source:
vendors/XIOS/current/extern/boost/include/boost/smart_ptr/detail/spinlock_nt.hpp
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3408
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1 | #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_NT_HPP_INCLUDED |
2 | #define BOOST_SMART_PTR_DETAIL_SPINLOCK_NT_HPP_INCLUDED |
3 | |
4 | // MS compatible compilers support #pragma once |
5 | |
6 | #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
7 | # pragma once |
8 | #endif |
9 | |
10 | // |
11 | // Copyright (c) 2008 Peter Dimov |
12 | // |
13 | // Distributed under the Boost Software License, Version 1.0. |
14 | // See accompanying file LICENSE_1_0.txt or copy at |
15 | // http://www.boost.org/LICENSE_1_0.txt) |
16 | // |
17 | |
18 | #include <boost/assert.hpp> |
19 | |
20 | namespace boost |
21 | { |
22 | |
23 | namespace detail |
24 | { |
25 | |
26 | class spinlock |
27 | { |
28 | public: |
29 | |
30 | bool locked_; |
31 | |
32 | public: |
33 | |
34 | inline bool try_lock() |
35 | { |
36 | if( locked_ ) |
37 | { |
38 | return false; |
39 | } |
40 | else |
41 | { |
42 | locked_ = true; |
43 | return true; |
44 | } |
45 | } |
46 | |
47 | inline void lock() |
48 | { |
49 | BOOST_ASSERT( !locked_ ); |
50 | locked_ = true; |
51 | } |
52 | |
53 | inline void unlock() |
54 | { |
55 | BOOST_ASSERT( locked_ ); |
56 | locked_ = false; |
57 | } |
58 | |
59 | public: |
60 | |
61 | class scoped_lock |
62 | { |
63 | private: |
64 | |
65 | spinlock & sp_; |
66 | |
67 | scoped_lock( scoped_lock const & ); |
68 | scoped_lock & operator=( scoped_lock const & ); |
69 | |
70 | public: |
71 | |
72 | explicit scoped_lock( spinlock & sp ): sp_( sp ) |
73 | { |
74 | sp.lock(); |
75 | } |
76 | |
77 | ~scoped_lock() |
78 | { |
79 | sp_.unlock(); |
80 | } |
81 | }; |
82 | }; |
83 | |
84 | } // namespace detail |
85 | } // namespace boost |
86 | |
87 | #define BOOST_DETAIL_SPINLOCK_INIT { false } |
88 | |
89 | #endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_NT_HPP_INCLUDED |
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