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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) 2003-2015 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 BOOST_ASIO_DETAIL_IO_CONTROL_HPP
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#define BOOST_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 <boost/asio/detail/config.hpp>
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#include <cstddef>
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#include <boost/asio/detail/socket_types.hpp>
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#include <boost/asio/detail/push_options.hpp>
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namespace boost {
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namespace asio {
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namespace detail {
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namespace io_control {
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// IO control command for non-blocking I/O.
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class non_blocking_io
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{
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public:
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  // Default constructor.
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  non_blocking_io()
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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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  non_blocking_io(bool value)
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    : value_(value ? 1 : 0)
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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>(BOOST_ASIO_OS_DEF(FIONBIO));
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  }
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  // Set the value of the I/O control command.
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  void set(bool value)
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  {
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    value_ = value ? 1 : 0;
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  }
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  // Get the current value of the I/O control command.
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  bool get() const
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  {
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    return value_ != 0;
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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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// 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>(BOOST_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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} // namespace boost
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#include <boost/asio/detail/pop_options.hpp>
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#endif // BOOST_ASIO_DETAIL_IO_CONTROL_HPP