Detailed Description

Request which serves an I/O by calling the synchronous routine of the file.

Definition at line 25 of file serving_request.h.

Inheritance diagram for stxxl::serving_request:

Collaboration diagram for stxxl::serving_request:

Public Member Functions
	serving_request (const completion_handler &on_cmpl, file f, void buf, offset_type off, size_type b, request_type t)

const char *	io_type () const
	Identifies the type of I/O implementation. More...

Public Member Functions inherited from stxxl::request_with_state
virtual	~request_with_state ()

bool	cancel ()
	Cancel a request. More...

bool	poll ()
	Polls the status of the request. More...

void	wait (bool measure_time=true)
	Suspends calling thread until completion of the request. More...

Public Member Functions inherited from stxxl::request_with_waiters
	request_with_waiters (const completion_handler &on_cmpl, file f, void buf, offset_type off, size_type b, request_type t)

Public Member Functions inherited from stxxl::request
	request (const completion_handler &on_compl, file file, void buffer, offset_type offset, size_type bytes, request_type type)

virtual	~request ()

void	check_alignment () const

void	check_errors ()
	Rises an exception if there were error with the I/O. More...

void	error_occured (const char *msg)
	Inform the request object that an error occurred during the I/O execution. More...

void	error_occured (const std::string &msg)
	Inform the request object that an error occurred during the I/O execution. More...

void *	get_buffer () const

file *	get_file () const

offset_type	get_offset () const

size_type	get_size () const

request_type	get_type () const

std::ostream &	print (std::ostream &out) const
	Dumps properties of a request. More...

Public Member Functions inherited from stxxl::request_interface
virtual	~request_interface ()

Public Member Functions inherited from stxxl::atomic_counted_object
	atomic_counted_object ()
	new objects have zero reference count More...

	atomic_counted_object (const atomic_counted_object &)
	coping still creates a new object with zero reference count More...

	~atomic_counted_object ()

bool	dec_reference () const
	Call whenever resetting (i.e. overwriting) a pointer to the object. IMPORTANT: In case of self-assignment, call AFTER inc_reference(). More...

unsigned_type	get_reference_count () const
	Return the number of references to this object (for debugging) More...

void	inc_reference () const
	Call whenever setting a pointer to the object. More...

atomic_counted_object &	operator= (const atomic_counted_object &)
	assignment operator, leaves pointers unchanged More...

bool	unique () const
	Test if the counted_object is referenced by only one counting_ptr. More...

Protected Member Functions
virtual void	serve ()

Protected Member Functions inherited from stxxl::request_with_state
	request_with_state (const completion_handler &on_cmpl, file f, void buf, offset_type off, size_type b, request_type t)

void	completed (bool canceled)

Protected Member Functions inherited from stxxl::request_with_waiters
bool	add_waiter (onoff_switch *sw)

void	delete_waiter (onoff_switch *sw)

void	notify_waiters ()

size_t	num_waiters ()
	returns number of waiters More...

Protected Member Functions inherited from stxxl::request
void	check_nref (bool after=false)

Additional Inherited Members
Public Types inherited from stxxl::request_interface
typedef stxxl::external_size_type	offset_type

enum	request_type { READ, WRITE }

typedef stxxl::internal_size_type	size_type

Protected Types inherited from stxxl::request_with_state
enum	request_state { OP = 0, DONE = 1, READY2DIE = 2 }
	states of request OP - operating, DONE - request served, READY2DIE - can be destroyed More...

Protected Attributes inherited from stxxl::request_with_state
state< request_state >	m_state

Protected Attributes inherited from stxxl::request
void *	m_buffer

size_type	m_bytes

compat_unique_ptr < stxxl::io_error >::result	m_error

file *	m_file

offset_type	m_offset

completion_handler	m_on_complete

request_type	m_type