Helper class providing overloaded functions asserting that we have proper MDL locks in place. More...

Static Public Member Functions
static bool	is_release_locked (THD , const dd::Entity_object )

static bool	is_read_locked (THD thd, const dd::Abstract_table table)

static bool	is_write_locked (THD thd, const dd::Abstract_table table)

static bool	is_read_locked (THD thd, const dd::Spatial_reference_system srs)

static bool	is_write_locked (THD thd, const dd::Spatial_reference_system srs)

static bool	is_release_locked (THD thd, const dd::Spatial_reference_system srs)

static bool	is_read_locked (THD thd, const dd::Column_statistics column_statistics)

static bool	is_write_locked (THD thd, const dd::Column_statistics column_statistics)

static bool	is_release_locked (THD thd, const dd::Column_statistics column_statistics)

static bool	is_read_locked (THD , const dd::Charset )

static bool	is_write_locked (THD , const dd::Charset )

static bool	is_read_locked (THD , const dd::Collation )

static bool	is_write_locked (THD , const dd::Collation )

static bool	is_read_locked (THD thd, const dd::Schema schema)

static bool	is_write_locked (THD thd, const dd::Schema schema)

static bool	is_release_locked (THD thd, const dd::Schema schema)

static bool	is_read_locked (THD thd, const dd::Tablespace tablespace)

static bool	is_write_locked (THD thd, const dd::Tablespace tablespace)

static bool	is_release_locked (THD thd, const dd::Tablespace tablespace)

static bool	is_read_locked (THD thd, const dd::Event event)

static bool	is_write_locked (THD thd, const dd::Event event)

static bool	is_read_locked (THD thd, const dd::Routine routine)

static bool	is_write_locked (THD thd, const dd::Routine routine)

static bool	is_locked (THD thd, const dd::Resource_group resource_group, enum_mdl_type lock_type)
	Private helper function for asserting MDL for resource groups. More...

static bool	is_read_locked (THD thd, const dd::Resource_group resource_group)
	Check whether a resource group object holds at least MDL_INTENTION_EXCLUSIVE. More...

static bool	is_write_locked (THD thd, const dd::Resource_group resource_group)
	Check if MDL_EXCLUSIVE lock is held by DD Resource group object. More...

Static Private Member Functions
static bool	is_locked (THD thd, const dd::Abstract_table table, enum_mdl_type lock_type)
	Private helper function for asserting MDL for tables. More...

static bool	is_locked (THD thd, const dd::Event event, enum_mdl_type lock_type)
	Private helper function for asserting MDL for events. More...

static bool	is_locked (THD thd, const dd::Routine routine, enum_mdl_type lock_type)
	Private helper function for asserting MDL for routines. More...

static bool	is_locked (THD thd, const dd::Schema schema, enum_mdl_type lock_type)
	Private helper function for asserting MDL for schemata. More...

static bool	is_locked (THD thd, const dd::Spatial_reference_system srs, enum_mdl_type lock_type)
	Private helper function for asserting MDL for spatial reference systems. More...

static bool	is_locked (THD thd, const dd::Column_statistics column_statistics, enum_mdl_type lock_type)
	Private helper function for asserting MDL for column statistics. More...

static bool	is_locked (THD thd, const dd::Tablespace tablespace, enum_mdl_type lock_type)
	Private helper function for asserting MDL for tablespaces. More...

Detailed Description

Helper class providing overloaded functions asserting that we have proper MDL locks in place.

Please note that the functions cannot be called until after we have the name of the object, so if we acquire an object by id, the asserts must be delayed until the object is retrieved.

Note: Checking for MDL locks is disabled for the DD initialization thread because the server is not multi threaded at this stage.

Member Function Documentation

◆ is_locked() [1/8]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_locked	(	THD *	thd,
		const dd::Abstract_table *	table,
		enum_mdl_type	lock_type
	)

inlinestaticprivate

Private helper function for asserting MDL for tables.

Note: We need to retrieve the schema name, since this is required for the MDL key.

