#include "sql/sql_base.h"
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <atomic>
#include <functional>
#include <memory>
#include <unordered_map>
#include <utility>
#include "ft_global.h"
#include "libbinlogevents/include/table_id.h"
#include "m_ctype.h"
#include "m_string.h"
#include "map_helpers.h"
#include "mf_wcomp.h"
#include "mutex_lock.h"
#include "my_alloc.h"
#include "my_bitmap.h"
#include "my_byteorder.h"
#include "my_compiler.h"
#include "my_dbug.h"
#include "my_dir.h"
#include "my_io.h"
#include "my_loglevel.h"
#include "my_macros.h"
#include "my_psi_config.h"
#include "my_sqlcommand.h"
#include "my_sys.h"
#include "my_systime.h"
#include "my_table_map.h"
#include "my_thread_local.h"
#include "mysql/components/services/bits/mysql_cond_bits.h"
#include "mysql/components/services/bits/psi_bits.h"
#include "mysql/components/services/bits/psi_cond_bits.h"
#include "mysql/components/services/bits/psi_mutex_bits.h"
#include "mysql/components/services/log_builtins.h"
#include "mysql/plugin.h"
#include "mysql/psi/mysql_cond.h"
#include "mysql/psi/mysql_file.h"
#include "mysql/psi/mysql_mutex.h"
#include "mysql/psi/mysql_statement.h"
#include "mysql/psi/mysql_table.h"
#include "mysql/psi/mysql_thread.h"
#include "mysql/psi/psi_table.h"
#include "mysql/service_mysql_alloc.h"
#include "mysql/thread_type.h"
#include "mysql_com.h"
#include "mysqld_error.h"
#include "sql/auth/auth_acls.h"
#include "sql/auth/auth_common.h"
#include "sql/auth/sql_security_ctx.h"
#include "sql/binlog.h"
#include "sql/check_stack.h"
#include "sql/dd/cache/dictionary_client.h"
#include "sql/dd/dd_schema.h"
#include "sql/dd/dd_table.h"
#include "sql/dd/dd_tablespace.h"
#include "sql/dd/string_type.h"
#include "sql/dd/types/abstract_table.h"
#include "sql/dd/types/column.h"
#include "sql/dd/types/column_statistics.h"
#include "sql/dd/types/foreign_key.h"
#include "sql/dd/types/function.h"
#include "sql/dd/types/procedure.h"
#include "sql/dd/types/schema.h"
#include "sql/dd/types/table.h"
#include "sql/dd/types/view.h"
#include "sql/dd_table_share.h"
#include "sql/debug_sync.h"
#include "sql/derror.h"
#include "sql/error_handler.h"
#include "sql/field.h"
#include "sql/handler.h"
#include "sql/histograms/histogram.h"
#include "sql/item.h"
#include "sql/item_cmpfunc.h"
#include "sql/item_func.h"
#include "sql/item_subselect.h"
#include "sql/lock.h"
#include "sql/log.h"
#include "sql/log_event.h"
#include "sql/mysqld.h"
#include "sql/mysqld_thd_manager.h"
#include "sql/nested_join.h"
#include "sql/partition_info.h"
#include "sql/psi_memory_key.h"
#include "sql/query_options.h"
#include "sql/rpl_gtid.h"
#include "sql/rpl_handler.h"
#include "sql/rpl_replica_commit_order_manager.h"
#include "sql/rpl_rli.h"
#include "sql/session_tracker.h"
#include "sql/sp.h"
#include "sql/sp_cache.h"
#include "sql/sp_head.h"
#include "sql/sql_audit.h"
#include "sql/sql_backup_lock.h"
#include "sql/sql_class.h"
#include "sql/sql_const.h"
#include "sql/sql_data_change.h"
#include "sql/sql_db.h"
#include "sql/sql_error.h"
#include "sql/sql_executor.h"
#include "sql/sql_handler.h"
#include "sql/sql_lex.h"
#include "sql/sql_list.h"
#include "sql/sql_parse.h"
#include "sql/sql_prepare.h"
#include "sql/sql_select.h"
#include "sql/sql_show.h"
#include "sql/sql_sort.h"
#include "sql/sql_table.h"
#include "sql/sql_update.h"
#include "sql/sql_view.h"
#include "sql/strfunc.h"
#include "sql/system_variables.h"
#include "sql/table.h"
#include "sql/table_cache.h"
#include "sql/table_trigger_dispatcher.h"
#include "sql/thd_raii.h"
#include "sql/transaction.h"
#include "sql/transaction_info.h"
#include "sql/trigger_chain.h"
#include "sql/xa.h"
#include "sql_string.h"
#include "template_utils.h"
#include "thr_mutex.h"

