This is a minimally invasive approach to shutdown on LevelDB read errors from the chainstate, while keeping user interface out of the common library, which is shared between bitcoind, and bitcoin-qt and non-server tools. More...

#include <coins.h>

Inheritance diagram for CCoinsViewErrorCatcher:

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Collaboration diagram for CCoinsViewErrorCatcher:

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Public Member Functions
	CCoinsViewErrorCatcher (CCoinsView *view)

void	AddReadErrCallback (std::function< void()> f)

std::optional< Coin >	GetCoin (const COutPoint &outpoint) const override
	Retrieve the Coin (unspent transaction output) for a given outpoint. More...

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

Public Member Functions inherited from CCoinsViewBacked
	CCoinsViewBacked (CCoinsView *viewIn)

std::optional< Coin >	GetCoin (const COutPoint &outpoint) const override
	Retrieve the Coin (unspent transaction output) for a given outpoint. 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)

bool	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 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 (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...

Private Attributes
std::vector< std::function< void()> >	m_err_callbacks
	A list of callbacks to execute upon leveldb read error. More...

Additional Inherited Members
Protected Attributes inherited from CCoinsViewBacked
CCoinsView *	base

Detailed Description

This is a minimally invasive approach to shutdown on LevelDB read errors from the chainstate, while keeping user interface out of the common library, which is shared between bitcoind, and bitcoin-qt and non-server tools.

Writes do not need similar protection, as failure to write is handled by the caller.

Definition at line 511 of file coins.h.

Constructor & Destructor Documentation

◆ CCoinsViewErrorCatcher()

CCoinsViewErrorCatcher::CCoinsViewErrorCatcher ( CCoinsView * view )

inlineexplicit

Definition at line 514 of file coins.h.

Member Function Documentation

◆ AddReadErrCallback()

void CCoinsViewErrorCatcher::AddReadErrCallback ( std::function< void()> f )

inline

Definition at line 516 of file coins.h.

◆ GetCoin()

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

overridevirtual

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

Reimplemented from CCoinsViewBacked.

Definition at line 380 of file coins.cpp.

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◆ HaveCoin()

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

overridevirtual

Just check whether a given outpoint is unspent.

Reimplemented from CCoinsViewBacked.

Definition at line 385 of file coins.cpp.

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Member Data Documentation

◆ m_err_callbacks

std::vector<std::function<void()> > CCoinsViewErrorCatcher::m_err_callbacks

private

A list of callbacks to execute upon leveldb read error.

Definition at line 525 of file coins.h.

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

src/coins.h
src/coins.cpp

Public Member Functions

Private Attributes

Additional Inherited Members