_buffer_flush_to_disk();
|
|
}
|
|
|
|
my_free(norm_to, MYF(0));
|
|
my_free(norm_from, MYF(0));
|
|
|
|
return error;
|
|
}
|
|
/*************************************************************************
|
|
Renames an InnoDB table. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::rename_table(
|
|
/*======================*/
|
|
/* out: 0 or error code */
|
|
const char* from, /* in: old name of the table */
|
|
const char* to) /* in: new name of the table */
|
|
{
|
|
trx_t* trx;
|
|
int error;
|
|
trx_t* parent_trx;
|
|
THD* thd = ha_thd();
|
|
|
|
DBUG_ENTER("ha_innobase::rename_table");
|
|
|
|
/* Get the transaction associated with the current thd, or create one
|
|
if not yet created */
|
|
|
|
parent_trx = check_trx_exists(thd);
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT query, release
|
|
possible adaptive hash latch to avoid deadlocks of threads */
|
|
|
|
trx_search_latch_release_if_reserved(parent_trx);
|
|
|
|
trx = innobase_trx_allocate(thd);
|
|
|
|
error = innobase_rename_table(trx, from, to, TRUE);
|
|
|
|
/* Tell the InnoDB server that there might be work for
|
|
utility threads: */
|
|
|
|
srv_active_wake_master_thread();
|
|
|
|
innobase_commit_low(trx);
|
|
trx_free_for_mysql(trx);
|
|
|
|
error = convert_error_code_to_mysql(error, 0, NULL);
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Estimates the number of index records in a range. */
|
|
UNIV_INTERN
|
|
ha_rows
|
|
ha_innobase::records_in_range(
|
|
/*==========================*/
|
|
/* out: estimated number of
|
|
rows */
|
|
uint keynr, /* in: index number */
|
|
key_range *min_key, /* in: start key value of the
|
|
range, may also be 0 */
|
|
key_range *max_key) /* in: range end key val, may
|
|
also be 0 */
|
|
{
|
|
KEY* key;
|
|
dict_index_t* index;
|
|
uchar* key_val_buff2 = (uchar*) my_malloc(
|
|
table->s->reclength
|
|
+ table->s->max_key_length + 100,
|
|
MYF(MY_FAE));
|
|
ulint buff2_len = table->s->reclength
|
|
+ table->s->max_key_length + 100;
|
|
dtuple_t* range_start;
|
|
dtuple_t* range_end;
|
|
ib_int64_t n_rows;
|
|
ulint mode1;
|
|
ulint mode2;
|
|
mem_heap_t* heap;
|
|
|
|
DBUG_ENTER("records_in_range");
|
|
|
|
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
|
|
|
|
prebuilt->trx->op_info = (char*)"estimating records in index range";
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT query, release
|
|
possible adaptive hash latch to avoid deadlocks of threads */
|
|
|
|
trx_search_latch_release_if_reserved(prebuilt->trx);
|
|
|
|
active_index = keynr;
|
|
|
|
key = table->key_info + active_index;
|
|
|
|
index = dict_table_get_index_on_name(prebuilt->table, key->name);
|
|
|
|
/* MySQL knows about this index and so we must be able to find it.*/
|
|
ut_a(index);
|
|
|
|
heap = mem_heap_create(2 * (key->key_parts * sizeof(dfield_t)
|
|
+ sizeof(dtuple_t)));
|
|
|
|
range_start = dtuple_create(heap, key->key_parts);
|
|
dict_index_copy_types(range_start, index, key->key_parts);
|
|
|
|
range_end = dtuple_create(heap, key->key_parts);
|
|
dict_index_copy_types(range_end, index, key->key_parts);
|
|
|
|
row_sel_convert_mysql_key_to_innobase(
|
|
range_start, (byte*) key_val_buff,
|
|
(ulint)upd_and_key_val_buff_len,
|
|
index,
|
|
(byte*) (min_key ? min_key->key :
|
|
(const uchar*) 0),
|
|
(ulint) (min_key ? min_key->length : 0),
|
|
prebuilt->trx);
|
|
|
|
row_sel_convert_mysql_key_to_innobase(
|
|
range_end, (byte*) key_val_buff2,
|
|
buff2_len, index,
|
|
(byte*) (max_key ? max_key->key :
|
|
(const uchar*) 0),
|
|
(ulint) (max_key ? max_key->length : 0),
|
|
prebuilt->trx);
|
|
|
|
mode1 = convert_search_mode_to_innobase(min_key ? min_key->flag :
|
|
HA_READ_KEY_EXACT);
|
|
mode2 = convert_search_mode_to_innobase(max_key ? max_key->flag :
|
|
HA_READ_KEY_EXACT);
|
|
|
|
if (mode1 != PAGE_CUR_UNSUPP && mode2 != PAGE_CUR_UNSUPP) {
|
|
|
|
n_rows = btr_estimate_n_rows_in_range(index, range_start,
|
|
mode1, range_end,
|
|
mode2);
|
|
} else {
|
|
|
|
n_rows = 0;
|
|
}
|
|
|
|
mem_heap_free(heap);
|
|
|
|
my_free(key_val_buff2, MYF(0));
|
|
|
|
prebuilt->trx->op_info = (char*)"";
|
|
|
|
/* The MySQL optimizer seems to believe an estimate of 0 rows is
|
|
always accurate and may return the result 'Empty set' based on that.
|
|
The accuracy is not guaranteed, and even if it were, for a locking
|
|
read we should anyway perform the search to set the next-key lock.
|
|
Add 1 to the value to make sure MySQL does not make the assumption! */
|
|
|
|
if (n_rows == 0) {
|
|
n_rows = 1;
|
|
}
|
|
|
|
DBUG_RETURN((ha_rows) n_rows);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Gives an UPPER BOUND to the number of rows in a table. This is used in
|
|
filesort.cc. */
|
|
UNIV_INTERN
|
|
ha_rows
|
|
ha_innobase::estimate_rows_upper_bound(void)
|
|
/*======================================*/
|
|
/* out: upper bound of rows */
|
|
{
|
|
dict_index_t* index;
|
|
ulonglong estimate;
|
|
ulonglong local_data_file_length;
|
|
|
|
DBUG_ENTER("estimate_rows_upper_bound");
|
|
|
|
/* We do not know if MySQL can call this function before calling
|
|
external_lock(). To be safe, update the thd of the current table
|
|
handle. */
|
|
|
|
update_thd(ha_thd());
|
|
|
|
prebuilt->trx->op_info = (char*)
|
|
"calculating upper bound for table rows";
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT query, release
|
|
possible adaptive hash latch to avoid deadlocks of threads */
|
|
|
|
trx_search_latch_release_if_reserved(prebuilt->trx);
|
|
|
|
index = dict_table_get_first_index(prebuilt->table);
|
|
|
|
ut_a(index->stat_n_leaf_pages > 0);
|
|
|
|
local_data_file_length =
|
|
((ulonglong) index->stat_n_leaf_pages) * UNIV_PAGE_SIZE;
|
|
|
|
|
|
/* Calculate a minimum length for a clustered index record and from
|
|
that an upper bound for the number of rows. Since we only calculate
|
|
new statistics in row0mysql.c when a table has grown by a threshold
|
|
factor, we must add a safety factor 2 in front of the formula below. */
|
|
|
|
estimate = 2 * local_data_file_length /
|
|
dict_index_calc_min_rec_len(index);
|
|
|
|
prebuilt->trx->op_info = (char*)"";
|
|
|
|
DBUG_RETURN((ha_rows) estimate);
|
|
}
|
|
|
|
/*************************************************************************
|
|
How many seeks it will take to read through the table. This is to be
|
|
comparable to the number returned by records_in_range so that we can
|
|
decide if we should scan the table or use keys. */
|
|
UNIV_INTERN
|
|
double
|
|
ha_innobase::scan_time()
|
|
/*====================*/
|
|
/* out: estimated time measured in disk seeks */
|
|
{
|
|
/* Since MySQL seems to favor table scans too much over index
|
|
searches, we pretend that a sequential read takes the same time
|
|
as a random disk read, that is, we do not divide the following
|
|
by 10, which would be physically realistic. */
|
|
|
|
return((double) (prebuilt->table->stat_clustered_index_size));
|
|
}
|
|
|
|
/**********************************************************************
|
|
Calculate the time it takes to read a set of ranges through an index
|
|
This enables us to optimise reads for clustered indexes. */
|
|
UNIV_INTERN
|
|
double
|
|
ha_innobase::read_time(
|
|
/*===================*/
|
|
/* out: estimated time measured in disk seeks */
|
|
uint index, /* in: key number */
|
|
uint ranges, /* in: how many ranges */
|
|
ha_rows rows) /* in: estimated number of rows in the ranges */
|
|
{
|
|
ha_rows total_rows;
|
|
double time_for_scan;
|
|
|
|
if (index != table->s->primary_key) {
|
|
/* Not clustered */
|
|
return(handler::read_time(index, ranges, rows));
|
|
}
|
|
|
|
if (rows <= 2) {
|
|
|
|
return((double) rows);
|
|
}
|
|
|
|
/* Assume that the read time is proportional to the scan time for all
|
|
rows + at most one seek per range. */
|
|
|
|
time_for_scan = scan_time();
|
|
|
|
if ((total_rows = estimate_rows_upper_bound()) < rows) {
|
|
|
|
return(time_for_scan);
|
|
}
|
|
|
|
return(ranges + (double) rows / (double) total_rows * time_for_scan);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Returns statistics information of the table to the MySQL interpreter,
|
|
in various fields of the handle object. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::info(
|
|
/*==============*/
|
|
uint flag) /* in: what information MySQL requests */
|
|
{
|
|
dict_table_t* ib_table;
|
|
dict_index_t* index;
|
|
ha_rows rec_per_key;
|
|
ib_int64_t n_rows;
|
|
ulong j;
|
|
ulong i;
|
|
char path[FN_REFLEN];
|
|
os_file_stat_t stat_info;
|
|
|
|
DBUG_ENTER("info");
|
|
|
|
/* If we are forcing recovery at a high level, we will suppress
|
|
statistics calculation on tables, because that may crash the
|
|
server if an index is badly corrupted. */
|
|
|
|
if (srv_force_recovery >= SRV_FORCE_NO_IBUF_MERGE) {
|
|
|
|
/* We return success (0) instead of HA_ERR_CRASHED,
|
|
because we want MySQL to process this query and not
|
|
stop, like it would do if it received the error code
|
|
HA_ERR_CRASHED. */
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/* We do not know if MySQL can call this function before calling
|
|
external_lock(). To be safe, update the thd of the current table
|
|
handle. */
|
|
|
|
update_thd(ha_thd());
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT query, release
|
|
possible adaptive hash latch to avoid deadlocks of threads */
|
|
|
|
prebuilt->trx->op_info = (char*)"returning various info to MySQL";
|
|
|
|
trx_search_latch_release_if_reserved(prebuilt->trx);
|
|
|
|
ib_table = prebuilt->table;
|
|
|
|
if (flag & HA_STATUS_TIME) {
|
|
if (innobase_stats_on_metadata) {
|
|
/* In sql_show we call with this flag: update
|
|
then statistics so that they are up-to-date */
|
|
|
|
prebuilt->trx->op_info = "updating table statistics";
|
|
|
|
dict_update_statistics(ib_table);
|
|
|
|
prebuilt->trx->op_info = "returning various info to MySQL";
|
|
}
|
|
|
|
my_snprintf(path, sizeof(path), "%s/%s%s",
|
|
mysql_data_home, ib_table->name, reg_ext);
|
|
|
|
unpack_filename(path,path);
|
|
|
|
/* Note that we do not know the access time of the table,
|
|
nor the CHECK TABLE time, nor the UPDATE or INSERT time. */
|
|
|
|
if (os_file_get_status(path,&stat_info)) {
|
|
stats.create_time = stat_info.ctime;
|
|
}
|
|
}
|
|
|
|
if (flag & HA_STATUS_VARIABLE) {
|
|
n_rows = ib_table->stat_n_rows;
|
|
|
|
/* Because we do not protect stat_n_rows by any mutex in a
|
|
delete, it is theoretically possible that the value can be
|
|
smaller than zero! TODO: fix this race.
|
|
|
|
The MySQL optimizer seems to assume in a left join that n_rows
|
|
is an accurate estimate if it is zero. Of course, it is not,
|
|
since we do not have any locks on the rows yet at this phase.
|
|
Since SHOW TABLE STATUS seems to call this function with the
|
|
HA_STATUS_TIME flag set, while the left join optimizer does not
|
|
set that flag, we add one to a zero value if the flag is not
|
|
set. That way SHOW TABLE STATUS will show the best estimate,
|
|
while the optimizer never sees the table empty. */
|
|
|
|
if (n_rows < 0) {
|
|
n_rows = 0;
|
|
}
|
|
|
|
if (n_rows == 0 && !(flag & HA_STATUS_TIME)) {
|
|
n_rows++;
|
|
}
|
|
|
|
/* Fix bug#40386: Not flushing query cache after truncate.
|
|
n_rows can not be 0 unless the table is empty, set to 1
|
|
instead. The original problem of bug#29507 is actually
|
|
fixed in the server code. */
|
|
if (thd_sql_command(user_thd) == SQLCOM_TRUNCATE) {
|
|
|
|
n_rows = 1;
|
|
|
|
/* We need to reset the prebuilt value too, otherwise
|
|
checks for values greater than the last value written
|
|
to the table will fail and the autoinc counter will
|
|
not be updated. This will force write_row() into
|
|
attempting an update of the table's AUTOINC counter. */
|
|
|
|
prebuilt->autoinc_last_value = 0;
|
|
}
|
|
|
|
stats.records = (ha_rows)n_rows;
|
|
stats.deleted = 0;
|
|
stats.data_file_length = ((ulonglong)
|
|
ib_table->stat_clustered_index_size)
|
|
* UNIV_PAGE_SIZE;
|
|
stats.index_file_length = ((ulonglong)
|
|
ib_table->stat_sum_of_other_index_sizes)
|
|
* UNIV_PAGE_SIZE;
|
|
|
|
/* Since fsp_get_available_space_in_free_extents() is
|
|
acquiring latches inside InnoDB, we do not call it if we
|
|
are asked by MySQL to avoid locking. Another reason to
|
|
avoid the call is that it uses quite a lot of CPU.
|
|
See Bug#38185.
