yuzu/externals/vcpkg/packages/boost-thread_x64-windows/include/boost/thread/barrier.hpp

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// Copyright (C) 2002-2003
// David Moore, William E. Kempf
// Copyright (C) 2007-8 Anthony Williams
// (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)
#ifndef BOOST_BARRIER_JDM030602_HPP
#define BOOST_BARRIER_JDM030602_HPP
#include <boost/thread/detail/config.hpp>
#include <boost/thread/detail/delete.hpp>
#include <boost/throw_exception.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/lock_types.hpp>
#include <boost/thread/condition_variable.hpp>
#include <string>
#include <stdexcept>
#include <boost/thread/detail/nullary_function.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/type_traits/is_void.hpp>
#include <boost/core/enable_if.hpp>
#include <boost/utility/result_of.hpp>
#include <boost/config/abi_prefix.hpp>
namespace boost
{
namespace thread_detail
{
typedef detail::nullary_function<void()> void_completion_function;
typedef detail::nullary_function<size_t()> size_completion_function;
struct default_barrier_reseter
{
unsigned int size_;
default_barrier_reseter(unsigned int size) :
size_(size)
{
}
BOOST_THREAD_MOVABLE(default_barrier_reseter)
//BOOST_THREAD_COPYABLE_AND_MOVABLE(default_barrier_reseter)
default_barrier_reseter(default_barrier_reseter const& other) BOOST_NOEXCEPT :
size_(other.size_)
{
}
default_barrier_reseter(BOOST_THREAD_RV_REF(default_barrier_reseter) other) BOOST_NOEXCEPT :
size_(BOOST_THREAD_RV(other).size_)
{
}
unsigned int operator()()
{
return size_;
}
};
struct void_functor_barrier_reseter
{
unsigned int size_;
void_completion_function fct_;
template <typename F>
void_functor_barrier_reseter(unsigned int size, BOOST_THREAD_RV_REF(F) funct)
: size_(size), fct_(boost::move(funct))
{}
template <typename F>
void_functor_barrier_reseter(unsigned int size, F& funct)
: size_(size), fct_(funct)
{}
BOOST_THREAD_MOVABLE(void_functor_barrier_reseter)
//BOOST_THREAD_COPYABLE_AND_MOVABLE(void_functor_barrier_reseter)
void_functor_barrier_reseter(void_functor_barrier_reseter const& other) BOOST_NOEXCEPT :
size_(other.size_), fct_(other.fct_)
{
}
void_functor_barrier_reseter(BOOST_THREAD_RV_REF(void_functor_barrier_reseter) other) BOOST_NOEXCEPT :
size_(BOOST_THREAD_RV(other).size_), fct_(BOOST_THREAD_RV(other).fct_)
//size_(BOOST_THREAD_RV(other).size_), fct_(boost::move(BOOST_THREAD_RV(other).fct_))
{
}
unsigned int operator()()
{
fct_();
return size_;
}
};
struct void_fct_ptr_barrier_reseter
{
unsigned int size_;
void(*fct_)();
void_fct_ptr_barrier_reseter(unsigned int size, void(*funct)()) :
size_(size), fct_(funct)
{
}
BOOST_THREAD_MOVABLE(void_fct_ptr_barrier_reseter)
//BOOST_THREAD_COPYABLE_AND_MOVABLE(void_fct_ptr_barrier_reseter)
void_fct_ptr_barrier_reseter(void_fct_ptr_barrier_reseter const& other) BOOST_NOEXCEPT :
size_(other.size_), fct_(other.fct_)
{
}
void_fct_ptr_barrier_reseter(BOOST_THREAD_RV_REF(void_fct_ptr_barrier_reseter) other) BOOST_NOEXCEPT :
size_(BOOST_THREAD_RV(other).size_), fct_(BOOST_THREAD_RV(other).fct_)
{
}
unsigned int operator()()
{
fct_();
return size_;
}
};
}
