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375 lines
11 KiB
C++
375 lines
11 KiB
C++
// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// (C) Copyright 2007-8 Anthony Williams
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// (C) Copyright 2011-2012 Vicente J. Botet Escriba
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#ifndef BOOST_THREAD_MOVE_HPP
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#define BOOST_THREAD_MOVE_HPP
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#include <boost/thread/detail/config.hpp>
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#ifndef BOOST_NO_SFINAE
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#include <boost/core/enable_if.hpp>
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#include <boost/type_traits/is_convertible.hpp>
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#include <boost/type_traits/remove_reference.hpp>
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#include <boost/type_traits/remove_cv.hpp>
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#include <boost/type_traits/decay.hpp>
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#include <boost/type_traits/conditional.hpp>
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#include <boost/type_traits/remove_extent.hpp>
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#include <boost/type_traits/is_array.hpp>
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#include <boost/type_traits/is_function.hpp>
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#include <boost/type_traits/remove_cv.hpp>
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#include <boost/type_traits/add_pointer.hpp>
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#include <boost/type_traits/decay.hpp>
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#endif
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#include <boost/thread/detail/delete.hpp>
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#include <boost/move/utility.hpp>
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#include <boost/move/traits.hpp>
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#include <boost/config/abi_prefix.hpp>
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#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
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#include <type_traits>
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#endif
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namespace boost
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{
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namespace detail
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{
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template <typename T>
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struct enable_move_utility_emulation_dummy_specialization;
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template<typename T>
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struct thread_move_t
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{
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T& t;
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explicit thread_move_t(T& t_):
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t(t_)
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{}
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T& operator*() const
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{
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return t;
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}
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T* operator->() const
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{
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return &t;
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}
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private:
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void operator=(thread_move_t&);
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};
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}
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#if !defined BOOST_THREAD_USES_MOVE
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#ifndef BOOST_NO_SFINAE
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template<typename T>
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typename enable_if<boost::is_convertible<T&,boost::detail::thread_move_t<T> >, boost::detail::thread_move_t<T> >::type move(T& t)
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{
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return boost::detail::thread_move_t<T>(t);
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}
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#endif
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template<typename T>
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boost::detail::thread_move_t<T> move(boost::detail::thread_move_t<T> t)
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{
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return t;
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}
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#endif //#if !defined BOOST_THREAD_USES_MOVE
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}
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#if ! defined BOOST_NO_CXX11_RVALUE_REFERENCES
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#define BOOST_THREAD_COPY_ASSIGN_REF(TYPE) BOOST_COPY_ASSIGN_REF(TYPE)
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#define BOOST_THREAD_RV_REF(TYPE) BOOST_RV_REF(TYPE)
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#define BOOST_THREAD_RV_REF_2_TEMPL_ARGS(TYPE) BOOST_RV_REF_2_TEMPL_ARGS(TYPE)
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#define BOOST_THREAD_RV_REF_BEG BOOST_RV_REF_BEG
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#define BOOST_THREAD_RV_REF_END BOOST_RV_REF_END
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#define BOOST_THREAD_RV(V) V
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#define BOOST_THREAD_MAKE_RV_REF(RVALUE) RVALUE
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#define BOOST_THREAD_FWD_REF(TYPE) BOOST_FWD_REF(TYPE)
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#define BOOST_THREAD_DCL_MOVABLE(TYPE)
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#define BOOST_THREAD_DCL_MOVABLE_BEG(T) \
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namespace detail { \
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template <typename T> \
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struct enable_move_utility_emulation_dummy_specialization<
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#define BOOST_THREAD_DCL_MOVABLE_BEG2(T1, T2) \
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namespace detail { \
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template <typename T1, typename T2> \
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struct enable_move_utility_emulation_dummy_specialization<
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#define BOOST_THREAD_DCL_MOVABLE_END > \
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: integral_constant<bool, false> \
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{}; \
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}
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#elif ! defined BOOST_NO_CXX11_RVALUE_REFERENCES && defined BOOST_MSVC
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#define BOOST_THREAD_COPY_ASSIGN_REF(TYPE) BOOST_COPY_ASSIGN_REF(TYPE)
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#define BOOST_THREAD_RV_REF(TYPE) BOOST_RV_REF(TYPE)
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#define BOOST_THREAD_RV_REF_2_TEMPL_ARGS(TYPE) BOOST_RV_REF_2_TEMPL_ARGS(TYPE)
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#define BOOST_THREAD_RV_REF_BEG BOOST_RV_REF_BEG
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#define BOOST_THREAD_RV_REF_END BOOST_RV_REF_END
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#define BOOST_THREAD_RV(V) V
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#define BOOST_THREAD_MAKE_RV_REF(RVALUE) RVALUE
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#define BOOST_THREAD_FWD_REF(TYPE) BOOST_FWD_REF(TYPE)
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#define BOOST_THREAD_DCL_MOVABLE(TYPE)
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#define BOOST_THREAD_DCL_MOVABLE_BEG(T) \
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namespace detail { \