|
|
We do not update delete_length if no locking is requested
|
|
so the "old" value can remain. delete_length is initialized
|
|
to 0 in the ha_statistics' constructor. */
|
|
if (!(flag & HA_STATUS_NO_LOCK)) {
|
|
|
|
/* lock the data dictionary to avoid races with
|
|
ibd_file_missing and tablespace_discarded */
|
|
row_mysql_lock_data_dictionary(prebuilt->trx);
|
|
|
|
/* ib_table->space must be an existent tablespace */
|
|
if (!ib_table->ibd_file_missing
|
|
&& !ib_table->tablespace_discarded) {
|
|
|
|
stats.delete_length =
|
|
fsp_get_available_space_in_free_extents(
|
|
ib_table->space) * 1024;
|
|
} else {
|
|
|
|
THD* thd;
|
|
|
|
thd = ha_thd();
|
|
|
|
push_warning_printf(
|
|
thd,
|
|
MYSQL_ERROR::WARN_LEVEL_WARN,
|
|
ER_CANT_GET_STAT,
|
|
"InnoDB: Trying to get the free "
|
|
"space for table %s but its "
|
|
"tablespace has been discarded or "
|
|
"the .ibd file is missing. Setting "
|
|
"the free space to zero.",
|
|
ib_table->name);
|
|
|
|
stats.delete_length = 0;
|
|
}
|
|
|
|
row_mysql_unlock_data_dictionary(prebuilt->trx);
|
|
}
|
|
|
|
stats.check_time = 0;
|
|
|
|
if (stats.records == 0) {
|
|
stats.mean_rec_length = 0;
|
|
} else {
|
|
stats.mean_rec_length = (ulong) (stats.data_file_length / stats.records);
|
|
}
|
|
}
|
|
|
|
if (flag & HA_STATUS_CONST) {
|
|
index = dict_table_get_first_index(ib_table);
|
|
|
|
if (prebuilt->clust_index_was_generated) {
|
|
index = dict_table_get_next_index(index);
|
|
}
|
|
|
|
for (i = 0; i < table->s->keys; i++) {
|
|
if (index == NULL) {
|
|
sql_print_error("Table %s contains fewer "
|
|
"indexes inside InnoDB than "
|
|
"are defined in the MySQL "
|
|
".frm file. Have you mixed up "
|
|
".frm files from different "
|
|
"installations? See "
|
|
"http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n",
|
|
|
|
ib_table->name);
|
|
break;
|
|
}
|
|
|
|
for (j = 0; j < table->key_info[i].key_parts; j++) {
|
|
|
|
if (j + 1 > index->n_uniq) {
|
|
sql_print_error(
|
|
"Index %s of %s has %lu columns unique inside InnoDB, but MySQL is asking "
|
|
"statistics for %lu columns. Have you mixed up .frm files from different "
|
|
"installations? "
|
|
"See http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n",
|
|
index->name,
|
|
ib_table->name,
|
|
(unsigned long)
|
|
index->n_uniq, j + 1);
|
|
break;
|
|
}
|
|
|
|
if (index->stat_n_diff_key_vals[j + 1] == 0) {
|
|
|
|
rec_per_key = stats.records;
|
|
} else {
|
|
rec_per_key = (ha_rows)(stats.records /
|
|
index->stat_n_diff_key_vals[j + 1]);
|
|
}
|
|
|
|
/* Since MySQL seems to favor table scans
|
|
too much over index searches, we pretend
|
|
index selectivity is 2 times better than
|
|
our estimate: */
|
|
|
|
rec_per_key = rec_per_key / 2;
|
|
|
|
if (rec_per_key == 0) {
|
|
rec_per_key = 1;
|
|
}
|
|
|
|
table->key_info[i].rec_per_key[j]=
|
|
rec_per_key >= ~(ulong) 0 ? ~(ulong) 0 :
|
|
(ulong) rec_per_key;
|
|
}
|
|
|
|
index = dict_table_get_next_index(index);
|
|
}
|
|
}
|
|
|
|
if (flag & HA_STATUS_ERRKEY) {
|
|
const dict_index_t* err_index;
|
|
|
|
ut_a(prebuilt->trx);
|
|
ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N);
|
|
|
|
err_index = trx_get_error_info(prebuilt->trx);
|
|
|
|
if (err_index) {
|
|
errkey = (unsigned int)
|
|
row_get_mysql_key_number_for_index(err_index);
|
|
} else {
|
|
errkey = (unsigned int) prebuilt->trx->error_key_num;
|
|
}
|
|
}
|
|
|
|
if ((flag & HA_STATUS_AUTO) && table->found_next_number_field) {
|
|
stats.auto_increment_value = innobase_peek_autoinc();
|
|
}
|
|
|
|
prebuilt->trx->op_info = (char*)"";
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Updates index cardinalities of the table, based on 8 random dives into
|
|
each index tree. This does NOT calculate exact statistics on the table. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::analyze(
|
|
/*=================*/
|
|
/* out: returns always 0 (success) */
|
|
THD* thd, /* in: connection thread handle */
|
|
HA_CHECK_OPT* check_opt) /* in: currently ignored */
|
|
{
|
|
/* Simply call ::info() with all the flags */
|
|
info(HA_STATUS_TIME | HA_STATUS_CONST | HA_STATUS_VARIABLE);
|
|
|
|
return(0);
|
|
}
|
|
|
|
/**************************************************************************
|
|
This is mapped to "ALTER TABLE tablename ENGINE=InnoDB", which rebuilds
|
|
the table in MySQL. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::optimize(
|
|
/*==================*/
|
|
THD* thd, /* in: connection thread handle */
|
|
HA_CHECK_OPT* check_opt) /* in: currently ignored */
|
|
{
|
|
return(HA_ADMIN_TRY_ALTER);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Tries to check that an InnoDB table is not corrupted. If corruption is
|
|
noticed, prints to stderr information about it. In case of corruption
|
|
may also assert a failure and crash the server. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::check(
|
|
/*===============*/
|
|
/* out: HA_ADMIN_CORRUPT or
|
|
HA_ADMIN_OK */
|
|
THD* thd, /* in: user thread handle */
|
|
HA_CHECK_OPT* check_opt) /* in: check options, currently
|
|
ignored */
|
|
{
|
|
ulint ret;
|
|
|
|
DBUG_ASSERT(thd == ha_thd());
|
|
ut_a(prebuilt->trx);
|
|
ut_a(prebuilt->trx->magic_n == TRX_MAGIC_N);
|
|
ut_a(prebuilt->trx == thd_to_trx(thd));
|
|
|
|
if (prebuilt->mysql_template == NULL) {
|
|
/* Build the template; we will use a dummy template
|
|
in index scans done in checking */
|
|
|
|
build_template(prebuilt, NULL, table, ROW_MYSQL_WHOLE_ROW);
|
|
}
|
|
|
|
ret = row_check_table_for_mysql(prebuilt);
|
|
|
|
if (ret == DB_SUCCESS) {
|
|
return(HA_ADMIN_OK);
|
|
}
|
|
|
|
return(HA_ADMIN_CORRUPT);
|
|
}
|
|
|
|
/*****************************************************************
|
|
Adds information about free space in the InnoDB tablespace to a table comment
|
|
which is printed out when a user calls SHOW TABLE STATUS. Adds also info on
|
|
foreign keys. */
|
|
UNIV_INTERN
|
|
char*
|
|
ha_innobase::update_table_comment(
|
|
/*==============================*/
|
|
/* out: table comment + InnoDB free space +
|
|
info on foreign keys */
|
|
const char* comment)/* in: table comment defined by user */
|
|
{
|
|
uint length = (uint) strlen(comment);
|
|
char* str;
|
|
long flen;
|
|
|
|
/* We do not know if MySQL can call this function before calling
|
|
external_lock(). To be safe, update the thd of the current table
|
|
handle. */
|
|
|
|
if (length > 64000 - 3) {
|
|
return((char*)comment); /* string too long */
|
|
}
|
|
|
|
update_thd(ha_thd());
|
|
|
|
prebuilt->trx->op_info = (char*)"returning table comment";
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT query, release
|
|
possible adaptive hash latch to avoid deadlocks of threads */
|
|
|
|
trx_search_latch_release_if_reserved(prebuilt->trx);
|
|
str = NULL;
|
|
|
|
/* output the data to a temporary file */
|
|
|
|
mutex_enter(&srv_dict_tmpfile_mutex);
|
|
rewind(srv_dict_tmpfile);
|
|
|
|
fprintf(srv_dict_tmpfile, "InnoDB free: %llu kB",
|
|
fsp_get_available_space_in_free_extents(
|
|
prebuilt->table->space));
|
|
|
|
dict_print_info_on_foreign_keys(FALSE, srv_dict_tmpfile,
|
|
prebuilt->trx, prebuilt->table);
|
|
flen = ftell(srv_dict_tmpfile);
|
|
if (flen < 0) {
|
|
flen = 0;
|
|
} else if (length + flen + 3 > 64000) {
|
|
flen = 64000 - 3 - length;
|
|
}
|
|
|
|
/* allocate buffer for the full string, and
|
|
read the contents of the temporary file */
|
|
|
|
str = (char*) my_malloc(length + flen + 3, MYF(0));
|
|
|
|
if (str) {
|
|
char* pos = str + length;
|
|
if (length) {
|
|
memcpy(str, comment, length);
|
|
*pos++ = ';';
|
|
*pos++ = ' ';
|
|
}
|
|
rewind(srv_dict_tmpfile);
|
|
flen = (uint) fread(pos, 1, flen, srv_dict_tmpfile);
|
|
pos[flen] = 0;
|
|
}
|
|
|
|
mutex_exit(&srv_dict_tmpfile_mutex);
|
|
|
|
prebuilt->trx->op_info = (char*)"";
|
|
|
|
return(str ? str : (char*) comment);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Gets the foreign key create info for a table stored in InnoDB. */
|
|
UNIV_INTERN
|
|
char*
|
|
ha_innobase::get_foreign_key_create_info(void)
|
|
/*==========================================*/
|
|
/* out, own: character string in the form which
|
|
can be inserted to the CREATE TABLE statement,
|
|
MUST be freed with ::free_foreign_key_create_info */
|
|
{
|
|
char* str = 0;
|
|
long flen;
|
|
|
|
ut_a(prebuilt != NULL);
|
|
|
|
/* We do not know if MySQL can call this function before calling
|
|
external_lock(). To be safe, update the thd of the current table
|
|
handle. */
|
|
|
|
update_thd(ha_thd());
|
|
|
|
prebuilt->trx->op_info = (char*)"getting info on foreign keys";
|
|
|
|
/* In case MySQL calls this in the middle of a SELECT query,
|
|
release possible adaptive hash latch to avoid
|
|
deadlocks of threads */
|
|
|
|
trx_search_latch_release_if_reserved(prebuilt->trx);
|
|
|
|
mutex_enter(&srv_dict_tmpfile_mutex);
|
|
rewind(srv_dict_tmpfile);
|
|
|
|
/* output the data to a temporary file */
|
|
dict_print_info_on_foreign_keys(TRUE, srv_dict_tmpfile,
|
|
prebuilt->trx, prebuilt->table);
|
|
prebuilt->trx->op_info = (char*)"";
|
|
|
|
flen = ftell(srv_dict_tmpfile);
|
|
if (flen < 0) {
|
|
flen = 0;
|
|
} else if (flen > 64000 - 1) {
|
|
flen = 64000 - 1;
|
|
}
|
|
|
|
/* allocate buffer for the string, and
|
|
read the contents of the temporary file */
|
|
|
|
str = (char*) my_malloc(flen + 1, MYF(0));
|
|
|
|
if (str) {
|
|
rewind(srv_dict_tmpfile);
|
|
flen = (uint) fread(str, 1, flen, srv_dict_tmpfile);
|
|
str[flen] = 0;
|
|
}
|
|
|
|
mutex_exit(&srv_dict_tmpfile_mutex);
|
|
|
|
return(str);
|
|
}
|
|
|
|
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::get_foreign_key_list(THD *thd, List<FOREIGN_KEY_INFO> *f_key_list)
|
|
{
|
|
dict_foreign_t* foreign;
|
|
|
|
DBUG_ENTER("get_foreign_key_list");
|
|
ut_a(prebuilt != NULL);
|
|
update_thd(ha_thd());
|
|
prebuilt->trx->op_info = (char*)"getting list of foreign keys";
|
|
trx_search_latch_release_if_reserved(prebuilt->trx);
|
|
mutex_enter(&(dict_sys->mutex));
|
|
foreign = UT_LIST_GET_FIRST(prebuilt->table->foreign_list);
|
|
|
|
while (foreign != NULL) {
|
|
uint i;
|
|
FOREIGN_KEY_INFO f_key_info;
|
|
LEX_STRING *name= 0;
|
|
uint ulen;
|
|
char uname[NAME_LEN+1]; /* Unencoded name */
|
|
char db_name[NAME_LEN+1];
|
|
const char *tmp_buff;
|
|
|
|
tmp_buff= foreign->id;
|
|
i= 0;
|
|
while (tmp_buff[i] != '/')
|
|
i++;
|
|
tmp_buff+= i + 1;
|
|
f_key_info.forein_id = thd_make_lex_string(thd, 0,
|
|
tmp_buff, (uint) strlen(tmp_buff), 1);
|
|
tmp_buff= foreign->referenced_table_name;
|
|
|
|
/* Database name */
|
|
i= 0;
|
|
while (tmp_buff[i] != '/')
|
|
{
|
|
db_name[i]= tmp_buff[i];
|
|
i++;
|
|
}
|
|
db_name[i]= 0;
|
|
ulen= filename_to_tablename(db_name, uname, sizeof(uname));
|
|
f_key_info.referenced_db = thd_make_lex_string(thd, 0,
|
|
uname, ulen, 1);
|
|
|
|
/* Table name */
|
|
tmp_buff+= i + 1;
|
|
ulen= filename_to_tablename(tmp_buff, uname, sizeof(uname));
|
|
f_key_info.referenced_table = thd_make_lex_string(thd, 0,
|
|
uname, ulen, 1);
|
|
|
|
for (i= 0;;) {
|
|
tmp_buff= foreign->foreign_col_names[i];
|
|
name = thd_make_lex_string(thd, name,
|
|
tmp_buff, (uint) strlen(tmp_buff), 1);
|
|
f_key_info.foreign_fields.push_back(name);
|
|
tmp_buff= foreign->referenced_col_names[i];
|
|
name = thd_make_lex_string(thd, name,
|
|
tmp_buff, (uint) strlen(tmp_buff), 1);
|
|
f_key_info.referenced_fields.push_back(name);
|
|
if (++i >= foreign->n_fields)
|
|
break;
|
|
}
|
|
|
|
ulong length;
|
|
if (foreign->type & DICT_FOREIGN_ON_DELETE_CASCADE)
|
|
{
|
|
length=7;
|
|
tmp_buff= "CASCADE";
|
|
}
|
|
else if (foreign->type & DICT_FOREIGN_ON_DELETE_SET_NULL)
|
|
{
|
|
length=8;
|
|
tmp_buff= "SET NULL";
|
|
}
|
|
else if (foreign->type & DICT_FOREIGN_ON_DELETE_NO_ACTION)
|
|
{
|
|
length=9;
|
|
tmp_buff= "NO ACTION";
|
|
}
|
|
else
|
|
{
|
|
length=8;
|
|
tmp_buff= "RESTRICT";
|
|
}
|
|
f_key_info.delete_method = thd_make_lex_string(
|
|
thd, f_key_info.delete_method, tmp_buff, length, 1);
|
|
|
|
|
|
if (foreign->type & DICT_FOREIGN_ON_UPDATE_CASCADE)
|
|
{
|
|
length=7;
|
|
tmp_buff= "CASCADE";
|
|
}
|
|
else if (foreign->type & DICT_FOREIGN_ON_UPDATE_SET_NULL)
|
|
{
|
|
length=8;
|
|
tmp_buff= "SET NULL";
|
|
}
|
|
else if (foreign->type & DICT_FOREIGN_ON_UPDATE_NO_ACTION)
|
|
{
|
|
length=9;
|
|
tmp_buff= "NO ACTION";
|
|
}
|
|
else
|
|
{
|
|
length=8;
|
|
tmp_buff= "RESTRICT";
|
|
}
|
|
f_key_info.update_method = thd_make_lex_string(
|
|
thd, f_key_info.update_method, tmp_buff, length, 1);
|
|
if (foreign->referenced_index &&
|
|
foreign->referenced_index->name)
|
|
{
|
|
f_key_info.referenced_key_name = thd_make_lex_string(
|
|
thd, f_key_info.referenced_key_name,
|
|
foreign->referenced_index->name,
|
|
strlen(foreign->referenced_index->name), 1);
|
|
}
|
|
else
|
|
f_key_info.referenced_key_name= 0;
|
|
|
|
FOREIGN_KEY_INFO *pf_key_info = (FOREIGN_KEY_INFO *)
|
|
thd_memdup(thd, &f_key_info, sizeof(FOREIGN_KEY_INFO));
|
|
f_key_list->push_back(pf_key_info);
|
|
foreign = UT_LIST_GET_NEXT(foreign_list, foreign);
|
|
}
|
|
mutex_exit(&(dict_sys->mutex));
|
|
prebuilt->trx->op_info = (char*)"";
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Checks if ALTER TABLE may change the storage engine of the table.
|
|
Changing storage engines is not allowed for tables for which there
|
|
are foreign key constraints (parent or child tables). */
|
|
UNIV_INTERN
|
|
bool
|
|
ha_innobase::can_switch_engines(void)
|
|
/*=================================*/
|
|
{
|
|
bool can_switch;
|
|
|
|
DBUG_ENTER("ha_innobase::can_switch_engines");
|
|
|
|
ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
|
|
|
|
prebuilt->trx->op_info =
|
|
"determining if there are foreign key constraints";
|
|
row_mysql_lock_data_dictionary(prebuilt->trx);
|
|
|
|
can_switch = !UT_LIST_GET_FIRST(prebuilt->table->referenced_list)
|
|
&& !UT_LIST_GET_FIRST(prebuilt->table->foreign_list);
|
|
|
|
row_mysql_unlock_data_dictionary(prebuilt->trx);
|
|
prebuilt->trx->op_info = "";
|
|
|
|
DBUG_RETURN(can_switch);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Checks if a table is referenced by a foreign key. The MySQL manual states that
|
|
a REPLACE is either equivalent to an INSERT, or DELETE(s) + INSERT. Only a
|
|
delete is then allowed internally to resolve a duplicate key conflict in
|
|
REPLACE, not an update. */
|
|
UNIV_INTERN
|
|
uint
|
|
ha_innobase::referenced_by_foreign_key(void)
|
|
/*========================================*/
|
|
/* out: > 0 if referenced by a FOREIGN KEY */
|
|
{
|
|
if (dict_table_is_referenced_by_foreign_key(prebuilt->table)) {
|
|
|
|
return(1);
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Frees the foreign key create info for a table stored in InnoDB, if it is
|
|
non-NULL. */
|
|
UNIV_INTERN
|
|
void
|
|
ha_innobase::free_foreign_key_create_info(
|
|
/*======================================*/
|
|
char* str) /* in, own: create info string to free */
|
|
{
|
|
if (str) {
|
|
my_free(str, MYF(0));
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
Tells something additional to the handler about how to do things. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::extra(
|
|
/*===============*/
|
|
/* out: 0 or error number */
|
|
enum ha_extra_function operation)
|
|
/* in: HA_EXTRA_FLUSH or some other flag */
|
|
{
|
|
/* Warning: since it is not sure that MySQL calls external_lock
|
|
before calling this function, the trx field in prebuilt can be
|
|
obsolete! */
|
|
|
|
switch (operation) {
|
|
case HA_EXTRA_FLUSH:
|
|
if (prebuilt->blob_heap) {
|
|
row_mysql_prebuilt_free_blob_heap(prebuilt);
|
|
}
|
|
break;
|
|
case HA_EXTRA_RESET_STATE:
|
|
reset_template(prebuilt);
|
|
break;
|
|
case HA_EXTRA_NO_KEYREAD:
|
|
prebuilt->read_just_key = 0;
|
|
break;
|
|
case HA_EXTRA_KEYREAD:
|
|
prebuilt->read_just_key = 1;
|
|
break;
|
|
case HA_EXTRA_KEYREAD_PRESERVE_FIELDS:
|
|
prebuilt->keep_other_fields_on_keyread = 1;
|
|
break;
|
|
|
|
/* IMPORTANT: prebuilt->trx can be obsolete in
|
|
this method, because it is not sure that MySQL
|
|
calls external_lock before this method with the
|
|
parameters below. We must not invoke update_thd()
|
|
either, because the calling threads may change.
