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1 | // |
2 | // detail/descriptor_ops.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
5 | // Copyright (c) 2003-2016 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 | ||
30 | namespace boost { | |
31 | namespace asio { | |
32 | namespace detail { | |
33 | namespace descriptor_ops { | |
34 | ||
35 | // Descriptor state bits. | |
36 | enum | |
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 | ||
51 | typedef unsigned char state_type; | |
52 | ||
53 | template <typename ReturnType> | |
54 | inline 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 | ||
62 | BOOST_ASIO_DECL int open(const char* path, int flags, | |
63 | boost::system::error_code& ec); | |
64 | ||
65 | BOOST_ASIO_DECL int close(int d, state_type& state, | |
66 | boost::system::error_code& ec); | |
67 | ||
68 | BOOST_ASIO_DECL bool set_user_non_blocking(int d, | |
69 | state_type& state, bool value, boost::system::error_code& ec); | |
70 | ||
71 | BOOST_ASIO_DECL bool set_internal_non_blocking(int d, | |
72 | state_type& state, bool value, boost::system::error_code& ec); | |
73 | ||
74 | typedef iovec buf; | |
75 | ||
76 | BOOST_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 | ||
79 | BOOST_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 | ||
82 | BOOST_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 | ||
86 | BOOST_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 | ||
90 | BOOST_ASIO_DECL int ioctl(int d, state_type& state, long cmd, | |
91 | ioctl_arg_type* arg, boost::system::error_code& ec); | |
92 | ||
93 | BOOST_ASIO_DECL int fcntl(int d, int cmd, boost::system::error_code& ec); | |
94 | ||
95 | BOOST_ASIO_DECL int fcntl(int d, int cmd, | |
96 | long arg, boost::system::error_code& ec); | |
97 | ||
98 | BOOST_ASIO_DECL int poll_read(int d, | |
99 | state_type state, boost::system::error_code& ec); | |
100 | ||
101 | BOOST_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 |