Context information for each level. More...

#include <btr0mtib.h>

Public Member Functions
	Level_ctx (dict_index_t index, size_t level, Btree_load btree_load)
	Constructor. More...

	~Level_ctx ()
	Destructor. More...

dberr_t	init ()
	Initialize. More...

bool	is_leaf () const
	Check if this is leaf level. More...

Page_load *	create_page_load ()

void	free_page_load ()
	Free the current page load. More...

dberr_t	alloc_page_num (page_no_t &page_no)
	Allocate a page number. More...

dberr_t	alloc_extent ()
	Allocate one extent in the relevant file segment. More...

buf_block_t *	alloc (const page_no_t new_page_no) noexcept
	Allocate private memory buffer (BUF_BLOCK_MEMORY) block for given page number. More...

void	set_current_page_load (Page_load *sibling)

Page_load *	get_page_load () const

trx_id_t	get_trx_id () const

void	build_extent_cache ()
	Build the extent cache. More...

bool	load_extent_from_cache ()
	Load one extent from extent cache. More...

void	build_page_cache ()
	Build page loader cache for current exent. More...

Page_load *	get_page_load_from_cache ()
	Get a free page loader from cache. More...

bool	is_page_tracked (const page_no_t &page_no) const

Static Public Member Functions
static Level_ctx *	create (dict_index_t index, size_t level, Btree_load btree_load)
	Static member function construct a Level_ctx object. More...

static void	destroy (Level_ctx *obj)
	Static member function to destroy a Level_ctx object. More...

Public Attributes
Page_extent *	m_page_extent {}
	The current extent that is being loaded. More...

std::vector< Page_extent * >	m_cached_extents
	Pre allocated extents to prevent repeated allocation and free. More...

page_no_t	m_first_page {FIL_NULL}
	The page_no of the first page in this level. More...

page_no_t	m_last_page {FIL_NULL}
	The page_no of the last page in this level. More...

dict_index_t *	m_index {}
	The index which is being built. More...

const size_t	m_level {}
	The B-tree level whose context information is stored in this obj. More...

Page_load *	m_page_load {}
	The Page_load of the current page being loaded. More...

Btree_load *	m_btree_load
	A back pointer to conceptually higher level btree load object. More...

size_t	m_stat_n_pages {}
	Number of pages allocated at this level. More...

size_t	m_stat_n_extents {}
	Number of extents allocated at this level. More...

bool	m_extent_full {true}
	True if the current extent is full. More...

std::vector< page_no_t >	m_pages_allocated

Detailed Description

Context information for each level.

Constructor & Destructor Documentation

◆ Level_ctx()

Btree_multi::Level_ctx::Level_ctx	(	dict_index_t *	index,
		size_t	level,
		Btree_load *	btree_load
	)

inline

Constructor.

Parameters

[in]	index	dictionary index object.
[in]	level	the B-tree level of this context object.
[in]	btree_load	a back pointer to the Btree_load object to which this Level_ctx object is a part of.

◆ ~Level_ctx()

Btree_multi::Level_ctx::~Level_ctx ( )

Destructor.

Member Function Documentation

◆ alloc()

buf_block_t * Btree_multi::Level_ctx::alloc ( const page_no_t new_page_no )

noexcept

Allocate private memory buffer (BUF_BLOCK_MEMORY) block for given page number.

◆ alloc_extent()

dberr_t Btree_multi::Level_ctx::alloc_extent ( )

Allocate one extent in the relevant file segment.

No associated buffer blocks are allocated.

Returns: DB_SUCCESS on success, error code on failure.

◆ alloc_page_num()

dberr_t Btree_multi::Level_ctx::alloc_page_num ( page_no_t & page_no )

Allocate a page number.

Subsequently a Page_load will be created with the allocated page number.

Parameters

[out] page_no page number that was allocated.

Returns: DB_SUCCESS on success, error code on failure.

◆ build_extent_cache()

void Btree_multi::Level_ctx::build_extent_cache ( )

Build the extent cache.

◆ build_page_cache()

void Btree_multi::Level_ctx::build_page_cache ( )

Build page loader cache for current exent.

◆ create()

Level_ctx * Btree_multi::Level_ctx::create	(	dict_index_t *	index,
		size_t	level,
		Btree_load *	btree_load
	)

static

Static member function construct a Level_ctx object.

