stxxl::request_queue_impl_1q Class Reference

Detailed Description

Implementation of a local request queue having only one queue for both read and write requests, thus having only one thread.

Definition at line 30 of file request_queue_impl_1q.h.

Inheritance diagram for stxxl::request_queue_impl_1q:

Collaboration diagram for stxxl::request_queue_impl_1q:

Public Member Functions
	request_queue_impl_1q (int n=1)
	~request_queue_impl_1q ()
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 ()

Private Types
typedef std::list< request_ptr >	queue_type
typedef request_queue_impl_1q	self

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

Private Attributes
queue_type	m_queue
mutex	m_queue_mutex
semaphore	m_sem
thread_type	m_thread
state< thread_state >	m_thread_state

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_1q::queue_type

private

Definition at line 34 of file request_queue_impl_1q.h.

typedef request_queue_impl_1q stxxl::request_queue_impl_1q::self

private

Definition at line 33 of file request_queue_impl_1q.h.

Constructor & Destructor Documentation

stxxl::request_queue_impl_1q::request_queue_impl_1q

(

int

n = 1

)

Definition at line 46 of file request_queue_impl_1q.cpp.

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

stxxl::request_queue_impl_1q::~request_queue_impl_1q

(

)

Definition at line 106 of file request_queue_impl_1q.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_1q::add_request ( request_ptr &  req )

virtual

Implements stxxl::request_queue.

Definition at line 53 of file request_queue_impl_1q.cpp.

References _STXXL_FORCE_SEQUENTIAL, stxxl::counting_ptr< Type >::empty(), stxxl::counting_ptr< Type >::get(), m_queue, m_queue_mutex, m_sem, m_thread_state, stxxl::request_queue_impl_worker::RUNNING, STXXL_ERRMSG, and STXXL_THROW_INVALID_ARGUMENT.

bool stxxl::request_queue_impl_1q::cancel_request ( request_ptr &  req )

virtual

Implements stxxl::request_queue.

Definition at line 79 of file request_queue_impl_1q.cpp.

References _STXXL_FORCE_SEQUENTIAL, stxxl::counting_ptr< Type >::empty(), stxxl::find(), stxxl::counting_ptr< Type >::get(), m_queue, m_queue_mutex, m_sem, m_thread_state, stxxl::request_queue_impl_worker::RUNNING, STXXL_ERRMSG, and STXXL_THROW_INVALID_ARGUMENT.

void stxxl::request_queue_impl_1q::set_priority_op ( priority_op  op )

inlinevirtual

Reimplemented from stxxl::request_queue.

Definition at line 55 of file request_queue_impl_1q.h.

References stxxl::STXXL_UNUSED().

void * stxxl::request_queue_impl_1q::worker ( void *  arg )

staticprivate

Definition at line 111 of file request_queue_impl_1q.cpp.

References stxxl::counting_ptr< Type >::get(), m_sem, stxxl::request_queue_impl_worker::TERMINATED, stxxl::request_queue_impl_worker::TERMINATING, and stxxl::scoped_mutex_lock::unlock().

Referenced by request_queue_impl_1q().

Member Data Documentation

const priority_op stxxl::request_queue_impl_1q::m_priority_op = WRITE

staticprivate

Definition at line 43 of file request_queue_impl_1q.h.

queue_type stxxl::request_queue_impl_1q::m_queue

private

Definition at line 37 of file request_queue_impl_1q.h.

Referenced by add_request(), and cancel_request().

mutex stxxl::request_queue_impl_1q::m_queue_mutex

private

Definition at line 36 of file request_queue_impl_1q.h.

Referenced by add_request(), and cancel_request().

semaphore stxxl::request_queue_impl_1q::m_sem

private

Definition at line 41 of file request_queue_impl_1q.h.

Referenced by add_request(), cancel_request(), worker(), and ~request_queue_impl_1q().

thread_type stxxl::request_queue_impl_1q::m_thread

private

Definition at line 40 of file request_queue_impl_1q.h.

Referenced by request_queue_impl_1q(), and ~request_queue_impl_1q().

state<thread_state> stxxl::request_queue_impl_1q::m_thread_state

private

Definition at line 39 of file request_queue_impl_1q.h.

Referenced by add_request(), cancel_request(), request_queue_impl_1q(), and ~request_queue_impl_1q().

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

• include/stxxl/bits/io/request_queue_impl_1q.h
• lib/io/request_queue_impl_1q.cpp