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externals: Update boost to 1.72 and add Boost Context
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Fernando Sahmkow
parent
5e8300b76a
commit
77abe07b3b
618 changed files with 96299 additions and 14263 deletions
255
boost/thread/barrier.hpp
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255
boost/thread/barrier.hpp
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// Copyright (C) 2002-2003
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// David Moore, William E. Kempf
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// Copyright (C) 2007-8 Anthony Williams
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// (C) Copyright 2013 Vicente J. Botet Escriba
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_BARRIER_JDM030602_HPP
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#define BOOST_BARRIER_JDM030602_HPP
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#include <boost/thread/detail/config.hpp>
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#include <boost/thread/detail/delete.hpp>
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#include <boost/throw_exception.hpp>
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#include <boost/thread/mutex.hpp>
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#include <boost/thread/lock_types.hpp>
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#include <boost/thread/condition_variable.hpp>
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#include <string>
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#include <stdexcept>
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#include <boost/thread/detail/nullary_function.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/type_traits/is_void.hpp>
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#include <boost/core/enable_if.hpp>
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#include <boost/utility/result_of.hpp>
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#include <boost/config/abi_prefix.hpp>
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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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typedef detail::nullary_function<void()> void_completion_function;
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typedef detail::nullary_function<size_t()> size_completion_function;
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struct default_barrier_reseter
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{
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unsigned int size_;
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default_barrier_reseter(unsigned int size) :
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size_(size)
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{
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}
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BOOST_THREAD_MOVABLE(default_barrier_reseter)
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//BOOST_THREAD_COPYABLE_AND_MOVABLE(default_barrier_reseter)
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default_barrier_reseter(default_barrier_reseter const& other) BOOST_NOEXCEPT :
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size_(other.size_)
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{
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}
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default_barrier_reseter(BOOST_THREAD_RV_REF(default_barrier_reseter) other) BOOST_NOEXCEPT :
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size_(BOOST_THREAD_RV(other).size_)
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{
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}
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unsigned int operator()()
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{
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return size_;
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}
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};
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struct void_functor_barrier_reseter
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{
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unsigned int size_;
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void_completion_function fct_;
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template <typename F>
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void_functor_barrier_reseter(unsigned int size, BOOST_THREAD_RV_REF(F) funct)
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: size_(size), fct_(boost::move(funct))
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{}
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template <typename F>
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void_functor_barrier_reseter(unsigned int size, F& funct)
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: size_(size), fct_(funct)
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{}
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BOOST_THREAD_MOVABLE(void_functor_barrier_reseter)
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//BOOST_THREAD_COPYABLE_AND_MOVABLE(void_functor_barrier_reseter)
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void_functor_barrier_reseter(void_functor_barrier_reseter const& other) BOOST_NOEXCEPT :
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size_(other.size_), fct_(other.fct_)
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{
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}
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void_functor_barrier_reseter(BOOST_THREAD_RV_REF(void_functor_barrier_reseter) other) BOOST_NOEXCEPT :
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size_(BOOST_THREAD_RV(other).size_), fct_(BOOST_THREAD_RV(other).fct_)
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//size_(BOOST_THREAD_RV(other).size_), fct_(boost::move(BOOST_THREAD_RV(other).fct_))
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{
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}
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unsigned int operator()()
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{
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fct_();
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return size_;
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}
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};
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struct void_fct_ptr_barrier_reseter
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{
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unsigned int size_;
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void(*fct_)();
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void_fct_ptr_barrier_reseter(unsigned int size, void(*funct)()) :
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size_(size), fct_(funct)
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{
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}
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BOOST_THREAD_MOVABLE(void_fct_ptr_barrier_reseter)
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//BOOST_THREAD_COPYABLE_AND_MOVABLE(void_fct_ptr_barrier_reseter)
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void_fct_ptr_barrier_reseter(void_fct_ptr_barrier_reseter const& other) BOOST_NOEXCEPT :
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size_(other.size_), fct_(other.fct_)
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{
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}
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void_fct_ptr_barrier_reseter(BOOST_THREAD_RV_REF(void_fct_ptr_barrier_reseter) other) BOOST_NOEXCEPT :
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size_(BOOST_THREAD_RV(other).size_), fct_(BOOST_THREAD_RV(other).fct_)
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{
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}
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unsigned int operator()()
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{
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fct_();
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return size_;
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}
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};
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}
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//BOOST_THREAD_DCL_MOVABLE(thread_detail::default_barrier_reseter)
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//BOOST_THREAD_DCL_MOVABLE(thread_detail::void_functor_barrier_reseter)
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//BOOST_THREAD_DCL_MOVABLE(thread_detail::void_fct_ptr_barrier_reseter)
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class barrier
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{
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static inline unsigned int check_counter(unsigned int count)
