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1 | // |
2 | // detail/null_signal_blocker.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
f67539c2 | 5 | // Copyright (c) 2003-2020 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_NULL_SIGNAL_BLOCKER_HPP | |
12 | #define BOOST_ASIO_DETAIL_NULL_SIGNAL_BLOCKER_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_HAS_THREADS) \ | |
21 | || defined(BOOST_ASIO_WINDOWS) \ | |
22 | || defined(BOOST_ASIO_WINDOWS_RUNTIME) \ | |
23 | || defined(__CYGWIN__) \ | |
24 | || defined(__SYMBIAN32__) | |
25 | ||
26 | #include <boost/asio/detail/noncopyable.hpp> | |
27 | ||
28 | #include <boost/asio/detail/push_options.hpp> | |
29 | ||
30 | namespace boost { | |
31 | namespace asio { | |
32 | namespace detail { | |
33 | ||
34 | class null_signal_blocker | |
35 | : private noncopyable | |
36 | { | |
37 | public: | |
38 | // Constructor blocks all signals for the calling thread. | |
39 | null_signal_blocker() | |
40 | { | |
41 | } | |
42 | ||
43 | // Destructor restores the previous signal mask. | |
44 | ~null_signal_blocker() | |
45 | { | |
46 | } | |
47 | ||
48 | // Block all signals for the calling thread. | |
49 | void block() | |
50 | { | |
51 | } | |
52 | ||
53 | // Restore the previous signal mask. | |
54 | void unblock() | |
55 | { | |
56 | } | |
57 | }; | |
58 | ||
59 | } // namespace detail | |
60 | } // namespace asio | |
61 | } // namespace boost | |
62 | ||
63 | #include <boost/asio/detail/pop_options.hpp> | |
64 | ||
65 | #endif // !defined(BOOST_ASIO_HAS_THREADS) | |
66 | // || defined(BOOST_ASIO_WINDOWS) | |
67 | // || defined(BOOST_ASIO_WINDOWS_RUNTIME) | |
68 | // || defined(__CYGWIN__) | |
69 | // || defined(__SYMBIAN32__) | |
70 | ||
71 | #endif // BOOST_ASIO_DETAIL_NULL_SIGNAL_BLOCKER_HPP |