85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
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//
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// detail/io_uring_operation.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_IO_URING_OPERATION_HPP
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#define ASIO_DETAIL_IO_URING_OPERATION_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/config.hpp"
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#if defined(ASIO_HAS_IO_URING)
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#include <liburing.h>
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#include "asio/detail/cstdint.hpp"
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#include "asio/detail/operation.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace detail {
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class io_uring_operation
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: public operation
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{
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public:
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// The error code to be passed to the completion handler.
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asio::error_code ec_;
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// The number of bytes transferred, to be passed to the completion handler.
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std::size_t bytes_transferred_;
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// The operation key used for targeted cancellation.
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void* cancellation_key_;
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// Prepare the operation.
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void prepare(::io_uring_sqe* sqe)
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{
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return prepare_func_(this, sqe);
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}
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// Perform actions associated with the operation. Returns true when complete.
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bool perform(bool after_completion)
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{
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return perform_func_(this, after_completion);
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}
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protected:
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typedef void (*prepare_func_type)(io_uring_operation*, ::io_uring_sqe*);
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typedef bool (*perform_func_type)(io_uring_operation*, bool);
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io_uring_operation(const asio::error_code& success_ec,
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prepare_func_type prepare_func, perform_func_type perform_func,
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func_type complete_func)
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: operation(complete_func),
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ec_(success_ec),
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bytes_transferred_(0),
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cancellation_key_(0),
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prepare_func_(prepare_func),
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perform_func_(perform_func)
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{
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}
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private:
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prepare_func_type prepare_func_;
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perform_func_type perform_func_;
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};
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} // namespace detail
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // defined(ASIO_HAS_IO_URING)
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#endif // ASIO_DETAIL_IO_URING_OPERATION_HPP
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