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{
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if (count == 0) boost::throw_exception(
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thread_exception(system::errc::invalid_argument, "barrier constructor: count cannot be zero."));
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return count;
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}
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struct dummy
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{
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};
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public:
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BOOST_THREAD_NO_COPYABLE( barrier)
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explicit barrier(unsigned int count) :
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m_count(check_counter(count)), m_generation(0), fct_(BOOST_THREAD_MAKE_RV_REF(thread_detail::default_barrier_reseter(count)))
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{
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}
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template <typename F>
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barrier(
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unsigned int count,
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BOOST_THREAD_RV_REF(F) funct,
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typename enable_if<
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typename is_void<typename result_of<F()>::type>::type, dummy*
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>::type=0
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)
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: m_count(check_counter(count)),
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m_generation(0),
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fct_(BOOST_THREAD_MAKE_RV_REF(thread_detail::void_functor_barrier_reseter(count,
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boost::move(funct)))
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)
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{
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}
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template <typename F>
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barrier(
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unsigned int count,
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F &funct,
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typename enable_if<
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typename is_void<typename result_of<F()>::type>::type, dummy*
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>::type=0
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)
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: m_count(check_counter(count)),
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m_generation(0),
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fct_(BOOST_THREAD_MAKE_RV_REF(thread_detail::void_functor_barrier_reseter(count,
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funct))
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)
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{
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}
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template <typename F>
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barrier(
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unsigned int count,
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BOOST_THREAD_RV_REF(F) funct,
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typename enable_if<
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typename is_same<typename result_of<F()>::type, unsigned int>::type, dummy*
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>::type=0
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)
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: m_count(check_counter(count)),
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m_generation(0),
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fct_(boost::move(funct))
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{
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}
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template <typename F>
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barrier(
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unsigned int count,
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F& funct,
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typename enable_if<
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typename is_same<typename result_of<F()>::type, unsigned int>::type, dummy*
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>::type=0
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)
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: m_count(check_counter(count)),
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m_generation(0),
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fct_(funct)
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{
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}
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barrier(unsigned int count, void(*funct)()) :
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m_count(check_counter(count)), m_generation(0),
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fct_(funct
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? BOOST_THREAD_MAKE_RV_REF(thread_detail::size_completion_function(BOOST_THREAD_MAKE_RV_REF(thread_detail::void_fct_ptr_barrier_reseter(count, funct))))
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: BOOST_THREAD_MAKE_RV_REF(thread_detail::size_completion_function(BOOST_THREAD_MAKE_RV_REF(thread_detail::default_barrier_reseter(count))))
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)
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{
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}
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barrier(unsigned int count, unsigned int(*funct)()) :
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m_count(check_counter(count)), m_generation(0),
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fct_(funct
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? BOOST_THREAD_MAKE_RV_REF(thread_detail::size_completion_function(funct))
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: BOOST_THREAD_MAKE_RV_REF(thread_detail::size_completion_function(BOOST_THREAD_MAKE_RV_REF(thread_detail::default_barrier_reseter(count))))
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)
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{
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}
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bool wait()
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{
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boost::unique_lock < boost::mutex > lock(m_mutex);
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unsigned int gen = m_generation;
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if (--m_count == 0)
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{
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m_generation++;
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m_count = static_cast<unsigned int>(fct_());
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BOOST_ASSERT(m_count != 0);
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lock.unlock();
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m_cond.notify_all();
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return true;
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}
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while (gen == m_generation)
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m_cond.wait(lock);
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return false;
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}
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void count_down_and_wait()
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{
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wait();
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}
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private:
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mutex m_mutex;
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condition_variable m_cond;
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unsigned int m_count;
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unsigned int m_generation;
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thread_detail::size_completion_function fct_;
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};
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} // namespace boost
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#include <boost/config/abi_suffix.hpp>
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#endif
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