|
|
CAREFUL HERE, OR MEMORY CORRUPTION MAY OCCUR! */
|
|
case HA_EXTRA_IGNORE_DUP_KEY:
|
|
thd_to_trx(ha_thd())->duplicates |= TRX_DUP_IGNORE;
|
|
break;
|
|
case HA_EXTRA_WRITE_CAN_REPLACE:
|
|
thd_to_trx(ha_thd())->duplicates |= TRX_DUP_REPLACE;
|
|
break;
|
|
case HA_EXTRA_WRITE_CANNOT_REPLACE:
|
|
thd_to_trx(ha_thd())->duplicates &= ~TRX_DUP_REPLACE;
|
|
break;
|
|
case HA_EXTRA_NO_IGNORE_DUP_KEY:
|
|
thd_to_trx(ha_thd())->duplicates &=
|
|
~(TRX_DUP_IGNORE | TRX_DUP_REPLACE);
|
|
break;
|
|
default:/* Do nothing */
|
|
;
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::reset()
|
|
{
|
|
if (prebuilt->blob_heap) {
|
|
row_mysql_prebuilt_free_blob_heap(prebuilt);
|
|
}
|
|
|
|
reset_template(prebuilt);
|
|
|
|
/* TODO: This should really be reset in reset_template() but for now
|
|
it's safer to do it explicitly here. */
|
|
|
|
/* This is a statement level counter. */
|
|
prebuilt->autoinc_last_value = 0;
|
|
|
|
return(0);
|
|
}
|
|
|
|
/**********************************************************************
|
|
MySQL calls this function at the start of each SQL statement inside LOCK
|
|
TABLES. Inside LOCK TABLES the ::external_lock method does not work to
|
|
mark SQL statement borders. Note also a special case: if a temporary table
|
|
is created inside LOCK TABLES, MySQL has not called external_lock() at all
|
|
on that table.
|
|
MySQL-5.0 also calls this before each statement in an execution of a stored
|
|
procedure. To make the execution more deterministic for binlogging, MySQL-5.0
|
|
locks all tables involved in a stored procedure with full explicit table
|
|
locks (thd_in_lock_tables(thd) holds in store_lock()) before executing the
|
|
procedure. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::start_stmt(
|
|
/*====================*/
|
|
/* out: 0 or error code */
|
|
THD* thd, /* in: handle to the user thread */
|
|
thr_lock_type lock_type)
|
|
{
|
|
trx_t* trx;
|
|
|
|
update_thd(thd);
|
|
|
|
trx = prebuilt->trx;
|
|
|
|
/* Here we release the search latch and the InnoDB thread FIFO ticket
|
|
if they were reserved. They should have been released already at the
|
|
end of the previous statement, but because inside LOCK TABLES the
|
|
lock count method does not work to mark the end of a SELECT statement,
|
|
that may not be the case. We MUST release the search latch before an
|
|
INSERT, for example. */
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
/* Reset the AUTOINC statement level counter for multi-row INSERTs. */
|
|
trx->n_autoinc_rows = 0;
|
|
|
|
prebuilt->sql_stat_start = TRUE;
|
|
prebuilt->hint_need_to_fetch_extra_cols = 0;
|
|
reset_template(prebuilt);
|
|
|
|
if (!prebuilt->mysql_has_locked) {
|
|
/* This handle is for a temporary table created inside
|
|
this same LOCK TABLES; since MySQL does NOT call external_lock
|
|
in this case, we must use x-row locks inside InnoDB to be
|
|
prepared for an update of a row */
|
|
|
|
prebuilt->select_lock_type = LOCK_X;
|
|
} else {
|
|
if (trx->isolation_level != TRX_ISO_SERIALIZABLE
|
|
&& thd_sql_command(thd) == SQLCOM_SELECT
|
|
&& lock_type == TL_READ) {
|
|
|
|
/* For other than temporary tables, we obtain
|
|
no lock for consistent read (plain SELECT). */
|
|
|
|
prebuilt->select_lock_type = LOCK_NONE;
|
|
} else {
|
|
/* Not a consistent read: restore the
|
|
select_lock_type value. The value of
|
|
stored_select_lock_type was decided in:
|
|
1) ::store_lock(),
|
|
2) ::external_lock(),
|
|
3) ::init_table_handle_for_HANDLER(), and
|
|
4) ::transactional_table_lock(). */
|
|
|
|
prebuilt->select_lock_type =
|
|
prebuilt->stored_select_lock_type;
|
|
}
|
|
}
|
|
|
|
trx->detailed_error[0] = '\0';
|
|
|
|
/* Set the MySQL flag to mark that there is an active transaction */
|
|
if (trx->active_trans == 0) {
|
|
|
|
innobase_register_trx_and_stmt(ht, thd);
|
|
trx->active_trans = 1;
|
|
} else {
|
|
innobase_register_stmt(ht, thd);
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Maps a MySQL trx isolation level code to the InnoDB isolation level code */
|
|
static inline
|
|
ulint
|
|
innobase_map_isolation_level(
|
|
/*=========================*/
|
|
/* out: InnoDB isolation level */
|
|
enum_tx_isolation iso) /* in: MySQL isolation level code */
|
|
{
|
|
switch(iso) {
|
|
case ISO_REPEATABLE_READ: return(TRX_ISO_REPEATABLE_READ);
|
|
case ISO_READ_COMMITTED: return(TRX_ISO_READ_COMMITTED);
|
|
case ISO_SERIALIZABLE: return(TRX_ISO_SERIALIZABLE);
|
|
case ISO_READ_UNCOMMITTED: return(TRX_ISO_READ_UNCOMMITTED);
|
|
default: ut_a(0); return(0);
|
|
}
|
|
}
|
|
|
|
/**********************************************************************
|
|
As MySQL will execute an external lock for every new table it uses when it
|
|
starts to process an SQL statement (an exception is when MySQL calls
|
|
start_stmt for the handle) we can use this function to store the pointer to
|
|
the THD in the handle. We will also use this function to communicate
|
|
to InnoDB that a new SQL statement has started and that we must store a
|
|
savepoint to our transaction handle, so that we are able to roll back
|
|
the SQL statement in case of an error. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::external_lock(
|
|
/*=======================*/
|
|
/* out: 0 */
|
|
THD* thd, /* in: handle to the user thread */
|
|
int lock_type) /* in: lock type */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ENTER("ha_innobase::external_lock");
|
|
DBUG_PRINT("enter",("lock_type: %d", lock_type));
|
|
|
|
update_thd(thd);
|
|
|
|
/* Statement based binlogging does not work in isolation level
|
|
READ UNCOMMITTED and READ COMMITTED since the necessary
|
|
locks cannot be taken. In this case, we print an
|
|
informative error message and return with an error. */
|
|
if (lock_type == F_WRLCK)
|
|
{
|
|
ulong const binlog_format= thd_binlog_format(thd);
|
|
ulong const tx_isolation = thd_tx_isolation(ha_thd());
|
|
if (tx_isolation <= ISO_READ_COMMITTED &&
|
|
binlog_format == BINLOG_FORMAT_STMT)
|
|
{
|
|
char buf[256];
|
|
my_snprintf(buf, sizeof(buf),
|
|
"Transaction level '%s' in"
|
|
" InnoDB is not safe for binlog mode '%s'",
|
|
tx_isolation_names[tx_isolation],
|
|
binlog_format_names[binlog_format]);
|
|
my_error(ER_BINLOG_LOGGING_IMPOSSIBLE, MYF(0), buf);
|
|
DBUG_RETURN(HA_ERR_LOGGING_IMPOSSIBLE);
|
|
}
|
|
}
|
|
|
|
|
|
trx = prebuilt->trx;
|
|
|
|
prebuilt->sql_stat_start = TRUE;
|
|
prebuilt->hint_need_to_fetch_extra_cols = 0;
|
|
|
|
reset_template(prebuilt);
|
|
|
|
if (lock_type == F_WRLCK) {
|
|
|
|
/* If this is a SELECT, then it is in UPDATE TABLE ...
|
|
or SELECT ... FOR UPDATE */
|
|
prebuilt->select_lock_type = LOCK_X;
|
|
prebuilt->stored_select_lock_type = LOCK_X;
|
|
}
|
|
|
|
if (lock_type != F_UNLCK) {
|
|
/* MySQL is setting a new table lock */
|
|
|
|
trx->detailed_error[0] = '\0';
|
|
|
|
/* Set the MySQL flag to mark that there is an active
|
|
transaction */
|
|
if (trx->active_trans == 0) {
|
|
|
|
innobase_register_trx_and_stmt(ht, thd);
|
|
trx->active_trans = 1;
|
|
} else if (trx->n_mysql_tables_in_use == 0) {
|
|
innobase_register_stmt(ht, thd);
|
|
}
|
|
|
|
if (trx->isolation_level == TRX_ISO_SERIALIZABLE
|
|
&& prebuilt->select_lock_type == LOCK_NONE
|
|
&& thd_test_options(thd,
|
|
OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
|
|
|
|
/* To get serializable execution, we let InnoDB
|
|
conceptually add 'LOCK IN SHARE MODE' to all SELECTs
|
|
which otherwise would have been consistent reads. An
|
|
exception is consistent reads in the AUTOCOMMIT=1 mode:
|
|
we know that they are read-only transactions, and they
|
|
can be serialized also if performed as consistent
|
|
reads. */
|
|
|
|
prebuilt->select_lock_type = LOCK_S;
|
|
prebuilt->stored_select_lock_type = LOCK_S;
|
|
}
|
|
|
|
/* Starting from 4.1.9, no InnoDB table lock is taken in LOCK
|
|
TABLES if AUTOCOMMIT=1. It does not make much sense to acquire
|
|
an InnoDB table lock if it is released immediately at the end
|
|
of LOCK TABLES, and InnoDB's table locks in that case cause
|
|
VERY easily deadlocks.
|
|
|
|
We do not set InnoDB table locks if user has not explicitly
|
|
requested a table lock. Note that thd_in_lock_tables(thd)
|
|
can hold in some cases, e.g., at the start of a stored
|
|
procedure call (SQLCOM_CALL). */
|
|
|
|
if (prebuilt->select_lock_type != LOCK_NONE) {
|
|
|
|
if (thd_sql_command(thd) == SQLCOM_LOCK_TABLES
|
|
&& THDVAR(thd, table_locks)
|
|
&& thd_test_options(thd, OPTION_NOT_AUTOCOMMIT)
|
|
&& thd_in_lock_tables(thd)) {
|
|
|
|
ulint error = row_lock_table_for_mysql(
|
|
prebuilt, NULL, 0);
|
|
|
|
if (error != DB_SUCCESS) {
|
|
error = convert_error_code_to_mysql(
|
|
(int) error, 0, thd);
|
|
DBUG_RETURN((int) error);
|
|
}
|
|
}
|
|
|
|
trx->mysql_n_tables_locked++;
|
|
}
|
|
|
|
trx->n_mysql_tables_in_use++;
|
|
prebuilt->mysql_has_locked = TRUE;
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/* MySQL is releasing a table lock */
|
|
|
|
trx->n_mysql_tables_in_use--;
|
|
prebuilt->mysql_has_locked = FALSE;
|
|
|
|
/* Release a possible FIFO ticket and search latch. Since we
|
|
may reserve the kernel mutex, we have to release the search
|
|
system latch first to obey the latching order. */
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
/* If the MySQL lock count drops to zero we know that the current SQL
|
|
statement has ended */
|
|
|
|
if (trx->n_mysql_tables_in_use == 0) {
|
|
|
|
trx->mysql_n_tables_locked = 0;
|
|
prebuilt->used_in_HANDLER = FALSE;
|
|
|
|
if (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
|
|
if (trx->active_trans != 0) {
|
|
innobase_commit(ht, thd, TRUE);
|
|
}
|
|
} else {
|
|
if (trx->isolation_level <= TRX_ISO_READ_COMMITTED
|
|
&& trx->global_read_view) {
|
|
|
|
/* At low transaction isolation levels we let
|
|
each consistent read set its own snapshot */
|
|
|
|
read_view_close_for_mysql(trx);
|
|
}
|
|
}
|
|
}
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/**********************************************************************
|
|
With this function MySQL request a transactional lock to a table when
|
|
user issued query LOCK TABLES..WHERE ENGINE = InnoDB. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::transactional_table_lock(
|
|
/*==================================*/
|
|
/* out: error code */
|
|
THD* thd, /* in: handle to the user thread */
|
|
int lock_type) /* in: lock type */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ENTER("ha_innobase::transactional_table_lock");
|
|
DBUG_PRINT("enter",("lock_type: %d", lock_type));
|
|
|
|
/* We do not know if MySQL can call this function before calling
|
|
external_lock(). To be safe, update the thd of the current table
|
|
handle. */
|
|
|
|
update_thd(thd);
|
|
|
|
if (prebuilt->table->ibd_file_missing && !thd_tablespace_op(thd)) {
|
|
ut_print_timestamp(stderr);
|
|
fprintf(stderr,
|
|
" InnoDB: MySQL is trying to use a table handle"
|
|
" but the .ibd file for\n"
|
|
"InnoDB: table %s does not exist.\n"
|
|
"InnoDB: Have you deleted the .ibd file"
|
|
" from the database directory under\n"
|
|
"InnoDB: the MySQL datadir?"