//BOOST_THREAD_DCL_MOVABLE(thread_detail::default_barrier_reseter)
//BOOST_THREAD_DCL_MOVABLE(thread_detail::void_functor_barrier_reseter)
//BOOST_THREAD_DCL_MOVABLE(thread_detail::void_fct_ptr_barrier_reseter)
class barrier
{
static inline unsigned int check_counter(unsigned int count)
{
if (count == 0) boost::throw_exception(
thread_exception(system::errc::invalid_argument, "barrier constructor: count cannot be zero."));
return count;
}
struct dummy
{
};
public:
BOOST_THREAD_NO_COPYABLE( barrier)
explicit barrier(unsigned int count) :
m_count(check_counter(count)), m_generation(0), fct_(BOOST_THREAD_MAKE_RV_REF(thread_detail::default_barrier_reseter(count)))
{
}
template <typename F>
barrier(
unsigned int count,
BOOST_THREAD_RV_REF(F) funct,
typename enable_if<
typename is_void<typename result_of<F()>::type>::type, dummy*
>::type=0
)
: m_count(check_counter(count)),
m_generation(0),
fct_(BOOST_THREAD_MAKE_RV_REF(thread_detail::void_functor_barrier_reseter(count,
boost::move(funct)))
)
{
}
template <typename F>
barrier(
unsigned int count,
F &funct,
typename enable_if<
typename is_void<typename result_of<F()>::type>::type, dummy*
>::type=0
)
: m_count(check_counter(count)),
m_generation(0),
fct_(BOOST_THREAD_MAKE_RV_REF(thread_detail::void_functor_barrier_reseter(count,
funct))
)
{
}
template <typename F>
barrier(
unsigned int count,
BOOST_THREAD_RV_REF(F) funct,
typename enable_if<
typename is_same<typename result_of<F()>::type, unsigned int>::type, dummy*
>::type=0
)
: m_count(check_counter(count)),
m_generation(0),
fct_(boost::move(funct))
{
}
template <typename F>
barrier(
unsigned int count,
F& funct,
typename enable_if<
typename is_same<typename result_of<F()>::type, unsigned int>::type, dummy*
>::type=0
)
: m_count(check_counter(count)),
m_generation(0),
fct_(funct)
{
}
barrier(unsigned int count, void(*funct)()) :
m_count(check_counter(count)), m_generation(0),
fct_(funct
? BOOST_THREAD_MAKE_RV_REF(thread_detail::size_completion_function(BOOST_THREAD_MAKE_RV_REF(thread_detail::void_fct_ptr_barrier_reseter(count, funct))))
: BOOST_THREAD_MAKE_RV_REF(thread_detail::size_completion_function(BOOST_THREAD_MAKE_RV_REF(thread_detail::default_barrier_reseter(count))))
)
{
}
barrier(unsigned int count, unsigned int(*funct)()) :
m_count(check_counter(count)), m_generation(0),
fct_(funct
? BOOST_THREAD_MAKE_RV_REF(thread_detail::size_completion_function(funct))
: BOOST_THREAD_MAKE_RV_REF(thread_detail::size_completion_function(BOOST_THREAD_MAKE_RV_REF(thread_detail::default_barrier_reseter(count))))
)
{
}
bool wait()
{
boost::unique_lock < boost::mutex > lock(m_mutex);
unsigned int gen = m_generation;
if (--m_count == 0)
{
m_generation++;
m_count = static_cast<unsigned int>(fct_());
BOOST_ASSERT(m_count != 0);
lock.unlock();
m_cond.notify_all();
return true;
}
while (gen == m_generation)
m_cond.wait(lock);
return false;
}
void count_down_and_wait()
{
wait();
}
private:
mutex m_mutex;
condition_variable m_cond;
unsigned int m_count;
unsigned int m_generation;
thread_detail::size_completion_function fct_;
};
} // namespace boost
#include <boost/config/abi_suffix.hpp>
#endif