Classes
class	Repair_mrg_table_error_handler
	This internal handler is used to trap ER_NO_SUCH_TABLE and ER_WRONG_MRG_TABLE errors during CHECK/REPAIR TABLE for MERGE tables. More...

class	MDL_deadlock_handler
	An error handler which converts, if possible, ER_LOCK_DEADLOCK error that can occur when we are trying to acquire a metadata lock to a request for back-off and re-start of open_tables() process. More...

class	Fix_row_type_error_handler
	Error handler class for suppressing HA_ERR_ROW_FORMAT_CHANGED errors from SE. More...

class	MDL_deadlock_discovery_repair_handler
	An error handler to mark transaction to rollback on DEADLOCK error during DISCOVER / REPAIR. More...

struct	anonymous_namespace{sql_base.cc}::schema_hash

struct	anonymous_namespace{sql_base.cc}::schema_key_equal

class	Tables_in_user_order_iterator
	This is an iterator which emits leaf Table_ref nodes in an order suitable for expansion of 'table_name. More...

Namespaces
namespace	anonymous_namespace{sql_base.cc}

Macros
#define	WRONG_GRANT (Field *)-1

Typedefs
using	Table_definition_cache = malloc_unordered_map< std::string, std::unique_ptr< TABLE_SHARE, Table_share_deleter > >

Functions
static void	init_tdc_psi_keys (void)
	Initialize performance schema instrumentation points used by the table cache. More...

static bool	check_and_update_table_version (THD thd, Table_ref tables, TABLE_SHARE *table_share)
	Compare metadata versions of an element obtained from the table definition cache and its corresponding node in the parse tree. More...

static bool	open_table_entry_fini (THD thd, TABLE_SHARE share, const dd::Table table, TABLE entry)
	Finalize the process of TABLE creation by loading table triggers and taking action if a HEAP table content was emptied implicitly. More...

static bool	auto_repair_table (THD thd, Table_ref table_list)
	Auxiliary routine which is used for performing automatic table repair. More...

static TABLE *	find_temporary_table (THD thd, const char table_key, size_t table_key_length)
	Find a temporary table specified by a key in the THD::temporary_tables list. More...

static bool	tdc_open_view (THD thd, Table_ref table_list, const char *cache_key, size_t cache_key_length)
	Open view by getting its definition from disk (and table cache in future). More...

static bool	add_view_place_holder (THD thd, Table_ref table_list)
	Add a dummy LEX object for a view. More...

static size_t	create_table_def_key (const char db_name, const char table_name, char *key)
	Create a table cache/table definition cache key for a table. More...

static size_t	create_table_def_key_tmp (const THD thd, const char db_name, const char table_name, char key)
	Create a table cache/table definition cache key for a temporary table. More...

static std::string	create_table_def_key_secondary (const char db_name, const char table_name)
	Create a table cache/table definition cache key for a table in a secondary storage engine. More...

size_t	get_table_def_key (const Table_ref table_list, const char *key)
	Get table cache key for a table list element. More...

bool	table_def_init (void)

void	table_def_start_shutdown (void)
	Notify table definition cache that process of shutting down server has started so it has to keep number of TABLE and TABLE_SHARE objects minimal in order to reduce number of references to pluggable engines. More...

