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1 | // |
2 | // detail/null_static_mutex.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_NULL_STATIC_MUTEX_HPP | |
12 | #define BOOST_ASIO_DETAIL_NULL_STATIC_MUTEX_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 | ||
22 | #include <boost/asio/detail/scoped_lock.hpp> | |
23 | ||
24 | #include <boost/asio/detail/push_options.hpp> | |
25 | ||
26 | namespace boost { | |
27 | namespace asio { | |
28 | namespace detail { | |
29 | ||
30 | struct null_static_mutex | |
31 | { | |
32 | typedef boost::asio::detail::scoped_lock<null_static_mutex> scoped_lock; | |
33 | ||
34 | // Initialise the mutex. | |
35 | void init() | |
36 | { | |
37 | } | |
38 | ||
39 | // Lock the mutex. | |
40 | void lock() | |
41 | { | |
42 | } | |
43 | ||
44 | // Unlock the mutex. | |
45 | void unlock() | |
46 | { | |
47 | } | |
48 | ||
49 | int unused_; | |
50 | }; | |
51 | ||
52 | #define BOOST_ASIO_NULL_STATIC_MUTEX_INIT { 0 } | |
53 | ||
54 | } // namespace detail | |
55 | } // namespace asio | |
56 | } // namespace boost | |
57 | ||
58 | #include <boost/asio/detail/pop_options.hpp> | |
59 | ||
60 | #endif // !defined(BOOST_ASIO_HAS_THREADS) | |
61 | ||
62 | #endif // BOOST_ASIO_DETAIL_NULL_STATIC_MUTEX_HPP |