|
|
"InnoDB: See"
|
|
" http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html\n"
|
|
"InnoDB: how you can resolve the problem.\n",
|
|
prebuilt->table->name);
|
|
DBUG_RETURN(HA_ERR_CRASHED);
|
|
}
|
|
|
|
trx = prebuilt->trx;
|
|
|
|
prebuilt->sql_stat_start = TRUE;
|
|
prebuilt->hint_need_to_fetch_extra_cols = 0;
|
|
|
|
reset_template(prebuilt);
|
|
|
|
if (lock_type == F_WRLCK) {
|
|
prebuilt->select_lock_type = LOCK_X;
|
|
prebuilt->stored_select_lock_type = LOCK_X;
|
|
} else if (lock_type == F_RDLCK) {
|
|
prebuilt->select_lock_type = LOCK_S;
|
|
prebuilt->stored_select_lock_type = LOCK_S;
|
|
} else {
|
|
ut_print_timestamp(stderr);
|
|
fprintf(stderr, " InnoDB error:\n"
|
|
"MySQL is trying to set transactional table lock with corrupted lock type\n"
|
|
"to table %s, lock type %d does not exist.\n",
|
|
prebuilt->table->name, lock_type);
|
|
DBUG_RETURN(HA_ERR_CRASHED);
|
|
}
|
|
|
|
/* MySQL is setting a new transactional table lock */
|
|
|
|
/* Set the MySQL flag to mark that there is an active transaction */
|
|
if (trx->active_trans == 0) {
|
|
|
|
innobase_register_trx_and_stmt(ht, thd);
|
|
trx->active_trans = 1;
|
|
}
|
|
|
|
if (THDVAR(thd, table_locks) && thd_in_lock_tables(thd)) {
|
|
ulint error = DB_SUCCESS;
|
|
|
|
error = row_lock_table_for_mysql(prebuilt, NULL, 0);
|
|
|
|
if (error != DB_SUCCESS) {
|
|
error = convert_error_code_to_mysql(
|
|
(int) error, prebuilt->table->flags, thd);
|
|
DBUG_RETURN((int) error);
|
|
}
|
|
|
|
if (thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) {
|
|
|
|
/* Store the current undo_no of the transaction
|
|
so that we know where to roll back if we have
|
|
to roll back the next SQL statement */
|
|
|
|
trx_mark_sql_stat_end(trx);
|
|
}
|
|
}
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Here we export InnoDB status variables to MySQL. */
|
|
static
|
|
int
|
|
innodb_export_status()
|
|
/*==================*/
|
|
{
|
|
if (innodb_inited) {
|
|
srv_export_innodb_status();
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Implements the SHOW INNODB STATUS command. Sends the output of the InnoDB
|
|
Monitor to the client. */
|
|
static
|
|
bool
|
|
innodb_show_status(
|
|
/*===============*/
|
|
handlerton* hton, /* in: the innodb handlerton */
|
|
THD* thd, /* in: the MySQL query thread of the caller */
|
|
stat_print_fn *stat_print)
|
|
{
|
|
trx_t* trx;
|
|
static const char truncated_msg[] = "... truncated...\n";
|
|
const long MAX_STATUS_SIZE = 64000;
|
|
ulint trx_list_start = ULINT_UNDEFINED;
|
|
ulint trx_list_end = ULINT_UNDEFINED;
|
|
|
|
DBUG_ENTER("innodb_show_status");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
/* We let the InnoDB Monitor to output at most MAX_STATUS_SIZE
|
|
bytes of text. */
|
|
|
|
long flen, usable_len;
|
|
char* str;
|
|
|
|
mutex_enter(&srv_monitor_file_mutex);
|
|
rewind(srv_monitor_file);
|
|
srv_printf_innodb_monitor(srv_monitor_file,
|
|
&trx_list_start, &trx_list_end);
|
|
flen = ftell(srv_monitor_file);
|
|
os_file_set_eof(srv_monitor_file);
|
|
|
|
if (flen < 0) {
|
|
flen = 0;
|
|
}
|
|
|
|
if (flen > MAX_STATUS_SIZE) {
|
|
usable_len = MAX_STATUS_SIZE;
|
|
} else {
|
|
usable_len = flen;
|
|
}
|
|
|
|
/* allocate buffer for the string, and
|
|
read the contents of the temporary file */
|
|
|
|
if (!(str = (char*) my_malloc(usable_len + 1, MYF(0)))) {
|
|
mutex_exit(&srv_monitor_file_mutex);
|
|
DBUG_RETURN(TRUE);
|
|
}
|
|
|
|
rewind(srv_monitor_file);
|
|
if (flen < MAX_STATUS_SIZE) {
|
|
/* Display the entire output. */
|
|
flen = (long) fread(str, 1, flen, srv_monitor_file);
|
|
} else if (trx_list_end < (ulint) flen
|
|
&& trx_list_start < trx_list_end
|
|
&& trx_list_start + (flen - trx_list_end)
|
|
< MAX_STATUS_SIZE - sizeof truncated_msg - 1) {
|
|
/* Omit the beginning of the list of active transactions. */
|
|
long len = (long) fread(str, 1, trx_list_start, srv_monitor_file);
|
|
memcpy(str + len, truncated_msg, sizeof truncated_msg - 1);
|
|
len += sizeof truncated_msg - 1;
|
|
usable_len = (MAX_STATUS_SIZE - 1) - len;
|
|
fseek(srv_monitor_file, flen - usable_len, SEEK_SET);
|
|
len += (long) fread(str + len, 1, usable_len, srv_monitor_file);
|
|
flen = len;
|
|
} else {
|
|
/* Omit the end of the output. */
|
|
flen = (long) fread(str, 1, MAX_STATUS_SIZE - 1, srv_monitor_file);
|
|
}
|
|
|
|
mutex_exit(&srv_monitor_file_mutex);
|
|
|
|
bool result = FALSE;
|
|
|
|
if (stat_print(thd, innobase_hton_name, strlen(innobase_hton_name),
|
|
STRING_WITH_LEN(""), str, flen)) {
|
|
result= TRUE;
|
|
}
|
|
my_free(str, MYF(0));
|
|
|
|
DBUG_RETURN(FALSE);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Implements the SHOW MUTEX STATUS command. . */
|
|
static
|
|
bool
|
|
innodb_mutex_show_status(
|
|
/*=====================*/
|
|
handlerton* hton, /* in: the innodb handlerton */
|
|
THD* thd, /* in: the MySQL query thread of the
|
|
caller */
|
|
stat_print_fn* stat_print)
|
|
{
|
|
char buf1[IO_SIZE], buf2[IO_SIZE];
|
|
mutex_t* mutex;
|
|
#ifdef UNIV_DEBUG
|
|
ulint rw_lock_count= 0;
|
|
ulint rw_lock_count_spin_loop= 0;
|
|
ulint rw_lock_count_spin_rounds= 0;
|
|
ulint rw_lock_count_os_wait= 0;
|
|
ulint rw_lock_count_os_yield= 0;
|
|
ulonglong rw_lock_wait_time= 0;
|
|
#endif /* UNIV_DEBUG */
|
|
uint hton_name_len= strlen(innobase_hton_name), buf1len, buf2len;
|
|
DBUG_ENTER("innodb_mutex_show_status");
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
mutex_enter(&mutex_list_mutex);
|
|
|
|
mutex = UT_LIST_GET_FIRST(mutex_list);
|
|
|
|
while (mutex != NULL) {
|
|
#ifdef UNIV_DEBUG
|
|
if (mutex->mutex_type != 1) {
|
|
if (mutex->count_using > 0) {
|
|
buf1len= my_snprintf(buf1, sizeof(buf1),
|
|
"%s:%s",
|
|
mutex->cmutex_name, mutex->cfile_name);
|
|
buf2len= my_snprintf(buf2, sizeof(buf2),
|
|
"count=%lu, spin_waits=%lu,"
|
|
" spin_rounds=%lu, "
|
|
"os_waits=%lu, os_yields=%lu,"
|
|
" os_wait_times=%lu",
|
|
mutex->count_using,
|
|
mutex->count_spin_loop,
|
|
mutex->count_spin_rounds,
|
|
mutex->count_os_wait,
|
|
mutex->count_os_yield,
|
|
(ulong) (mutex->lspent_time/1000));
|
|
|
|
if (stat_print(thd, innobase_hton_name,
|
|
hton_name_len, buf1, buf1len,
|
|
buf2, buf2len)) {
|
|
mutex_exit(&mutex_list_mutex);
|
|
DBUG_RETURN(1);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
rw_lock_count += mutex->count_using;
|
|
rw_lock_count_spin_loop += mutex->count_spin_loop;
|
|
rw_lock_count_spin_rounds += mutex->count_spin_rounds;
|
|
rw_lock_count_os_wait += mutex->count_os_wait;
|
|
rw_lock_count_os_yield += mutex->count_os_yield;
|
|
rw_lock_wait_time += mutex->lspent_time;
|
|
}
|
|
#else /* UNIV_DEBUG */
|
|
buf1len= my_snprintf(buf1, sizeof(buf1), "%s:%lu",
|
|
mutex->cfile_name, (ulong) mutex->cline);
|
|
buf2len= my_snprintf(buf2, sizeof(buf2), "os_waits=%lu",
|
|
mutex->count_os_wait);
|
|
|
|
if (stat_print(thd, innobase_hton_name,
|
|
hton_name_len, buf1, buf1len,
|
|
buf2, buf2len)) {
|
|
mutex_exit(&mutex_list_mutex);
|
|
DBUG_RETURN(1);
|
|
}
|
|
#endif /* UNIV_DEBUG */
|
|
|
|
mutex = UT_LIST_GET_NEXT(list, mutex);
|
|
}
|
|
|
|
mutex_exit(&mutex_list_mutex);
|
|
|
|
#ifdef UNIV_DEBUG
|
|
buf2len= my_snprintf(buf2, sizeof(buf2),
|
|
"count=%lu, spin_waits=%lu, spin_rounds=%lu, "
|
|
"os_waits=%lu, os_yields=%lu, os_wait_times=%lu",
|
|
rw_lock_count, rw_lock_count_spin_loop,
|
|
rw_lock_count_spin_rounds,
|
|
rw_lock_count_os_wait, rw_lock_count_os_yield,
|
|
(ulong) (rw_lock_wait_time/1000));
|
|
|
|
if (stat_print(thd, innobase_hton_name, hton_name_len,
|
|
STRING_WITH_LEN("rw_lock_mutexes"), buf2, buf2len)) {
|
|
DBUG_RETURN(1);
|
|
}
|
|
#endif /* UNIV_DEBUG */
|
|
|
|
DBUG_RETURN(FALSE);
|
|
}
|
|
|
|
static
|
|
bool innobase_show_status(handlerton *hton, THD* thd,
|
|
stat_print_fn* stat_print,
|
|
enum ha_stat_type stat_type)
|
|
{
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
switch (stat_type) {
|
|
case HA_ENGINE_STATUS:
|
|
return innodb_show_status(hton, thd, stat_print);
|
|
case HA_ENGINE_MUTEX:
|
|
return innodb_mutex_show_status(hton, thd, stat_print);
|
|
default:
|
|
return(FALSE);
|
|
}
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
Handling the shared INNOBASE_SHARE structure that is needed to provide table
|
|
locking.
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
Folds a string in system_charset_info. */
|
|
static
|
|
ulint
|
|
innobase_fold_name(
|
|
/*===============*/
|
|
/* out: fold value of the name */
|
|
const uchar* name, /* in: string to be folded */
|
|
size_t length) /* in: length of the name in bytes */
|
|
{
|
|
ulong n1 = 1, n2 = 4;
|
|
|
|
system_charset_info->coll->hash_sort(system_charset_info,
|
|
name, length, &n1, &n2);
|
|
return((ulint) n1);
|
|
}
|
|
|
|
static INNOBASE_SHARE* get_share(const char* table_name)
|
|
{
|
|
INNOBASE_SHARE *share;
|
|
pthread_mutex_lock(&innobase_share_mutex);
|
|
uint length=(uint) strlen(table_name);
|
|
|
|
ulint fold = innobase_fold_name((const uchar*) table_name, length);
|
|
|
|
HASH_SEARCH(table_name_hash, innobase_open_tables, fold,
|
|
INNOBASE_SHARE*, share,
|
|
ut_ad(share->use_count > 0),
|
|
!my_strnncoll(system_charset_info,
|
|
share->table_name,
|
|
share->table_name_length,
|
|
(const uchar*) table_name, length));
|
|
|
|
if (!share) {
|
|
|
|
/* TODO: invoke HASH_MIGRATE if innobase_open_tables
|
|
grows too big */
|
|
|
|
share = (INNOBASE_SHARE *) my_malloc(sizeof(*share)+length+1,
|
|
MYF(MY_FAE | MY_ZEROFILL));
|
|
|
|
share->table_name_length = length;
|
|
share->table_name = (uchar*) memcpy(share + 1,
|
|
table_name, length + 1);
|
|
|
|
HASH_INSERT(INNOBASE_SHARE, table_name_hash,
|
|
innobase_open_tables, fold, share);
|
|
|
|
thr_lock_init(&share->lock);
|
|
pthread_mutex_init(&share->mutex,MY_MUTEX_INIT_FAST);
|
|
}
|
|
|
|
share->use_count++;
|
|
pthread_mutex_unlock(&innobase_share_mutex);
|
|
|
|
return(share);
|
|
}
|
|
|
|
static void free_share(INNOBASE_SHARE* share)
|
|
{
|
|
pthread_mutex_lock(&innobase_share_mutex);
|
|
|
|
#ifdef UNIV_DEBUG
|
|
INNOBASE_SHARE* share2;
|
|
ulint fold = innobase_fold_name(share->table_name,
|
|
share->table_name_length);
|
|
|
|
HASH_SEARCH(table_name_hash, innobase_open_tables, fold,
|
|
INNOBASE_SHARE*, share2,
|
|
ut_ad(share->use_count > 0),
|
|
!my_strnncoll(system_charset_info,
|
|
share->table_name,
|
|
share->table_name_length,
|
|
share2->table_name,
|
|
share2->table_name_length));
|
|
|
|
ut_a(share2 == share);
|
|
#endif /* UNIV_DEBUG */
|
|
|
|
if (!--share->use_count) {
|
|
ulint fold = innobase_fold_name(share->table_name,
|
|
share->table_name_length);
|
|
|
|
HASH_DELETE(INNOBASE_SHARE, table_name_hash,
|
|
innobase_open_tables, fold, share);
|
|
thr_lock_delete(&share->lock);
|
|
pthread_mutex_destroy(&share->mutex);
|
|
my_free(share, MYF(0));
|
|
|
|
/* TODO: invoke HASH_MIGRATE if innobase_open_tables
|
|
shrinks too much */
|
|
}
|
|
|
|
pthread_mutex_unlock(&innobase_share_mutex);
|
|
}
|
|
|
|
/*********************************************************************
|
|
Converts a MySQL table lock stored in the 'lock' field of the handle to
|
|
a proper type before storing pointer to the lock into an array of pointers.
|
|
MySQL also calls this if it wants to reset some table locks to a not-locked
|
|
state during the processing of an SQL query. An example is that during a
|
|
SELECT the read lock is released early on the 'const' tables where we only
|
|
fetch one row. MySQL does not call this when it releases all locks at the
|
|
end of an SQL statement. */
|
|
UNIV_INTERN
|
|
THR_LOCK_DATA**
|
|
ha_innobase::store_lock(
|
|
/*====================*/
|
|
/* out: pointer to the next
|
|
element in the 'to' array */
|
|
THD* thd, /* in: user thread handle */
|
|
THR_LOCK_DATA** to, /* in: pointer to an array
|
|
of pointers to lock structs;
|
|
pointer to the 'lock' field
|
|
of current handle is stored
|
|
next to this array */
|
|
enum thr_lock_type lock_type) /* in: lock type to store in
|
|
'lock'; this may also be
|
|
TL_IGNORE */
|
|
{
|
|
trx_t* trx;
|
|
|
|
/* Note that trx in this function is NOT necessarily prebuilt->trx
|
|
because we call update_thd() later, in ::external_lock()! Failure to
|
|
understand this caused a serious memory corruption bug in 5.1.11. */
|
|
|
|
trx = check_trx_exists(thd);
|
|
|
|
/* NOTE: MySQL can call this function with lock 'type' TL_IGNORE!
|
|
Be careful to ignore TL_IGNORE if we are going to do something with
|
|
only 'real' locks! */
|
|
|
|
/* If no MySQL table is in use, we need to set the isolation level
|
|
of the transaction. */
|
|
|
|
if (lock_type != TL_IGNORE
|
|
&& trx->n_mysql_tables_in_use == 0) {
|
|
trx->isolation_level = innobase_map_isolation_level(
|
|
(enum_tx_isolation) thd_tx_isolation(thd));
|
|
|
|
if (trx->isolation_level <= TRX_ISO_READ_COMMITTED
|
|
&& trx->global_read_view) {
|
|
|
|
/* At low transaction isolation levels we let
|
|
each consistent read set its own snapshot */
|
|
|
|
read_view_close_for_mysql(trx);
|
|
}
|
|
}
|
|
|
|
DBUG_ASSERT(EQ_CURRENT_THD(thd));
|
|
const bool in_lock_tables = thd_in_lock_tables(thd);
|
|
const uint sql_command = thd_sql_command(thd);
|
|
|
|
if (sql_command == SQLCOM_DROP_TABLE) {
|
|
|
|
/* MySQL calls this function in DROP TABLE though this table
|
|
handle may belong to another thd that is running a query. Let
|
|
us in that case skip any changes to the prebuilt struct. */
|
|
|
|
} else if ((lock_type == TL_READ && in_lock_tables)
|
|
|| (lock_type == TL_READ_HIGH_PRIORITY && in_lock_tables)
|
|
|| lock_type == TL_READ_WITH_SHARED_LOCKS
|
|
|| lock_type == TL_READ_NO_INSERT
|
|
|| (lock_type != TL_IGNORE
|
|
&& sql_command != SQLCOM_SELECT)) {
|
|
|
|
/* The OR cases above are in this order:
|
|
1) MySQL is doing LOCK TABLES ... READ LOCAL, or we
|
|
are processing a stored procedure or function, or
|
|
2) (we do not know when TL_READ_HIGH_PRIORITY is used), or
|
|
3) this is a SELECT ... IN SHARE MODE, or
|
|
4) we are doing a complex SQL statement like
|
|
INSERT INTO ... SELECT ... and the logical logging (MySQL
|
|
binlog) requires the use of a locking read, or
|
|
MySQL is doing LOCK TABLES ... READ.
|
|
5) we let InnoDB do locking reads for all SQL statements that
|
|
are not simple SELECTs; note that select_lock_type in this
|
|
case may get strengthened in ::external_lock() to LOCK_X.
