Bitcoin Core  0.19.99
P2P Digital Currency
Public Member Functions | Private Attributes | List of all members
CCoinsViewErrorCatcher Class Referencefinal

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>

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Public Member Functions

 CCoinsViewErrorCatcher (CCoinsView *view)
 
void AddReadErrCallback (std::function< void()> f)
 
bool GetCoin (const COutPoint &outpoint, Coin &coin) const override
 Retrieve the Coin (unspent transaction output) for a given outpoint. More...
 
- Public Member Functions inherited from CCoinsViewBacked
 CCoinsViewBacked (CCoinsView *viewIn)
 
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< uint256GetHeadBlocks () const override
 Retrieve the range of blocks that may have been only partially written. More...
 
void SetBackend (CCoinsView &viewIn)
 
bool BatchWrite (CCoinsMap &mapCoins, const uint256 &hashBlock) override
 Do a bulk modification (multiple Coin changes + BestBlock change). More...
 
CCoinsViewCursorCursor () 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 ~CCoinsView ()
 As we use CCoinsViews polymorphically, have a virtual destructor. 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
CCoinsViewbase
 

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 334 of file coins.h.

Constructor & Destructor Documentation

◆ CCoinsViewErrorCatcher()

CCoinsViewErrorCatcher::CCoinsViewErrorCatcher ( CCoinsView view)
inlineexplicit

Definition at line 337 of file coins.h.

Member Function Documentation

◆ AddReadErrCallback()

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

Definition at line 339 of file coins.h.

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◆ GetCoin()

bool CCoinsViewErrorCatcher::GetCoin ( const COutPoint outpoint,
Coin coin 
) const
overridevirtual

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 from CCoinsViewBacked.

Definition at line 263 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 347 of file coins.h.


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