The database stores a block locator of the chain the database is synced to so that the index can efficiently determine the point it last stopped at. More...

#include <base.h>

Inheritance diagram for BaseIndex::DB:

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Collaboration diagram for BaseIndex::DB:

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Public Member Functions
	DB (const fs::path &path, size_t n_cache_size, bool f_memory=false, bool f_wipe=false, bool f_obfuscate=false)

bool	ReadBestBlock (CBlockLocator &locator) const
	Read block locator of the chain that the txindex is in sync with. More...

void	WriteBestBlock (CDBBatch &batch, const CBlockLocator &locator)
	Write block locator of the chain that the txindex is in sync with. More...

Public Member Functions inherited from CDBWrapper
	CDBWrapper (const fs::path &path, size_t nCacheSize, bool fMemory=false, bool fWipe=false, bool obfuscate=false)

	~CDBWrapper ()

	CDBWrapper (const CDBWrapper &)=delete

CDBWrapper &	operator= (const CDBWrapper &)=delete

template<typename K , typename V >
bool	Read (const K &key, V &value) const

template<typename K , typename V >
bool	Write (const K &key, const V &value, bool fSync=false)

template<typename K >
bool	Exists (const K &key) const

template<typename K >
bool	Erase (const K &key, bool fSync=false)

bool	WriteBatch (CDBBatch &batch, bool fSync=false)

size_t	DynamicMemoryUsage () const

CDBIterator *	NewIterator ()

bool	IsEmpty ()
	Return true if the database managed by this class contains no entries. More...

template<typename K >
size_t	EstimateSize (const K &key_begin, const K &key_end) const

template<typename K >
void	CompactRange (const K &key_begin, const K &key_end) const
	Compact a certain range of keys in the database. More...

Detailed Description

The database stores a block locator of the chain the database is synced to so that the index can efficiently determine the point it last stopped at.

A locator is used instead of a simple hash of the chain tip because blocks and block index entries may not be flushed to disk until after this database is updated.

Definition at line 37 of file base.h.

Constructor & Destructor Documentation

◆ DB()

BaseIndex::DB::DB	(	const fs::path &	path,
		size_t	n_cache_size,
		bool	f_memory = `false`,
		bool	f_wipe = `false`,
		bool	f_obfuscate = `false`
	)

Definition at line 32 of file base.cpp.

Member Function Documentation

◆ ReadBestBlock()

bool BaseIndex::DB::ReadBestBlock ( CBlockLocator & locator ) const

Read block locator of the chain that the txindex is in sync with.

Definition at line 36 of file base.cpp.

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◆ WriteBestBlock()

void BaseIndex::DB::WriteBestBlock	(	CDBBatch &	batch,
		const CBlockLocator &	locator
	)

Write block locator of the chain that the txindex is in sync with.

Definition at line 45 of file base.cpp.