request_state_impl_basic Class Reference [File implementations]

Basic state implemenatition for most request implementations. More...

#include <request_state_impl_basic.h>

Inheritance diagram for request_state_impl_basic:

Collaboration diagram for request_state_impl_basic:

List of all members.

Public Member Functions
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 request The request is cancelled unless already being processed. However, cancellation cannot be guaranteed. Cancelled requests must still be waited for in order to ensure correct operation.
Protected Types
enum	request_state { OP = 0, DONE = 1, READY2DIE = 2 }
Protected Member Functions
	request_state_impl_basic (const completion_handler &on_cmpl, file *f, void *buf, offset_type off, size_type b, request_type t)
Protected Attributes
state< request_state >	_state

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Detailed Description

Basic state implemenatition for most request implementations.

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Member Enumeration Documentation

enum request_state_impl_basic::request_state [protected]

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

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Member Function Documentation

bool request_state_impl_basic::cancel

(

)

[virtual]

Cancel request The request is cancelled unless already being processed. However, cancellation cannot be guaranteed. Cancelled requests must still be waited for in order to ensure correct operation.

Returns:

true iff the request was cancelled successfully

Implements request_base.

References file::get_queue_id().

bool request_state_impl_basic::poll

(

)

[virtual]

Polls the status of the request.

Returns:

true if request is completed, otherwise false

Implements request_base.

References request::check_errors().

void request_state_impl_basic::wait

(

bool

measure_time = true

)

[virtual]

Suspends calling thread until completion of the request.

Implements request_base.

References request::check_errors().

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

• request_state_impl_basic.h
• request_state_impl_basic.cpp