wallet::WalletDatabase Class Reference

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

#include <db.h>

Inheritance diagram for wallet::WalletDatabase:

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

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. More...
std::atomic< unsigned int >	nUpdateCounter
unsigned int	nLastSeen {0}
unsigned int	nLastFlushed {0}
int64_t	nLastWalletUpdate {0}

Detailed Description

An instance of this class represents one database.

Definition at line 123 of file db.h.

Constructor & Destructor Documentation

WalletDatabase()

wallet::WalletDatabase::WalletDatabase ( )

inline

Create dummy DB handle.

Definition at line 127 of file db.h.

~WalletDatabase()

virtual wallet::WalletDatabase::~WalletDatabase ( )

inlinevirtual

Definition at line 128 of file db.h.

Member Function Documentation

AddRef()

virtual void wallet::WalletDatabase::AddRef ( )

pure virtual

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

Increments m_refcount

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

Backup()

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

pure virtual

Back up the entire database to a file.

Implemented in wallet::MockableDatabase, wallet::DummyDatabase, wallet::BerkeleyDatabase, and wallet::SQLiteDatabase.

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Close()

virtual void wallet::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 wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

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Filename()

virtual std::string wallet::WalletDatabase::Filename ( )

pure virtual

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

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

Flush()

virtual void wallet::WalletDatabase::Flush ( )

pure virtual

Make sure all changes are flushed to database file.

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

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Format()

virtual std::string wallet::WalletDatabase::Format ( )

pure virtual

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

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IncrementUpdateCounter()

virtual void wallet::WalletDatabase::IncrementUpdateCounter ( )

pure virtual

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

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MakeBatch()

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

pure virtual

Make a DatabaseBatch connected to this database.

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

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Open()

virtual void wallet::WalletDatabase::Open ( )

pure virtual

Open the database if it is not already opened.

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

PeriodicFlush()

virtual bool wallet::WalletDatabase::PeriodicFlush ( )

pure virtual

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

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ReloadDbEnv()

virtual void wallet::WalletDatabase::ReloadDbEnv ( )

pure virtual

Implemented in wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

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RemoveRef()

virtual void wallet::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 wallet::MockableDatabase, wallet::SQLiteDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

Rewrite()

virtual bool wallet::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 wallet::SQLiteDatabase, wallet::MockableDatabase, wallet::DummyDatabase, and wallet::BerkeleyDatabase.

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Member Data Documentation

m_refcount

std::atomic<int> wallet::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 134 of file db.h.

nLastFlushed

unsigned int wallet::WalletDatabase::nLastFlushed {0}

Definition at line 170 of file db.h.

nLastSeen

unsigned int wallet::WalletDatabase::nLastSeen {0}

Definition at line 169 of file db.h.

nLastWalletUpdate

int64_t wallet::WalletDatabase::nLastWalletUpdate {0}

Definition at line 171 of file db.h.

nUpdateCounter

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

Definition at line 168 of file db.h.

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

• src/wallet/db.h