Parameters

thd	Thread context.
table	Table object.
lock_type	Weakest lock type accepted.

Returns: true if we have the required lock, otherwise false.

◆ is_locked() [2/8]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_locked	(	THD *	thd,
		const dd::Column_statistics *	column_statistics,
		enum_mdl_type	lock_type
	)

inlinestaticprivate

Private helper function for asserting MDL for column statistics.

Parameters

thd	Thread context.
column_statistics	Column statistic object.
lock_type	Weakest lock type accepted.

Returns: true if we have the required lock, otherwise false.

◆ is_locked() [3/8]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_locked	(	THD *	thd,
		const dd::Event *	event,
		enum_mdl_type	lock_type
	)

inlinestaticprivate

Private helper function for asserting MDL for events.

Note: We need to retrieve the schema name, since this is required for the MDL key.

Parameters

thd	Thread context.
event	Event object.
lock_type	Weakest lock type accepted.

Returns: true if we have the required lock, otherwise false.

◆ is_locked() [4/8]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_locked	(	THD *	thd,
		const dd::Resource_group *	resource_group,
		enum_mdl_type	lock_type
	)

inlinestatic

Private helper function for asserting MDL for resource groups.

Parameters

thd	THD context.
resource_group	DD Resource group object.
lock_type	Weakest lock type accepted.

Returns: true if we have the required lock, otherwise false.

◆ is_locked() [5/8]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_locked	(	THD *	thd,
		const dd::Routine *	routine,
		enum_mdl_type	lock_type
	)

inlinestaticprivate

Private helper function for asserting MDL for routines.

Note: We need to retrieve the schema name, since this is required for the MDL key.

Parameters

thd	Thread context.
routine	Routine object.
lock_type	Weakest lock type accepted.

Returns: true if we have the required lock, otherwise false.

◆ is_locked() [6/8]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_locked	(	THD *	thd,
		const dd::Schema *	schema,
		enum_mdl_type	lock_type
	)

inlinestaticprivate

Private helper function for asserting MDL for schemata.

Parameters

thd	Thread context.
schema	Schema object.
lock_type	Weakest lock type accepted.

Returns: true if we have the required lock, otherwise false.

◆ is_locked() [7/8]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_locked	(	THD *	thd,
		const dd::Spatial_reference_system *	srs,
		enum_mdl_type	lock_type
	)

inlinestaticprivate

Private helper function for asserting MDL for spatial reference systems.

Parameters

thd	Thread context.
srs	Spatial reference system object.
lock_type	Weakest lock type accepted.

Returns: true if we have the required lock, otherwise false.

◆ is_locked() [8/8]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_locked	(	THD *	thd,
		const dd::Tablespace *	tablespace,
		enum_mdl_type	lock_type
	)

inlinestaticprivate

Private helper function for asserting MDL for tablespaces.

Note: We need to retrieve the schema name, since this is required for the MDL key.

Parameters

thd	Thread context.
tablespace	Tablespace object.
lock_type	Weakest lock type accepted.

Returns: true if we have the required lock, otherwise false.

◆ is_read_locked() [1/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	,
		const dd::Charset *
	)

inlinestatic

◆ is_read_locked() [2/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	,
		const dd::Collation *
	)

inlinestatic

◆ is_read_locked() [3/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	thd,
		const dd::Abstract_table *	table
	)

inlinestatic

◆ is_read_locked() [4/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	thd,
		const dd::Column_statistics *	column_statistics
	)

inlinestatic

◆ is_read_locked() [5/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	thd,
		const dd::Event *	event
	)

inlinestatic

◆ is_read_locked() [6/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	thd,
		const dd::Resource_group *	resource_group
	)

inlinestatic

Check whether a resource group object holds at least MDL_INTENTION_EXCLUSIVE.

IX is acquired when a resource group is being accessed when creating/altering a resource group.

Parameters

thd	THD context.
resource_group	Pointer to DD resource group object.

