143 lines
5.2 KiB
C++
143 lines
5.2 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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// Copyright (c) 2018, The Regents of the University of California, through
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// Lawrence Berkeley National Laboratory (subject to receipt of any required approvals
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// from the U.S. Dept. of Energy). All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// (1) Redistributions of source code must retain the above copyright notice, this
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// list of conditions and the following disclaimer.
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//
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// (2) Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// (3) Neither the name of the University of California, Lawrence Berkeley National
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// Laboratory, U.S. Dept. of Energy nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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// OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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// OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//=============================================================================
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//
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// This code is an extension of the algorithm presented in the paper:
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// Parallel Peak Pruning for Scalable SMP Contour Tree Computation.
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// Hamish Carr, Gunther Weber, Christopher Sewell, and James Ahrens.
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// Proceedings of the IEEE Symposium on Large Data Analysis and Visualization
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// (LDAV), October 2016, Baltimore, Maryland.
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//
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// The PPP2 algorithm and software were jointly developed by
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// Hamish Carr (University of Leeds), Gunther H. Weber (LBNL), and
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// Oliver Ruebel (LBNL)
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//==============================================================================
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#ifndef vtk_m_worklet_contourtree_distributed_tree_grafter_hypernode_when_comparator_h
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#define vtk_m_worklet_contourtree_distributed_tree_grafter_hypernode_when_comparator_h
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#include <vtkm/cont/ExecutionObjectBase.h>
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#include <vtkm/worklet/contourtree_augmented/Types.h>
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namespace vtkm
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{
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namespace worklet
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{
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namespace contourtree_distributed
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{
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namespace tree_grafter
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{
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/// Comparator used in TreeGrafter::ListNewHypernodes to sort the NewHypernodes arrays
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template <typename DeviceAdapter>
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class HyperNodeWhenComparatorImpl : public vtkm::worklet::WorkletMapField
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{
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public:
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using IdArrayPortalType =
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typename vtkm::worklet::contourtree_augmented::IdArrayType::template ExecutionTypes<
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DeviceAdapter>::PortalConst;
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// Default Constructor
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VTKM_EXEC_CONT
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HyperNodeWhenComparatorImpl(const IdArrayPortalType& whenTransferredPortal)
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: WhenTransferredPortal(whenTransferredPortal)
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{
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}
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VTKM_EXEC bool operator()(const vtkm::Id& leftSuperId, const vtkm::Id& rightSuperId) const
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{ // operator ()
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vtkm::Id maskedLeftWhen = vtkm::worklet::contourtree_augmented::MaskedIndex(
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this->WhenTransferredPortal.Get(leftSuperId));
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vtkm::Id maskedRightWhen = vtkm::worklet::contourtree_augmented::MaskedIndex(
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this->WhenTransferredPortal.Get(rightSuperId));
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if (maskedLeftWhen < maskedRightWhen)
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{
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return true;
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}
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else if (maskedLeftWhen > maskedRightWhen)
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{
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return false;
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}
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// tie break on ID to make it canonical
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else
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{
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return (leftSuperId < rightSuperId);
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}
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} // operator ()
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private:
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IdArrayPortalType WhenTransferredPortal;
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}; // HyperNodeWhenComparator
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class HyperNodeWhenComparator : public vtkm::cont::ExecutionObjectBase
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{
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public:
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VTKM_CONT
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HyperNodeWhenComparator(const vtkm::worklet::contourtree_augmented::IdArrayType& whenTransferred)
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: WhenTransferred(whenTransferred)
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{
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}
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template <typename DeviceAdapter>
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VTKM_CONT HyperNodeWhenComparatorImpl<DeviceAdapter> PrepareForExecution(
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DeviceAdapter device,
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vtkm::cont::Token& token) const
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{
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return HyperNodeWhenComparatorImpl<DeviceAdapter>(
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this->WhenTransferred.PrepareForInput(device, token));
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}
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private:
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const vtkm::worklet::contourtree_augmented::IdArrayType& WhenTransferred;
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};
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} // namespace tree_grafter
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} // namespace contourtree_distributed
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} // namespace worklet
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} // namespace vtkm
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#endif
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