/usr/include/trilinos/impl/Kokkos_ViewCtor.hpp is in libtrilinos-kokkos-dev 12.12.1-5.
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// Kokkos v. 2.0
// Copyright (2014) Sandia Corporation
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#ifndef KOKKOS_EXPERIMENTAL_IMPL_VIEW_CTOR_PROP_HPP
#define KOKKOS_EXPERIMENTAL_IMPL_VIEW_CTOR_PROP_HPP
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
namespace Kokkos {
/* For backward compatibility */
struct ViewAllocateWithoutInitializing {
const std::string label ;
ViewAllocateWithoutInitializing() : label() {}
explicit
ViewAllocateWithoutInitializing( const std::string & arg_label ) : label( arg_label ) {}
explicit
ViewAllocateWithoutInitializing( const char * const arg_label ) : label( arg_label ) {}
};
} /* namespace Kokkos */
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Impl {
struct WithoutInitializing_t {};
struct AllowPadding_t {};
struct NullSpace_t {};
//----------------------------------------------------------------------------
/**\brief Whether a type can be used for a view label */
template < typename >
struct is_view_label : public std::false_type {};
template<>
struct is_view_label< std::string > : public std::true_type {};
template< unsigned N >
struct is_view_label< char[N] > : public std::true_type {};
template< unsigned N >
struct is_view_label< const char[N] > : public std::true_type {};
//----------------------------------------------------------------------------
template< typename ... P >
struct ViewCtorProp ;
/* std::integral_constant<unsigned,I> are dummy arguments
* that avoid duplicate base class errors
*/
template< unsigned I >
struct ViewCtorProp< void , std::integral_constant<unsigned,I> >
{
ViewCtorProp() = default ;
ViewCtorProp( const ViewCtorProp & ) = default ;
ViewCtorProp & operator = ( const ViewCtorProp & ) = default ;
template< typename P >
ViewCtorProp( const P & ) {}
};
/* Property flags have constexpr value */
template< typename P >
struct ViewCtorProp
< typename std::enable_if<
std::is_same< P , AllowPadding_t >::value ||
std::is_same< P , WithoutInitializing_t >::value
>::type
, P
>
{
ViewCtorProp() = default ;
ViewCtorProp( const ViewCtorProp & ) = default ;
ViewCtorProp & operator = ( const ViewCtorProp & ) = default ;
typedef P type ;
ViewCtorProp( const type & ) {}
static constexpr type value = type();
};
/* Map input label type to std::string */
template< typename Label >
struct ViewCtorProp
< typename std::enable_if< is_view_label< Label >::value >::type
, Label
>
{
ViewCtorProp() = default ;
ViewCtorProp( const ViewCtorProp & ) = default ;
ViewCtorProp & operator = ( const ViewCtorProp & ) = default ;
typedef std::string type ;
ViewCtorProp( const type & arg ) : value( arg ) {}
ViewCtorProp( type && arg ) : value( arg ) {}
type value ;
};
template< typename Space >
struct ViewCtorProp
< typename std::enable_if<
Kokkos::Impl::is_memory_space<Space>::value ||
Kokkos::Impl::is_execution_space<Space>::value
>::type
, Space
>
{
ViewCtorProp() = default ;
ViewCtorProp( const ViewCtorProp & ) = default ;
ViewCtorProp & operator = ( const ViewCtorProp & ) = default ;
typedef Space type ;
ViewCtorProp( const type & arg ) : value( arg ) {}
type value ;
};
template< typename T >
struct ViewCtorProp < void , T * >
{
ViewCtorProp() = default ;
ViewCtorProp( const ViewCtorProp & ) = default ;
ViewCtorProp & operator = ( const ViewCtorProp & ) = default ;
typedef T * type ;
KOKKOS_INLINE_FUNCTION
ViewCtorProp( const type arg ) : value( arg ) {}
type value ;
};
template< typename ... P >
struct ViewCtorProp : public ViewCtorProp< void , P > ...
{
private:
typedef Kokkos::Impl::has_condition< void , Kokkos::Impl::is_memory_space , P ... >
var_memory_space ;
typedef Kokkos::Impl::has_condition< void , Kokkos::Impl::is_execution_space , P ... >
var_execution_space ;
struct VOIDDUMMY{};
typedef Kokkos::Impl::has_condition< VOIDDUMMY , std::is_pointer , P ... >
var_pointer ;
public:
/* Flags for the common properties */
enum { has_memory_space = var_memory_space::value };
enum { has_execution_space = var_execution_space::value };
enum { has_pointer = var_pointer::value };
enum { has_label = Kokkos::Impl::has_type< std::string , P... >::value };
enum { allow_padding = Kokkos::Impl::has_type< AllowPadding_t , P... >::value };
enum { initialize = ! Kokkos::Impl::has_type< WithoutInitializing_t , P ... >::value };
typedef typename var_memory_space::type memory_space ;
typedef typename var_execution_space::type execution_space ;
typedef typename var_pointer::type pointer_type ;
/* Copy from a matching argument list.
* Requires std::is_same< P , ViewCtorProp< void , Args >::value ...
*/
template< typename ... Args >
inline
ViewCtorProp( Args const & ... args )
: ViewCtorProp< void , P >( args ) ...
{}
template< typename ... Args >
KOKKOS_INLINE_FUNCTION
ViewCtorProp( pointer_type arg0 , Args const & ... args )
: ViewCtorProp< void , pointer_type >( arg0 )
, ViewCtorProp< void , typename ViewCtorProp< void , Args >::type >( args ) ...
{}
/* Copy from a matching property subset */
template< typename ... Args >
ViewCtorProp( ViewCtorProp< Args ... > const & arg )
: ViewCtorProp< void , Args >( ((ViewCtorProp<void,Args> const &) arg ) ) ...
{}
};
} /* namespace Impl */
} /* namespace Kokkos */
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
#endif
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