Parameters

[in]	index	dictionary index object.
[in]	level	the B-tree level of this context object.
[in]	btree_load	a back pointer to the Btree_load object to which this Level_ctx object is a part of.

Returns: level context object on success, nullptr on error.

◆ create_page_load()

Page_load * Btree_multi::Level_ctx::create_page_load ( )

◆ destroy()

void Btree_multi::Level_ctx::destroy ( Level_ctx * obj )

static

Static member function to destroy a Level_ctx object.

Parameters

[in] obj the Level_ctx object to destroy.

◆ free_page_load()

void Btree_multi::Level_ctx::free_page_load ( )

Free the current page load.

◆ get_page_load()

Page_load * Btree_multi::Level_ctx::get_page_load ( ) const

inline

◆ get_page_load_from_cache()

Page_load * Btree_multi::Level_ctx::get_page_load_from_cache ( )

Get a free page loader from cache.

Returns: page loader or nullptr if not found.

◆ get_trx_id()

trx_id_t Btree_multi::Level_ctx::get_trx_id ( ) const

inline

◆ init()

dberr_t Btree_multi::Level_ctx::init ( void )

Initialize.

Returns: DB_SUCCESS on success, an error code on failure.

◆ is_leaf()

bool Btree_multi::Level_ctx::is_leaf ( ) const

inline

Check if this is leaf level.

Returns: true if this is leaf level, false otherwise.

◆ is_page_tracked()

bool Btree_multi::Level_ctx::is_page_tracked ( const page_no_t & page_no ) const

◆ load_extent_from_cache()

bool Btree_multi::Level_ctx::load_extent_from_cache ( )

Load one extent from extent cache.

Returns: true iff successful.

◆ set_current_page_load()

void Btree_multi::Level_ctx::set_current_page_load ( Page_load * sibling )

inline

Member Data Documentation

◆ m_btree_load

Btree_load* Btree_multi::Level_ctx::m_btree_load

A back pointer to conceptually higher level btree load object.

◆ m_cached_extents

std::vector<Page_extent *> Btree_multi::Level_ctx::m_cached_extents

Pre allocated extents to prevent repeated allocation and free.

◆ m_extent_full

bool Btree_multi::Level_ctx::m_extent_full {true}

True if the current extent is full.

◆ m_first_page

page_no_t Btree_multi::Level_ctx::m_first_page {FIL_NULL}

The page_no of the first page in this level.

◆ m_index

dict_index_t* Btree_multi::Level_ctx::m_index {}

The index which is being built.

◆ m_last_page

page_no_t Btree_multi::Level_ctx::m_last_page {FIL_NULL}

The page_no of the last page in this level.

◆ m_level

const size_t Btree_multi::Level_ctx::m_level {}

The B-tree level whose context information is stored in this obj.

◆ m_page_extent

Page_extent* Btree_multi::Level_ctx::m_page_extent {}

The current extent that is being loaded.

◆ m_page_load

Page_load* Btree_multi::Level_ctx::m_page_load {}

The Page_load of the current page being loaded.

◆ m_pages_allocated

std::vector<page_no_t> Btree_multi::Level_ctx::m_pages_allocated

◆ m_stat_n_extents

size_t Btree_multi::Level_ctx::m_stat_n_extents {}

Number of extents allocated at this level.

◆ m_stat_n_pages

size_t Btree_multi::Level_ctx::m_stat_n_pages {}

Number of pages allocated at this level.

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

storage/innobase/include/btr0mtib.h
storage/innobase/btr/btr0mtib.cc

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Level_ctx()

◆ ~Level_ctx()

Member Function Documentation

◆ alloc()

◆ alloc_extent()

◆ alloc_page_num()

◆ build_extent_cache()

◆ build_page_cache()

◆ create()

◆ create_page_load()

◆ destroy()

◆ free_page_load()

◆ get_page_load()

◆ get_page_load_from_cache()

◆ get_trx_id()

◆ init()

◆ is_leaf()

◆ is_page_tracked()

◆ load_extent_from_cache()

◆ set_current_page_load()

Member Data Documentation

◆ m_btree_load

◆ m_cached_extents

◆ m_extent_full

◆ m_first_page

◆ m_index

◆ m_last_page

◆ m_level

◆ m_page_extent

◆ m_page_load

◆ m_pages_allocated

◆ m_stat_n_extents

◆ m_stat_n_pages