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Diffstat (limited to '3rdParty/Boost/src/boost/thread/pthread/once_atomic.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/thread/pthread/once_atomic.hpp | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/thread/pthread/once_atomic.hpp b/3rdParty/Boost/src/boost/thread/pthread/once_atomic.hpp new file mode 100644 index 0000000..923f07b --- /dev/null +++ b/3rdParty/Boost/src/boost/thread/pthread/once_atomic.hpp @@ -0,0 +1,313 @@ +#ifndef BOOST_THREAD_PTHREAD_ONCE_ATOMIC_HPP +#define BOOST_THREAD_PTHREAD_ONCE_ATOMIC_HPP + +// once.hpp +// +// (C) Copyright 2013 Andrey Semashev +// (C) Copyright 2013 Vicente J. Botet Escriba +// +// 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 <boost/thread/detail/config.hpp> + +#include <boost/cstdint.hpp> +#include <boost/thread/detail/move.hpp> +#include <boost/thread/detail/invoke.hpp> +#include <boost/core/no_exceptions_support.hpp> +#include <boost/bind.hpp> +#include <boost/atomic.hpp> + +#include <boost/config/abi_prefix.hpp> + +namespace boost +{ + + struct once_flag; + + namespace thread_detail + { + +#if BOOST_ATOMIC_INT_LOCK_FREE == 2 + typedef unsigned int atomic_int_type; +#elif BOOST_ATOMIC_SHORT_LOCK_FREE == 2 + typedef unsigned short atomic_int_type; +#elif BOOST_ATOMIC_CHAR_LOCK_FREE == 2 + typedef unsigned char atomic_int_type; +#elif BOOST_ATOMIC_LONG_LOCK_FREE == 2 + typedef unsigned long atomic_int_type; +#elif defined(BOOST_HAS_LONG_LONG) && BOOST_ATOMIC_LLONG_LOCK_FREE == 2 + typedef ulong_long_type atomic_int_type; +#else + // All tested integer types are not atomic, the spinlock pool will be used + typedef unsigned int atomic_int_type; +#endif + + typedef boost::atomic<atomic_int_type> atomic_type; + + BOOST_THREAD_DECL bool enter_once_region(once_flag& flag) BOOST_NOEXCEPT; + BOOST_THREAD_DECL void commit_once_region(once_flag& flag) BOOST_NOEXCEPT; + BOOST_THREAD_DECL void rollback_once_region(once_flag& flag) BOOST_NOEXCEPT; + inline atomic_type& get_atomic_storage(once_flag& flag) BOOST_NOEXCEPT; + } + +#ifdef BOOST_THREAD_PROVIDES_ONCE_CXX11 + + struct once_flag + { + BOOST_THREAD_NO_COPYABLE(once_flag) + BOOST_CONSTEXPR once_flag() BOOST_NOEXCEPT : storage(0) + { + } + + private: + thread_detail::atomic_type storage; + + friend BOOST_THREAD_DECL bool thread_detail::enter_once_region(once_flag& flag) BOOST_NOEXCEPT; + friend BOOST_THREAD_DECL void thread_detail::commit_once_region(once_flag& flag) BOOST_NOEXCEPT; + friend BOOST_THREAD_DECL void thread_detail::rollback_once_region(once_flag& flag) BOOST_NOEXCEPT; + friend thread_detail::atomic_type& thread_detail::get_atomic_storage(once_flag& flag) BOOST_NOEXCEPT; + }; + +#define BOOST_ONCE_INIT boost::once_flag() + + namespace thread_detail + { + inline atomic_type& get_atomic_storage(once_flag& flag) BOOST_NOEXCEPT + { + //return reinterpret_cast< atomic_type& >(flag.storage); + return flag.storage; + } + } + +#else // BOOST_THREAD_PROVIDES_ONCE_CXX11 + struct once_flag + { + // The thread_detail::atomic_int_type storage is marked + // with this attribute in order to let the compiler know that it will alias this member + // and silence compilation warnings. + BOOST_THREAD_ATTRIBUTE_MAY_ALIAS thread_detail::atomic_int_type storage; + }; + + #define BOOST_ONCE_INIT {0} + + namespace thread_detail + { + inline atomic_type& get_atomic_storage(once_flag& flag) BOOST_NOEXCEPT + { + return reinterpret_cast< atomic_type& >(flag.storage); + } + + } + +#endif // BOOST_THREAD_PROVIDES_ONCE_CXX11 + +#if defined BOOST_THREAD_PROVIDES_INVOKE +#define