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Merge pull request #7 from ericniebler/develop

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value_init and swap work on nvidia gpu's
This commit is contained in:
Eric Niebler 2014-05-01 15:32:58 -07:00
commit db7bba3259
2 changed files with 32 additions and 2 deletions
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7
include/boost/utility/swap.hpp
View File

@ -21,12 +21,15 @@
// avoid ambiguity when swapping objects of a Boost type that does
// not have its own boost::swap overload.
#include <algorithm> //for std::swap
#include <utility> //for std::swap (C++11)
#include <algorithm> //for std::swap (C++98)
#include <cstddef> //for std::size_t
#include <boost/config.hpp>
namespace boost_swap_impl
{
template<class T>
BOOST_GPU_ENABLED
void swap_impl(T& left, T& right)
{
using namespace std;//use std::swap if argument dependent lookup fails
@ -34,6 +37,7 @@ namespace boost_swap_impl
}
template<class T, std::size_t N>
BOOST_GPU_ENABLED
void swap_impl(T (& left)[N], T (& right)[N])
{
for (std::size_t i = 0; i < N; ++i)
@ -46,6 +50,7 @@ namespace boost_swap_impl
namespace boost
{
template<class T1, class T2>
BOOST_GPU_ENABLED
void swap(T1& left, T2& right)
{
::boost_swap_impl::swap_impl(left, right);

27
include/boost/utility/value_init.hpp
View File

@ -71,12 +71,14 @@ class initialized
#endif
remove_const<T>::type data;
BOOST_GPU_ENABLED
wrapper()
:
data()
{
}
BOOST_GPU_ENABLED
wrapper(T const & arg)
:
data(arg)
@ -90,6 +92,7 @@ class initialized
#endif
aligned_storage<sizeof(wrapper), alignment_of<wrapper>::value>::type x;
BOOST_GPU_ENABLED
wrapper * wrapper_address() const
{
return static_cast<wrapper *>( static_cast<void*>(&x));
@ -97,6 +100,7 @@ class initialized
public :
BOOST_GPU_ENABLED
initialized()
{
#if BOOST_DETAIL_VALUE_INIT_WORKAROUND
@ -105,16 +109,19 @@ class initialized
new (wrapper_address()) wrapper();
}
BOOST_GPU_ENABLED
initialized(initialized const & arg)
{
new (wrapper_address()) wrapper( static_cast<wrapper const &>(*(arg.wrapper_address())));
}
BOOST_GPU_ENABLED
explicit initialized(T const & arg)
{
new (wrapper_address()) wrapper(arg);
}
BOOST_GPU_ENABLED
initialized & operator=(initialized const & arg)
{
// Assignment is only allowed when T is non-const.
@ -123,31 +130,37 @@ class initialized
return *this;
}
BOOST_GPU_ENABLED
~initialized()
{
wrapper_address()->wrapper::~wrapper();
}
BOOST_GPU_ENABLED
T const & data() const
{
return wrapper_address()->data;
}
BOOST_GPU_ENABLED
T& data()
{
return wrapper_address()->data;
}
BOOST_GPU_ENABLED
void swap(initialized & arg)
{
::boost::swap( this->data(), arg.data() );
}
BOOST_GPU_ENABLED
operator T const &() const
{
return wrapper_address()->data;
}
BOOST_GPU_ENABLED
operator T&()
{
return wrapper_address()->data;
@ -156,18 +169,21 @@ class initialized
} ;
template<class T>
BOOST_GPU_ENABLED
T const& get ( initialized<T> const& x )
{
return x.data() ;
}
template<class T>
BOOST_GPU_ENABLED
T& get ( initialized<T>& x )
{
return x.data() ;
}
template<class T>
BOOST_GPU_ENABLED
void swap ( initialized<T> & lhs, initialized<T> & rhs )
{
lhs.swap(rhs) ;
@ -183,31 +199,37 @@ class value_initialized
public :
BOOST_GPU_ENABLED
value_initialized()
:
m_data()
{ }
BOOST_GPU_ENABLED
T const & data() const
{
return m_data.data();
}
BOOST_GPU_ENABLED
T& data()
{
return m_data.data();
}
BOOST_GPU_ENABLED
void swap(value_initialized & arg)
{
m_data.swap(arg.m_data);
}
BOOST_GPU_ENABLED
operator T const &() const
{
return m_data;
}
BOOST_GPU_ENABLED
operator T&()
{
return m_data;
@ -216,18 +238,21 @@ class value_initialized
template<class T>
BOOST_GPU_ENABLED
T const& get ( value_initialized<T> const& x )
{
return x.data() ;
}
template<class T>
BOOST_GPU_ENABLED
T& get ( value_initialized<T>& x )
{
return x.data() ;
}
template<class T>
BOOST_GPU_ENABLED
void swap ( value_initialized<T> & lhs, value_initialized<T> & rhs )
{
lhs.swap(rhs) ;
@ -238,7 +263,7 @@ class initialized_value_t
{
public :
template <class T> operator T() const
template <class T> BOOST_GPU_ENABLED operator T() const
{
return initialized<T>().data();
}