source:
vendors/XIOS/current/extern/boost/include/boost/smart_ptr/detail/spinlock_pt.hpp
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3408
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1 | #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_HPP_INCLUDED |
2 | #define BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_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 <pthread.h> |
19 | |
20 | namespace boost |
21 | { |
22 | |
23 | namespace detail |
24 | { |
25 | |
26 | class spinlock |
27 | { |
28 | public: |
29 | |
30 | pthread_mutex_t v_; |
31 | |
32 | public: |
33 | |
34 | bool try_lock() |
35 | { |
36 | return pthread_mutex_trylock( &v_ ) == 0; |
37 | } |
38 | |
39 | void lock() |
40 | { |
41 | pthread_mutex_lock( &v_ ); |
42 | } |
43 | |
44 | void unlock() |
45 | { |
46 | pthread_mutex_unlock( &v_ ); |
47 | } |
48 | |
49 | public: |
50 | |
51 | class scoped_lock |
52 | { |
53 | private: |
54 | |
55 | spinlock & sp_; |
56 | |
57 | scoped_lock( scoped_lock const & ); |
58 | scoped_lock & operator=( scoped_lock const & ); |
59 | |
60 | public: |
61 | |
62 | explicit scoped_lock( spinlock & sp ): sp_( sp ) |
63 | { |
64 | sp.lock(); |
65 | } |
66 | |
67 | ~scoped_lock() |
68 | { |
69 | sp_.unlock(); |
70 | } |
71 | }; |
72 | }; |
73 | |
74 | } // namespace detail |
75 | } // namespace boost |
76 | |
77 | #define BOOST_DETAIL_SPINLOCK_INIT { PTHREAD_MUTEX_INITIALIZER } |
78 | |
79 | #endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_HPP_INCLUDED |
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