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template <typename T> \
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struct enable_move_utility_emulation_dummy_specialization<
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#define BOOST_THREAD_DCL_MOVABLE_BEG2(T1, T2) \
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namespace detail { \
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template <typename T1, typename T2> \
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struct enable_move_utility_emulation_dummy_specialization<
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#define BOOST_THREAD_DCL_MOVABLE_END > \
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: integral_constant<bool, false> \
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{}; \
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}
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#else
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#if defined BOOST_THREAD_USES_MOVE
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#define BOOST_THREAD_COPY_ASSIGN_REF(TYPE) BOOST_COPY_ASSIGN_REF(TYPE)
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#define BOOST_THREAD_RV_REF(TYPE) BOOST_RV_REF(TYPE)
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#define BOOST_THREAD_RV_REF_2_TEMPL_ARGS(TYPE) BOOST_RV_REF_2_TEMPL_ARGS(TYPE)
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#define BOOST_THREAD_RV_REF_BEG BOOST_RV_REF_BEG
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#define BOOST_THREAD_RV_REF_END BOOST_RV_REF_END
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#define BOOST_THREAD_RV(V) V
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#define BOOST_THREAD_FWD_REF(TYPE) BOOST_FWD_REF(TYPE)
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#define BOOST_THREAD_DCL_MOVABLE(TYPE)
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#define BOOST_THREAD_DCL_MOVABLE_BEG(T) \
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namespace detail { \
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template <typename T> \
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struct enable_move_utility_emulation_dummy_specialization<
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#define BOOST_THREAD_DCL_MOVABLE_BEG2(T1, T2) \
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namespace detail { \
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template <typename T1, typename T2> \
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struct enable_move_utility_emulation_dummy_specialization<
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#define BOOST_THREAD_DCL_MOVABLE_END > \
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: integral_constant<bool, false> \
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{}; \
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}
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#else
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#define BOOST_THREAD_COPY_ASSIGN_REF(TYPE) const TYPE&
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#define BOOST_THREAD_RV_REF(TYPE) boost::detail::thread_move_t< TYPE >
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#define BOOST_THREAD_RV_REF_BEG boost::detail::thread_move_t<
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#define BOOST_THREAD_RV_REF_END >
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#define BOOST_THREAD_RV(V) (*V)
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#define BOOST_THREAD_FWD_REF(TYPE) BOOST_FWD_REF(TYPE)
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#define BOOST_THREAD_DCL_MOVABLE(TYPE) \
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template <> \
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struct enable_move_utility_emulation< TYPE > \
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{ \
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static const bool value = false; \
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};
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#define BOOST_THREAD_DCL_MOVABLE_BEG(T) \
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template <typename T> \
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struct enable_move_utility_emulation<
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#define BOOST_THREAD_DCL_MOVABLE_BEG2(T1, T2) \
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template <typename T1, typename T2> \
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struct enable_move_utility_emulation<
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#define BOOST_THREAD_DCL_MOVABLE_END > \
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{ \
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static const bool value = false; \
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};
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#endif
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namespace boost
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{
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namespace detail
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{
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template <typename T>
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BOOST_THREAD_RV_REF(typename ::boost::remove_cv<typename ::boost::remove_reference<T>::type>::type)
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make_rv_ref(T v) BOOST_NOEXCEPT
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{
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return (BOOST_THREAD_RV_REF(typename ::boost::remove_cv<typename ::boost::remove_reference<T>::type>::type))(v);
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}
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// template <typename T>
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// BOOST_THREAD_RV_REF(typename ::boost::remove_cv<typename ::boost::remove_reference<T>::type>::type)
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// make_rv_ref(T &v) BOOST_NOEXCEPT
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// {
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// return (BOOST_THREAD_RV_REF(typename ::boost::remove_cv<typename ::boost::remove_reference<T>::type>::type))(v);
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// }
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// template <typename T>
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// const BOOST_THREAD_RV_REF(typename ::boost::remove_cv<typename ::boost::remove_reference<T>::type>::type)
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// make_rv_ref(T const&v) BOOST_NOEXCEPT
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// {
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// return (const BOOST_THREAD_RV_REF(typename ::boost::remove_cv<typename ::boost::remove_reference<T>::type>::type))(v);
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// }
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}
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}
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#define BOOST_THREAD_MAKE_RV_REF(RVALUE) RVALUE.move()
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//#define BOOST_THREAD_MAKE_RV_REF(RVALUE) boost::detail::make_rv_ref(RVALUE)
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#endif
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#if ! defined BOOST_NO_CXX11_RVALUE_REFERENCES
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#define BOOST_THREAD_MOVABLE(TYPE)
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#define BOOST_THREAD_COPYABLE(TYPE)
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#else
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#if defined BOOST_THREAD_USES_MOVE
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#define BOOST_THREAD_MOVABLE(TYPE) \
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::boost::rv<TYPE>& move() BOOST_NOEXCEPT \
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{ \
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return *static_cast< ::boost::rv<TYPE>* >(this); \
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} \
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const ::boost::rv<TYPE>& move() const BOOST_NOEXCEPT \
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{ \
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return *static_cast<const ::boost::rv<TYPE>* >(this); \
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} \
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operator ::boost::rv<TYPE>&() \
