vtk-m2/vtkm/cont/ArrayHandleCounting.h
Kenneth Moreland 7ff62d8d6b Explicitly add destructors and copy constructors to ArrayHandle classes
Under CUDA, the default constructors and destructors created are exported
as __host__ and __device__, which causes problems because they used a boost
pointer that only works on the host. The explicit copy constructors and
destructors do the same thing as the default ones except declared to only
work on the host.
2015-10-21 07:50:52 -06:00

162 lines
4.7 KiB
C++

//============================================================================
// Copyright (c) Kitware, Inc.
// All rights reserved.
// See LICENSE.txt for details.
// This software is distributed WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE. See the above copyright notice for more information.
//
// Copyright 2014 Sandia Corporation.
// Copyright 2014 UT-Battelle, LLC.
// Copyright 2014 Los Alamos National Security.
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
// Laboratory (LANL), the U.S. Government retains certain rights in
// this software.
//============================================================================
#ifndef vtk_m_cont_ArrayHandleCounting_h
#define vtk_m_cont_ArrayHandleCounting_h
#include <vtkm/cont/ArrayHandle.h>
#include <vtkm/cont/StorageImplicit.h>
#include <vtkm/VecTraits.h>
namespace vtkm {
namespace cont {
namespace internal {
/// \brief An implicit array portal that returns an counting value.
template <class CountingValueType>
class ArrayPortalCounting
{
typedef typename vtkm::VecTraits<CountingValueType>::ComponentType
ComponentType;
public:
typedef CountingValueType ValueType;
VTKM_EXEC_CONT_EXPORT
ArrayPortalCounting() :
Start(0),
Step(1),
NumberOfValues(0)
{ }
VTKM_EXEC_CONT_EXPORT
ArrayPortalCounting(ValueType start, ValueType step, vtkm::Id numValues) :
Start(start),
Step(step),
NumberOfValues(numValues)
{ }
template<typename OtherValueType>
VTKM_EXEC_CONT_EXPORT
ArrayPortalCounting(const ArrayPortalCounting<OtherValueType> &src)
: Start(src.Start),
Step(src.Step),
NumberOfValues(src.NumberOfValues)
{ }
template<typename OtherValueType>
VTKM_EXEC_CONT_EXPORT
ArrayPortalCounting<ValueType> &operator=(
const ArrayPortalCounting<OtherValueType> &src)
{
this->Start= src.Start;
this->Step = src.Step;
this->NumberOfValues = src.NumberOfValues;
return *this;
}
VTKM_EXEC_CONT_EXPORT
vtkm::Id GetNumberOfValues() const { return this->NumberOfValues; }
VTKM_EXEC_CONT_EXPORT
ValueType Get(vtkm::Id index) const {
return ValueType(this->Start +
this->Step*ValueType(static_cast<ComponentType>(index)));
}
private:
ValueType Start;
ValueType Step;
vtkm::Id NumberOfValues;
};
/// A convenience class that provides a typedef to the appropriate tag for
/// a counting storage.
template<typename ConstantValueType>
struct ArrayHandleCountingTraits
{
typedef vtkm::cont::StorageTagImplicit<
vtkm::cont::internal::ArrayPortalCounting<ConstantValueType> > Tag;
};
} // namespace internal
/// ArrayHandleCounting is a specialization of ArrayHandle. By default it
/// contains a increment value, that is increment for each step between zero
/// and the passed in length
template <typename CountingValueType>
class ArrayHandleCounting
: public vtkm::cont::ArrayHandle <
CountingValueType,
typename internal::ArrayHandleCountingTraits<CountingValueType>::Tag
>
{
typedef vtkm::cont::ArrayHandle <
CountingValueType,
typename internal::ArrayHandleCountingTraits<CountingValueType>::Tag
> Superclass;
public:
typedef typename Superclass::ValueType ValueType;
typedef typename Superclass::StorageTag StorageTag;
VTKM_CONT_EXPORT
ArrayHandleCounting(CountingValueType start,
CountingValueType step,
vtkm::Id length)
:Superclass(typename Superclass::PortalConstControl(start, step, length))
{
}
VTKM_CONT_EXPORT
ArrayHandleCounting():Superclass() {}
VTKM_CONT_EXPORT
ArrayHandleCounting(const ArrayHandleCounting<CountingValueType> &src)
: Superclass(src)
{ }
VTKM_CONT_EXPORT
ArrayHandleCounting(const vtkm::cont::ArrayHandle<ValueType,StorageTag> &src)
: Superclass(src) { }
VTKM_CONT_EXPORT
virtual ~ArrayHandleCounting() { }
};
/// A convenience function for creating an ArrayHandleCounting. It takes the
/// value to start counting from and and the number of times to increment.
template<typename CountingValueType>
VTKM_CONT_EXPORT
vtkm::cont::ArrayHandleCounting<CountingValueType>
make_ArrayHandleCounting(CountingValueType start,
CountingValueType step,
vtkm::Id length)
{
return vtkm::cont::ArrayHandleCounting<CountingValueType>(start,
step,
length);
}
}
} // namespace vtkm::cont
#endif //vtk_m_cont_ArrayHandleCounting_h