Kokkos_MemoryTraits.hpp

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#ifndef KOKKOS_MEMORYTRAITS_HPP
#define KOKKOS_MEMORYTRAITS_HPP
 
#include <impl/Kokkos_Traits.hpp>
#include <impl/Kokkos_Tags.hpp>
 
//----------------------------------------------------------------------------
 
namespace Kokkos {
 
enum MemoryTraitsFlags {
  Unmanaged    = 0x01,
  RandomAccess = 0x02,
  Atomic       = 0x04,
  Restrict     = 0x08,
  Aligned      = 0x10
};
 
template <unsigned T>
struct MemoryTraits {
  using memory_traits = MemoryTraits<T>;
  enum : bool {
    is_unmanaged = (unsigned(0) != (T & unsigned(Kokkos::Unmanaged)))
  };
  enum : bool {
    is_random_access = (unsigned(0) != (T & unsigned(Kokkos::RandomAccess)))
  };
  enum : bool { is_atomic = (unsigned(0) != (T & unsigned(Kokkos::Atomic))) };
  enum : bool {
    is_restrict = (unsigned(0) != (T & unsigned(Kokkos::Restrict)))
  };
  enum : bool { is_aligned = (unsigned(0) != (T & unsigned(Kokkos::Aligned))) };
};
 
}  // namespace Kokkos
 
//----------------------------------------------------------------------------
 
namespace Kokkos {
 
using MemoryManaged   = Kokkos::MemoryTraits<0>;
using MemoryUnmanaged = Kokkos::MemoryTraits<Kokkos::Unmanaged>;
using MemoryRandomAccess =
    Kokkos::MemoryTraits<Kokkos::Unmanaged | Kokkos::RandomAccess>;
 
}  // namespace Kokkos
 
//----------------------------------------------------------------------------
 
namespace Kokkos {
namespace Impl {
 
static_assert((0 < int(KOKKOS_MEMORY_ALIGNMENT)) &&
                  (0 == (int(KOKKOS_MEMORY_ALIGNMENT) &
                         (int(KOKKOS_MEMORY_ALIGNMENT) - 1))),
              "KOKKOS_MEMORY_ALIGNMENT must be a power of two");
 
enum : unsigned {
  MEMORY_ALIGNMENT           = KOKKOS_MEMORY_ALIGNMENT,
  MEMORY_ALIGNMENT_THRESHOLD = KOKKOS_MEMORY_ALIGNMENT_THRESHOLD
};
 
}  // namespace Impl
}  // namespace Kokkos
 
#endif /* #ifndef KOKKOS_MEMORYTRAITS_HPP */