85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
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//
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// detail/io_control.hpp
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// ~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2021 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_CONTROL_HPP
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#define ASIO_DETAIL_IO_CONTROL_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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#include <cstddef>
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#include "asio/detail/socket_types.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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namespace io_control {
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// I/O control command for getting number of bytes available.
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class bytes_readable
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{
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public:
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// Default constructor.
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bytes_readable()
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: value_(0)
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{
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}
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// Construct with a specific command value.
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bytes_readable(std::size_t value)
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: value_(static_cast<detail::ioctl_arg_type>(value))
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{
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}
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// Get the name of the IO control command.
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int name() const
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{
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return static_cast<int>(ASIO_OS_DEF(FIONREAD));
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}
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// Set the value of the I/O control command.
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void set(std::size_t value)
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{
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value_ = static_cast<detail::ioctl_arg_type>(value);
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}
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// Get the current value of the I/O control command.
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std::size_t get() const
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{
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return static_cast<std::size_t>(value_);
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}
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// Get the address of the command data.
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detail::ioctl_arg_type* data()
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{
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return &value_;
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}
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// Get the address of the command data.
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const detail::ioctl_arg_type* data() const
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{
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return &value_;
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}
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private:
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detail::ioctl_arg_type value_;
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};
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} // namespace io_control
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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 // ASIO_DETAIL_IO_CONTROL_HPP
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