| // |
| // detail/io_control.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2016 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 |