PSI_engine_data_lock_inspector Class Reference

Engine interface, row lock inspector. More...

#include <psi_data_lock.h>

Inheritance diagram for PSI_engine_data_lock_inspector:

Public Member Functions
	PSI_engine_data_lock_inspector ()=default
virtual	~PSI_engine_data_lock_inspector ()=default
virtual PSI_engine_data_lock_iterator *	create_data_lock_iterator ()=0
	Create a data lock iterator. More...
virtual PSI_engine_data_lock_wait_iterator *	create_data_lock_wait_iterator ()=0
	Create a data lock wait iterator. More...
virtual void	destroy_data_lock_iterator (PSI_engine_data_lock_iterator *it)=0
	Destroy a data lock iterator. More...
virtual void	destroy_data_lock_wait_iterator (PSI_engine_data_lock_wait_iterator *it)=0
	Destroy a data lock wait iterator. More...

Detailed Description

Engine interface, row lock inspector.

This is the interface exposed

• by a storage engine
• to the server to create an iterator over all row locks. The storage engine is to implement this interface. The server is to call create_iterator() to ask the engine to create an iterator over all row locks. A PSI_engine_data_lock_inspector is meant to be stateless, and not associated to any opened table handle, while the iterator created is meant to be stateful, and dedicated to an opened performance_schema.row_locks table handle.

Constructor & Destructor Documentation

PSI_engine_data_lock_inspector()

PSI_engine_data_lock_inspector::PSI_engine_data_lock_inspector ( )

default

~PSI_engine_data_lock_inspector()

virtual PSI_engine_data_lock_inspector::~PSI_engine_data_lock_inspector ( )

virtualdefault

Member Function Documentation

create_data_lock_iterator()

virtual PSI_engine_data_lock_iterator * PSI_engine_data_lock_inspector::create_data_lock_iterator ( )

pure virtual

Create a data lock iterator.

The iterator returned is used to extract data_locks rows from the storage engine.

See also

destroy_data_lock_iterator

Implemented in Innodb_data_lock_inspector.

create_data_lock_wait_iterator()

virtual PSI_engine_data_lock_wait_iterator * PSI_engine_data_lock_inspector::create_data_lock_wait_iterator ( )

pure virtual

Create a data lock wait iterator.

The iterator returned is used to extract data_lock_waits rows from the storage engine.

See also

destroy_data_lock_wait_iterator

Implemented in Innodb_data_lock_inspector.

destroy_data_lock_iterator()

virtual void PSI_engine_data_lock_inspector::destroy_data_lock_iterator ( PSI_engine_data_lock_iterator *  it )

pure virtual

Destroy a data lock iterator.

Implemented in Innodb_data_lock_inspector.

destroy_data_lock_wait_iterator()

virtual void PSI_engine_data_lock_inspector::destroy_data_lock_wait_iterator ( PSI_engine_data_lock_wait_iterator *  it )

pure virtual

Destroy a data lock wait iterator.

Implemented in Innodb_data_lock_inspector.

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

• include/mysql/psi/psi_data_lock.h