A RAII helper which latches the mutex protecting given shard during constructor, and unlatches it during destruction. More...

#include <lock0guards.h>

Inheritance diagram for locksys::Shard_naked_latch_guard:

[legend]

Public Member Functions
	Shard_naked_latch_guard (ut::Location location, const table_id_t &table_id)

	Shard_naked_latch_guard (ut::Location location, const page_id_t &page_id)

	~Shard_naked_latch_guard ()

Private Member Functions
	Shard_naked_latch_guard (ut::Location location, Lock_mutex &shard_mutex)

Private Member Functions inherited from ut::Non_copyable
	Non_copyable (const Non_copyable &)=delete

Non_copyable &	operator= (const Non_copyable &)=delete

	Non_copyable ()=default

	~Non_copyable ()=default

Private Attributes
Lock_mutex &	m_shard_mutex
	The mutex protecting the shard requested in constructor. More...

Detailed Description

A RAII helper which latches the mutex protecting given shard during constructor, and unlatches it during destruction.

You quite probably don't want to use this class, which only takes a shard's latch, without acquiring global_latch - which gives no protection from threads which latch only the global_latch exclusively to prevent any activity. You should use it in combination with Global_shared_latch_guard, so that you first obtain an s-latch on the global_latch, or simply use the Shard_latch_guard class which already combines the two for you.

Constructor & Destructor Documentation

◆ Shard_naked_latch_guard() [1/3]

locksys::Shard_naked_latch_guard::Shard_naked_latch_guard	(	ut::Location	location,
		Lock_mutex &	shard_mutex
	)

explicitprivate

◆ Shard_naked_latch_guard() [2/3]

locksys::Shard_naked_latch_guard::Shard_naked_latch_guard	(	ut::Location	location,
		const table_id_t &	table_id
	)

explicit

◆ Shard_naked_latch_guard() [3/3]

locksys::Shard_naked_latch_guard::Shard_naked_latch_guard	(	ut::Location	location,
		const page_id_t &	page_id
	)

explicit

◆ ~Shard_naked_latch_guard()

locksys::Shard_naked_latch_guard::~Shard_naked_latch_guard ( )

Member Data Documentation

◆ m_shard_mutex

Lock_mutex& locksys::Shard_naked_latch_guard::m_shard_mutex

private

The mutex protecting the shard requested in constructor.

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

storage/innobase/include/lock0guards.h
storage/innobase/lock/lock0guards.cc

Public Member Functions

Private Member Functions

Private Attributes