void	table_def_free (void)

uint	cached_table_definitions (void)

static TABLE_SHARE *	process_found_table_share (THD thd, TABLE_SHARE share, bool open_view)

static bool	read_histograms (THD thd, TABLE_SHARE share, const dd::Schema schema, const dd::Abstract_table table_def)
	Read any existing histogram statistics from the data dictionary and store a copy of them in the TABLE_SHARE. More...

static void	update_schema_options (const dd::Schema sch_obj, TABLE_SHARE share)
	Update TABLE_SHARE with options from dd::Schema object. More...

TABLE_SHARE *	get_table_share (THD thd, const char db, const char table_name, const char key, size_t key_length, bool open_view, bool open_secondary)
	Get the TABLE_SHARE for a table. More...

static TABLE_SHARE *	get_table_share_with_discover (THD thd, Table_ref table_list, const char key, size_t key_length, bool open_secondary, int error)
	Get a table share. More...

void	release_table_share (TABLE_SHARE *share)
	Mark that we are not using table share anymore. More...

TABLE_SHARE *	get_cached_table_share (const char db, const char table_name)
	Get an existing table definition from the table definition cache. More...

OPEN_TABLE_LIST *	list_open_tables (THD thd, const char db, const char *wild)

void	intern_close_table (TABLE *table)

void	free_io_cache (TABLE *table)

bool	close_cached_tables (THD thd, Table_ref tables, bool wait_for_refresh, ulong timeout)

static void	mark_temp_tables_as_free_for_reuse (THD *thd)
	Mark all temporary tables which were used by the current statement or substatement as free for reuse, but only if the query_id can be cleared. More...

void	mark_tmp_table_for_reuse (TABLE *table)
	Reset a single temporary table. More...

static void	mark_used_tables_as_free_for_reuse (THD thd, TABLE table)

static void	close_open_tables (THD *thd)
	Auxiliary function to close all tables in the open_tables list. More...

static void	close_all_tables_for_name (THD thd, const char key, size_t key_length, const char db, const char table_name, bool remove_from_locked_tables, TABLE *skip_table)
	Close all open instances of the table but keep the MDL lock. More...

void	close_all_tables_for_name (THD thd, TABLE_SHARE share, bool remove_from_locked_tables, TABLE *skip_table)
	Close all open instances of the table but keep the MDL lock. More...

void	close_all_tables_for_name (THD thd, const char db, const char *table_name, bool remove_from_locked_tables)
	Close all open instances of the table but keep the MDL lock. More...

static bool	in_LTM (THD *thd)

static bool	belongs_to_dd_table (const Table_ref *tl)
	Check if the given Table_ref belongs to a DD table. More...

void	close_thread_tables (THD *thd)
	Close all tables used by the current substatement, or all tables used by this thread if we are on the outer-most level. More...

static void	release_or_close_table (THD thd, TABLE table)
	Helper function which returns TABLE to Table Cache or closes if table is marked as needing re-open. More...

void	close_thread_table (THD thd, TABLE *table_ptr)

static uint	tmpkeyval (TABLE *table)

bool	close_temporary_tables (THD *thd)

Table_ref *	find_table_in_global_list (Table_ref table, const char db_name, const char *table_name)
	Find table in global list. More...

static Table_ref *	find_dup_table (const Table_ref table, Table_ref table_list, bool check_alias)
	Test that table is unique (It's only exists once in the table list) More...

Table_ref *	unique_table (const Table_ref table, Table_ref table_list, bool check_alias)
	Test that the subject table of INSERT/UPDATE/DELETE/CREATE or (in case of MyISAMMRG) one of its children are not used later in the query. More...

void	update_non_unique_table_error (Table_ref update, const char operation, Table_ref *duplicate)
	Issue correct error message in case we found 2 duplicate tables which prevent some update operation. More...

