1 | // |
2 | // detail/io_control.hpp |
3 | // ~~~~~~~~~~~~~~~~~~~~~ |
4 | // |
5 | // Copyright (c) 2003-2024 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_IO_CONTROL_HPP |
12 | #define BOOST_ASIO_DETAIL_IO_CONTROL_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 | #include <cstddef> |
20 | #include <boost/asio/detail/socket_types.hpp> |
21 | |
22 | #include <boost/asio/detail/push_options.hpp> |
23 | |
24 | namespace boost { |
25 | namespace asio { |
26 | namespace detail { |
27 | namespace io_control { |
28 | |
29 | // I/O control command for getting number of bytes available. |
30 | class bytes_readable |
31 | { |
32 | public: |
33 | // Default constructor. |
34 | bytes_readable() |
35 | : value_(0) |
36 | { |
37 | } |
38 | |
39 | // Construct with a specific command value. |
40 | bytes_readable(std::size_t value) |
41 | : value_(static_cast<detail::ioctl_arg_type>(value)) |
42 | { |
43 | } |
44 | |
45 | // Get the name of the IO control command. |
46 | int name() const |
47 | { |
48 | return static_cast<int>(BOOST_ASIO_OS_DEF(FIONREAD)); |
49 | } |
50 | |
51 | // Set the value of the I/O control command. |
52 | void set(std::size_t value) |
53 | { |
54 | value_ = static_cast<detail::ioctl_arg_type>(value); |
55 | } |
56 | |
57 | // Get the current value of the I/O control command. |
58 | std::size_t get() const |
59 | { |
60 | return static_cast<std::size_t>(value_); |
61 | } |
62 | |
63 | // Get the address of the command data. |
64 | detail::ioctl_arg_type* data() |
65 | { |
66 | return &value_; |
67 | } |
68 | |
69 | // Get the address of the command data. |
70 | const detail::ioctl_arg_type* data() const |
71 | { |
72 | return &value_; |
73 | } |
74 | |
75 | private: |
76 | detail::ioctl_arg_type value_; |
77 | }; |
78 | |
79 | } // namespace io_control |
80 | } // namespace detail |
81 | } // namespace asio |
82 | } // namespace boost |
83 | |
84 | #include <boost/asio/detail/pop_options.hpp> |
85 | |
86 | #endif // BOOST_ASIO_DETAIL_IO_CONTROL_HPP |
87 | |