|
|
Note that we MUST use a locking read in all data modifying
|
|
SQL statements, because otherwise the execution would not be
|
|
serializable, and also the results from the update could be
|
|
unexpected if an obsolete consistent read view would be
|
|
used. */
|
|
|
|
ulint isolation_level;
|
|
|
|
isolation_level = trx->isolation_level;
|
|
|
|
if ((srv_locks_unsafe_for_binlog
|
|
|| isolation_level == TRX_ISO_READ_COMMITTED)
|
|
&& isolation_level != TRX_ISO_SERIALIZABLE
|
|
&& (lock_type == TL_READ || lock_type == TL_READ_NO_INSERT)
|
|
&& (sql_command == SQLCOM_INSERT_SELECT
|
|
|| sql_command == SQLCOM_UPDATE
|
|
|| sql_command == SQLCOM_CREATE_TABLE)) {
|
|
|
|
/* If we either have innobase_locks_unsafe_for_binlog
|
|
option set or this session is using READ COMMITTED
|
|
isolation level and isolation level of the transaction
|
|
is not set to serializable and MySQL is doing
|
|
INSERT INTO...SELECT or UPDATE ... = (SELECT ...) or
|
|
CREATE ... SELECT... without FOR UPDATE or
|
|
IN SHARE MODE in select, then we use consistent
|
|
read for select. */
|
|
|
|
prebuilt->select_lock_type = LOCK_NONE;
|
|
prebuilt->stored_select_lock_type = LOCK_NONE;
|
|
} else if (sql_command == SQLCOM_CHECKSUM) {
|
|
/* Use consistent read for checksum table */
|
|
|
|
prebuilt->select_lock_type = LOCK_NONE;
|
|
prebuilt->stored_select_lock_type = LOCK_NONE;
|
|
} else {
|
|
prebuilt->select_lock_type = LOCK_S;
|
|
prebuilt->stored_select_lock_type = LOCK_S;
|
|
}
|
|
|
|
} else if (lock_type != TL_IGNORE) {
|
|
|
|
/* We set possible LOCK_X value in external_lock, not yet
|
|
here even if this would be SELECT ... FOR UPDATE */
|
|
|
|
prebuilt->select_lock_type = LOCK_NONE;
|
|
prebuilt->stored_select_lock_type = LOCK_NONE;
|
|
}
|
|
|
|
if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK) {
|
|
|
|
/* Starting from 5.0.7, we weaken also the table locks
|
|
set at the start of a MySQL stored procedure call, just like
|
|
we weaken the locks set at the start of an SQL statement.
|
|
MySQL does set in_lock_tables TRUE there, but in reality
|
|
we do not need table locks to make the execution of a
|
|
single transaction stored procedure call deterministic
|
|
(if it does not use a consistent read). */
|
|
|
|
if (lock_type == TL_READ
|
|
&& sql_command == SQLCOM_LOCK_TABLES) {
|
|
/* We come here if MySQL is processing LOCK TABLES
|
|
... READ LOCAL. MyISAM under that table lock type
|
|
reads the table as it was at the time the lock was
|
|
granted (new inserts are allowed, but not seen by the
|
|
reader). To get a similar effect on an InnoDB table,
|
|
we must use LOCK TABLES ... READ. We convert the lock
|
|
type here, so that for InnoDB, READ LOCAL is
|
|
equivalent to READ. This will change the InnoDB
|
|
behavior in mysqldump, so that dumps of InnoDB tables
|
|
are consistent with dumps of MyISAM tables. */
|
|
|
|
lock_type = TL_READ_NO_INSERT;
|
|
}
|
|
|
|
/* If we are not doing a LOCK TABLE, DISCARD/IMPORT
|
|
TABLESPACE or TRUNCATE TABLE then allow multiple
|
|
writers. Note that ALTER TABLE uses a TL_WRITE_ALLOW_READ
|
|
< TL_WRITE_CONCURRENT_INSERT.
|
|
|
|
We especially allow multiple writers if MySQL is at the
|
|
start of a stored procedure call (SQLCOM_CALL) or a
|
|
stored function call (MySQL does have in_lock_tables
|
|
TRUE there). */
|
|
|
|
if ((lock_type >= TL_WRITE_CONCURRENT_INSERT
|
|
&& lock_type <= TL_WRITE)
|
|
&& !(in_lock_tables
|
|
&& sql_command == SQLCOM_LOCK_TABLES)
|
|
&& !thd_tablespace_op(thd)
|
|
&& sql_command != SQLCOM_TRUNCATE
|
|
&& sql_command != SQLCOM_OPTIMIZE
|
|
&& sql_command != SQLCOM_CREATE_TABLE) {
|
|
|
|
lock_type = TL_WRITE_ALLOW_WRITE;
|
|
}
|
|
|
|
/* In queries of type INSERT INTO t1 SELECT ... FROM t2 ...
|
|
MySQL would use the lock TL_READ_NO_INSERT on t2, and that
|
|
would conflict with TL_WRITE_ALLOW_WRITE, blocking all inserts
|
|
to t2. Convert the lock to a normal read lock to allow
|
|
concurrent inserts to t2.
|
|
|
|
We especially allow concurrent inserts if MySQL is at the
|
|
start of a stored procedure call (SQLCOM_CALL)
|
|
(MySQL does have thd_in_lock_tables() TRUE there). */
|
|
|
|
if (lock_type == TL_READ_NO_INSERT
|
|
&& sql_command != SQLCOM_LOCK_TABLES) {
|
|
|
|
lock_type = TL_READ;
|
|
}
|
|
|
|
lock.type = lock_type;
|
|
}
|
|
|
|
*to++= &lock;
|
|
|
|
return(to);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
Read the next autoinc value. Acquire the relevant locks before reading
|
|
the AUTOINC value. If SUCCESS then the table AUTOINC mutex will be locked
|
|
on return and all relevant locks acquired. */
|
|
UNIV_INTERN
|
|
ulint
|
|
ha_innobase::innobase_get_autoinc(
|
|
/*==============================*/
|
|
/* out: DB_SUCCESS or error code */
|
|
ulonglong* value) /* out: autoinc value */
|
|
{
|
|
*value = 0;
|
|
|
|
prebuilt->autoinc_error = innobase_lock_autoinc();
|
|
|
|
if (prebuilt->autoinc_error == DB_SUCCESS) {
|
|
|
|
/* Determine the first value of the interval */
|
|
*value = dict_table_autoinc_read(prebuilt->table);
|
|
|
|
/* It should have been initialized during open. */
|
|
ut_a(*value != 0);
|
|
}
|
|
|
|
return(prebuilt->autoinc_error);
|
|
}
|
|
|
|
/***********************************************************************
|
|
This function reads the global auto-inc counter. It doesn't use the
|
|
AUTOINC lock even if the lock mode is set to TRADITIONAL. */
|
|
UNIV_INTERN
|
|
ulonglong
|
|
ha_innobase::innobase_peek_autoinc(void)
|
|
/*====================================*/
|
|
/* out: the autoinc value */
|
|
{
|
|
ulonglong auto_inc;
|
|
dict_table_t* innodb_table;
|
|
|
|
ut_a(prebuilt != NULL);
|
|
ut_a(prebuilt->table != NULL);
|
|
|
|
innodb_table = prebuilt->table;
|
|
|
|
dict_table_autoinc_lock(innodb_table);
|
|
|
|
auto_inc = dict_table_autoinc_read(innodb_table);
|
|
|
|
ut_a(auto_inc > 0);
|
|
|
|
dict_table_autoinc_unlock(innodb_table);
|
|
|
|
return(auto_inc);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
This function initializes the auto-inc counter if it has not been
|
|
initialized yet. This function does not change the value of the auto-inc
|
|
counter if it already has been initialized. Returns the value of the
|
|
auto-inc counter in *first_value, and ULONGLONG_MAX in *nb_reserved_values (as
|
|
we have a table-level lock). offset, increment, nb_desired_values are ignored.
|
|
*first_value is set to -1 if error (deadlock or lock wait timeout) */
|
|
UNIV_INTERN
|
|
void
|
|
ha_innobase::get_auto_increment(
|
|
/*============================*/
|
|
ulonglong offset, /* in: */
|
|
ulonglong increment, /* in: table autoinc increment */
|
|
ulonglong nb_desired_values, /* in: number of values reqd */
|
|
ulonglong *first_value, /* out: the autoinc value */
|
|
ulonglong *nb_reserved_values) /* out: count of reserved values */
|
|
{
|
|
trx_t* trx;
|
|
ulint error;
|
|
ulonglong autoinc = 0;
|
|
|
|
/* Prepare prebuilt->trx in the table handle */
|
|
update_thd(ha_thd());
|
|
|
|
error = innobase_get_autoinc(&autoinc);
|
|
|
|
if (error != DB_SUCCESS) {
|
|
*first_value = (~(ulonglong) 0);
|
|
return;
|
|
}
|
|
|
|
/* This is a hack, since nb_desired_values seems to be accurate only
|
|
for the first call to get_auto_increment() for multi-row INSERT and
|
|
meaningless for other statements e.g, LOAD etc. Subsequent calls to
|
|
this method for the same statement results in different values which
|
|
don't make sense. Therefore we store the value the first time we are
|
|
called and count down from that as rows are written (see write_row()).
|
|
*/
|
|
|
|
trx = prebuilt->trx;
|
|
|
|
/* Note: We can't rely on *first_value since some MySQL engines,
|
|
in particular the partition engine, don't initialize it to 0 when
|
|
invoking this method. So we are not sure if it's guaranteed to
|
|
be 0 or not. */
|
|
|
|
/* Called for the first time ? */
|
|
if (trx->n_autoinc_rows == 0) {
|
|
|
|
trx->n_autoinc_rows = (ulint) nb_desired_values;
|
|
|
|
/* It's possible for nb_desired_values to be 0:
|
|
e.g., INSERT INTO T1(C) SELECT C FROM T2; */
|
|
if (nb_desired_values == 0) {
|
|
|
|
trx->n_autoinc_rows = 1;
|
|
}
|
|
|
|
set_if_bigger(*first_value, autoinc);
|
|
/* Not in the middle of a mult-row INSERT. */
|
|
} else if (prebuilt->autoinc_last_value == 0) {
|
|
set_if_bigger(*first_value, autoinc);
|
|
}
|
|
|
|
*nb_reserved_values = trx->n_autoinc_rows;
|
|
|
|
/* With old style AUTOINC locking we only update the table's
|
|
AUTOINC counter after attempting to insert the row. */
|
|
if (innobase_autoinc_lock_mode != AUTOINC_OLD_STYLE_LOCKING) {
|
|
ulonglong need;
|
|
ulonglong next_value;
|
|
ulonglong col_max_value;
|
|
|
|
/* We need the upper limit of the col type to check for
|
|
whether we update the table autoinc counter or not. */
|
|
col_max_value = innobase_get_int_col_max_value(
|
|
table->next_number_field);
|
|
|
|
need = *nb_reserved_values * increment;
|
|
|
|
/* Compute the last value in the interval */
|
|
next_value = innobase_next_autoinc(
|
|
*first_value, need, offset, col_max_value);
|
|
|
|
prebuilt->autoinc_last_value = next_value;
|
|
|
|
ut_a(prebuilt->autoinc_last_value >= *first_value);
|
|
|
|
/* Update the table autoinc variable */
|
|
dict_table_autoinc_update_if_greater(
|
|
prebuilt->table, prebuilt->autoinc_last_value);
|
|
} else {
|
|
/* This will force write_row() into attempting an update
|
|
of the table's AUTOINC counter. */
|
|
prebuilt->autoinc_last_value = 0;
|
|
}
|
|
|
|
/* The increment to be used to increase the AUTOINC value, we use
|
|
this in write_row() and update_row() to increase the autoinc counter
|
|
for columns that are filled by the user. We need the offset and
|
|
the increment. */
|
|
prebuilt->autoinc_offset = offset;
|
|
prebuilt->autoinc_increment = increment;
|
|
|
|
dict_table_autoinc_unlock(prebuilt->table);
|
|
}
|
|
|
|
/* See comment in handler.h */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::reset_auto_increment(
|
|
/*==============================*/
|
|
ulonglong value) /* in: new value for table autoinc */
|
|
{
|
|
DBUG_ENTER("ha_innobase::reset_auto_increment");
|
|
|
|
int error;
|
|
|
|
update_thd(ha_thd());
|
|
|
|
error = row_lock_table_autoinc_for_mysql(prebuilt);
|
|
|
|
if (error != DB_SUCCESS) {
|
|
error = convert_error_code_to_mysql(error,
|
|
prebuilt->table->flags,
|
|
user_thd);
|
|
|
|
DBUG_RETURN(error);
|
|
}
|
|
|
|
/* The next value can never be 0. */
|
|
if (value == 0) {
|
|
value = 1;
|
|
}
|
|
|
|
innobase_reset_autoinc(value);
|
|
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
/* See comment in handler.cc */
|
|
UNIV_INTERN
|
|
bool
|
|
ha_innobase::get_error_message(int error, String *buf)
|
|
{
|
|
trx_t* trx = check_trx_exists(ha_thd());
|
|
|
|
buf->copy(trx->detailed_error, strlen(trx->detailed_error),
|
|
system_charset_info);
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Compares two 'refs'. A 'ref' is the (internal) primary key value of the row.
|
|
If there is no explicitly declared non-null unique key or a primary key, then
|
|
InnoDB internally uses the row id as the primary key. */
|
|
UNIV_INTERN
|
|
int
|
|
ha_innobase::cmp_ref(
|
|
/*=================*/
|
|
/* out: < 0 if ref1 < ref2, 0 if equal, else
|
|
> 0 */
|
|
const uchar* ref1, /* in: an (internal) primary key value in the
|
|
MySQL key value format */
|
|
const uchar* ref2) /* in: an (internal) primary key value in the
|
|
MySQL key value format */
|
|
{
|
|
enum_field_types mysql_type;
|
|
Field* field;
|
|
KEY_PART_INFO* key_part;
|
|
KEY_PART_INFO* key_part_end;
|
|
uint len1;
|
|
uint len2;
|
|
int result;
|
|
|
|
if (prebuilt->clust_index_was_generated) {
|
|
/* The 'ref' is an InnoDB row id */
|
|
|
|
return(memcmp(ref1, ref2, DATA_ROW_ID_LEN));
|
|
}
|
|
|
|
/* Do a type-aware comparison of primary key fields. PK fields
|
|
are always NOT NULL, so no checks for NULL are performed. */
|
|
|
|
key_part = table->key_info[table->s->primary_key].key_part;
|
|
|
|
key_part_end = key_part
|
|
+ table->key_info[table->s->primary_key].key_parts;
|
|
|
|
for (; key_part != key_part_end; ++key_part) {
|
|
field = key_part->field;
|
|
mysql_type = field->type();
|
|
|
|
if (mysql_type == MYSQL_TYPE_TINY_BLOB
|
|
|| mysql_type == MYSQL_TYPE_MEDIUM_BLOB
|
|
|| mysql_type == MYSQL_TYPE_BLOB
|
|
|| mysql_type == MYSQL_TYPE_LONG_BLOB) {
|
|
|
|
/* In the MySQL key value format, a column prefix of
|
|
a BLOB is preceded by a 2-byte length field */
|
|
|
|
len1 = innobase_read_from_2_little_endian(ref1);
|
|
len2 = innobase_read_from_2_little_endian(ref2);
|
|
|
|
ref1 += 2;
|
|
ref2 += 2;
|
|
result = ((Field_blob*)field)->cmp( ref1, len1,
|
|
ref2, len2);
|
|
} else {
|
|
result = field->key_cmp(ref1, ref2);
|
|
}
|
|
|
|
if (result) {
|
|
|
|
return(result);
|
|
}
|
|
|
|
ref1 += key_part->store_length;
|
|
ref2 += key_part->store_length;
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Ask InnoDB if a query to a table can be cached. */
|
|
UNIV_INTERN
|
|
my_bool
|
|
ha_innobase::register_query_cache_table(
|
|
/*====================================*/
|
|
/* out: TRUE if query caching
|
|
of the table is permitted */
|
|
THD* thd, /* in: user thread handle */
|
|
char* table_key, /* in: concatenation of database name,
|
|
the null character '\0',
|
|
and the table name */
|
|
uint key_length, /* in: length of the full name, i.e.
