CCoinsView Class Reference

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

#include <coins.h>

Inheritance diagram for CCoinsView:

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

Detailed Description

Abstract view on the open txout dataset.

Definition at line 307 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()

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

virtual

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

The passed cursor is used to iterate through the coins.

Reimplemented in CCoinsViewBacked, CCoinsViewCache, and CCoinsViewDB.

Definition at line 21 of file coins.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

Cursor()

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

virtual

Get a cursor to iterate over the whole state.

Reimplemented in CCoinsViewBacked, CCoinsViewCache, and CCoinsViewDB.

Definition at line 26 of file coins.cpp.

Here is the caller graph for this function:

EstimateSize()

virtual size_t CCoinsView::EstimateSize ( ) const

inlinevirtual

Estimate database size (0 if not implemented)

Reimplemented in CCoinsViewBacked, and CCoinsViewDB.

Definition at line 342 of file coins.h.

Here is the caller graph for this function:

GetBestBlock()

uint256 CCoinsView::GetBestBlock ( ) const

virtual

Retrieve the block hash whose state this CCoinsView currently represents.

Reimplemented in CCoinsViewBacked, CCoinsViewCache, and CCoinsViewDB.

Definition at line 19 of file coins.cpp.

Here is the caller graph for this function:

GetCoin()

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

virtual

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

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

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

Definition at line 17 of file coins.cpp.

Here is the caller graph for this function:

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 20 of file coins.cpp.

Here is the caller graph for this function:

HaveCoin()

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

virtual

Just check whether a given outpoint is unspent.

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

Reimplemented in CCoinsViewBacked, CCoinsViewCache, CCoinsViewErrorCatcher, and CCoinsViewDB.

Definition at line 28 of file coins.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

PeekCoin()

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

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.

Reimplemented in CCoinsViewBacked, CCoinsViewCache, and CCoinsViewErrorCatcher.

Definition at line 18 of file coins.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

---

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

• src/coins.h
• src/coins.cpp