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author | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
commit | f53a1ef582494458301b97bf6e546be52d7ff7e8 (patch) | |
tree | 7571b5cbcbd8a8f1dd1c966c9045b6cb69f0e295 /3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_gcc.hpp | |
parent | 638345680d72ca6acaf123f2c8c1c391f696e371 (diff) | |
download | swift-contrib-f53a1ef582494458301b97bf6e546be52d7ff7e8.zip swift-contrib-f53a1ef582494458301b97bf6e546be52d7ff7e8.tar.bz2 |
Moving submodule contents back.
Diffstat (limited to '3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_gcc.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_gcc.hpp | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_gcc.hpp b/3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_gcc.hpp new file mode 100644 index 0000000..54807e9 --- /dev/null +++ b/3rdParty/Boost/src/boost/smart_ptr/detail/atomic_count_gcc.hpp @@ -0,0 +1,72 @@ +#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED +#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED + +// +// boost/detail/atomic_count_gcc.hpp +// +// atomic_count for GNU libstdc++ v3 +// +// http://gcc.gnu.org/onlinedocs/porting/Thread-safety.html +// +// Copyright (c) 2001, 2002 Peter Dimov and Multi Media Ltd. +// Copyright (c) 2002 Lars Gullik Bjønnes <larsbj@lyx.org> +// Copyright 2003-2005 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) +// + +#if __GNUC__ * 100 + __GNUC_MINOR__ >= 402 +# include <ext/atomicity.h> +#else +# include <bits/atomicity.h> +#endif + +namespace boost +{ + +namespace detail +{ + +#if defined(__GLIBCXX__) // g++ 3.4+ + +using __gnu_cxx::__atomic_add; +using __gnu_cxx::__exchange_and_add; + +#endif + +class atomic_count +{ +public: + + explicit atomic_count( long v ) : value_( v ) {} + + long operator++() + { + return __exchange_and_add( &value_, +1 ) + 1; + } + + long operator--() + { + return __exchange_and_add( &value_, -1 ) - 1; + } + + operator long() const + { + return __exchange_and_add( &value_, 0 ); + } + +private: + + atomic_count(atomic_count const &); + atomic_count & operator=(atomic_count const &); + + mutable _Atomic_word value_; +}; + +} // namespace detail + +} // namespace boost + +#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED |