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+//
+// detail/io_control.hpp
+// ~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 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 BOOST_ASIO_DETAIL_IO_CONTROL_HPP
+#define BOOST_ASIO_DETAIL_IO_CONTROL_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/config.hpp>
+#include <cstddef>
+#include <boost/config.hpp>
+#include <boost/asio/detail/socket_types.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+namespace io_control {
+
+// IO control command for non-blocking I/O.
+class non_blocking_io
+{
+public:
+ // Default constructor.
+ non_blocking_io()
+ : value_(0)
+ {
+ }
+
+ // Construct with a specific command value.
+ non_blocking_io(bool value)
+ : value_(value ? 1 : 0)
+ {
+ }
+
+ // Get the name of the IO control command.
+ int name() const
+ {
+ return static_cast<int>(FIONBIO);
+ }
+
+ // Set the value of the I/O control command.
+ void set(bool value)
+ {
+ value_ = value ? 1 : 0;
+ }
+
+ // Get the current value of the I/O control command.
+ bool get() const
+ {
+ return value_ != 0;
+ }
+
+ // 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_;
+};
+
+// 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>(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
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_DETAIL_IO_CONTROL_HPP