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

#include <bdb.h>

Inheritance diagram for BerkeleyDatabase:

Collaboration diagram for BerkeleyDatabase:

Public Member Functions
	BerkeleyDatabase ()=delete

	BerkeleyDatabase (std::shared_ptr< BerkeleyEnvironment > envIn, std::string filename)
	Create DB handle to real database. More...

	~BerkeleyDatabase () override

void	Open () override
	Open the database if it is not already opened. More...

bool	Rewrite (const char *pszSkip=nullptr) override
	Rewrite the entire database on disk, with the exception of key pszSkip if non-zero. More...

void	AddRef () override
	Indicate the a new database user has began using the database. More...

void	RemoveRef () override
	Indicate that database user has stopped using the database and that it could be flushed or closed. More...

bool	Backup (const std::string &strDest) const override
	Back up the entire database to a file. More...

void	Flush () override
	Make sure all changes are flushed to database file. More...

void	Close () override
	Flush to the database file and close the database. More...

bool	PeriodicFlush () override
	flush the wallet passively (TRY_LOCK) ideal to be called periodically More...

void	IncrementUpdateCounter () override

void	ReloadDbEnv () override

bool	Verify (bilingual_str &error)
	Verifies the environment and database file. More...

std::string	Filename () override
	Return path to main database filename. More...

std::unique_ptr< DatabaseBatch >	MakeBatch (bool flush_on_close=true) override
	Make a BerkeleyBatch connected to this database. More...

Public Member Functions inherited from WalletDatabase
	WalletDatabase ()
	Create dummy DB handle. More...

virtual	~WalletDatabase ()

Public Attributes
std::shared_ptr< BerkeleyEnvironment >	env
	Pointer to shared database environment. More...

std::unique_ptr< Db >	m_db
	Database pointer. More...

std::string	strFile

Public Attributes inherited from WalletDatabase
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

unsigned int	nLastFlushed

int64_t	nLastWalletUpdate

Detailed Description

An instance of this class represents one database.

For BerkeleyDB this is just a (env, strFile) tuple.

Definition at line 93 of file bdb.h.

Constructor & Destructor Documentation

◆ BerkeleyDatabase() [1/2]

BerkeleyDatabase::BerkeleyDatabase ( )

delete

◆ BerkeleyDatabase() [2/2]

BerkeleyDatabase::BerkeleyDatabase	(	std::shared_ptr< BerkeleyEnvironment >	envIn,
		std::string	filename
	)

inline

Create DB handle to real database.

Definition at line 98 of file bdb.h.

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◆ ~BerkeleyDatabase()

BerkeleyDatabase::~BerkeleyDatabase ( )

override

Definition at line 317 of file bdb.cpp.

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Member Function Documentation

◆ AddRef()

void BerkeleyDatabase::AddRef ( )

overridevirtual

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

Implements WalletDatabase.

Definition at line 872 of file bdb.cpp.

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◆ Backup()

bool BerkeleyDatabase::Backup ( const std::string & strDest ) const

overridevirtual

Back up the entire database to a file.

Implements WalletDatabase.

Definition at line 679 of file bdb.cpp.

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◆ Close()

void BerkeleyDatabase::Close ( )

overridevirtual

Flush to the database file and close the database.

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

Implements WalletDatabase.

Definition at line 724 of file bdb.cpp.

◆ Filename()

std::string BerkeleyDatabase::Filename ( )

inlineoverridevirtual

Return path to main database filename.

Implements WalletDatabase.

Definition at line 157 of file bdb.h.

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◆ Flush()

void BerkeleyDatabase::Flush ( )

overridevirtual

Make sure all changes are flushed to database file.

Implements WalletDatabase.

Definition at line 720 of file bdb.cpp.

◆ IncrementUpdateCounter()

void BerkeleyDatabase::IncrementUpdateCounter ( )

overridevirtual

Implements WalletDatabase.

Definition at line 422 of file bdb.cpp.

◆ MakeBatch()

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

overridevirtual

Make a BerkeleyBatch connected to this database.

Implements WalletDatabase.

Definition at line 890 of file bdb.cpp.

◆ Open()

void BerkeleyDatabase::Open ( )

overridevirtual

Open the database if it is not already opened.

Implements WalletDatabase.

Definition at line 347 of file bdb.cpp.

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◆ PeriodicFlush()

bool BerkeleyDatabase::PeriodicFlush ( )

overridevirtual

flush the wallet passively (TRY_LOCK) ideal to be called periodically

Implements WalletDatabase.

Definition at line 646 of file bdb.cpp.

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◆ ReloadDbEnv()

void BerkeleyDatabase::ReloadDbEnv ( )

overridevirtual

Implements WalletDatabase.

Definition at line 728 of file bdb.cpp.

◆ RemoveRef()

void BerkeleyDatabase::RemoveRef ( )

overridevirtual

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

Implements WalletDatabase.

Definition at line 881 of file bdb.cpp.

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◆ Rewrite()

bool BerkeleyDatabase::Rewrite ( const char * pszSkip = nullptr )

overridevirtual

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

Implements WalletDatabase.

Definition at line 488 of file bdb.cpp.

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◆ Verify()

bool BerkeleyDatabase::Verify ( bilingual_str & error )

Verifies the environment and database file.

Definition at line 281 of file bdb.cpp.

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Member Data Documentation

◆ env

std::shared_ptr<BerkeleyEnvironment> BerkeleyDatabase::env

Pointer to shared database environment.

Normally there is only one BerkeleyDatabase object per BerkeleyEnvivonment, but in the special, backwards compatible case where multiple wallet BDB data files are loaded from the same directory, this will point to a shared instance that gets freed when the last data file is closed.

Definition at line 170 of file bdb.h.

◆ m_db

std::unique_ptr<Db> BerkeleyDatabase::m_db

Database pointer.

This is initialized lazily and reset during flushes, so it can be null.

Definition at line 176 of file bdb.h.

◆ strFile

std::string BerkeleyDatabase::strFile

Definition at line 178 of file bdb.h.

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

src/wallet/bdb.h
src/wallet/bdb.cpp

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ BerkeleyDatabase() [1/2]

◆ BerkeleyDatabase() [2/2]

◆ ~BerkeleyDatabase()

Member Function Documentation

◆ AddRef()

◆ Backup()

◆ Close()

◆ Filename()

◆ Flush()

◆ IncrementUpdateCounter()

◆ MakeBatch()

◆ Open()

◆ PeriodicFlush()

◆ ReloadDbEnv()

◆ RemoveRef()

◆ Rewrite()

◆ Verify()

Member Data Documentation

◆ env

◆ m_db

◆ strFile