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- //
- // detail/io_control.hpp
- // ~~~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
- //
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
-
- #ifndef ASIO_DETAIL_IO_CONTROL_HPP
- #define ASIO_DETAIL_IO_CONTROL_HPP
-
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
- #include "asio/detail/config.hpp"
- #include <cstddef>
- #include "asio/detail/socket_types.hpp"
-
- #include "asio/detail/push_options.hpp"
-
- namespace asio {
- namespace detail {
- namespace io_control {
-
- // I/O control command for getting number of bytes available.
- class bytes_readable
- {
- public:
- // Default constructor.
- bytes_readable()
- : value_(0)
- {
- }
-
- // Construct with a specific command value.
- bytes_readable(std::size_t value)
- : value_(static_cast<detail::ioctl_arg_type>(value))
- {
- }
-
- // Get the name of the IO control command.
- int name() const
- {
- return static_cast<int>(ASIO_OS_DEF(FIONREAD));
- }
-
- // Set the value of the I/O control command.
- void set(std::size_t value)
- {
- value_ = static_cast<detail::ioctl_arg_type>(value);
- }
-
- // Get the current value of the I/O control command.
- std::size_t get() const
- {
- return static_cast<std::size_t>(value_);
- }
-
- // Get the address of the command data.
- detail::ioctl_arg_type* data()
- {
- return &value_;
- }
-
- // Get the address of the command data.
- const detail::ioctl_arg_type* data() const
- {
- return &value_;
- }
-
- private:
- detail::ioctl_arg_type value_;
- };
-
- } // namespace io_control
- } // namespace detail
- } // namespace asio
-
- #include "asio/detail/pop_options.hpp"
-
- #endif // ASIO_DETAIL_IO_CONTROL_HPP
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