Parsed_index_lru_cache Class Reference

Parsed index cache for redo parsing. More...

#include <log0parsed_index_lru_cache.h>

Classes
struct	Index_deleter

Public Types
using	sequence = std::basic_string< byte >
using	sequence_view = std::basic_string_view< byte >

Public Member Functions
	Parsed_index_lru_cache ()
	Parsed_index_lru_cache (const Parsed_index_lru_cache &)=delete
Parsed_index_lru_cache &	operator= (const Parsed_index_lru_cache &)=delete
dict_index_t *	lookup (sequence_view &buffer)
bool	insert_mru (sequence_view key, dict_index_t *index)

Static Public Attributes
static constexpr size_t	k_capacity = 100
	A single dict_index_t + dict_table_t takes several kilobytes. More...

Private Types
using	Value = std::unique_ptr< dict_index_t, Index_deleter >

Private Attributes
ut::prefix_cache< byte, Value >	m_cache

Detailed Description

Parsed index cache for redo parsing.

This wrapper binds ut::prefix_cache<byte, Value> to the redo parsing use case where Value is a unique_ptr owning dict_index_t with custom cleanup.

Member Typedef Documentation

sequence

using Parsed_index_lru_cache::sequence = std::basic_string<byte>

sequence_view

using Parsed_index_lru_cache::sequence_view = std::basic_string_view<byte>

Value

using Parsed_index_lru_cache::Value = std::unique_ptr<dict_index_t, Index_deleter>

private

Constructor & Destructor Documentation

Parsed_index_lru_cache() [1/2]

Parsed_index_lru_cache::Parsed_index_lru_cache ( )

inline

Parsed_index_lru_cache() [2/2]

Parsed_index_lru_cache::Parsed_index_lru_cache ( const Parsed_index_lru_cache &  )

delete

Member Function Documentation

insert_mru()

bool Parsed_index_lru_cache::insert_mru ( sequence_view  key, dict_index_t *  index  )

inline

lookup()

dict_index_t * Parsed_index_lru_cache::lookup ( sequence_view &  buffer )

inline

operator=()

Parsed_index_lru_cache & Parsed_index_lru_cache::operator= ( const Parsed_index_lru_cache &  )

delete

Member Data Documentation

k_capacity

constexpr size_t Parsed_index_lru_cache::k_capacity = 100

staticconstexpr

A single dict_index_t + dict_table_t takes several kilobytes.

InnoDB recovery logic needs one cache for the main thread doing the parsing, and one for each of srv_n_read_io_threads.

m_cache

ut::prefix_cache<byte, Value> Parsed_index_lru_cache::m_cache

private

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

• storage/innobase/include/log0parsed_index_lru_cache.h