request Class Reference [I/O primitives layer]

Basic properties of a request. More...

#include <request.h>

Inheritance diagram for request:

Collaboration diagram for request:

List of all members.

Public Member Functions
	request (const completion_handler &on_compl, file *file__, void *buffer_, offset_type offset_, size_type bytes_, request_type type_)
file *	get_file () const
void *	get_buffer () const
offset_type	get_offset () const
size_type	get_size () const
request_type	get_type () const
void	check_alignment () const
virtual std::ostream &	print (std::ostream &out) const
void	error_occured (const char *msg)
	Inform the request object that an error occurred during the I/O execution.
void	error_occured (const std::string &msg)
	Inform the request object that an error occurred during the I/O execution.
void	check_errors () throw (stxxl::io_error)
	Rises an exception if there were error with the I/O.
Protected Member Functions
void	completed ()
int	nref ()
void	check_nref (bool after=false)
Protected Attributes
completion_handler	on_complete
int	ref_cnt
compat_unique_ptr < stxxl::io_error >::result	error
mutex	ref_cnt_mutex
file *	file_
void *	buffer
offset_type	offset
size_type	bytes
request_type	type
Friends
int	wait_any (request_ptr req_array[], int count)
	Suspends calling thread until any of requests is completed.
template<class request_iterator_ >
request_iterator_	wait_any (request_iterator_ reqs_begin, request_iterator_ reqs_end)
	Suspends calling thread until any of requests is completed.

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Detailed Description

Basic properties of a request.

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Member Function Documentation

void request::check_errors

(

)

throw (stxxl::io_error) [inline]

Rises an exception if there were error with the I/O.

Referenced by request_state_impl_basic::poll(), and request_state_impl_basic::wait().

void request::error_occured

(

const std::string &

msg

)

[inline]

Inform the request object that an error occurred during the I/O execution.

void request::error_occured

(

const char *

msg

)

[inline]

Inform the request object that an error occurred during the I/O execution.

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Friends And Related Function Documentation

int wait_any	(	request_ptr	req_array[],
		int	count
	)			[friend]

Suspends calling thread until any of requests is completed.

Parameters:

	req_array	array of request_ptr objects
	count	size of req_array

Returns:

index in req_array pointing to the first completed request

template<class request_iterator_ >

request_iterator_ wait_any	(	request_iterator_	reqs_begin,
		request_iterator_	reqs_end
	)			[friend]

Suspends calling thread until any of requests is completed.

Parameters:

	reqs_begin	begin of request sequence to wait for
	reqs_end	end of request sequence to wait for

Returns:

index in req_array pointing to the first completed request

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

• request.h
• request.cpp