TABLE *	find_temporary_table (THD thd, const char db, const char *table_name)
	Find temporary table specified by database and table names in the THD::temporary_tables list. More...

TABLE *	find_temporary_table (THD thd, const Table_ref tl)
	Find a temporary table specified by Table_ref instance in the THD::temporary_tables list. More...

void	drop_temporary_table (THD thd, Table_ref table_list)
	Drop a temporary table. More...

void	close_temporary_table (THD thd, TABLE table, bool free_share, bool delete_table)

void	close_temporary (THD thd, TABLE table, bool free_share, bool delete_table)

bool	rename_temporary_table (THD thd, TABLE table, const char db, const char table_name)

bool	wait_while_table_is_used (THD thd, TABLE table, enum ha_extra_function function)
	Force all other threads to stop using the table by upgrading metadata lock on it and remove unused TABLE instances from cache. More...

static bool	check_if_table_exists (THD thd, Table_ref table, bool *exists)
	Check that table exists in data-dictionary or in some storage engine. More...

static bool	open_table_get_mdl_lock (THD thd, Open_table_context ot_ctx, Table_ref table_list, uint flags, MDL_ticket *mdl_ticket)
	Try to acquire an MDL lock for a table being opened. More...

static bool	tdc_wait_for_old_version (THD thd, const char db, const char *table_name, ulong wait_timeout, uint deadlock_weight)
	Check if table's share is being removed from the table definition cache and, if yes, wait until the flush is complete. More...

bool	open_table (THD thd, Table_ref table_list, Open_table_context *ot_ctx)
	Open a base table. More...

TABLE *	find_locked_table (TABLE list, const char db, const char *table_name)
	Find table in the list of open tables. More...

TABLE *	find_table_for_mdl_upgrade (THD thd, const char db, const char *table_name, bool no_error)
	Find instance of TABLE with upgradable or exclusive metadata lock from the list of open tables, emit error if no such table found. More...

void	assign_new_table_id (TABLE_SHARE *share)

static bool	check_and_update_routine_version (THD thd, Sroutine_hash_entry rt, sp_head *sp)
	Compares versions of a stored routine obtained from the sp cache and the version used at prepare. More...

static bool	fix_row_type (THD thd, Table_ref table_list)
	Auxiliary routine for automatically updating row format for the table. More...

thr_lock_type	read_lock_type_for_table (THD thd, Query_tables_list prelocking_ctx, Table_ref *table_list, bool routine_modifies_data)

static void	process_table_fks (THD thd, Query_tables_list prelocking_ctx, TABLE_SHARE share, bool is_insert, bool is_update, bool is_delete, Table_ref belong_to_view, bool *need_prelocking)
	Process table's foreign keys (if any) by prelocking algorithm. More...

static bool	open_and_process_routine (THD thd, Query_tables_list prelocking_ctx, Sroutine_hash_entry rt, Prelocking_strategy prelocking_strategy, bool has_prelocking_list, Open_table_context ot_ctx, bool need_prelocking, bool *routine_modifies_data)
	Handle element of prelocking set other than table. More...

static bool	open_and_process_table (THD thd, LEX lex, Table_ref const tables, uint counter, Prelocking_strategy prelocking_strategy, bool has_prelocking_list, Open_table_context ot_ctx)
	Handle table list element by obtaining metadata lock, opening table or view and, if prelocking strategy prescribes so, extending the prelocking set with tables and routines used by it. More...

int	run_before_dml_hook (THD *thd)
	Run the server hook called "before_dml". More...

static bool	is_temporary_table_being_opened (const Table_ref *table)
	Check whether a table being opened is a temporary table. More...

bool	get_and_lock_tablespace_names (THD thd, Table_ref tables_start, Table_ref *tables_end, ulong lock_wait_timeout, uint flags)
	Acquire IX metadata locks on tablespace names used by LOCK TABLES or by a DDL statement. More...