Returns: true if required lock is held else false

◆ is_read_locked() [7/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	thd,
		const dd::Routine *	routine
	)

inlinestatic

◆ is_read_locked() [8/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	thd,
		const dd::Schema *	schema
	)

inlinestatic

◆ is_read_locked() [9/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	thd,
		const dd::Spatial_reference_system *	srs
	)

inlinestatic

◆ is_read_locked() [10/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_read_locked	(	THD *	thd,
		const dd::Tablespace *	tablespace
	)

inlinestatic

◆ is_release_locked() [1/5]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_release_locked	(	THD *	,
		const dd::Entity_object *
	)

inlinestatic

◆ is_release_locked() [2/5]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_release_locked	(	THD *	thd,
		const dd::Column_statistics *	column_statistics
	)

inlinestatic

◆ is_release_locked() [3/5]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_release_locked	(	THD *	thd,
		const dd::Schema *	schema
	)

inlinestatic

◆ is_release_locked() [4/5]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_release_locked	(	THD *	thd,
		const dd::Spatial_reference_system *	srs
	)

inlinestatic

◆ is_release_locked() [5/5]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_release_locked	(	THD *	thd,
		const dd::Tablespace *	tablespace
	)

inlinestatic

◆ is_write_locked() [1/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	,
		const dd::Charset *
	)

inlinestatic

◆ is_write_locked() [2/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	,
		const dd::Collation *
	)

inlinestatic

◆ is_write_locked() [3/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	thd,
		const dd::Abstract_table *	table
	)

inlinestatic

◆ is_write_locked() [4/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	thd,
		const dd::Column_statistics *	column_statistics
	)

inlinestatic

◆ is_write_locked() [5/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	thd,
		const dd::Event *	event
	)

inlinestatic

◆ is_write_locked() [6/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	thd,
		const dd::Resource_group *	resource_group
	)

inlinestatic

Check if MDL_EXCLUSIVE lock is held by DD Resource group object.

Writing a resource group object should be governed by MDL_EXCLUSIVE.

Parameters

thd	THD context
resource_group	Pointer to DD resource group object.

Returns: true if required lock is held else false.

◆ is_write_locked() [7/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	thd,
		const dd::Routine *	routine
	)

inlinestatic

◆ is_write_locked() [8/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	thd,
		const dd::Schema *	schema
	)

inlinestatic

◆ is_write_locked() [9/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	thd,
		const dd::Spatial_reference_system *	srs
	)

inlinestatic

◆ is_write_locked() [10/10]

static bool anonymous_namespace{dictionary_client.cc}::MDL_checker::is_write_locked	(	THD *	thd,
		const dd::Tablespace *	tablespace
	)

inlinestatic

The documentation for this class was generated from the following file:

sql/dd/impl/cache/dictionary_client.cc

Static Public Member Functions

Static Private Member Functions

Detailed Description

Member Function Documentation

◆ is_locked() [1/8]

◆ is_locked() [2/8]

◆ is_locked() [3/8]

◆ is_locked() [4/8]

◆ is_locked() [5/8]

◆ is_locked() [6/8]

◆ is_locked() [7/8]

◆ is_locked() [8/8]

◆ is_read_locked() [1/10]

◆ is_read_locked() [2/10]

◆ is_read_locked() [3/10]

◆ is_read_locked() [4/10]

◆ is_read_locked() [5/10]

◆ is_read_locked() [6/10]

◆ is_read_locked() [7/10]

◆ is_read_locked() [8/10]

◆ is_read_locked() [9/10]

◆ is_read_locked() [10/10]

◆ is_release_locked() [1/5]

◆ is_release_locked() [2/5]

◆ is_release_locked() [3/5]

◆ is_release_locked() [4/5]

◆ is_release_locked() [5/5]

◆ is_write_locked() [1/10]

◆ is_write_locked() [2/10]

◆ is_write_locked() [3/10]

◆ is_write_locked() [4/10]

◆ is_write_locked() [5/10]

◆ is_write_locked() [6/10]

◆ is_write_locked() [7/10]

◆ is_write_locked() [8/10]

◆ is_write_locked() [9/10]

◆ is_write_locked() [10/10]