ExpirationCache< Key > Class Template Reference

#include <util.hpp>

Public Member Functions
	ExpirationCache (uint32_t max_size, uint32_t delete_step)
bool	insert (Key const &key)
	Inserts key into the cache map. In case provided key is already in cache, only shared lock is acquired and function returns false. This means insert does not need to be used together with count() to save the performance by not acquiring unique lock. More...
bool	contains (Key const &key) const
void	erase (Key const &key)
std::size_t	count (Key const &key) const
std::size_t	size () const
void	clear ()

Protected Attributes
std::unordered_set< Key >	cache_
const uint32_t	kMaxSize
const uint32_t	kDeleteStep
std::shared_mutex	mtx_

Private Attributes
std::deque< Key >	expiration_

Constructor & Destructor Documentation

ExpirationCache()

template<class Key >

ExpirationCache< Key >::ExpirationCache ( uint32_t  max_size, uint32_t  delete_step  )

inline

Member Function Documentation

clear()

template<class Key >

void ExpirationCache< Key >::clear ( )

inline

contains()

template<class Key >

bool ExpirationCache< Key >::contains ( Key const &  key ) const

inline

count()

template<class Key >

std::size_t ExpirationCache< Key >::count ( Key const &  key ) const

inline

erase()

template<class Key >

void ExpirationCache< Key >::erase ( Key const &  key )

inline

insert()

template<class Key >

bool ExpirationCache< Key >::insert ( Key const &  key )

inline

Inserts key into the cache map. In case provided key is already in cache, only shared lock is acquired and function returns false. This means insert does not need to be used together with count() to save the performance by not acquiring unique lock.

Parameters

key

Returns

true if actual insertion took place, otherwise false

size()

template<class Key >

std::size_t ExpirationCache< Key >::size ( ) const

inline

Member Data Documentation

cache_

template<class Key >

std::unordered_set<Key> ExpirationCache< Key >::cache_

protected

expiration_

template<class Key >

std::deque<Key> ExpirationCache< Key >::expiration_

private

kDeleteStep

template<class Key >

const uint32_t ExpirationCache< Key >::kDeleteStep

protected

kMaxSize

template<class Key >

const uint32_t ExpirationCache< Key >::kMaxSize

protected

mtx_

template<class Key >

std::shared_mutex ExpirationCache< Key >::mtx_

mutableprotected

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

• libraries/common/include/common/util.hpp