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)
bool	GetCoin (const COutPoint &outpoint, Coin &coin) const override
	Retrieve the Coin (unspent transaction output) for a given outpoint.
bool	HaveCoin (const COutPoint &outpoint) const override
	Just check whether a given outpoint is unspent.
uint256	GetBestBlock () const override
	Retrieve the block hash whose state this CCoinsView currently represents.
std::vector< uint256 >	GetHeadBlocks () const override
	Retrieve the range of blocks that may have been only partially written.
bool	BatchWrite (CoinsViewCacheCursor &cursor, const uint256 &hashBlock) override
	Do a bulk modification (multiple Coin changes + BestBlock change).
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.
std::optional< fs::path >	StoragePath ()
Public Member Functions inherited from CCoinsView
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 53 of file txdb.h.

Constructor & Destructor Documentation

CCoinsViewDB()

CCoinsViewDB::CCoinsViewDB ( DBParams db_params, CoinsViewOptions options )

explicit

Definition at line 49 of file txdb.cpp.

Member Function Documentation

BatchWrite()

bool 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 91 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 180 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 152 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 76 of file txdb.cpp.

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GetCoin()

bool CCoinsViewDB::GetCoin ( const COutPoint & outpoint, Coin & coin ) const

overridevirtual

Retrieve the Coin (unspent transaction output) for a given outpoint.

Returns true only when an unspent coin was found, which is returned in coin. When false is returned, coin's value is unspecified.

Reimplemented from CCoinsView.

Definition at line 68 of file txdb.cpp.

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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 83 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.

Reimplemented from CCoinsView.

Definition at line 72 of file txdb.cpp.

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NeedsUpgrade()

bool CCoinsViewDB::NeedsUpgrade

(

)

Whether an unsupported database format is used.

Definition at line 28 of file txdb.cpp.

ResizeCache()

void CCoinsViewDB::ResizeCache

(

size_t

new_cache_size

)

Dynamically alter the underlying leveldb cache size.

Definition at line 54 of file txdb.cpp.

StoragePath()

std::optional< fs::path > CCoinsViewDB::StoragePath ( )

inline

Returns

filesystem path to on-disk storage or std::nullopt if in memory.

Definition at line 77 of file txdb.h.

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Member Data Documentation

m_db

std::unique_ptr<CDBWrapper> CCoinsViewDB::m_db

protected

Definition at line 58 of file txdb.h.

m_db_params

DBParams CCoinsViewDB::m_db_params

protected

Definition at line 56 of file txdb.h.

m_options

CoinsViewOptions CCoinsViewDB::m_options

protected

Definition at line 57 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