catapult::consumers::RecentHashCache Class Reference

A hash cache that holds recently seen hashes. More...

Collaboration diagram for catapult::consumers::RecentHashCache:

Public Member Functions
	RecentHashCache (const chain::TimeSupplier &timeSupplier, const HashCheckOptions &options)
	Creates a recent hash cache around timeSupplier and options. More...
size_t	size () const
	Gets the size of the cache. More...
bool	add (const Hash256 &hash)
bool	contains (const Hash256 &hash) const
	Returns true if the cache contains hash, false otherwise. More...

Private Member Functions
bool	checkAndUpdateExisting (const Hash256 &hash, const Timestamp &time)
void	pruneCache (const Timestamp &time)
void	tryAddToCache (const Hash256 &hash, const Timestamp &time)

Private Attributes
chain::TimeSupplier	m_timeSupplier
HashCheckOptions	m_options
Timestamp	m_lastPruneTime
std::unordered_map< Hash256, Timestamp, utils::ArrayHasher< Hash256 > >	m_cache

Detailed Description

A hash cache that holds recently seen hashes.

Constructor & Destructor Documentation

RecentHashCache()

catapult::consumers::RecentHashCache::RecentHashCache	(	const chain::TimeSupplier &	timeSupplier,
		const HashCheckOptions &	options
	)

Creates a recent hash cache around timeSupplier and options.

Member Function Documentation

add()

bool catapult::consumers::RecentHashCache::add

(

const Hash256 &

hash

)

Checks if hash is already in the cache and adds it to the cache if it is unknown.

Note

This also prunes the hash cache.

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checkAndUpdateExisting()

bool catapult::consumers::RecentHashCache::checkAndUpdateExisting ( const Hash256 &  hash, const Timestamp &  time  )

private

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contains()

bool catapult::consumers::RecentHashCache::contains

(

const Hash256 &

hash

)

const

Returns true if the cache contains hash, false otherwise.

pruneCache()

void catapult::consumers::RecentHashCache::pruneCache ( const Timestamp &  time )

private

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size()

size_t catapult::consumers::RecentHashCache::size

(

)

const

Gets the size of the cache.

tryAddToCache()

void catapult::consumers::RecentHashCache::tryAddToCache ( const Hash256 &  hash, const Timestamp &  time  )

private

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Member Data Documentation

m_cache

std::unordered_map<Hash256, Timestamp, utils::ArrayHasher<Hash256> > catapult::consumers::RecentHashCache::m_cache

private

m_lastPruneTime

Timestamp catapult::consumers::RecentHashCache::m_lastPruneTime

private

m_options

HashCheckOptions catapult::consumers::RecentHashCache::m_options

private

m_timeSupplier

chain::TimeSupplier catapult::consumers::RecentHashCache::m_timeSupplier

private

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

• RecentHashCache.h
• RecentHashCache.cpp