A synchronised i/o operation state. More...

#include "byte_io_multiplexer.hpp"

Inheritance diagram for llfio_v2_xxx::byte_io_multiplexer::_synchronised_io_operation_state:

Public Member Functions
	_synchronised_io_operation_state (const _synchronised_io_operation_state &)=delete

virtual io_operation_state_type	current_state () const noexcept override
	Used to retrieve the current state of the i/o operation.

virtual io_result< buffers_type >	get_completed_read () &&noexcept override
	After an i/o operation has finished, can be used to retrieve the result if the visitor did not.

virtual io_result< const_buffers_type >	get_completed_write_or_barrier () &&noexcept override
	After an i/o operation has finished, can be used to retrieve the result if the visitor did not.

virtual void *	invoke (function_ptr< void *(io_operation_state_type)> c) const noexcept override
	Invoke the callable with the per-i/o state lock held, if any.

virtual void	read_initiated () override

virtual void	read_completed (io_result< buffers_type > &&res) override

virtual void	read_finished () override

virtual void	write_initiated () override

virtual void	write_completed (io_result< const_buffers_type > &&res) override

virtual void	barrier_initiated () override

virtual void	barrier_completed (io_result< const_buffers_type > &&res) override

virtual void	write_or_barrier_finished () override

constexpr	_unsynchronised_io_operation_state ()
	Construct an unknown state.

	_unsynchronised_io_operation_state (byte_io_handle _h, io_operation_state_visitor _v, registered_buffer_type &&b, deadline d, io_request< buffers_type > reqs)
	Construct a read operation state.

	_unsynchronised_io_operation_state (byte_io_handle _h, io_operation_state_visitor _v, registered_buffer_type &&b, deadline d, io_request< const_buffers_type > reqs)
	Construct a write operation state.

	_unsynchronised_io_operation_state (byte_io_handle _h, io_operation_state_visitor _v, registered_buffer_type &&b, deadline d, io_request< const_buffers_type > reqs, barrier_kind kind)
	Construct a barrier operation state.

	_unsynchronised_io_operation_state (io_result< buffers_type > &&res)
	Construct a finished read operation state.

	_unsynchronised_io_operation_state (io_result< const_buffers_type > &&res)
	Construct a finished write or barrier operation state.

	_unsynchronised_io_operation_state (const _unsynchronised_io_operation_state &)=delete

	_unsynchronised_io_operation_state (_unsynchronised_io_operation_state &&o) noexcept

void	clear_storage ()
	Used to clear the storage in this operation state.

virtual io_operation_state *	relocate_to (byte *to_) noexcept override
	Relocate the state to new storage, clearing the original state. Terminates the process if the state is in use.

void	_read_initiated (lock_guard &g)

void	_read_completed (lock_guard &g, io_result< buffers_type > &&res)

void	_read_finished (lock_guard &g)

void	_write_initiated (lock_guard &g)

void	_write_completed (lock_guard &g, io_result< const_buffers_type > &&res)

void	_barrier_initiated (lock_guard &g)

void	_barrier_completed (lock_guard &g, io_result< const_buffers_type > &&res)

void	_write_or_barrier_finished (lock_guard &g)

Public Attributes
spinlock	_lock_

io_operation_state_type	state {io_operation_state_type::unknown}
	The current lifecycle state of this i/o operation.

union llfio_v2_xxx::byte_io_multiplexer::_unsynchronised_io_operation_state::payload_t	payload

byte_io_handle *	h {nullptr}
	The i/o handle the i/o operation is upon.

io_operation_state_visitor *	visitor {nullptr}
	The state visitor supplied when the operation was initialised.

Protected Member Functions
	_synchronised_io_operation_state (_synchronised_io_operation_state &&)=default

virtual void	_lock () noexcept override

virtual void	_unlock () noexcept override

Detailed Description

A synchronised i/o operation state.

This implementation uses an atomic to synchronise access during the *_completed(), *_finished() and current_state() member functions, thus making it suitable for use across threads.

The documentation for this struct was generated from the following file:

include/llfio/v2.0/byte_io_multiplexer.hpp

Public Member Functions

Public Attributes

Protected Member Functions

Detailed Description