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1 | // |
2 | // detail/socket_holder.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
11fdf7f2 | 5 | // Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
7c673cae FG |
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_SOCKET_HOLDER_HPP | |
12 | #define BOOST_ASIO_DETAIL_SOCKET_HOLDER_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 <boost/asio/detail/noncopyable.hpp> | |
20 | #include <boost/asio/detail/socket_ops.hpp> | |
21 | ||
22 | #include <boost/asio/detail/push_options.hpp> | |
23 | ||
24 | namespace boost { | |
25 | namespace asio { | |
26 | namespace detail { | |
27 | ||
28 | // Implement the resource acquisition is initialisation idiom for sockets. | |
29 | class socket_holder | |
30 | : private noncopyable | |
31 | { | |
32 | public: | |
33 | // Construct as an uninitialised socket. | |
34 | socket_holder() | |
35 | : socket_(invalid_socket) | |
36 | { | |
37 | } | |
38 | ||
39 | // Construct to take ownership of the specified socket. | |
40 | explicit socket_holder(socket_type s) | |
41 | : socket_(s) | |
42 | { | |
43 | } | |
44 | ||
45 | // Destructor. | |
46 | ~socket_holder() | |
47 | { | |
48 | if (socket_ != invalid_socket) | |
49 | { | |
50 | boost::system::error_code ec; | |
51 | socket_ops::state_type state = 0; | |
52 | socket_ops::close(socket_, state, true, ec); | |
53 | } | |
54 | } | |
55 | ||
56 | // Get the underlying socket. | |
57 | socket_type get() const | |
58 | { | |
59 | return socket_; | |
60 | } | |
61 | ||
62 | // Reset to an uninitialised socket. | |
63 | void reset() | |
64 | { | |
65 | if (socket_ != invalid_socket) | |
66 | { | |
67 | boost::system::error_code ec; | |
68 | socket_ops::state_type state = 0; | |
69 | socket_ops::close(socket_, state, true, ec); | |
70 | socket_ = invalid_socket; | |
71 | } | |
72 | } | |
73 | ||
74 | // Reset to take ownership of the specified socket. | |
75 | void reset(socket_type s) | |
76 | { | |
77 | reset(); | |
78 | socket_ = s; | |
79 | } | |
80 | ||
81 | // Release ownership of the socket. | |
82 | socket_type release() | |
83 | { | |
84 | socket_type tmp = socket_; | |
85 | socket_ = invalid_socket; | |
86 | return tmp; | |
87 | } | |
88 | ||
89 | private: | |
90 | // The underlying socket. | |
91 | socket_type socket_; | |
92 | }; | |
93 | ||
94 | } // namespace detail | |
95 | } // namespace asio | |
96 | } // namespace boost | |
97 | ||
98 | #include <boost/asio/detail/pop_options.hpp> | |
99 | ||
100 | #endif // BOOST_ASIO_DETAIL_SOCKET_HOLDER_HPP |