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{ \
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return *static_cast< ::boost::rv<TYPE>* >(this); \
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} \
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operator const ::boost::rv<TYPE>&() const \
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{ \
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return *static_cast<const ::boost::rv<TYPE>* >(this); \
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}\
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#define BOOST_THREAD_COPYABLE(TYPE) \
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TYPE& operator=(TYPE &t)\
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{ this->operator=(static_cast<const ::boost::rv<TYPE> &>(const_cast<const TYPE &>(t))); return *this;}
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#else
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#define BOOST_THREAD_MOVABLE(TYPE) \
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operator ::boost::detail::thread_move_t<TYPE>() BOOST_NOEXCEPT \
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{ \
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return move(); \
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} \
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::boost::detail::thread_move_t<TYPE> move() BOOST_NOEXCEPT \
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{ \
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::boost::detail::thread_move_t<TYPE> x(*this); \
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return x; \
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} \
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#define BOOST_THREAD_COPYABLE(TYPE)
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#endif
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#endif
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#define BOOST_THREAD_MOVABLE_ONLY(TYPE) \
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BOOST_THREAD_NO_COPYABLE(TYPE) \
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BOOST_THREAD_MOVABLE(TYPE) \
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typedef int boost_move_no_copy_constructor_or_assign; \
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#define BOOST_THREAD_COPYABLE_AND_MOVABLE(TYPE) \
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BOOST_THREAD_COPYABLE(TYPE) \
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BOOST_THREAD_MOVABLE(TYPE) \
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namespace boost
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{
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namespace thread_detail
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{
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#if ! defined BOOST_NO_CXX11_RVALUE_REFERENCES
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#elif defined BOOST_THREAD_USES_MOVE
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template <class T>
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struct is_rv
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: ::boost::move_detail::is_rv<T>
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{};
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#else
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template <class T>
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struct is_rv
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: ::boost::integral_constant<bool, false>
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{};
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template <class T>
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struct is_rv< ::boost::detail::thread_move_t<T> >
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: ::boost::integral_constant<bool, true>
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{};
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template <class T>
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struct is_rv< const ::boost::detail::thread_move_t<T> >
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: ::boost::integral_constant<bool, true>
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{};
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#endif
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#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
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template <class Tp>
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struct remove_reference : boost::remove_reference<Tp> {};
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template <class Tp>
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struct decay : boost::decay<Tp> {};
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#else
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template <class Tp>
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struct remove_reference
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{
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typedef Tp type;
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};
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template <class Tp>
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struct remove_reference<Tp&>
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{
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typedef Tp type;
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};
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template <class Tp>
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struct remove_reference< rv<Tp> > {
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typedef Tp type;
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};
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template <class Tp>
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struct decay
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{
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private:
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typedef typename boost::move_detail::remove_rvalue_reference<Tp>::type Up0;
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typedef typename boost::remove_reference<Up0>::type Up;
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public:
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typedef typename conditional
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<
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is_array<Up>::value,
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typename remove_extent<Up>::type*,
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typename conditional
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<
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is_function<Up>::value,
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typename add_pointer<Up>::type,
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typename remove_cv<Up>::type
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>::type
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>::type type;
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};
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#endif
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#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
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template <class T>
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typename decay<T>::type
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decay_copy(T&& t)
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{
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return boost::forward<T>(t);
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}
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#else
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template <class T>
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typename decay<T>::type
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decay_copy(BOOST_THREAD_FWD_REF(T) t)
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{
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return boost::forward<T>(t);
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}
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#endif
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}
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}
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#include <boost/config/abi_suffix.hpp>
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#endif
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