bool	lock_table_names (THD thd, Table_ref tables_start, Table_ref tables_end, ulong lock_wait_timeout, uint flags, Prealloced_array< MDL_request , 1 > *schema_reqs)
	Acquire "strong" (SRO, SNW, SNRW) metadata locks on tables used by LOCK TABLES or by a DDL statement. More...

static bool	open_tables_check_upgradable_mdl (THD thd, Table_ref tables_start, Table_ref *tables_end)
	Check for upgradable (SNW, SNRW) metadata locks on tables to be opened for a DDL statement. More...

static bool	acquire_backup_lock_in_lock_tables_mode (THD thd, Table_ref tables_start, Table_ref *tables_end)
	Iterate along a list of tables and acquire BACKUP LOCK in shared mode in case a strong MDL request (DDL/LOCK TABLES-type) was specified for a table. More...

static bool	set_non_locking_read_for_IS_view (THD thd, Table_ref tl)
	Check if this is a DD table used under a I_S view then request InnoDB to do non-locking reads on the table. More...

bool	is_acl_table_in_non_LTM (const Table_ref *tl, enum enum_locked_tables_mode ltm)
	Check if given Table_ref is a acl table and is being read and not in LOCK TABLE mode. More...

static bool	set_non_locking_read_for_ACL_table (THD thd, Table_ref tl, const bool &issue_warning)
	Check if this is a ACL table is requested for read and then request InnoDB to do non-locking reads on the table. More...

bool	open_tables (THD thd, Table_ref start, uint counter, uint flags, Prelocking_strategy *prelocking_strategy)
	Open all tables in list. More...

static bool	check_lock_and_start_stmt (THD thd, Query_tables_list prelocking_ctx, Table_ref *table_list)
	Check that lock is ok for tables; Call start stmt if ok. More...

TABLE *	open_n_lock_single_table (THD thd, Table_ref table_l, thr_lock_type lock_type, uint flags, Prelocking_strategy *prelocking_strategy)
	Open and lock one table. More...

TABLE *	open_ltable (THD thd, Table_ref table_list, thr_lock_type lock_type, uint lock_flags)

bool	open_and_lock_tables (THD thd, Table_ref tables, uint flags, Prelocking_strategy *prelocking_strategy)
	Open all tables in list, locks them and optionally process derived tables. More...

static bool	open_secondary_engine_tables (THD *thd, uint flags)
	Check if a secondary engine can be used to execute the current statement, and if so, replace the opened tables with their secondary counterparts. More...

bool	open_tables_for_query (THD thd, Table_ref tables, uint flags)
	Open all tables for a query or statement, in list started by "tables". More...

static void	mark_real_tables_as_free_for_reuse (Table_ref *table_list)

bool	lock_tables (THD thd, Table_ref tables, uint count, uint flags)
	Lock all tables in a list. More...

bool	lock_dictionary_tables (THD thd, Table_ref tables, uint count, uint flags)
	Simplified version of lock_tables() call to be used for locking data-dictionary tables when reading or storing data-dictionary objects. More...

void	close_tables_for_reopen (THD thd, Table_ref *tables, const MDL_savepoint &start_of_statement_svp)
	Prepare statement for reopening of tables and recalculation of set of prelocked tables. More...

TABLE *	open_table_uncached (THD thd, const char path, const char db, const char table_name, bool add_to_temporary_tables_list, bool open_in_engine, const dd::Table &table_def)
	Open a single table without table caching and don't add it to THD::open_tables. More...

bool	rm_temporary_table (THD thd, handlerton base, const char path, const dd::Table table_def)
	Delete a temporary table. More...

bool	open_temporary_table (THD thd, Table_ref tl)
	Find a temporary table specified by Table_ref instance in the cache and prepare its TABLE instance for use. More...

bool	open_temporary_tables (THD thd, Table_ref tl_list)
	Pre-open temporary tables corresponding to table list elements. More...

static Field *	find_field_in_view (THD thd, Table_ref table_list, const char name, Item *ref, bool register_tree_change)

static Field *	find_field_in_natural_join (THD thd, Table_ref table_ref, const char name, Item ref, bool register_tree_change, Table_ref *actual_table)
	Find field by name in a NATURAL/USING join table reference. More...

