// // detail/descriptor_ops.hpp // ~~~~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2010 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_DESCRIPTOR_OPS_HPP #define BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/config.hpp> #if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__) #include <cstddef> #include <boost/system/error_code.hpp> #include <boost/asio/detail/socket_types.hpp> #include <boost/asio/detail/push_options.hpp> namespace boost { namespace asio { namespace detail { namespace descriptor_ops { // Descriptor state bits. enum { // The user wants a non-blocking descriptor. user_set_non_blocking = 1, // The descriptor has been set non-blocking. internal_non_blocking = 2, // Helper "state" used to determine whether the descriptor is non-blocking. non_blocking = user_set_non_blocking | internal_non_blocking }; typedef unsigned char state_type; template <typename ReturnType> inline ReturnType error_wrapper(ReturnType return_value, boost::system::error_code& ec) { ec = boost::system::error_code(errno, boost::asio::error::get_system_category()); return return_value; } BOOST_ASIO_DECL int open(const char* path, int flags, boost::system::error_code& ec); BOOST_ASIO_DECL int close(int d, state_type& state, boost::system::error_code& ec); BOOST_ASIO_DECL bool set_internal_non_blocking(int d, state_type& state, boost::system::error_code& ec); typedef iovec buf; BOOST_ASIO_DECL std::size_t sync_read(int d, state_type state, buf* bufs, std::size_t count, bool all_empty, boost::system::error_code& ec); BOOST_ASIO_DECL bool non_blocking_read(int d, buf* bufs, std::size_t count, boost::system::error_code& ec, std::size_t& bytes_transferred); BOOST_ASIO_DECL std::size_t sync_write(int d, state_type state, const buf* bufs, std::size_t count, bool all_empty, boost::system::error_code& ec); BOOST_ASIO_DECL bool non_blocking_write(int d, const buf* bufs, std::size_t count, boost::system::error_code& ec, std::size_t& bytes_transferred); BOOST_ASIO_DECL int ioctl(int d, state_type& state, long cmd, ioctl_arg_type* arg, boost::system::error_code& ec); BOOST_ASIO_DECL int fcntl(int d, long cmd, boost::system::error_code& ec); BOOST_ASIO_DECL int fcntl(int d, long cmd, long arg, boost::system::error_code& ec); BOOST_ASIO_DECL int poll_read(int d, boost::system::error_code& ec); BOOST_ASIO_DECL int poll_write(int d, boost::system::error_code& ec); } // namespace descriptor_ops } // namespace detail } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #if defined(BOOST_ASIO_HEADER_ONLY) # include <boost/asio/detail/impl/descriptor_ops.ipp> #endif // defined(BOOST_ASIO_HEADER_ONLY) #endif // !defined(BOOST_WINDOWS) && !defined(__CYGWIN__) #endif // BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP