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https://gitlab.kitware.com/vtk/vtk-m
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51e3b2bb1d
It's easy to put accidently put something that is not a valid tag in a ControlSignature or ExecutionSignature. Previously, when you did that you got a weird error at the end of a very long template instantiation chain that made it difficult to find the offending worklet. This adds some type checks when the dispatcher is instantated to check the signatures. It doesn't point directly to the signature or its parameter, but it is much closer.
78 lines
2.6 KiB
C++
78 lines
2.6 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_exec_arg_WorkIndex_h
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#define vtk_m_exec_arg_WorkIndex_h
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#include <vtkm/exec/arg/Fetch.h>
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#include <vtkm/exec/arg/ExecutionSignatureTagBase.h>
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namespace vtkm {
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namespace exec {
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namespace arg {
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/// \brief Aspect tag to use for getting the work index.
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///
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/// The \c AspectTagWorkIndex aspect tag causes the \c Fetch class to ignore
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/// whatever data is in the associated execution object and return the index.
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///
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struct AspectTagWorkIndex { };
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/// \brief The \c ExecutionSignature tag to use to get the work index
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///
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/// When a worklet is dispatched, it broken into pieces defined by the input
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/// domain and scheduled on independent threads. This tag in the \c
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/// ExecutionSignature passes the index for this work. \c WorkletBase contains
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/// a typedef that points to this class.
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///
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struct WorkIndex : vtkm::exec::arg::ExecutionSignatureTagBase
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{
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// The index does not really matter because the fetch is going to ignore it.
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// However, it still has to point to a valid parameter in the
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// ControlSignature because the templating is going to grab a fetch tag
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// whether we use it or not. 1 should be guaranteed to be valid since you
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// need at least one argument for the input domain.
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static const vtkm::IdComponent INDEX = 1;
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typedef vtkm::exec::arg::AspectTagWorkIndex AspectTag;
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};
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template<typename FetchTag, typename Invocation>
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struct Fetch<FetchTag, vtkm::exec::arg::AspectTagWorkIndex, Invocation, 1>
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{
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typedef vtkm::Id ValueType;
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VTKM_EXEC_EXPORT
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vtkm::Id Load(vtkm::Id index, const Invocation &) const
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{
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return index;
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}
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VTKM_EXEC_EXPORT
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void Store(vtkm::Id, const Invocation &, const ValueType &) const
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{
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// Store is a no-op.
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}
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};
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}
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}
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} // namespace vtkm::exec::arg
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#endif //vtk_m_exec_arg_WorkIndex_h
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