Abstract view on the open txout dataset. More...

#include <coins.h>

Inheritance diagram for CCoinsView:

Public Member Functions
virtual bool	GetCoin (const COutPoint &outpoint, Coin &coin) const
	Retrieve the Coin (unspent transaction output) for a given outpoint. More...

virtual bool	HaveCoin (const COutPoint &outpoint) const
	Just check whether a given outpoint is unspent. More...

virtual uint256	GetBestBlock () const
	Retrieve the block hash whose state this CCoinsView currently represents. More...

virtual std::vector< uint256 >	GetHeadBlocks () const
	Retrieve the range of blocks that may have been only partially written. More...

virtual bool	BatchWrite (CCoinsMap &mapCoins, const uint256 &hashBlock)
	Do a bulk modification (multiple Coin changes + BestBlock change). More...

virtual CCoinsViewCursor *	Cursor () const
	Get a cursor to iterate over the whole state. More...

virtual	~CCoinsView ()
	As we use CCoinsViews polymorphically, have a virtual destructor. More...

virtual size_t	EstimateSize () const
	Estimate database size (0 if not implemented) More...

Detailed Description

Abstract view on the open txout dataset.

Definition at line 145 of file coins.h.

Constructor & Destructor Documentation

◆ ~CCoinsView()

virtual CCoinsView::~CCoinsView ( )

inlinevirtual

As we use CCoinsViews polymorphically, have a virtual destructor.

Definition at line 174 of file coins.h.

Member Function Documentation

◆ BatchWrite()

bool CCoinsView::BatchWrite	(	CCoinsMap &	mapCoins,
		const uint256 &	hashBlock
	)

virtual

Do a bulk modification (multiple Coin changes + BestBlock change).

The passed mapCoins can be modified.

Reimplemented in CCoinsViewCache, CCoinsViewBacked, and CCoinsViewDB.

Definition at line 13 of file coins.cpp.

Referenced by CCoinsViewBacked::BatchWrite(), and CCoinsViewCache::Flush().

◆ Cursor()

CCoinsViewCursor * CCoinsView::Cursor ( ) const

virtual

Get a cursor to iterate over the whole state.

Reimplemented in CCoinsViewCache, CCoinsViewBacked, and CCoinsViewDB.

Definition at line 14 of file coins.cpp.

Referenced by CCoinsViewBacked::Cursor(), and GetUTXOStats().

◆ EstimateSize()

virtual size_t CCoinsView::EstimateSize ( ) const

inlinevirtual

Estimate database size (0 if not implemented)

Reimplemented in CCoinsViewBacked, and CCoinsViewDB.

Definition at line 177 of file coins.h.

Referenced by CCoinsViewBacked::EstimateSize(), and GetUTXOStats().

◆ GetBestBlock()

uint256 CCoinsView::GetBestBlock ( ) const

virtual

Retrieve the block hash whose state this CCoinsView currently represents.

Reimplemented in CCoinsViewCache, CCoinsViewBacked, and CCoinsViewDB.

Definition at line 11 of file coins.cpp.

Referenced by CCoinsViewBacked::GetBestBlock(), and CCoinsViewCache::GetBestBlock().

◆ GetCoin()

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

virtual

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 in CCoinsViewMemPool, CCoinsViewCache, CCoinsViewErrorCatcher, CCoinsViewBacked, and CCoinsViewDB.

Definition at line 10 of file coins.cpp.

Referenced by CCoinsViewCache::FetchCoin(), CCoinsViewBacked::GetCoin(), CCoinsViewMemPool::GetCoin(), and HaveCoin().

◆ GetHeadBlocks()

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

virtual

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 in CCoinsViewBacked, and CCoinsViewDB.

Definition at line 12 of file coins.cpp.

Referenced by CCoinsViewBacked::GetHeadBlocks(), and CChainState::ReplayBlocks().