Request with completion state. More...

#include <request_with_state.h>

Inheritance diagram for stxxl::request_with_state:

Collaboration diagram for stxxl::request_with_state:

Public Member Functions
virtual	~request_with_state ()
void	wait (bool measure_time=true)
	Suspends calling thread until completion of the request.
bool	poll ()
	Polls the status of the request.
bool	cancel ()
	Cancel a request.
Protected Types
enum	request_state { OP = 0, DONE = 1, READY2DIE = 2 }
Protected Member Functions
	request_with_state (const completion_handler &on_cmpl, file f, void buf, offset_type off, size_type b, request_type t)
Protected Attributes
state< request_state >	_state

Detailed Description

Request with completion state.

Definition at line 28 of file request_with_state.h.

Member Enumeration Documentation

enum stxxl::request_with_state::request_state [protected]

states of request OP - operating, DONE - request served, READY2DIE - can be destroyed

Enumerator:

OP
DONE
READY2DIE

Definition at line 33 of file request_with_state.h.

Constructor & Destructor Documentation

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
	)		`[inline, protected]`

Definition at line 38 of file request_with_state.h.

stxxl::request_with_state::~request_with_state ( ) [virtual]

Definition at line 22 of file request_with_state.cpp.

Member Function Documentation

bool stxxl::request_with_state::cancel ( ) [virtual]

Cancel a request.

The request is canceled unless already being processed. However, cancelation cannot be guaranteed. Canceled requests must still be waited for in order to ensure correct operation. If the request was canceled successfully, the completion handler will not be called.