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Diffstat (limited to '3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_std_atomic.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_std_atomic.hpp | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_std_atomic.hpp b/3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_std_atomic.hpp new file mode 100644 index 0000000..55b9998 --- /dev/null +++ b/3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_std_atomic.hpp @@ -0,0 +1,60 @@ +#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_STD_ATOMIC_HPP_INCLUDED +#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_STD_ATOMIC_HPP_INCLUDED + +// +// boost/detail/atomic_count_std_atomic.hpp +// +// atomic_count for std::atomic +// +// Copyright 2013 Peter Dimov +// +// Distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt +// + +#include <atomic> +#include <cstdint> + +namespace boost +{ + +namespace detail +{ + +class atomic_count +{ +public: + + explicit atomic_count( long v ): value_( v ) + { + } + + long operator++() + { + return value_.fetch_add( 1, std::memory_order_acq_rel ) + 1; + } + + long operator--() + { + return value_.fetch_sub( 1, std::memory_order_acq_rel ) - 1; + } + + operator long() const + { + return value_.load( std::memory_order_acquire ); + } + +private: + + atomic_count(atomic_count const &); + atomic_count & operator=(atomic_count const &); + + std::atomic_int_least32_t value_; +}; + +} // namespace detail + +} // namespace boost + +#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_STD_ATOMIC_HPP_INCLUDED |