CCoinsViewBacked Class Reference

CCoinsView backed by another CCoinsView. More...

#include <coins.h>

Inheritance diagram for CCoinsViewBacked:

Collaboration diagram for CCoinsViewBacked:

Public Member Functions
	CCoinsViewBacked (CCoinsView *viewIn)
std::optional< Coin >	GetCoin (const COutPoint &outpoint) const override
	Retrieve the Coin (unspent transaction output) for a given outpoint. More...
std::optional< Coin >	PeekCoin (const COutPoint &outpoint) const override
	Retrieve the Coin (unspent transaction output) for a given outpoint, without caching results. More...
bool	HaveCoin (const COutPoint &outpoint) const override
	Just check whether a given outpoint is unspent. More...
uint256	GetBestBlock () const override
	Retrieve the block hash whose state this CCoinsView currently represents. More...
std::vector< uint256 >	GetHeadBlocks () const override
	Retrieve the range of blocks that may have been only partially written. More...
void	SetBackend (CCoinsView &viewIn)
void	BatchWrite (CoinsViewCacheCursor &cursor, const uint256 &hashBlock) override
	Do a bulk modification (multiple Coin changes + BestBlock change). More...
std::unique_ptr< CCoinsViewCursor >	Cursor () const override
	Get a cursor to iterate over the whole state. More...
size_t	EstimateSize () const override
	Estimate database size (0 if not implemented) More...
Public Member Functions inherited from CCoinsView
virtual std::optional< Coin >	GetCoin (const COutPoint &outpoint) const
	Retrieve the Coin (unspent transaction output) for a given outpoint. More...
virtual std::optional< Coin >	PeekCoin (const COutPoint &outpoint) const
	Retrieve the Coin (unspent transaction output) for a given outpoint, without caching results. 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 void	BatchWrite (CoinsViewCacheCursor &cursor, const uint256 &hashBlock)
	Do a bulk modification (multiple Coin changes + BestBlock change). More...
virtual std::unique_ptr< CCoinsViewCursor >	Cursor () const
	Get a cursor to iterate over the whole state. More...
virtual	~CCoinsView ()=default
	As we use CCoinsViews polymorphically, have a virtual destructor. More...
virtual size_t	EstimateSize () const
	Estimate database size (0 if not implemented) More...

Protected Attributes
CCoinsView *	base

Detailed Description

CCoinsView backed by another CCoinsView.

Definition at line 346 of file coins.h.

Constructor & Destructor Documentation

CCoinsViewBacked()

CCoinsViewBacked::CCoinsViewBacked

(

CCoinsView *

viewIn

)

Definition at line 33 of file coins.cpp.

Member Function Documentation

BatchWrite()

void CCoinsViewBacked::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.

Reimplemented in CCoinsViewCache.

Definition at line 40 of file coins.cpp.

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Cursor()

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

overridevirtual

Get a cursor to iterate over the whole state.

Reimplemented from CCoinsView.

Reimplemented in CCoinsViewCache.

Definition at line 41 of file coins.cpp.

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EstimateSize()

size_t CCoinsViewBacked::EstimateSize ( ) const

overridevirtual

Estimate database size (0 if not implemented)

Reimplemented from CCoinsView.

Definition at line 42 of file coins.cpp.

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GetBestBlock()

uint256 CCoinsViewBacked::GetBestBlock ( ) const

overridevirtual

Retrieve the block hash whose state this CCoinsView currently represents.

Reimplemented from CCoinsView.

Reimplemented in CCoinsViewCache.

Definition at line 37 of file coins.cpp.

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GetCoin()

std::optional< Coin > CCoinsViewBacked::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.

Reimplemented in CCoinsViewCache, CCoinsViewErrorCatcher, and CCoinsViewMemPool.

Definition at line 34 of file coins.cpp.

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GetHeadBlocks()

std::vector< uint256 > CCoinsViewBacked::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 38 of file coins.cpp.

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HaveCoin()

bool CCoinsViewBacked::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.

Reimplemented in CCoinsViewCache, and CCoinsViewErrorCatcher.

Definition at line 36 of file coins.cpp.

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PeekCoin()

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

overridevirtual

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

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

Reimplemented from CCoinsView.

Reimplemented in CCoinsViewCache, and CCoinsViewErrorCatcher.

Definition at line 35 of file coins.cpp.

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SetBackend()

void CCoinsViewBacked::SetBackend

(

CCoinsView &

viewIn

)

Definition at line 39 of file coins.cpp.

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Member Data Documentation

base

CCoinsView* CCoinsViewBacked::base

protected

Definition at line 349 of file coins.h.

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

• src/coins.h
• src/coins.cpp