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https://gitlab.kitware.com/vtk/vtk-m
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80 lines
3.1 KiB
C++
80 lines
3.1 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 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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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_cont_arg_Transport_h
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#define vtk_m_cont_arg_Transport_h
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namespace vtkm {
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namespace cont {
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namespace arg {
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/// \brief Class for transporting from the control to the execution environment.
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///
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/// The \c Transport class is used to transport data of a certain type from the
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/// control environment to the execution environment. It is used internally in
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/// VTK-m's dispatch mechanism.
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///
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/// \c Transport is a templated class with three arguments. The first argument
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/// is a tag declaring the mechanism of transport. The second argument is the
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/// type of data to transport. The third argument is device adapter tag for
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/// the device to move the data to.
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///
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/// There is no generic implementation of \c Transport. There are partial
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/// specializations of \c Transport for each mechanism supported. If you get a
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/// compiler error about an incomplete type for \c Transport, it means you used
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/// an invalid \c TransportTag or it is an invalid combination of data type or
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/// device adapter.
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///
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template<typename TransportTag,
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typename ContObjectType,
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typename DeviceAdapterTag>
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struct Transport
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#ifdef VTKM_DOXYGEN_ONLY
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{
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/// \brief The type used in the execution environment.
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///
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/// All \c Transport specializations are expected to declare a type named \c
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/// ExecObjectType that is the object type used in the execution environment.
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/// For example, for an \c ArrayHandle, the \c ExecObjectType is the portal
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/// used in the execution environment.
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///
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typedef typename ContObjectType::
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template ExecutionTypes<DeviceAdapterTag>::PortalConst ExecObjectType;
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/// \brief Send data to the execution environment.
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///
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/// All \c Transport specializations are expected to have a constant
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/// parenthesis operator that takes the data in the control environment and
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/// returns an object that is accessible in the execution environment. The
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/// operator also has a second argument that is the size of the dispatch that
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/// can be used, for example, to allocate data for an output array.
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///
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VTKM_CONT_EXPORT
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ExecObjectType operator()(const ContObjectType contData, vtkm::Id size) const;
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};
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#else // VTKM_DOXYGEN_ONLY
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;
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#endif // VTKM_DOXYGEN_ONLY
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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_Transport_h
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