stxxl::request_queue_impl_qwqr Class Reference

Detailed Description

Implementation of a local request queue having two queues, one for read and one for write requests, thus having two threads. This is the default implementation.

Definition at line 32 of file request_queue_impl_qwqr.h.

Inheritance diagram for stxxl::request_queue_impl_qwqr:

Collaboration diagram for stxxl::request_queue_impl_qwqr:

Public Member Functions
	request_queue_impl_qwqr (int n=1)
	~request_queue_impl_qwqr ()
void	add_request (request_ptr &req)
bool	cancel_request (request_ptr &req)
void	set_priority_op (priority_op op)
Public Member Functions inherited from stxxl::request_queue
virtual	~request_queue ()
virtual void	set_priority_op (priority_op p)

Private Types
typedef std::list< request_ptr >	queue_type
typedef request_queue_impl_qwqr	self

Static Private Member Functions
static void *	worker (void *arg)

Private Attributes
mutex	m_read_mutex
queue_type	m_read_queue
semaphore	m_sem
thread_type	m_thread
state< thread_state >	m_thread_state
mutex	m_write_mutex
queue_type	m_write_queue

Static Private Attributes
static const priority_op	m_priority_op = WRITE

Additional Inherited Members
Public Types inherited from stxxl::request_queue
enum	priority_op { READ, WRITE, NONE }
Protected Types inherited from stxxl::request_queue_impl_worker
enum	thread_state { NOT_RUNNING, RUNNING, TERMINATING, TERMINATED }
typedef pthread_t	thread_type
Protected Member Functions inherited from stxxl::request_queue_impl_worker
void	start_thread (void *(*worker)(void *), void *arg, thread_type &t, state< thread_state > &s)
void	stop_thread (thread_type &t, state< thread_state > &s, semaphore &sem)

Member Typedef Documentation

typedef std::list<request_ptr> stxxl::request_queue_impl_qwqr::queue_type

private

Definition at line 36 of file request_queue_impl_qwqr.h.

typedef request_queue_impl_qwqr stxxl::request_queue_impl_qwqr::self

private

Definition at line 35 of file request_queue_impl_qwqr.h.

Constructor & Destructor Documentation

stxxl::request_queue_impl_qwqr::request_queue_impl_qwqr

(

int

n = 1

)

Definition at line 45 of file request_queue_impl_qwqr.cpp.

References m_thread, m_thread_state, stxxl::request_queue_impl_worker::start_thread(), stxxl::STXXL_UNUSED(), and worker().

stxxl::request_queue_impl_qwqr::~request_queue_impl_qwqr

(

)

Definition at line 137 of file request_queue_impl_qwqr.cpp.

References m_sem, m_thread, m_thread_state, and stxxl::request_queue_impl_worker::stop_thread().

Member Function Documentation

void stxxl::request_queue_impl_qwqr::add_request ( request_ptr &  req )

virtual

Implements stxxl::request_queue.

Definition at line 52 of file request_queue_impl_qwqr.cpp.

References _STXXL_FORCE_SEQUENTIAL, stxxl::counting_ptr< Type >::empty(), stxxl::counting_ptr< Type >::get(), stxxl::request::get_type(), m_read_mutex, m_read_queue, m_sem, m_thread_state, m_write_mutex, m_write_queue, stxxl::request_interface::READ, stxxl::request_queue_impl_worker::RUNNING, STXXL_ERRMSG, and STXXL_THROW_INVALID_ARGUMENT.

bool stxxl::request_queue_impl_qwqr::cancel_request ( request_ptr &  req )

virtual

Implements stxxl::request_queue.

Definition at line 97 of file request_queue_impl_qwqr.cpp.

References _STXXL_FORCE_SEQUENTIAL, stxxl::counting_ptr< Type >::empty(), stxxl::find(), stxxl::counting_ptr< Type >::get(), stxxl::request::get_type(), m_read_mutex, m_read_queue, m_sem, m_thread_state, m_write_mutex, m_write_queue, stxxl::request_interface::READ, stxxl::request_queue_impl_worker::RUNNING, STXXL_ERRMSG, and STXXL_THROW_INVALID_ARGUMENT.

void stxxl::request_queue_impl_qwqr::set_priority_op ( priority_op  op )

inline

Definition at line 59 of file request_queue_impl_qwqr.h.

References stxxl::STXXL_UNUSED().

void * stxxl::request_queue_impl_qwqr::worker ( void *  arg )

staticprivate

Definition at line 142 of file request_queue_impl_qwqr.cpp.

References stxxl::counting_ptr< Type >::get(), stxxl::atomic_counted_object::get_reference_count(), m_sem, stxxl::request_queue::NONE, stxxl::request_queue::READ, STXXL_VERBOSE2, stxxl::request_queue_impl_worker::TERMINATED, stxxl::request_queue_impl_worker::TERMINATING, stxxl::scoped_mutex_lock::unlock(), and stxxl::request_queue::WRITE.

Referenced by request_queue_impl_qwqr().

Member Data Documentation

const priority_op stxxl::request_queue_impl_qwqr::m_priority_op = WRITE

staticprivate

Definition at line 47 of file request_queue_impl_qwqr.h.

mutex stxxl::request_queue_impl_qwqr::m_read_mutex

private

Definition at line 39 of file request_queue_impl_qwqr.h.

Referenced by add_request(), and cancel_request().

queue_type stxxl::request_queue_impl_qwqr::m_read_queue

private

Definition at line 41 of file request_queue_impl_qwqr.h.

Referenced by add_request(), and cancel_request().

semaphore stxxl::request_queue_impl_qwqr::m_sem

private

Definition at line 45 of file request_queue_impl_qwqr.h.

Referenced by add_request(), cancel_request(), worker(), and ~request_queue_impl_qwqr().

thread_type stxxl::request_queue_impl_qwqr::m_thread

private

Definition at line 44 of file request_queue_impl_qwqr.h.

Referenced by request_queue_impl_qwqr(), and ~request_queue_impl_qwqr().

state<thread_state> stxxl::request_queue_impl_qwqr::m_thread_state

private

Definition at line 43 of file request_queue_impl_qwqr.h.

Referenced by add_request(), cancel_request(), request_queue_impl_qwqr(), and ~request_queue_impl_qwqr().

mutex stxxl::request_queue_impl_qwqr::m_write_mutex

private

Definition at line 38 of file request_queue_impl_qwqr.h.

Referenced by add_request(), and cancel_request().

queue_type stxxl::request_queue_impl_qwqr::m_write_queue

private

Definition at line 40 of file request_queue_impl_qwqr.h.

Referenced by add_request(), and cancel_request().

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

• include/stxxl/bits/io/request_queue_impl_qwqr.h
• lib/io/request_queue_impl_qwqr.cpp