Detailed Description

Request with basic properties like file and offset.

Definition at line 39 of file request.h.

Inheritance diagram for stxxl::request:

Collaboration diagram for stxxl::request:

Public Member Functions
	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 () throw (stxxl::io_error)
	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 ()

virtual bool	add_waiter (onoff_switch *sw)=0

virtual bool	cancel ()=0
	Cancel a request. More...

virtual void	delete_waiter (onoff_switch *sw)=0

virtual const char *	io_type () const =0
	Identifies the type of I/O implementation. More...

virtual bool	poll ()=0
	Polls the status of the request. More...

virtual void	serve ()=0

virtual void	wait (bool measure_time=true)=0
	Suspends calling thread until completion of the request. More...

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
void	check_nref (bool after=false)

void	completed ()

Protected Member Functions inherited from stxxl::request_interface
virtual void	notify_waiters ()=0

Protected Attributes
void *	buffer

size_type	bytes

compat_unique_ptr < stxxl::io_error >::result	error

file *	file_

offset_type	offset

completion_handler	on_complete

request_type	type

Private Member Functions
void	check_nref_failed (bool after)

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

Constructor & Destructor Documentation

stxxl::request::request	(	const completion_handler &	on_compl,
		file *	file__,
		void *	buffer_,
		offset_type	offset_,
		size_type	bytes_,
		request_type	type_
	)