1//
2// detail/descriptor_ops.hpp
3// ~~~~~~~~~~~~~~~~~~~~~~~~~
4//
5// Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6//
7// Distributed under the Boost Software License, Version 1.0. (See accompanying
8// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9//
10
11#ifndef BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP
12#define BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP
13
14#if defined(_MSC_VER) && (_MSC_VER >= 1200)
15# pragma once
16#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
17
18#include <boost/asio/detail/config.hpp>
19
20#if !defined(BOOST_ASIO_WINDOWS) \
21 && !defined(BOOST_ASIO_WINDOWS_RUNTIME) \
22 && !defined(__CYGWIN__)
23
24#include <cstddef>
25#include <boost/system/error_code.hpp>
26#include <boost/asio/detail/socket_types.hpp>
27
28#include <boost/asio/detail/push_options.hpp>
29
30namespace boost {
31namespace asio {
32namespace detail {
33namespace descriptor_ops {
34
35// Descriptor state bits.
36enum
37{
38 // The user wants a non-blocking descriptor.
39 user_set_non_blocking = 1,
40
41 // The descriptor has been set non-blocking.
42 internal_non_blocking = 2,
43
44 // Helper "state" used to determine whether the descriptor is non-blocking.
45 non_blocking = user_set_non_blocking | internal_non_blocking,
46
47 // The descriptor may have been dup()-ed.
48 possible_dup = 4
49};
50
51typedef unsigned char state_type;
52
53template <typename ReturnType>
54inline ReturnType error_wrapper(ReturnType return_value,
55 boost::system::error_code& ec)
56{
57 ec = boost::system::error_code(errno,
58 boost::asio::error::get_system_category());
59 return return_value;
60}
61
62BOOST_ASIO_DECL int open(const char* path, int flags,
63 boost::system::error_code& ec);
64
65BOOST_ASIO_DECL int close(int d, state_type& state,
66 boost::system::error_code& ec);
67
68BOOST_ASIO_DECL bool set_user_non_blocking(int d,
69 state_type& state, bool value, boost::system::error_code& ec);
70
71BOOST_ASIO_DECL bool set_internal_non_blocking(int d,
72 state_type& state, bool value, boost::system::error_code& ec);
73
74typedef iovec buf;
75
76BOOST_ASIO_DECL std::size_t sync_read(int d, state_type state, buf* bufs,
77 std::size_t count, bool all_empty, boost::system::error_code& ec);
78
79BOOST_ASIO_DECL bool non_blocking_read(int d, buf* bufs, std::size_t count,
80 boost::system::error_code& ec, std::size_t& bytes_transferred);
81
82BOOST_ASIO_DECL std::size_t sync_write(int d, state_type state,
83 const buf* bufs, std::size_t count, bool all_empty,
84 boost::system::error_code& ec);
85
86BOOST_ASIO_DECL bool non_blocking_write(int d,
87 const buf* bufs, std::size_t count,
88 boost::system::error_code& ec, std::size_t& bytes_transferred);
89
90BOOST_ASIO_DECL int ioctl(int d, state_type& state, long cmd,
91 ioctl_arg_type* arg, boost::system::error_code& ec);
92
93BOOST_ASIO_DECL int fcntl(int d, int cmd, boost::system::error_code& ec);
94
95BOOST_ASIO_DECL int fcntl(int d, int cmd,
96 long arg, boost::system::error_code& ec);
97
98BOOST_ASIO_DECL int poll_read(int d,
99 state_type state, boost::system::error_code& ec);
100
101BOOST_ASIO_DECL int poll_write(int d,
102 state_type state, boost::system::error_code& ec);
103
104} // namespace descriptor_ops
105} // namespace detail
106} // namespace asio
107} // namespace boost
108
109#include <boost/asio/detail/pop_options.hpp>
110
111#if defined(BOOST_ASIO_HEADER_ONLY)
112# include <boost/asio/detail/impl/descriptor_ops.ipp>
113#endif // defined(BOOST_ASIO_HEADER_ONLY)
114
115#endif // !defined(BOOST_ASIO_WINDOWS)
116 // && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
117 // && !defined(__CYGWIN__)
118
119#endif // BOOST_ASIO_DETAIL_DESCRIPTOR_OPS_HPP
120

source code of boost/boost/asio/detail/descriptor_ops.hpp