WalletDatabase Class Reference

An instance of this class represents one database. More...

#include <db.h>

Inheritance diagram for WalletDatabase:

Public Member Functions
	WalletDatabase ()
	Create dummy DB handle.
virtual	~WalletDatabase ()
virtual void	Open ()=0
	Open the database if it is not already opened.
virtual void	AddRef ()=0
	Indicate the a new database user has began using the database.
virtual void	RemoveRef ()=0
	Indicate that database user has stopped using the database and that it could be flushed or closed.
virtual bool	Rewrite (const char *pszSkip=nullptr)=0
	Rewrite the entire database on disk, with the exception of key pszSkip if non-zero.
virtual bool	Backup (const std::string &strDest) const =0
	Back up the entire database to a file.
virtual void	Flush ()=0
	Make sure all changes are flushed to database file.
virtual void	Close ()=0
	Flush to the database file and close the database.
virtual bool	PeriodicFlush ()=0
virtual void	IncrementUpdateCounter ()=0
virtual void	ReloadDbEnv ()=0
virtual std::string	Filename ()=0
	Return path to main database file for logs and error messages.
virtual std::unique_ptr< DatabaseBatch >	MakeBatch (bool flush_on_close=true)=0
	Make a DatabaseBatch connected to this database.

Public Attributes
std::atomic< int >	m_refcount {0}
	Counts the number of active database users to be sure that the database is not closed while someone is using it.
std::atomic< unsigned int >	nUpdateCounter
unsigned int	nLastSeen
unsigned int	nLastFlushed
int64_t	nLastWalletUpdate

Detailed Description

An instance of this class represents one database.

Definition at line 100 of file db.h.

Constructor & Destructor Documentation

WalletDatabase()

WalletDatabase::WalletDatabase ( )

inline

Create dummy DB handle.

Definition at line 103 of file db.h.

~WalletDatabase()

virtual WalletDatabase::~WalletDatabase ( )

inlinevirtual

Definition at line 106 of file db.h.

Member Function Documentation

AddRef()

virtual void WalletDatabase::AddRef ( )

pure virtual

Indicate the a new database user has began using the database.

Increments m_refcount

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

Backup()

virtual bool WalletDatabase::Backup ( const std::string &  strDest ) const

pure virtual

Back up the entire database to a file.

Implemented in SQLiteDatabase, BerkeleyDatabase, and DummyDatabase.

Close()

virtual void WalletDatabase::Close ( )

pure virtual

Flush to the database file and close the database.

Also close the environment if no other databases are open in it.

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

Filename()

virtual std::string WalletDatabase::Filename ( )

pure virtual

Return path to main database file for logs and error messages.

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

Flush()

virtual void WalletDatabase::Flush ( )

pure virtual

Make sure all changes are flushed to database file.

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

IncrementUpdateCounter()

virtual void WalletDatabase::IncrementUpdateCounter ( )

pure virtual

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

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MakeBatch()

virtual std::unique_ptr< DatabaseBatch > WalletDatabase::MakeBatch ( bool  flush_on_close = true )

pure virtual

Make a DatabaseBatch connected to this database.

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

Open()

virtual void WalletDatabase::Open ( )

pure virtual

Open the database if it is not already opened.

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

PeriodicFlush()

virtual bool WalletDatabase::PeriodicFlush ( )

pure virtual

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

ReloadDbEnv()

virtual void WalletDatabase::ReloadDbEnv ( )

pure virtual

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

RemoveRef()

virtual void WalletDatabase::RemoveRef ( )

pure virtual

Indicate that database user has stopped using the database and that it could be flushed or closed.

Decrement m_refcount

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

Rewrite()

virtual bool WalletDatabase::Rewrite ( const char *  pszSkip = nullptr )

pure virtual

Rewrite the entire database on disk, with the exception of key pszSkip if non-zero.

Implemented in BerkeleyDatabase, DummyDatabase, and SQLiteDatabase.

Member Data Documentation

m_refcount

std::atomic<int> WalletDatabase::m_refcount {0}

Counts the number of active database users to be sure that the database is not closed while someone is using it.

Definition at line 113 of file db.h.

nLastFlushed

unsigned int WalletDatabase::nLastFlushed

Definition at line 158 of file db.h.

nLastSeen

unsigned int WalletDatabase::nLastSeen

Definition at line 157 of file db.h.

nLastWalletUpdate

int64_t WalletDatabase::nLastWalletUpdate

Definition at line 159 of file db.h.

nUpdateCounter

std::atomic<unsigned int> WalletDatabase::nUpdateCounter

Definition at line 156 of file db.h.

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

• src/wallet/db.h