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Kokkos_MemoryTraits.hpp
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Kokkos_MemoryTraits.hpp
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/*
//@HEADER
// ************************************************************************
//
// Kokkos v. 2.0
// Copyright (2014) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact H. Carter Edwards (hcedwar@sandia.gov)
//
// ************************************************************************
//@HEADER
*/
#ifndef KOKKOS_MEMORYTRAITS_HPP
#define KOKKOS_MEMORYTRAITS_HPP
#include <impl/Kokkos_Traits.hpp>
#include <impl/Kokkos_Tags.hpp>
//----------------------------------------------------------------------------
namespace
Kokkos
{
/** \brief Memory access traits for views, an extension point.
*
* These traits should be orthogonal. If there are dependencies then
* the MemoryTraits template must detect and enforce dependencies.
*
* A zero value is the default for a View, indicating that none of
* these traits are present.
*/
enum
MemoryTraitsFlags
{
Unmanaged
=
0x01
,
RandomAccess
=
0x02
,
Atomic
=
0x04
};
template
<
unsigned
T
>
struct
MemoryTraits
{
//! Tag this class as a kokkos memory traits:
typedef
MemoryTraits
memory_traits
;
enum
{
Unmanaged
=
T
&
unsigned
(
Kokkos
::
Unmanaged
)
};
enum
{
RandomAccess
=
T
&
unsigned
(
Kokkos
::
RandomAccess
)
};
enum
{
Atomic
=
T
&
unsigned
(
Kokkos
::
Atomic
)
};
};
}
// namespace Kokkos
//----------------------------------------------------------------------------
namespace
Kokkos
{
typedef
Kokkos
::
MemoryTraits
<
0
>
MemoryManaged
;
typedef
Kokkos
::
MemoryTraits
<
Kokkos
::
Unmanaged
>
MemoryUnmanaged
;
typedef
Kokkos
::
MemoryTraits
<
Kokkos
::
Unmanaged
|
Kokkos
::
RandomAccess
>
MemoryRandomAccess
;
}
// namespace Kokkos
//----------------------------------------------------------------------------
namespace
Kokkos
{
namespace
Impl
{
/** \brief Memory alignment settings
*
* Sets global value for memory alignment. Must be a power of two!
* Enable compatibility of views from different devices with static stride.
* Use compiler flag to enable overwrites.
*/
enum
{
MEMORY_ALIGNMENT
=
#if defined( KOKKOS_MEMORY_ALIGNMENT )
(
1
<<
Kokkos
::
Impl
::
power_of_two
<
KOKKOS_MEMORY_ALIGNMENT
>::
value
)
#else
(
1
<<
Kokkos
::
Impl
::
power_of_two
<
128
>::
value
)
#endif
,
MEMORY_ALIGNMENT_THRESHOLD
=
4
};
}
//namespace Impl
}
// namespace Kokkos
#endif
/* #ifndef KOKKOS_MEMORYTRAITS_HPP */
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