source:
vendors/XIOS/current/extern/boost/include/boost/smart_ptr/detail/atomic_count_sync.hpp
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1 | #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED |
2 | #define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED |
3 | |
4 | // |
5 | // boost/detail/atomic_count_sync.hpp |
6 | // |
7 | // atomic_count for g++ 4.1+ |
8 | // |
9 | // http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Atomic-Builtins.html |
10 | // |
11 | // Copyright 2007 Peter Dimov |
12 | // |
13 | // Distributed under the Boost Software License, Version 1.0. (See |
14 | // accompanying file LICENSE_1_0.txt or copy at |
15 | // http://www.boost.org/LICENSE_1_0.txt) |
16 | // |
17 | |
18 | #if defined( __ia64__ ) && defined( __INTEL_COMPILER ) |
19 | # include <ia64intrin.h> |
20 | #endif |
21 | |
22 | namespace boost |
23 | { |
24 | |
25 | namespace detail |
26 | { |
27 | |
28 | class atomic_count |
29 | { |
30 | public: |
31 | |
32 | explicit atomic_count( long v ) : value_( v ) {} |
33 | |
34 | long operator++() |
35 | { |
36 | return __sync_add_and_fetch( &value_, 1 ); |
37 | } |
38 | |
39 | long operator--() |
40 | { |
41 | return __sync_add_and_fetch( &value_, -1 ); |
42 | } |
43 | |
44 | operator long() const |
45 | { |
46 | return __sync_fetch_and_add( &value_, 0 ); |
47 | } |
48 | |
49 | private: |
50 | |
51 | atomic_count(atomic_count const &); |
52 | atomic_count & operator=(atomic_count const &); |
53 | |
54 | mutable long value_; |
55 | }; |
56 | |
57 | } // namespace detail |
58 | |
59 | } // namespace boost |
60 | |
61 | #endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED |
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