Field *	find_field_in_table (TABLE table, const char name, bool allow_rowid, uint *field_index_ptr)
	Find field by name in a base table. More...

Field *	find_field_in_table_ref (THD thd, Table_ref table_list, const char name, size_t length, const char item_name, const char db_name, const char table_name, Item *ref, Access_bitmask want_privilege, bool allow_rowid, uint field_index_ptr, bool register_tree_change, Table_ref **actual_table)
	Find field in a table reference. More...

Field *	find_field_in_table_sef (TABLE table, const char name)

Field *	find_field_in_tables (THD thd, Item_ident item, Table_ref first_table, Table_ref last_table, Item **ref, find_item_error_report_type report_error, Access_bitmask want_privilege, bool register_tree_change)

bool	find_item_in_list (THD thd, Item find, mem_root_deque< Item * > items, Item *found, uint counter, enum_resolution_type *resolution)
	Find Item in list of items (find_field_in_tables analog) More...

static bool	test_if_string_in_list (const char find, List< String > str_list)

static bool	set_new_item_local_context (THD thd, Item_ident item, Table_ref *table_ref)

static bool	mark_common_columns (THD thd, Table_ref table_ref_1, Table_ref table_ref_2, List< String > using_fields, uint *found_using_fields)

static bool	store_natural_using_join_columns (THD thd, Table_ref natural_using_join, Table_ref table_ref_1, Table_ref table_ref_2, List< String > *using_fields, uint found_using_fields)

static bool	store_top_level_join_columns (THD thd, Table_ref table_ref, Table_ref left_neighbor, Table_ref right_neighbor)

bool	setup_natural_join_row_types (THD thd, mem_root_deque< Table_ref > from_clause, Name_resolution_context context)

bool	resolve_var_assignments (THD thd, LEX lex)
	Resolve variable assignments from LEX object. More...

bool	setup_fields (THD thd, Access_bitmask want_privilege, bool allow_sum_func, bool split_sum_funcs, bool column_update, const mem_root_deque< Item > typed_items, mem_root_deque< Item > *fields, Ref_item_array ref_item_array)
	Resolve a list of expressions and setup appropriate data. More...

bool	insert_fields (THD thd, Query_block query_block, const char db_name, const char table_name, mem_root_deque< Item * > fields, mem_root_deque< Item >::iterator *it, bool any_privileges)

bool	fill_record (THD thd, TABLE table, const mem_root_deque< Item * > &fields, const mem_root_deque< Item * > &values, MY_BITMAP bitmap, MY_BITMAP insert_into_fields_bitmap, bool raise_autoinc_has_expl_non_null_val)
	Fill fields with given items. More...

static bool	check_record (THD thd, const mem_root_deque< Item > &fields)
	Check the NOT NULL constraint on all the fields of the current record. More...

bool	check_record (THD thd, Field *ptr)
	Check the NOT NULL constraint on all the fields of the current record. More...

static bool	check_inserting_record (THD thd, Field *ptr)
	Check the NOT NULL constraint on all the fields explicitly set in INSERT INTO statement or implicitly set in BEFORE trigger. More...

bool	invoke_table_check_constraints (THD thd, const TABLE table)
	Invoke check constraints defined on the table. More...

static bool	command_can_invoke_insert_triggers (enum enum_trigger_event_type event, enum_sql_command sql_command)
	Check if SQL-statement is INSERT/INSERT SELECT/REPLACE/REPLACE SELECT and trigger event is ON INSERT. More...

bool	call_before_insert_triggers (THD thd, TABLE table, enum enum_trigger_event_type event, MY_BITMAP *insert_into_fields_bitmap)
	Execute BEFORE INSERT trigger. More...

