source: vendor/nemo/current/NEMOGCM/EXTERNAL/XIOS/extern/boost/include/boost/smart_ptr/detail/atomic_count_sync.hpp @ 44

Last change on this file since 44 was 44, checked in by cholod, 12 years ago

Load NEMO_TMP into vendor/nemo/current.

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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
22namespace boost
23{
24
25namespace detail
26{
27
28class atomic_count
29{
30public:
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
49private:
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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