|
|
len(dbname) + len(tablename) + 1 */
|
|
qc_engine_callback*
|
|
call_back, /* out: pointer to function for
|
|
checking if query caching
|
|
is permitted */
|
|
ulonglong *engine_data) /* in/out: data to call_back */
|
|
{
|
|
*call_back = innobase_query_caching_of_table_permitted;
|
|
*engine_data = 0;
|
|
return(innobase_query_caching_of_table_permitted(thd, table_key,
|
|
key_length,
|
|
engine_data));
|
|
}
|
|
|
|
UNIV_INTERN
|
|
char*
|
|
ha_innobase::get_mysql_bin_log_name()
|
|
{
|
|
return(trx_sys_mysql_bin_log_name);
|
|
}
|
|
|
|
UNIV_INTERN
|
|
ulonglong
|
|
ha_innobase::get_mysql_bin_log_pos()
|
|
{
|
|
/* trx... is ib_int64_t, which is a typedef for a 64-bit integer
|
|
(__int64 or longlong) so it's ok to cast it to ulonglong. */
|
|
|
|
return(trx_sys_mysql_bin_log_pos);
|
|
}
|
|
|
|
/**********************************************************************
|
|
This function is used to find the storage length in bytes of the first n
|
|
characters for prefix indexes using a multibyte character set. The function
|
|
finds charset information and returns length of prefix_len characters in the
|
|
index field in bytes.
|
|
|
|
NOTE: the prototype of this function is copied to data0type.c! If you change
|
|
this function, you MUST change also data0type.c! */
|
|
extern "C" UNIV_INTERN
|
|
ulint
|
|
innobase_get_at_most_n_mbchars(
|
|
/*===========================*/
|
|
/* out: number of bytes occupied by the first
|
|
n characters */
|
|
ulint charset_id, /* in: character set id */
|
|
ulint prefix_len, /* in: prefix length in bytes of the index
|
|
(this has to be divided by mbmaxlen to get the
|
|
number of CHARACTERS n in the prefix) */
|
|
ulint data_len, /* in: length of the string in bytes */
|
|
const char* str) /* in: character string */
|
|
{
|
|
ulint char_length; /* character length in bytes */
|
|
ulint n_chars; /* number of characters in prefix */
|
|
CHARSET_INFO* charset; /* charset used in the field */
|
|
|
|
charset = get_charset((uint) charset_id, MYF(MY_WME));
|
|
|
|
ut_ad(charset);
|
|
ut_ad(charset->mbmaxlen);
|
|
|
|
/* Calculate how many characters at most the prefix index contains */
|
|
|
|
n_chars = prefix_len / charset->mbmaxlen;
|
|
|
|
/* If the charset is multi-byte, then we must find the length of the
|
|
first at most n chars in the string. If the string contains less
|
|
characters than n, then we return the length to the end of the last
|
|
character. */
|
|
|
|
if (charset->mbmaxlen > 1) {
|
|
/* my_charpos() returns the byte length of the first n_chars
|
|
characters, or a value bigger than the length of str, if
|
|
there were not enough full characters in str.
|
|
|
|
Why does the code below work:
|
|
Suppose that we are looking for n UTF-8 characters.
|
|
|
|
1) If the string is long enough, then the prefix contains at
|
|
least n complete UTF-8 characters + maybe some extra
|
|
characters + an incomplete UTF-8 character. No problem in
|
|
this case. The function returns the pointer to the
|
|
end of the nth character.
|
|
|
|
2) If the string is not long enough, then the string contains
|
|
the complete value of a column, that is, only complete UTF-8
|
|
characters, and we can store in the column prefix index the
|
|
whole string. */
|
|
|
|
char_length = my_charpos(charset, str,
|
|
str + data_len, (int) n_chars);
|
|
if (char_length > data_len) {
|
|
char_length = data_len;
|
|
}
|
|
} else {
|
|
if (data_len < prefix_len) {
|
|
char_length = data_len;
|
|
} else {
|
|
char_length = prefix_len;
|
|
}
|
|
}
|
|
|
|
return(char_length);
|
|
}
|
|
|
|
/***********************************************************************
|
|
This function is used to prepare X/Open XA distributed transaction */
|
|
static
|
|
int
|
|
innobase_xa_prepare(
|
|
/*================*/
|
|
/* out: 0 or error number */
|
|
handlerton *hton,
|
|
THD* thd, /* in: handle to the MySQL thread of the user
|
|
whose XA transaction should be prepared */
|
|
bool all) /* in: TRUE - commit transaction
|
|
FALSE - the current SQL statement ended */
|
|
{
|
|
int error = 0;
|
|
trx_t* trx = check_trx_exists(thd);
|
|
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
/* we use support_xa value as it was seen at transaction start
|
|
time, not the current session variable value. Any possible changes
|
|
to the session variable take effect only in the next transaction */
|
|
if (!trx->support_xa) {
|
|
|
|
return(0);
|
|
}
|
|
|
|
thd_get_xid(thd, (MYSQL_XID*) &trx->xid);
|
|
|
|
/* Release a possible FIFO ticket and search latch. Since we will
|
|
reserve the kernel mutex, we have to release the search system latch
|
|
first to obey the latching order. */
|
|
|
|
innobase_release_stat_resources(trx);
|
|
|
|
if (trx->active_trans == 0 && trx->conc_state != TRX_NOT_STARTED) {
|
|
|
|
sql_print_error("trx->active_trans == 0, but trx->conc_state != "
|
|
"TRX_NOT_STARTED");
|
|
}
|
|
|
|
if (all
|
|
|| (!thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))) {
|
|
|
|
/* We were instructed to prepare the whole transaction, or
|
|
this is an SQL statement end and autocommit is on */
|
|
|
|
ut_ad(trx->active_trans);
|
|
|
|
error = (int) trx_prepare_for_mysql(trx);
|
|
} else {
|
|
/* We just mark the SQL statement ended and do not do a
|
|
transaction prepare */
|
|
|
|
/* If we had reserved the auto-inc lock for some
|
|
table in this SQL statement we release it now */
|
|
|
|
row_unlock_table_autoinc_for_mysql(trx);
|
|
|
|
/* Store the current undo_no of the transaction so that we
|
|
know where to roll back if we have to roll back the next
|
|
SQL statement */
|
|
|
|
trx_mark_sql_stat_end(trx);
|
|
}
|
|
|
|
/* Tell the InnoDB server that there might be work for utility
|
|
threads: */
|
|
|
|
srv_active_wake_master_thread();
|
|
|
|
if (thd_sql_command(thd) != SQLCOM_XA_PREPARE &&
|
|
(all || !thd_test_options(thd, OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
|
|
{
|
|
|
|
/* For ibbackup to work the order of transactions in binlog
|
|
and InnoDB must be the same. Consider the situation
|
|
|
|
thread1> prepare; write to binlog; ...
|
|
<context switch>
|
|
thread2> prepare; write to binlog; commit
|
|
thread1> ... commit
|
|
|
|
To ensure this will not happen we're taking the mutex on
|
|
prepare, and releasing it on commit.
|
|
|
|
Note: only do it for normal commits, done via ha_commit_trans.
|
|
If 2pc protocol is executed by external transaction
|
|
coordinator, it will be just a regular MySQL client
|
|
executing XA PREPARE and XA COMMIT commands.
|
|
In this case we cannot know how many minutes or hours
|
|
will be between XA PREPARE and XA COMMIT, and we don't want
|
|
to block for undefined period of time.
|
|
*/
|
|
pthread_mutex_lock(&prepare_commit_mutex);
|
|
trx->active_trans = 2;
|
|
}
|
|
|
|
return(error);
|
|
}
|
|
|
|
/***********************************************************************
|
|
This function is used to recover X/Open XA distributed transactions */
|
|
static
|
|
int
|
|
innobase_xa_recover(
|
|
/*================*/
|
|
/* out: number of prepared transactions
|
|
stored in xid_list */
|
|
handlerton *hton,
|
|
XID* xid_list, /* in/out: prepared transactions */
|
|
uint len) /* in: number of slots in xid_list */
|
|
{
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
if (len == 0 || xid_list == NULL) {
|
|
|
|
return(0);
|
|
}
|
|
|
|
return(trx_recover_for_mysql(xid_list, len));
|
|
}
|
|
|
|
/***********************************************************************
|
|
This function is used to commit one X/Open XA distributed transaction
|
|
which is in the prepared state */
|
|
static
|
|
int
|
|
innobase_commit_by_xid(
|
|
/*===================*/
|
|
/* out: 0 or error number */
|
|
handlerton *hton,
|
|
XID* xid) /* in: X/Open XA transaction identification */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
trx = trx_get_trx_by_xid(xid);
|
|
|
|
if (trx) {
|
|
innobase_commit_low(trx);
|
|
|
|
return(XA_OK);
|
|
} else {
|
|
return(XAER_NOTA);
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
This function is used to rollback one X/Open XA distributed transaction
|
|
which is in the prepared state */
|
|
static
|
|
int
|
|
innobase_rollback_by_xid(
|
|
/*=====================*/
|
|
/* out: 0 or error number */
|
|
handlerton *hton,
|
|
XID *xid) /* in: X/Open XA transaction identification */
|
|
{
|
|
trx_t* trx;
|
|
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
trx = trx_get_trx_by_xid(xid);
|
|
|
|
if (trx) {
|
|
return(innobase_rollback_trx(trx));
|
|
} else {
|
|
return(XAER_NOTA);
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
Create a consistent view for a cursor based on current transaction
|
|
which is created if the corresponding MySQL thread still lacks one.
|
|
This consistent view is then used inside of MySQL when accessing records
|
|
using a cursor. */
|
|
static
|
|
void*
|
|
innobase_create_cursor_view(
|
|
/*========================*/
|
|
/* out: pointer to cursor view or NULL */
|
|
handlerton *hton, /* in: innobase hton */
|
|
THD* thd) /* in: user thread handle */
|
|
{
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
return(read_cursor_view_create_for_mysql(check_trx_exists(thd)));
|
|
}
|
|
|
|
/***********************************************************************
|
|
Close the given consistent cursor view of a transaction and restore
|
|
global read view to a transaction read view. Transaction is created if the
|
|
corresponding MySQL thread still lacks one. */
|
|
static
|
|
void
|
|
innobase_close_cursor_view(
|
|
/*=======================*/
|
|
handlerton *hton,
|
|
THD* thd, /* in: user thread handle */
|
|
void* curview)/* in: Consistent read view to be closed */
|
|
{
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
read_cursor_view_close_for_mysql(check_trx_exists(thd),
|
|
(cursor_view_t*) curview);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Set the given consistent cursor view to a transaction which is created
|
|
if the corresponding MySQL thread still lacks one. If the given
|
|
consistent cursor view is NULL global read view of a transaction is
|
|
restored to a transaction read view. */
|
|
static
|
|
void
|
|
innobase_set_cursor_view(
|
|
/*=====================*/
|
|
handlerton *hton,
|
|
THD* thd, /* in: user thread handle */
|
|
void* curview)/* in: Consistent cursor view to be set */
|
|
{
|
|
DBUG_ASSERT(hton == innodb_hton_ptr);
|
|
|
|
read_cursor_set_for_mysql(check_trx_exists(thd),
|
|
(cursor_view_t*) curview);
|
|
}
|
|
|
|
|
|
UNIV_INTERN
|
|
bool
|
|
ha_innobase::check_if_incompatible_data(
|
|
HA_CREATE_INFO* info,
|
|
uint table_changes)
|
|
{
|
|
if (table_changes != IS_EQUAL_YES) {
|
|
|
|
return(COMPATIBLE_DATA_NO);
|
|
}
|
|
|
|
/* Check that auto_increment value was not changed */
|
|
if ((info->used_fields & HA_CREATE_USED_AUTO) &&
|
|
info->auto_increment_value != 0) {
|
|
|
|
return(COMPATIBLE_DATA_NO);
|
|
}
|
|
|
|
/* Check that row format didn't change */
|
|
if ((info->used_fields & HA_CREATE_USED_ROW_FORMAT) &&
|
|
get_row_type() != info->row_type) {
|
|
|
|
return(COMPATIBLE_DATA_NO);
|
|
}
|
|
|
|
/* Specifying KEY_BLOCK_SIZE requests a rebuild of the table. */
|
|
if (info->used_fields & HA_CREATE_USED_KEY_BLOCK_SIZE) {
|
|
return(COMPATIBLE_DATA_NO);
|
|
}
|
|
|
|
return(COMPATIBLE_DATA_YES);
|
|
}
|
|
|
|
/****************************************************************
|
|
Validate the file format name and return its corresponding id. */
|
|
static
|
|
uint
|
|
innobase_file_format_name_lookup(
|
|
/*=============================*/
|
|
/* out: valid file format id*/
|
|
const char* format_name) /* in: pointer to file format name */
|
|
{
|
|
char* endp;
|
|
uint format_id;
|
|
|
|
ut_a(format_name != NULL);
|
|
|
|
/* The format name can contain the format id itself instead of
|
|
the name and we check for that. */
|
|
format_id = (uint) strtoul(format_name, &endp, 10);
|
|
|
|
/* Check for valid parse. */
|
|
if (*endp == '\0' && *format_name != '\0') {
|
|
|
|
if (format_id <= DICT_TF_FORMAT_MAX) {
|
|
|
|
return(format_id);
|
|
}
|
|
} else {
|
|
|
|
for (format_id = 0; format_id <= DICT_TF_FORMAT_MAX;
|
|
format_id++) {
|
|
const char* name;
|
|
|
|
name = trx_sys_file_format_id_to_name(format_id);
|
|
|
|
if (!innobase_strcasecmp(format_name, name)) {
|
|
|
|
return(format_id);
|
|
}
|
|
}
|
|
}
|
|
|
|
return(DICT_TF_FORMAT_MAX + 1);
|
|
}
|
|
|
|
/****************************************************************
|
|
Validate the file format check value, is it one of "on" or "off",
|
|
as a side effect it sets the srv_check_file_format_at_startup variable. */
|
|
static
|
|
bool
|
|
innobase_file_format_check_on_off(
|
|
/*==============================*/
|
|
/* out: true if config value one
|
|
of "on" or "off" */
|
|
const char* format_check) /* in: parameter value */
|
|
{
|
|
bool ret = true;
|
|
|
|
if (!innobase_strcasecmp(format_check, "off")) {
|
|
|
|
/* Set the value to disable checking. */
|
|
srv_check_file_format_at_startup = DICT_TF_FORMAT_MAX + 1;
|
|
|
|
} else if (!innobase_strcasecmp(format_check, "on")) {
|
|
|
|
/* Set the value to the lowest supported format. */
|
|
srv_check_file_format_at_startup = DICT_TF_FORMAT_51;
|
|
} else {
|
|
ret = FALSE;
|
|
}
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/****************************************************************
|
|
Validate the file format check config parameters, as a side effect it
|
|
sets the srv_check_file_format_at_startup variable. */
|
|
static
|
|
bool
|
|
innobase_file_format_check_validate(
|
|
/*================================*/
|
|
/* out: true if valid config value */
|
|
const char* format_check) /* in: parameter value */
|
|
{
|
|
uint format_id;
|
|
bool ret = true;
|
|
|
|
format_id = innobase_file_format_name_lookup(format_check);
|
|
|
|
if (format_id < DICT_TF_FORMAT_MAX + 1) {
|
|
srv_check_file_format_at_startup = format_id;
|
|
} else {