BOOST_THREAD_INVOKE_RET_VOID detail::invoke +#define BOOST_THREAD_INVOKE_RET_VOID_CALL +#elif defined BOOST_THREAD_PROVIDES_INVOKE_RET +#define BOOST_THREAD_INVOKE_RET_VOID detail::invoke<void> +#define BOOST_THREAD_INVOKE_RET_VOID_CALL +#else +#define BOOST_THREAD_INVOKE_RET_VOID boost::bind +#define BOOST_THREAD_INVOKE_RET_VOID_CALL () +#endif + + +#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) + + template<typename Function, class ...ArgTypes> + inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + BOOST_THREAD_INVOKE_RET_VOID( + thread_detail::decay_copy(boost::forward<Function>(f)), + thread_detail::decay_copy(boost::forward<ArgTypes>(args))... + ) BOOST_THREAD_INVOKE_RET_VOID_CALL; + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } +#else + template<typename Function> + inline void call_once(once_flag& flag, Function f) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + f(); + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } + + template<typename Function, typename T1> + inline void call_once(once_flag& flag, Function f, T1 p1) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + BOOST_THREAD_INVOKE_RET_VOID(f, p1) BOOST_THREAD_INVOKE_RET_VOID_CALL; + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } + + template<typename Function, typename T1, typename T2> + inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + BOOST_THREAD_INVOKE_RET_VOID(f, p1, p2) BOOST_THREAD_INVOKE_RET_VOID_CALL; + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } + + template<typename Function, typename T1, typename T2, typename T3> + inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2, T3 p3) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + BOOST_THREAD_INVOKE_RET_VOID(f, p1, p2, p3) BOOST_THREAD_INVOKE_RET_VOID_CALL; + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } + + template<typename Function> + inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + f(); + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } + + template<typename Function, typename T1> + inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + BOOST_THREAD_INVOKE_RET_VOID( + thread_detail::decay_copy(boost::forward<Function>(f)), + thread_detail::decay_copy(boost::forward<T1>(p1)) + ) BOOST_THREAD_INVOKE_RET_VOID_CALL; + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } + template<typename Function, typename T1, typename T2> + inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1, BOOST_THREAD_RV_REF(T2) p2) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + BOOST_THREAD_INVOKE_RET_VOID( + thread_detail::decay_copy(boost::forward<Function>(f)), + thread_detail::decay_copy(boost::forward<T1>(p1)), + thread_detail::decay_copy(boost::forward<T1>(p2)) + ) BOOST_THREAD_INVOKE_RET_VOID_CALL; + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } + template<typename Function, typename T1, typename T2, typename T3> + inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1, BOOST_THREAD_RV_REF(T2) p2, BOOST_THREAD_RV_REF(T3) p3) + { + if (thread_detail::enter_once_region(flag)) + { + BOOST_TRY + { + BOOST_THREAD_INVOKE_RET_VOID( + thread_detail::decay_copy(boost::forward<Function>(f)), + thread_detail::decay_copy(boost::forward<T1>(p1)), + thread_detail::decay_copy(boost::forward<T1>(p2)), + thread_detail::decay_copy(boost::forward<T1>(p3)) + ) BOOST_THREAD_INVOKE_RET_VOID_CALL; + + } + BOOST_CATCH (...) + { + thread_detail::rollback_once_region(flag); + BOOST_RETHROW + } + BOOST_CATCH_END + thread_detail::commit_once_region(flag); + } + } + + + +#endif +} + +#include <boost/config/abi_suffix.hpp> + +#endif + |