Chris@16: //
Chris@16: // detail/descriptor_ops.hpp
Chris@16: // ~~~~~~~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP
Chris@16: #define BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/config.hpp>
Chris@16: 
Chris@16: #if !defined(BOOST_ASIO_WINDOWS) \
Chris@16:   && !defined(BOOST_ASIO_WINDOWS_RUNTIME) \
Chris@16:   && !defined(__CYGWIN__)
Chris@16: 
Chris@16: #include <cstddef>
Chris@16: #include <boost/system/error_code.hpp>
Chris@16: #include <boost/asio/detail/socket_types.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: namespace detail {
Chris@16: namespace descriptor_ops {
Chris@16: 
Chris@16: // Descriptor state bits.
Chris@16: enum
Chris@16: {
Chris@16:   // The user wants a non-blocking descriptor.
Chris@16:   user_set_non_blocking = 1,
Chris@16: 
Chris@16:   // The descriptor has been set non-blocking.
Chris@16:   internal_non_blocking = 2,
Chris@16: 
Chris@16:   // Helper "state" used to determine whether the descriptor is non-blocking.
Chris@16:   non_blocking = user_set_non_blocking | internal_non_blocking,
Chris@16: 
Chris@16:   // The descriptor may have been dup()-ed.
Chris@16:   possible_dup = 4
Chris@16: };
Chris@16: 
Chris@16: typedef unsigned char state_type;
Chris@16: 
Chris@16: template <typename ReturnType>
Chris@16: inline ReturnType error_wrapper(ReturnType return_value,
Chris@16:     boost::system::error_code& ec)
Chris@16: {
Chris@16:   ec = boost::system::error_code(errno,
Chris@16:       boost::asio::error::get_system_category());
Chris@16:   return return_value;
Chris@16: }
Chris@16: 
Chris@16: BOOST_ASIO_DECL int open(const char* path, int flags,
Chris@16:     boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL int close(int d, state_type& state,
Chris@16:     boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL bool set_user_non_blocking(int d,
Chris@16:     state_type& state, bool value, boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL bool set_internal_non_blocking(int d,
Chris@16:     state_type& state, bool value, boost::system::error_code& ec);
Chris@16: 
Chris@16: typedef iovec buf;
Chris@16: 
Chris@16: BOOST_ASIO_DECL std::size_t sync_read(int d, state_type state, buf* bufs,
Chris@16:     std::size_t count, bool all_empty, boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL bool non_blocking_read(int d, buf* bufs, std::size_t count,
Chris@16:     boost::system::error_code& ec, std::size_t& bytes_transferred);
Chris@16: 
Chris@16: BOOST_ASIO_DECL std::size_t sync_write(int d, state_type state,
Chris@16:     const buf* bufs, std::size_t count, bool all_empty,
Chris@16:     boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL bool non_blocking_write(int d,
Chris@16:     const buf* bufs, std::size_t count,
Chris@16:     boost::system::error_code& ec, std::size_t& bytes_transferred);
Chris@16: 
Chris@16: BOOST_ASIO_DECL int ioctl(int d, state_type& state, long cmd,
Chris@16:     ioctl_arg_type* arg, boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL int fcntl(int d, int cmd, boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL int fcntl(int d, int cmd,
Chris@16:     long arg, boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL int poll_read(int d,
Chris@16:     state_type state, boost::system::error_code& ec);
Chris@16: 
Chris@16: BOOST_ASIO_DECL int poll_write(int d,
Chris@16:     state_type state, boost::system::error_code& ec);
Chris@16: 
Chris@16: } // namespace descriptor_ops
Chris@16: } // namespace detail
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HEADER_ONLY)
Chris@16: # include <boost/asio/detail/impl/descriptor_ops.ipp>
Chris@16: #endif // defined(BOOST_ASIO_HEADER_ONLY)
Chris@16: 
Chris@16: #endif // !defined(BOOST_ASIO_WINDOWS)
Chris@16:        //   && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
Chris@16:        //   && !defined(__CYGWIN__)
Chris@16: 
Chris@16: #endif // BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP