mirror of
https://gitlab.kitware.com/vtk/vtk-m
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76 lines
2.3 KiB
C++
76 lines
2.3 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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// 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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// Copyright 2015 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_exec_AtomicArrayExecutionObject_h
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#define vtk_m_exec_AtomicArrayExecutionObject_h
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#include <vtkm/ListTag.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/DeviceAdapter.h>
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namespace vtkm
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{
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namespace exec
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{
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template <typename T, typename Device>
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class AtomicArrayExecutionObject
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{
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public:
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using ValueType = T;
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VTKM_CONT
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AtomicArrayExecutionObject()
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: AtomicImplementation((vtkm::cont::ArrayHandle<T>()))
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{
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}
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template <typename StorageType>
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VTKM_CONT AtomicArrayExecutionObject(vtkm::cont::ArrayHandle<T, StorageType> handle)
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: AtomicImplementation(handle)
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{
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC
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T Add(vtkm::Id index, const T& value) const
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{
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return this->AtomicImplementation.Add(index, value);
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}
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//
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// Compare and Swap is an atomic exchange operation. If the value at
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// the index is equal to oldValue, then newValue is written to the index.
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// The operation was successful if return value is equal to oldValue
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//
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VTKM_SUPPRESS_EXEC_WARNINGS
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VTKM_EXEC
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T CompareAndSwap(vtkm::Id index, const T& newValue, const T& oldValue) const
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{
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return this->AtomicImplementation.CompareAndSwap(index, newValue, oldValue);
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}
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private:
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vtkm::cont::DeviceAdapterAtomicArrayImplementation<T, Device> AtomicImplementation;
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};
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}
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} // namespace vtkm::exec
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#endif //vtk_m_exec_AtomicArrayExecutionObject_h
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