|
|
ret = false;
|
|
}
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/*****************************************************************
|
|
Check if it is a valid file format. This function is registered as
|
|
a callback with MySQL. */
|
|
static
|
|
int
|
|
innodb_file_format_name_validate(
|
|
/*=============================*/
|
|
/* out: 0 for valid file
|
|
format */
|
|
THD* thd, /* in: thread handle */
|
|
struct st_mysql_sys_var* var, /* in: pointer to system
|
|
variable */
|
|
void* save, /* out: immediate result
|
|
for update function */
|
|
struct st_mysql_value* value) /* in: incoming string */
|
|
{
|
|
const char* file_format_input;
|
|
char buff[STRING_BUFFER_USUAL_SIZE];
|
|
int len = sizeof(buff);
|
|
|
|
ut_a(save != NULL);
|
|
ut_a(value != NULL);
|
|
|
|
file_format_input = value->val_str(value, buff, &len);
|
|
|
|
if (file_format_input != NULL) {
|
|
uint format_id;
|
|
|
|
format_id = innobase_file_format_name_lookup(
|
|
file_format_input);
|
|
|
|
if (format_id <= DICT_TF_FORMAT_MAX) {
|
|
|
|
*(uint*) save = format_id;
|
|
return(0);
|
|
}
|
|
}
|
|
|
|
return(1);
|
|
}
|
|
|
|
/********************************************************************
|
|
Update the system variable innodb_file_format using the "saved"
|
|
value. This function is registered as a callback with MySQL. */
|
|
static
|
|
void
|
|
innodb_file_format_name_update(
|
|
/*===========================*/
|
|
THD* thd, /* in: thread handle */
|
|
struct st_mysql_sys_var* var, /* in: pointer to
|
|
system variable */
|
|
void* var_ptr, /* out: where the
|
|
formal string goes */
|
|
const void* save) /* in: immediate result
|
|
from check function */
|
|
{
|
|
ut_a(var_ptr != NULL);
|
|
ut_a(save != NULL);
|
|
ut_a((*(const uint*) save) <= DICT_TF_FORMAT_MAX);
|
|
|
|
srv_file_format = *(const uint*) save;
|
|
|
|
*(const char**) var_ptr
|
|
= trx_sys_file_format_id_to_name(srv_file_format);
|
|
}
|
|
|
|
/*****************************************************************
|
|
Check if valid argument to innodb_file_format_check. This
|
|
function is registered as a callback with MySQL. */
|
|
static
|
|
int
|
|
innodb_file_format_check_validate(
|
|
/*==============================*/
|
|
/* out: 0 for valid file
|
|
format */
|
|
THD* thd, /* in: thread handle */
|
|
struct st_mysql_sys_var* var, /* in: pointer to system
|
|
variable */
|
|
void* save, /* out: immediate result
|
|
for update function */
|
|
struct st_mysql_value* value) /* in: incoming string */
|
|
{
|
|
const char* file_format_input;
|
|
char buff[STRING_BUFFER_USUAL_SIZE];
|
|
int len = sizeof(buff);
|
|
|
|
ut_a(save != NULL);
|
|
ut_a(value != NULL);
|
|
|
|
file_format_input = value->val_str(value, buff, &len);
|
|
|
|
if (file_format_input != NULL) {
|
|
|
|
/* Check if user set on/off, we want to print a suitable
|
|
message if they did so. */
|
|
|
|
if (innobase_file_format_check_on_off(file_format_input)) {
|
|
sql_print_warning(
|
|
"InnoDB: invalid innodb_file_format_check "
|
|
"value; on/off can only be set at startup or "
|
|
"in the configuration file");
|
|
} else if (innobase_file_format_check_validate(
|
|
file_format_input)) {
|
|
|
|
uint format_id;
|
|
|
|
format_id = innobase_file_format_name_lookup(
|
|
file_format_input);
|
|
|
|
ut_a(format_id <= DICT_TF_FORMAT_MAX);
|
|
|
|
*(uint*) save = format_id;
|
|
|
|
return(0);
|
|
|
|
} else {
|
|
sql_print_warning(
|
|
"InnoDB: invalid innodb_file_format_check "
|
|
"value; can be any format up to %s "
|
|
"or its equivalent numeric id",
|
|
trx_sys_file_format_id_to_name(
|
|
DICT_TF_FORMAT_MAX));
|
|
}
|
|
}
|
|
|
|
return(1);
|
|
}
|
|
|
|
/********************************************************************
|
|
Update the system variable innodb_file_format_check using the "saved"
|
|
value. This function is registered as a callback with MySQL. */
|
|
static
|
|
void
|
|
innodb_file_format_check_update(
|
|
/*============================*/
|
|
THD* thd, /* in: thread handle */
|
|
struct st_mysql_sys_var* var, /* in: pointer to
|
|
system variable */
|
|
void* var_ptr, /* out: where the
|
|
formal string goes */
|
|
const void* save) /* in: immediate result
|
|
from check function */
|
|
{
|
|
uint format_id;
|
|
|
|
ut_a(save != NULL);
|
|
ut_a(var_ptr != NULL);
|
|
|
|
format_id = *(const uint*) save;
|
|
|
|
/* Update the max format id in the system tablespace. */
|
|
if (trx_sys_file_format_max_set(format_id, (const char**) var_ptr)) {
|
|
ut_print_timestamp(stderr);
|
|
fprintf(stderr,
|
|
" [Info] InnoDB: the file format in the system "
|
|
"tablespace is now set to %s.\n", *(char**) var_ptr);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************
|
|
Check if it is a valid value of innodb_change_buffering. This function is
|
|
registered as a callback with MySQL. */
|
|
static
|
|
int
|
|
innodb_change_buffering_validate(
|
|
/*=====================*/
|
|
/* out: 0 for valid
|
|
innodb_change_buffering */
|
|
THD* thd, /* in: thread handle */
|
|
struct st_mysql_sys_var* var, /* in: pointer to system
|
|
variable */
|
|
void* save, /* out: immediate result
|
|
for update function */
|
|
struct st_mysql_value* value) /* in: incoming string */
|
|
{
|
|
const char* change_buffering_input;
|
|
char buff[STRING_BUFFER_USUAL_SIZE];
|
|
int len = sizeof(buff);
|
|
|
|
ut_a(save != NULL);
|
|
ut_a(value != NULL);
|
|
|
|
change_buffering_input = value->val_str(value, buff, &len);
|
|
|
|
if (change_buffering_input != NULL) {
|
|
ulint use;
|
|
|
|
for (use = 0; use < UT_ARR_SIZE(innobase_change_buffering_values);
|
|
use++) {
|
|
if (!innobase_strcasecmp(
|
|
change_buffering_input,
|
|
innobase_change_buffering_values[use])) {
|
|
*(ibuf_use_t*) save = (ibuf_use_t) use;
|
|
return(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
return(1);
|
|
}
|
|
|
|
/********************************************************************
|
|
Update the system variable innodb_change_buffering using the "saved"
|
|
value. This function is registered as a callback with MySQL. */
|
|
static
|
|
void
|
|
innodb_change_buffering_update(
|
|
/*===================*/
|
|
THD* thd, /* in: thread handle */
|
|
struct st_mysql_sys_var* var, /* in: pointer to
|
|
system variable */
|
|
void* var_ptr, /* out: where the
|
|
formal string goes */
|
|
const void* save) /* in: immediate result
|
|
from check function */
|
|
{
|
|
ut_a(var_ptr != NULL);
|
|
ut_a(save != NULL);
|
|
ut_a((*(ibuf_use_t*) save) <= IBUF_USE_ALL);
|
|
|
|
ibuf_use = *(const ibuf_use_t*) save;
|
|
|
|
*(const char**) var_ptr = innobase_change_buffering_values[ibuf_use];
|
|
}
|
|
|
|
static int show_innodb_vars(THD *thd, SHOW_VAR *var, char *buff)
|
|
{
|
|
innodb_export_status();
|
|
var->type= SHOW_ARRAY;
|
|
var->value= (char *) &innodb_status_variables;
|
|
return 0;
|
|
}
|
|
|
|
static SHOW_VAR innodb_status_variables_export[]= {
|
|
{"Innodb", (char*) &show_innodb_vars, SHOW_FUNC},
|
|
{NullS, NullS, SHOW_LONG}
|
|
};
|
|
|
|
static struct st_mysql_storage_engine innobase_storage_engine=
|
|
{ MYSQL_HANDLERTON_INTERFACE_VERSION };
|
|
|
|
/* plugin options */
|
|
static MYSQL_SYSVAR_BOOL(checksums, innobase_use_checksums,
|
|
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
|
|
"Enable InnoDB checksums validation (enabled by default). "
|
|
"Disable with --skip-innodb-checksums.",
|
|
NULL, NULL, TRUE);
|
|
|
|
static MYSQL_SYSVAR_STR(data_home_dir, innobase_data_home_dir,
|
|
PLUGIN_VAR_READONLY,
|
|
"The common part for InnoDB table spaces.",
|
|
NULL, NULL, NULL);
|
|
|
|
static MYSQL_SYSVAR_BOOL(doublewrite, innobase_use_doublewrite,
|
|
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
|
|
"Enable InnoDB doublewrite buffer (enabled by default). "
|
|
"Disable with --skip-innodb-doublewrite.",
|
|
NULL, NULL, TRUE);
|
|
|
|
static MYSQL_SYSVAR_ULONG(fast_shutdown, innobase_fast_shutdown,
|
|
PLUGIN_VAR_OPCMDARG,
|
|
"Speeds up the shutdown process of the InnoDB storage engine. Possible "
|
|
"values are 0, 1 (faster)"
|
|
/*
|
|
NetWare can't close unclosed files, can't automatically kill remaining
|
|
threads, etc, so on this OS we disable the crash-like InnoDB shutdown.
|
|
*/
|
|
IF_NETWARE("", " or 2 (fastest - crash-like)")
|
|
".",
|
|
NULL, NULL, 1, 0, IF_NETWARE(1,2), 0);
|
|
|
|
static MYSQL_SYSVAR_BOOL(file_per_table, srv_file_per_table,
|
|
PLUGIN_VAR_NOCMDARG,
|
|
"Stores each InnoDB table to an .ibd file in the database dir.",
|
|
NULL, NULL, FALSE);
|
|
|
|
static MYSQL_SYSVAR_STR(file_format, innobase_file_format_name,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"File format to use for new tables in .ibd files.",
|
|
innodb_file_format_name_validate,
|
|
innodb_file_format_name_update, "Antelope");
|
|
|
|
static MYSQL_SYSVAR_STR(file_format_check, innobase_file_format_check,
|
|
PLUGIN_VAR_OPCMDARG,
|
|
"The highest file format in the tablespace.",
|
|
innodb_file_format_check_validate,
|
|
innodb_file_format_check_update,
|
|
"on");
|
|
|
|
static MYSQL_SYSVAR_ULONG(flush_log_at_trx_commit, srv_flush_log_at_trx_commit,
|
|
PLUGIN_VAR_OPCMDARG,
|
|
"Set to 0 (write and flush once per second),"
|
|
" 1 (write and flush at each commit)"
|
|
" or 2 (write at commit, flush once per second).",
|
|
NULL, NULL, 1, 0, 2, 0);
|
|
|
|
static MYSQL_SYSVAR_STR(flush_method, innobase_unix_file_flush_method,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"With which method to flush data.", NULL, NULL, NULL);
|
|
|
|
static MYSQL_SYSVAR_BOOL(locks_unsafe_for_binlog, innobase_locks_unsafe_for_binlog,
|
|
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
|
|
"Force InnoDB to not use next-key locking, to use only row-level locking.",
|
|
NULL, NULL, FALSE);
|
|
|
|
#ifdef UNIV_LOG_ARCHIVE
|
|
static MYSQL_SYSVAR_STR(log_arch_dir, innobase_log_arch_dir,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Where full logs should be archived.", NULL, NULL, NULL);
|
|
|
|
static MYSQL_SYSVAR_BOOL(log_archive, innobase_log_archive,
|
|
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
|
|
"Set to 1 if you want to have logs archived.", NULL, NULL, FALSE);
|
|
#endif /* UNIV_LOG_ARCHIVE */
|
|
|
|
static MYSQL_SYSVAR_STR(log_group_home_dir, innobase_log_group_home_dir,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Path to InnoDB log files.", NULL, NULL, NULL);
|
|
|
|
static MYSQL_SYSVAR_ULONG(max_dirty_pages_pct, srv_max_buf_pool_modified_pct,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Percentage of dirty pages allowed in bufferpool.",
|
|
NULL, NULL, 90, 0, 100, 0);
|
|
|
|
static MYSQL_SYSVAR_ULONG(max_purge_lag, srv_max_purge_lag,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Desired maximum length of the purge queue (0 = no limit)",
|
|
NULL, NULL, 0, 0, ~0L, 0);
|
|
|
|
static MYSQL_SYSVAR_BOOL(rollback_on_timeout, innobase_rollback_on_timeout,
|
|
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
|
|
"Roll back the complete transaction on lock wait timeout, for 4.x compatibility (disabled by default)",
|
|
NULL, NULL, FALSE);
|
|
|
|
static MYSQL_SYSVAR_BOOL(status_file, innobase_create_status_file,
|
|
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_NOSYSVAR,
|
|
"Enable SHOW INNODB STATUS output in the innodb_status.<pid> file",
|
|
NULL, NULL, FALSE);
|
|
|
|
static MYSQL_SYSVAR_BOOL(stats_on_metadata, innobase_stats_on_metadata,
|
|
PLUGIN_VAR_OPCMDARG,
|
|
"Enable statistics gathering for metadata commands such as SHOW TABLE STATUS (on by default)",
|
|
NULL, NULL, TRUE);
|
|
|
|
static MYSQL_SYSVAR_ULONGLONG(stats_sample_pages, srv_stats_sample_pages,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"The number of index pages to sample when calculating statistics (default 8)",
|
|
NULL, NULL, 8, 1, ~0ULL, 0);
|
|
|
|
static MYSQL_SYSVAR_BOOL(adaptive_hash_index, innobase_adaptive_hash_index,
|
|
PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
|
|
"Enable InnoDB adaptive hash index (enabled by default). "
|
|
"Disable with --skip-innodb-adaptive-hash-index.",
|
|
NULL, NULL, TRUE);
|
|
|
|
static MYSQL_SYSVAR_ULONG(replication_delay, srv_replication_delay,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Replication thread delay (ms) on the slave server if "
|
|
"innodb_thread_concurrency is reached (0 by default)",
|
|
NULL, NULL, 0, 0, ~0UL, 0);
|
|
|
|
static MYSQL_SYSVAR_LONG(additional_mem_pool_size, innobase_additional_mem_pool_size,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures.",
|
|
NULL, NULL, 1*1024*1024L, 512*1024L, LONG_MAX, 1024);
|
|
|
|
static MYSQL_SYSVAR_ULONG(autoextend_increment, srv_auto_extend_increment,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Data file autoextend increment in megabytes",
|
|
NULL, NULL, 8L, 1L, 1000L, 0);
|
|
|
|
static MYSQL_SYSVAR_LONGLONG(buffer_pool_size, innobase_buffer_pool_size,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"The size of the memory buffer InnoDB uses to cache data and indexes of its tables.",
|
|
NULL, NULL, 8*1024*1024L, 5*1024*1024L, LONGLONG_MAX, 1024*1024L);
|
|
|
|
static MYSQL_SYSVAR_ULONG(commit_concurrency, srv_commit_concurrency,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Helps in performance tuning in heavily concurrent environments.",
|
|
NULL, NULL, 0, 0, 1000, 0);
|
|
|
|
static MYSQL_SYSVAR_ULONG(concurrency_tickets, srv_n_free_tickets_to_enter,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Number of times a thread is allowed to enter InnoDB within the same SQL query after it has once got the ticket",
|
|
NULL, NULL, 500L, 1L, ~0L, 0);
|
|
|
|
static MYSQL_SYSVAR_LONG(file_io_threads, innobase_file_io_threads,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Number of file I/O threads in InnoDB.",
|
|
NULL, NULL, 4, 4, 64, 0);
|
|
|
|
static MYSQL_SYSVAR_LONG(force_recovery, innobase_force_recovery,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Helps to save your data in case the disk image of the database becomes corrupt.",
