Class implementing buf_pool->LRU hazard pointer. More...

#include <buf0buf.h>

Inheritance diagram for LRUHp:

Public Member Functions
	LRUHp (const buf_pool_t buf_pool, const ib_mutex_t mutex)
	Constructor. More...

	~LRUHp () override=default
	Destructor. More...

void	adjust (const buf_page_t *bpage) override
	Adjust the value of hp. More...

Public Member Functions inherited from HazardPointer
	HazardPointer (const buf_pool_t buf_pool, const ib_mutex_t mutex)
	Constructor. More...

virtual	~HazardPointer ()=default
	Destructor. More...

buf_page_t *	get () const
	Get current value. More...

void	set (buf_page_t *bpage)
	Set current value. More...

bool	is_hp (const buf_page_t *bpage)
	Checks if a bpage is the hp. More...

void	move (const buf_page_t bpage, buf_page_t dpage)
	Adjust the value of hp for moving. More...

Additional Inherited Members
Protected Member Functions inherited from HazardPointer
	HazardPointer (const HazardPointer &)
	Disable copying. More...

HazardPointer &	operator= (const HazardPointer &)

Protected Attributes inherited from HazardPointer
const buf_pool_t *	m_buf_pool
	Buffer pool instance. More...

const ib_mutex_t *	m_mutex
	mutex that protects access to the m_hp. More...

buf_page_t *	m_hp
	hazard pointer. More...

Detailed Description

Class implementing buf_pool->LRU hazard pointer.

Constructor & Destructor Documentation

inline

Constructor.

Parameters

buf_pool	buffer pool instance
mutex	mutex that is protecting the hp.

LRUHp::~LRUHp ( )

overridedefault

Destructor.

void LRUHp::adjust ( const buf_page_t * bpage )

overridevirtual

Adjust the value of hp.

This happens when some other thread working on the same list attempts to remove the hp from the list.

Parameters

bpage buffer block to be compared

We only support reverse traversal for now.

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