sqlite::v2::connection_pool Class Reference

Thread-safe pool for leasing reusable SQLite connections. More...

#include <connection_pool.hpp>

Collaboration diagram for sqlite::v2::connection_pool:

Classes
class	lease

Public Types
using	connection_factory = std::function<std::shared_ptr<connection>()>

Public Member Functions
	connection_pool (std::size_t capacity, connection_factory factory)
	Constructs a pool with a maximum capacity and a factory used to create new connections.
lease	acquire ()
	Blocks until a connection is available and returns a scoped lease.
std::size_t	capacity () const
	Maximum number of concurrent connections the pool will create.
std::size_t	idle_count () const
	Number of idle connections currently waiting in the pool.
std::size_t	created_count () const
	Number of connections that have been created so far.

Static Public Member Functions
static connection_factory	make_factory (std::string db, open_mode mode=open_mode::open_or_create, filesystem_adapter_ptr fs={})
	Helper that captures the parameters for creating connections inside a pool factory.

Private Member Functions
void	release (std::shared_ptr< connection > conn)

Private Attributes
connection_factory	factory_
std::size_t	capacity_
std::size_t	created_ = 0
std::mutex	mutex_
std::condition_variable	cv_
std::vector< std::shared_ptr< connection > >	idle_

Friends
class	lease

Detailed Description

Thread-safe pool for leasing reusable SQLite connections.

Definition at line 55 of file connection_pool.hpp.

Member Typedef Documentation

connection_factory

using sqlite::v2::connection_pool::connection_factory = std::function<std::shared_ptr<connection>()>

Definition at line 57 of file connection_pool.hpp.

Constructor & Destructor Documentation

connection_pool()

sqlite::v2::connection_pool::connection_pool	(	std::size_t	capacity,
		connection_factory	factory )

Constructs a pool with a maximum capacity and a factory used to create new connections.

References capacity().

Referenced by sqlite::v2::connection_pool::lease::lease().

Here is the call graph for this function:

Member Function Documentation

acquire()

lease sqlite::v2::connection_pool::acquire

(

)

Blocks until a connection is available and returns a scoped lease.

capacity()

std::size_t sqlite::v2::connection_pool::capacity

(

)

const

Maximum number of concurrent connections the pool will create.

Referenced by connection_pool().

created_count()

std::size_t sqlite::v2::connection_pool::created_count

(

)

const

Number of connections that have been created so far.

idle_count()

std::size_t sqlite::v2::connection_pool::idle_count

(

)

const

Number of idle connections currently waiting in the pool.

make_factory()

connection_factory sqlite::v2::connection_pool::make_factory ( std::string db, open_mode mode = open_mode::open_or_create, filesystem_adapter_ptr fs = {} )

static

Helper that captures the parameters for creating connections inside a pool factory.

References sqlite::v2::open_or_create.

release()

void sqlite::v2::connection_pool::release ( std::shared_ptr< connection > conn )

private

Friends And Related Symbol Documentation

lease

friend class lease

friend

Definition at line 111 of file connection_pool.hpp.

Member Data Documentation

capacity_

std::size_t sqlite::v2::connection_pool::capacity_

private

Definition at line 115 of file connection_pool.hpp.

created_

std::size_t sqlite::v2::connection_pool::created_ = 0

private

Definition at line 116 of file connection_pool.hpp.

cv_

std::condition_variable sqlite::v2::connection_pool::cv_

private

Definition at line 118 of file connection_pool.hpp.

factory_

connection_factory sqlite::v2::connection_pool::factory_

private

Definition at line 114 of file connection_pool.hpp.

idle_

std::vector<std::shared_ptr<connection> > sqlite::v2::connection_pool::idle_

private

Definition at line 119 of file connection_pool.hpp.

mutex_

std::mutex sqlite::v2::connection_pool::mutex_

mutableprivate

Definition at line 117 of file connection_pool.hpp.

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

• include/sqlite/connection_pool.hpp