|
|
NULL, NULL, 0, 0, 6, 0);
|
|
|
|
static MYSQL_SYSVAR_LONG(log_buffer_size, innobase_log_buffer_size,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"The size of the buffer which InnoDB uses to write log to the log files on disk.",
|
|
NULL, NULL, 1024*1024L, 256*1024L, LONG_MAX, 1024);
|
|
|
|
static MYSQL_SYSVAR_LONGLONG(log_file_size, innobase_log_file_size,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Size of each log file in a log group.",
|
|
NULL, NULL, 5*1024*1024L, 1*1024*1024L, LONGLONG_MAX, 1024*1024L);
|
|
|
|
static MYSQL_SYSVAR_LONG(log_files_in_group, innobase_log_files_in_group,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Number of log files in the log group. InnoDB writes to the files in a circular fashion. Value 3 is recommended here.",
|
|
NULL, NULL, 2, 2, 100, 0);
|
|
|
|
static MYSQL_SYSVAR_LONG(mirrored_log_groups, innobase_mirrored_log_groups,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Number of identical copies of log groups we keep for the database. Currently this should be set to 1.",
|
|
NULL, NULL, 1, 1, 10, 0);
|
|
|
|
static MYSQL_SYSVAR_LONG(open_files, innobase_open_files,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"How many files at the maximum InnoDB keeps open at the same time.",
|
|
NULL, NULL, 300L, 10L, LONG_MAX, 0);
|
|
|
|
static MYSQL_SYSVAR_ULONG(sync_spin_loops, srv_n_spin_wait_rounds,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Count of spin-loop rounds in InnoDB mutexes",
|
|
NULL, NULL, 20L, 0L, ~0L, 0);
|
|
|
|
static MYSQL_SYSVAR_ULONG(thread_concurrency, srv_thread_concurrency,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Helps in performance tuning in heavily concurrent environments. Sets the maximum number of threads allowed inside InnoDB. Value 0 will disable the thread throttling.",
|
|
NULL, NULL, 8, 0, 1000, 0);
|
|
|
|
static MYSQL_SYSVAR_ULONG(thread_sleep_delay, srv_thread_sleep_delay,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0 disable a sleep",
|
|
NULL, NULL, 10000L, 0L, ~0L, 0);
|
|
|
|
static MYSQL_SYSVAR_STR(data_file_path, innobase_data_file_path,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"Path to individual files and their sizes.",
|
|
NULL, NULL, NULL);
|
|
|
|
static MYSQL_SYSVAR_LONG(autoinc_lock_mode, innobase_autoinc_lock_mode,
|
|
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
|
|
"The AUTOINC lock modes supported by InnoDB: "
|
|
"0 => Old style AUTOINC locking (for backward"
|
|
" compatibility) "
|
|
"1 => New style AUTOINC locking "
|
|
"2 => No AUTOINC locking (unsafe for SBR)",
|
|
NULL, NULL,
|
|
AUTOINC_NEW_STYLE_LOCKING, /* Default setting */
|
|
AUTOINC_OLD_STYLE_LOCKING, /* Minimum value */
|
|
AUTOINC_NO_LOCKING, 0); /* Maximum value */
|
|
|
|
static MYSQL_SYSVAR_STR(version, innodb_version_str,
|
|
PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_READONLY,
|
|
"InnoDB version", NULL, NULL, INNODB_VERSION_STR);
|
|
|
|
static MYSQL_SYSVAR_BOOL(use_sys_malloc, srv_use_sys_malloc,
|
|
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
|
|
"Use OS memory allocator instead of InnoDB's internal memory allocator",
|
|
NULL, NULL, FALSE);
|
|
|
|
static MYSQL_SYSVAR_BOOL(use_native_aio, srv_use_native_aio,
|
|
PLUGIN_VAR_NOCMDARG | PLUGIN_VAR_READONLY,
|
|
"Use native AIO if supported on this platform.",
|
|
NULL, NULL, TRUE);
|
|
|
|
static MYSQL_SYSVAR_STR(change_buffering, innobase_change_buffering,
|
|
PLUGIN_VAR_RQCMDARG,
|
|
"Buffer changes to reduce random access: "
|
|
"OFF, ON, inserting, deleting, changing, or purging.",
|
|
innodb_change_buffering_validate,
|
|
innodb_change_buffering_update, NULL);
|
|
|
|
static struct st_mysql_sys_var* innobase_system_variables[]= {
|
|
MYSQL_SYSVAR(additional_mem_pool_size),
|
|
MYSQL_SYSVAR(autoextend_increment),
|
|
MYSQL_SYSVAR(buffer_pool_size),
|
|
MYSQL_SYSVAR(checksums),
|
|
MYSQL_SYSVAR(commit_concurrency),
|
|
MYSQL_SYSVAR(concurrency_tickets),
|
|
MYSQL_SYSVAR(data_file_path),
|
|
MYSQL_SYSVAR(data_home_dir),
|
|
MYSQL_SYSVAR(doublewrite),
|
|
MYSQL_SYSVAR(fast_shutdown),
|
|
MYSQL_SYSVAR(file_io_threads),
|
|
MYSQL_SYSVAR(file_per_table),
|
|
MYSQL_SYSVAR(file_format),
|
|
MYSQL_SYSVAR(file_format_check),
|
|
MYSQL_SYSVAR(flush_log_at_trx_commit),
|
|
MYSQL_SYSVAR(flush_method),
|
|
MYSQL_SYSVAR(force_recovery),
|
|
MYSQL_SYSVAR(locks_unsafe_for_binlog),
|
|
MYSQL_SYSVAR(lock_wait_timeout),
|
|
#ifdef UNIV_LOG_ARCHIVE
|
|
MYSQL_SYSVAR(log_arch_dir),
|
|
MYSQL_SYSVAR(log_archive),
|
|
#endif /* UNIV_LOG_ARCHIVE */
|
|
MYSQL_SYSVAR(log_buffer_size),
|
|
MYSQL_SYSVAR(log_file_size),
|
|
MYSQL_SYSVAR(log_files_in_group),
|
|
MYSQL_SYSVAR(log_group_home_dir),
|
|
MYSQL_SYSVAR(max_dirty_pages_pct),
|
|
MYSQL_SYSVAR(max_purge_lag),
|
|
MYSQL_SYSVAR(mirrored_log_groups),
|
|
MYSQL_SYSVAR(open_files),
|
|
MYSQL_SYSVAR(rollback_on_timeout),
|
|
MYSQL_SYSVAR(stats_on_metadata),
|
|
MYSQL_SYSVAR(stats_sample_pages),
|
|
MYSQL_SYSVAR(adaptive_hash_index),
|
|
MYSQL_SYSVAR(replication_delay),
|
|
MYSQL_SYSVAR(status_file),
|
|
MYSQL_SYSVAR(strict_mode),
|
|
MYSQL_SYSVAR(support_xa),
|
|
MYSQL_SYSVAR(sync_spin_loops),
|
|
MYSQL_SYSVAR(table_locks),
|
|
MYSQL_SYSVAR(thread_concurrency),
|
|
MYSQL_SYSVAR(thread_sleep_delay),
|
|
MYSQL_SYSVAR(autoinc_lock_mode),
|
|
MYSQL_SYSVAR(version),
|
|
MYSQL_SYSVAR(use_sys_malloc),
|
|
MYSQL_SYSVAR(use_native_aio),
|
|
MYSQL_SYSVAR(change_buffering),
|
|
NULL
|
|
};
|
|
|
|
#ifdef MYSQL_DYNAMIC_PLUGIN
|
|
struct st_mysql_sys_var
|
|
{
|
|
MYSQL_PLUGIN_VAR_HEADER;
|
|
void* value;
|
|
};
|
|
|
|
struct param_mapping
|
|
{
|
|
const char* server; /* Parameter name in the server. */
|
|
const char* plugin; /* Paramater name in the plugin. */
|
|
};
|
|
|
|
/********************************************************************
|
|
Match the parameters from the static and dynamic versions. */
|
|
static
|
|
bool
|
|
innobase_match_parameter(
|
|
/*=====================*/
|
|
/* out: true if names match */
|
|
const char* from_server, /* in: variable name from server */
|
|
const char* from_plugin) /* in: variable name from plugin */
|
|
{
|
|
static const param_mapping param_map[] = {
|
|
{"use_adaptive_hash_indexes", "adaptive_hash_index"}
|
|
};
|
|
|
|
if (strcmp(from_server, from_plugin) == 0) {
|
|
return(true);
|
|
}
|
|
|
|
const param_mapping* param = param_map;
|
|
int n_elems = sizeof(param_map) / sizeof(param_map[0]);
|
|
|
|
for (int i = 0; i < n_elems; ++i, ++param) {
|
|
|
|
if (strcmp(param->server, from_server) == 0
|
|
&& strcmp(param->plugin, from_plugin) == 0) {
|
|
|
|
return(true);
|
|
}
|
|
}
|
|
|
|
return(false);
|
|
}
|
|
|
|
/********************************************************************
|
|
Copy InnoDB system variables from the static InnoDB to the dynamic
|
|
plugin. */
|
|
static
|
|
bool
|
|
innodb_plugin_init(void)
|
|
/*====================*/
|
|
/* out: TRUE if the dynamic InnoDB plugin should start */
|
|
{
|
|
#if !MYSQL_STORAGE_ENGINE_PLUGIN
|
|
#error "MYSQL_STORAGE_ENGINE_PLUGIN must be nonzero."
|
|
#endif
|
|
|
|
/* Copy the system variables. */
|
|
|
|
struct st_mysql_plugin* builtin;
|
|
struct st_mysql_sys_var** sta; /* static parameters */
|
|
struct st_mysql_sys_var** dyn; /* dynamic parameters */
|
|
|
|
#ifdef __WIN__
|
|
if (!builtin_innobase_plugin_ptr) {
|
|
|
|
return(true);
|
|
}
|
|
|
|
builtin = builtin_innobase_plugin_ptr;
|
|
#else
|
|
switch (builtin_innobase_plugin) {
|
|
case 0:
|
|
return(true);
|
|
case MYSQL_STORAGE_ENGINE_PLUGIN:
|
|
break;
|
|
default:
|
|
return(false);
|
|
}
|
|
|
|
builtin = (struct st_mysql_plugin*) &builtin_innobase_plugin;
|
|
#endif
|
|
|
|
for (sta = builtin->system_vars; *sta != NULL; sta++) {
|
|
|
|
for (dyn = innobase_system_variables; *dyn != NULL; dyn++) {
|
|
|
|
/* do not copy session variables */
|
|
if (((*sta)->flags | (*dyn)->flags)
|
|
& PLUGIN_VAR_THDLOCAL) {
|
|
continue;
|
|
}
|
|
|
|
if (innobase_match_parameter((*sta)->name,
|
|
(*dyn)->name)) {
|
|
|
|
/* found the corresponding parameter */
|
|
|
|
/* check if the flags are the same,
|
|
ignoring differences in the READONLY or
|
|
NOSYSVAR flags;
|
|
e.g. we are not copying string variable to
|
|
an integer one, but we do not care if it is
|
|
readonly in the static and not in the
|
|
dynamic */
|
|
if (((*sta)->flags ^ (*dyn)->flags)
|
|
& ~(PLUGIN_VAR_READONLY
|
|
| PLUGIN_VAR_NOSYSVAR)) {
|
|
|
|
fprintf(stderr,
|
|
"InnoDB: %s in static InnoDB "
|
|
"(flags=0x%x) differs from "
|
|
"%s in dynamic InnoDB "
|
|
"(flags=0x%x)\n",
|
|
(*sta)->name, (*sta)->flags,
|
|
(*dyn)->name, (*dyn)->flags);
|
|
|
|
/* we could break; here leaving this
|
|
parameter uncopied */
|
|
return(false);
|
|
}
|
|
|
|
/* assign the value of the static parameter
|
|
to the dynamic one, according to their type */
|
|
|
|
#define COPY_VAR(label, type) \
|
|
case label: \
|
|
*(type*)(*dyn)->value = *(type*)(*sta)->value; \
|
|
break;
|
|
|
|
switch ((*sta)->flags
|
|
& ~(PLUGIN_VAR_MASK
|
|
| PLUGIN_VAR_UNSIGNED)) {
|
|
|
|
COPY_VAR(PLUGIN_VAR_BOOL, char);
|
|
COPY_VAR(PLUGIN_VAR_INT, int);
|
|
COPY_VAR(PLUGIN_VAR_LONG, long);
|
|
COPY_VAR(PLUGIN_VAR_LONGLONG, long long);
|
|
COPY_VAR(PLUGIN_VAR_STR, char*);
|
|
|
|
default:
|
|
fprintf(stderr,
|
|
"InnoDB: unknown flags "
|
|
"0x%x for %s\n",
|
|
(*sta)->flags, (*sta)->name);
|
|
}
|
|
|
|
/* Make the static InnoDB variable point to
|
|
the dynamic one */
|
|
(*sta)->value = (*dyn)->value;
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return(true);
|
|
}
|
|
#endif /* MYSQL_DYNAMIC_PLUGIN */
|
|
|
|
mysql_declare_plugin(innobase)
|
|
{
|
|
MYSQL_STORAGE_ENGINE_PLUGIN,
|
|
&innobase_storage_engine,
|
|
innobase_hton_name,
|
|
"Innobase Oy",
|
|
"Supports transactions, row-level locking, and foreign keys",
|
|
PLUGIN_LICENSE_GPL,
|
|
innobase_init, /* Plugin Init */
|
|
NULL, /* Plugin Deinit */
|
|
INNODB_VERSION_SHORT,
|
|
innodb_status_variables_export,/* status variables */
|
|
innobase_system_variables, /* system variables */
|
|
NULL /* reserved */
|
|
},
|
|
i_s_innodb_trx,
|
|
i_s_innodb_locks,
|
|
i_s_innodb_lock_waits,
|
|
i_s_innodb_cmp,
|
|
i_s_innodb_cmp_reset,
|
|
i_s_innodb_cmpmem,
|
|
i_s_innodb_cmpmem_reset
|
|
mysql_declare_plugin_end;
|
|
|
|
#ifdef UNIV_COMPILE_TEST_FUNCS
|
|
|
|
typedef struct innobase_convert_name_test_struct {
|
|
char* buf;
|
|
ulint buflen;
|
|
const char* id;
|
|
ulint idlen;
|
|
void* thd;
|
|
ibool file_id;
|
|
|
|
const char* expected;
|
|
} innobase_convert_name_test_t;
|
|
|
|
void
|
|
test_innobase_convert_name()
|
|
{
|
|
char buf[1024];
|
|
ulint i;
|
|
|
|
innobase_convert_name_test_t test_input[] = {
|
|
{buf, sizeof(buf), "abcd", 4, NULL, TRUE, "\"abcd\""},
|
|
{buf, 7, "abcd", 4, NULL, TRUE, "\"abcd\""},
|
|
{buf, 6, "abcd", 4, NULL, TRUE, "\"abcd\""},
|
|
{buf, 5, "abcd", 4, NULL, TRUE, "\"abc\""},
|
|
{buf, 4, "abcd", 4, NULL, TRUE, "\"ab\""},
|
|
|
|
{buf, sizeof(buf), "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""},
|
|
{buf, 9, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""},
|
|
{buf, 8, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""},
|
|
{buf, 7, "ab@0060cd", 9, NULL, TRUE, "\"ab`cd\""},
|
|
{buf, 6, "ab@0060cd", 9, NULL, TRUE, "\"ab`c\""},
|
|
{buf, 5, "ab@0060cd", 9, NULL, TRUE, "\"ab`\""},
|
|
{buf, 4, "ab@0060cd", 9, NULL, TRUE, "\"ab\""},
|
|
|
|
{buf, sizeof(buf), "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50#ab\"\"cd\""},
|
|
{buf, 17, "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50#ab\"\"cd\""},
|
|
{buf, 16, "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50#ab\"\"c\""},
|
|
{buf, 15, "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50#ab\"\"\""},
|
|
{buf, 14, "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50#ab\""},
|
|
{buf, 13, "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50#ab\""},
|
|
{buf, 12, "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50#a\""},
|
|
{buf, 11, "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50#\""},
|
|
{buf, 10, "ab\"cd", 5, NULL, TRUE,
|
|
"\"#mysql50\""},
|
|
|
|
{buf, sizeof(buf), "ab/cd", 5, NULL, TRUE, "\"ab\".\"cd\""},
|
|
{buf, 9, "ab/cd", 5, NULL, TRUE, "\"ab\".\"cd\""},
|
|
{buf, 8, "ab/cd", 5, NULL, TRUE, "\"ab\".\"c\""},
|
|
{buf, 7, "ab/cd", 5, NULL, TRUE, "\"ab\".\"\""},
|
|
{buf, 6, "ab/cd", 5, NULL, TRUE, "\"ab\"."},
|
|
{buf, 5, "ab/cd", 5, NULL, TRUE, "\"ab\"."},
|
|
{buf, 4, "ab/cd", 5, NULL, TRUE, "\"ab\""},
|
|
{buf, 3, "ab/cd", 5, NULL, TRUE, "\"a\""},
|
|
{buf, 2, "ab/cd", 5, NULL, TRUE, "\"\""},
|
|
/* XXX probably "" is a better result in this case
|
|
{buf, 1, "ab/cd", 5, NULL, TRUE, "."},
|
|
*/
|
|
{buf, 0, "ab/cd", 5, NULL, TRUE, ""},
|
|
};
|
|
|
|
for (i = 0; i < sizeof(test_input) / sizeof(test_input[0]); i++) {
|
|
|
|
char* end;
|
|
ibool ok = TRUE;
|
|
size_t res_len;
|
|
|
|
fprintf(stderr, "TESTING %lu, %s, %lu, %s\n",
|
|
test_input[i].buflen,
|
|
test_input[i].id,
|
|
test_input[i].idlen,
|
|
test_input[i].expected);
|
|
|
|
end = innobase_convert_name(
|
|
test_input[i].buf,
|
|
test_input[i].buflen,
|
|
test_input[i].id,
|
|
test_input[i].idlen,
|
|
test_input[i].thd,
|
|
test_input[i].file_id);
|
|
|
|
res_len = (size_t) (end - test_input[i].buf);
|
|
|
|
if (res_len != strlen(test_input[i].expected)) {
|
|
|
|
fprintf(stderr, "unexpected len of the result: %u, "
|
|
"expected: %u\n", (unsigned) res_len,
|
|
(unsigned) strlen(test_input[i].expected));
|
|
ok = FALSE;
|
|
}
|
|
|
|
if (memcmp(test_input[i].buf,
|
|
test_input[i].expected,
|
|
strlen(test_input[i].expected)) != 0
|
|
|| !ok) {
|
|
|
|
fprintf(stderr, "unexpected result: %.*s, "
|
|
"expected: %s\n", (int) res_len,
|
|
test_input[i].buf,
|
|
test_input[i].expected);
|
|
ok = FALSE;
|
|
}
|
|
|
|
if (ok) {
|
|
fprintf(stderr, "OK: res: %.*s\n\n", (int) res_len,
|
|
buf);
|
|
} else {
|
|
fprintf(stderr, "FAILED\n\n");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif /* UNIV_COMPILE_TEST_FUNCS */
|