CCoinsViewDB Class Reference

CCoinsView backed by the coin database (chainstate/). More...

#include <txdb.h>

Inheritance diagram for CCoinsViewDB:

Collaboration diagram for CCoinsViewDB:

Public Member Functions
	CCoinsViewDB (DBParams db_params, CoinsViewOptions options)
std::optional< Coin >	GetCoin (const COutPoint &outpoint) const override
bool	HaveCoin (const COutPoint &outpoint) const override
uint256	GetBestBlock () const override
	Retrieve the block hash whose state this CCoinsView currently represents.
std::vector< uint256 >	GetHeadBlocks () const override
void	BatchWrite (CoinsViewCacheCursor &cursor, const uint256 &hashBlock) override
std::unique_ptr< CCoinsViewCursor >	Cursor () const override
	Get a cursor to iterate over the whole state.
bool	NeedsUpgrade ()
	Whether an unsupported database format is used.
size_t	EstimateSize () const override
	Estimate database size (0 if not implemented).
void	ResizeCache (size_t new_cache_size) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
	Dynamically alter the underlying leveldb cache size.
Public Member Functions inherited from CCoinsView
virtual std::optional< Coin >	PeekCoin (const COutPoint &outpoint) const
virtual	~CCoinsView ()=default
	As we use CCoinsViews polymorphically, have a virtual destructor.

Protected Attributes
DBParams	m_db_params
CoinsViewOptions	m_options
std::unique_ptr< CDBWrapper >	m_db

Detailed Description

CCoinsView backed by the coin database (chainstate/).

Definition at line 34 of file txdb.h.

Constructor & Destructor Documentation

CCoinsViewDB()

CCoinsViewDB::CCoinsViewDB ( DBParams db_params, CoinsViewOptions options )

explicit

Definition at line 53 of file txdb.cpp.

Member Function Documentation

BatchWrite()

void CCoinsViewDB::BatchWrite ( CoinsViewCacheCursor & cursor, const uint256 & hashBlock )

overridevirtual

Do a bulk modification (multiple Coin changes + BestBlock change). The passed cursor is used to iterate through the coins.

Reimplemented from CCoinsView.

Definition at line 100 of file txdb.cpp.

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Cursor()

std::unique_ptr< CCoinsViewCursor > CCoinsViewDB::Cursor ( ) const

overridevirtual

Get a cursor to iterate over the whole state.

Reimplemented from CCoinsView.

Definition at line 194 of file txdb.cpp.

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EstimateSize()

size_t CCoinsViewDB::EstimateSize ( ) const

overridevirtual

Estimate database size (0 if not implemented).

Reimplemented from CCoinsView.

Definition at line 166 of file txdb.cpp.

GetBestBlock()

uint256 CCoinsViewDB::GetBestBlock ( ) const

overridevirtual

Retrieve the block hash whose state this CCoinsView currently represents.

Reimplemented from CCoinsView.

Definition at line 85 of file txdb.cpp.

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GetCoin()

std::optional< Coin > CCoinsViewDB::GetCoin ( const COutPoint & outpoint ) const

overridevirtual

Retrieve the Coin (unspent transaction output) for a given outpoint. May populate the cache. Use PeekCoin() to perform a non-caching lookup.

Reimplemented from CCoinsView.

Definition at line 72 of file txdb.cpp.

GetHeadBlocks()

std::vector< uint256 > CCoinsViewDB::GetHeadBlocks ( ) const

overridevirtual

Retrieve the range of blocks that may have been only partially written. If the database is in a consistent state, the result is the empty vector. Otherwise, a two-element vector is returned consisting of the new and the old block hash, in that order.

Reimplemented from CCoinsView.

Definition at line 92 of file txdb.cpp.

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HaveCoin()

bool CCoinsViewDB::HaveCoin ( const COutPoint & outpoint ) const

overridevirtual

Just check whether a given outpoint is unspent. May populate the cache. Use PeekCoin() to perform a non-caching lookup.

Reimplemented from CCoinsView.

Definition at line 81 of file txdb.cpp.

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NeedsUpgrade()

bool CCoinsViewDB::NeedsUpgrade

(

)

Whether an unsupported database format is used.

Definition at line 32 of file txdb.cpp.

ResizeCache()

void CCoinsViewDB::ResizeCache

(

size_t

new_cache_size

)

Dynamically alter the underlying leveldb cache size.

Definition at line 58 of file txdb.cpp.

Member Data Documentation

m_db

std::unique_ptr<CDBWrapper> CCoinsViewDB::m_db

protected

Definition at line 39 of file txdb.h.

m_db_params

DBParams CCoinsViewDB::m_db_params

protected

Definition at line 37 of file txdb.h.

m_options

CoinsViewOptions CCoinsViewDB::m_options

protected

Definition at line 38 of file txdb.h.

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

• src/txdb.h
• src/txdb.cpp