bool	fill_record_n_invoke_before_triggers (THD thd, COPY_INFO optype_info, const mem_root_deque< Item * > &fields, const mem_root_deque< Item * > &values, TABLE table, enum enum_trigger_event_type event, int num_fields, bool raise_autoinc_has_expl_non_null_val, bool is_row_changed)
	Fill fields in list with values from the list of items and invoke before triggers. More...

bool	fill_record (THD thd, TABLE table, Field *ptr, const mem_root_deque< Item > &values, MY_BITMAP bitmap, MY_BITMAP insert_into_fields_bitmap, bool raise_autoinc_has_expl_non_null_val)
	Fill field buffer with values from Field list. More...

bool	fill_record_n_invoke_before_triggers (THD thd, Field ptr, const mem_root_deque< Item > &values, TABLE *table, enum enum_trigger_event_type event, int num_fields)
	Fill fields in array with values from the list of items and invoke before triggers. More...

bool	mysql_rm_tmp_tables (void)
	Drop all temporary tables which have been left from previous server run. More...

void	tdc_flush_unused_tables ()

void	tdc_remove_table (THD thd, enum_tdc_remove_table_type remove_type, const char db, const char *table_name, bool has_lock)
	Remove all or some (depending on parameter) instances of TABLE and TABLE_SHARE from the table definition cache. More...

int	setup_ftfuncs (const THD thd, Query_block query_block)

bool	init_ftfuncs (THD thd, Query_block query_block)

bool	open_trans_system_tables_for_read (THD thd, Table_ref table_list)
	Open and lock transactional system tables for read. More...

void	close_trans_system_tables (THD *thd)
	Close transactional system tables, opened with open_trans_system_tables_for_read(). More...

void	close_mysql_tables (THD *thd)
	A helper function to close a mysql. More...

TABLE *	open_log_table (THD thd, Table_ref one_table, Open_tables_backup *backup)
	Open a log table. More...

void	close_log_table (THD thd, Open_tables_backup backup)
	Close a log table. More...

Variables
static constexpr const size_t	MAX_DBKEY_LENGTH {NAME_LEN * 2 + 1 + 1 + 4 + 4}
	The maximum length of a key in the table definition cache. More...

static constexpr long	STACK_MIN_SIZE_FOR_OPEN {1024 * 80}

mysql_mutex_t	LOCK_open
	LOCK_open protects the following variables/objects: More...

mysql_cond_t	COND_open
	COND_open synchronizes concurrent opening of the same share: More...

static PSI_mutex_key	key_LOCK_open

static PSI_cond_key	key_COND_open

static PSI_mutex_info	all_tdc_mutexes []

static PSI_cond_info	all_tdc_conds []

Table_definition_cache *	table_def_cache

static TABLE_SHARE *	oldest_unused_share

static TABLE_SHARE	end_of_unused_share

static bool	table_def_shutdown_in_progress = false

static Table_id	last_table_id

Field *	not_found_field = (Field *)0x1

Field *	view_ref_found = (Field *)0x2

Variable Documentation

◆ MAX_DBKEY_LENGTH

constexpr const size_t MAX_DBKEY_LENGTH {NAME_LEN * 2 + 1 + 1 + 4 + 4}

staticconstexpr

The maximum length of a key in the table definition cache.

The key consists of the schema name, a '\0' character, the table name and a '\0' character. Hence NAME_LEN * 2 + 1 + 1.

Additionally, the key can be suffixed with either 4 + 4 extra bytes for slave tmp tables, or with a single extra byte for tables in a secondary storage engine. Add 4 + 4 to account for either of these suffixes.

◆ STACK_MIN_SIZE_FOR_OPEN

constexpr long STACK_MIN_SIZE_FOR_OPEN {1024 * 80}

staticconstexpr

Classes

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Functions

Variables

Variable Documentation

◆ MAX_DBKEY_LENGTH

◆ STACK_MIN_SIZE_FOR_OPEN