CCoinsView Class Reference

Pure abstract view on the open txout dataset. More...

#include <coins.h>

Inheritance diagram for CCoinsView:

Public Member Functions
virtual	~CCoinsView ()=default
	As we use CCoinsViews polymorphically, have a virtual destructor.
virtual std::optional< Coin >	GetCoin (const COutPoint &outpoint) const =0
	Retrieve the Coin (unspent transaction output) for a given outpoint.
virtual std::optional< Coin >	PeekCoin (const COutPoint &outpoint) const =0
	Retrieve the Coin (unspent transaction output) for a given outpoint, without caching results.
virtual bool	HaveCoin (const COutPoint &outpoint) const =0
	Just check whether a given outpoint is unspent.
virtual uint256	GetBestBlock () const =0
	Retrieve the block hash whose state this CCoinsView currently represents.
virtual std::vector< uint256 >	GetHeadBlocks () const =0
	Retrieve the range of blocks that may have been only partially written.
virtual void	BatchWrite (CoinsViewCacheCursor &cursor, const uint256 &block_hash)=0
	Do a bulk modification (multiple Coin changes + BestBlock change).
virtual size_t	EstimateSize () const =0
	Estimate database size.

Detailed Description

Pure abstract view on the open txout dataset.

Definition at line 355 of file coins.h.

Constructor & Destructor Documentation

~CCoinsView()

virtual CCoinsView::~CCoinsView ( )

virtualdefault

As we use CCoinsViews polymorphically, have a virtual destructor.

Member Function Documentation

BatchWrite()

virtual void CCoinsView::BatchWrite ( CoinsViewCacheCursor &  cursor, const uint256 &  block_hash  )

pure virtual

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

The passed cursor is used to iterate through the coins.

Implemented in CoinsViewEmpty, CCoinsViewBacked, CCoinsViewCache, and CCoinsViewDB.

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EstimateSize()

virtual size_t CCoinsView::EstimateSize ( ) const

pure virtual

Estimate database size.

Implemented in CoinsViewEmpty, CCoinsViewBacked, and CCoinsViewDB.

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GetBestBlock()

virtual uint256 CCoinsView::GetBestBlock ( ) const

pure virtual

Retrieve the block hash whose state this CCoinsView currently represents.

Implemented in CoinsViewEmpty, CCoinsViewBacked, CCoinsViewCache, and CCoinsViewDB.

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GetCoin()

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

pure virtual

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

May populate the cache. Use PeekCoin() to perform a non-caching lookup.

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

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GetHeadBlocks()

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

pure 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.

Implemented in CoinsViewEmpty, CCoinsViewBacked, and CCoinsViewDB.

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HaveCoin()

virtual bool CCoinsView::HaveCoin ( const COutPoint &  outpoint ) const

pure virtual

Just check whether a given outpoint is unspent.

May populate the cache. Use PeekCoin() to perform a non-caching lookup.

Implemented in CoinsViewEmpty, CCoinsViewBacked, CCoinsViewCache, CCoinsViewErrorCatcher, and CCoinsViewDB.

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PeekCoin()

virtual std::optional< Coin > CCoinsView::PeekCoin ( const COutPoint &  outpoint ) const

pure virtual

Retrieve the Coin (unspent transaction output) for a given outpoint, without caching results.

Does not populate the cache. Use GetCoin() to cache the result.

Implemented in CoinsViewEmpty, CCoinsViewBacked, CCoinsViewCache, CCoinsViewErrorCatcher, and CCoinsViewDB.

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

• src/coins.h