mirror of
https://gitlab.kitware.com/vtk/vtk-m
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107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_cont_arg_TransportTagAtomicArray_h
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#define vtk_m_cont_arg_TransportTagAtomicArray_h
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#include <vtkm/Types.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleVirtual.h>
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#include <vtkm/cont/StorageBasic.h>
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#include <vtkm/cont/StorageVirtual.h>
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#include <vtkm/cont/arg/Transport.h>
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#include <vtkm/cont/AtomicArray.h>
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namespace vtkm
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{
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namespace cont
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{
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namespace arg
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{
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/// \brief \c Transport tag for in-place arrays with atomic operations.
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///
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/// \c TransportTagAtomicArray is a tag used with the \c Transport class to
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/// transport \c ArrayHandle objects for data that is both input and output
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/// (that is, in place modification of array data). The array will be wrapped
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/// in a vtkm::exec::AtomicArray class that provides atomic operations (like
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/// add and compare/swap).
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///
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struct TransportTagAtomicArray
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{
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};
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template <typename T, typename Device>
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struct Transport<vtkm::cont::arg::TransportTagAtomicArray,
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vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagBasic>,
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Device>
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{
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using ExecObjectType = vtkm::exec::AtomicArrayExecutionObject<T, Device>;
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using ExecType = vtkm::cont::AtomicArray<T>;
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template <typename InputDomainType>
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VTKM_CONT ExecObjectType
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operator()(vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagBasic>& array,
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const InputDomainType&,
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vtkm::Id,
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vtkm::Id) const
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{
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// Note: we ignore the size of the domain because the randomly accessed
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// array might not have the same size depending on how the user is using
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// the array.
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ExecType obj(array);
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return obj.PrepareForExecution(Device());
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}
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};
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template <typename T, typename Device>
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struct Transport<vtkm::cont::arg::TransportTagAtomicArray,
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vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagVirtual>,
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Device>
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{
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using ExecObjectType = vtkm::exec::AtomicArrayExecutionObject<T, Device>;
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using ExecType = vtkm::cont::AtomicArray<T>;
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template <typename InputDomainType>
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VTKM_CONT ExecObjectType
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operator()(vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagVirtual>& array,
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const InputDomainType&,
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vtkm::Id,
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vtkm::Id) const
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{
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using ArrayHandleType = vtkm::cont::ArrayHandle<T>;
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const bool is_type = vtkm::cont::IsType<ArrayHandleType>(array);
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if (!is_type)
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{
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#if defined(VTKM_ENABLE_LOGGING)
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VTKM_LOG_CAST_FAIL(array, ArrayHandleType);
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#endif
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throw vtkm::cont::ErrorBadValue("Arrays being used as atomic's must always have storage that "
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"is of the type StorageTagBasic.");
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}
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ArrayHandleType handle = vtkm::cont::Cast<ArrayHandleType>(array);
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// Note: we ignore the size of the domain because the randomly accessed
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// array might not have the same size depending on how the user is using
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// the array.
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ExecType obj(handle);
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return obj.PrepareForExecution(Device());
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}
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};
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}
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}
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} // namespace vtkm::cont::arg
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#endif //vtk_m_cont_arg_TransportTagAtomicArray_h
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