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https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
ff687016ee
It is very easy to cause ODR violations with DeviceAdapterTagCuda. If you include that header from a C++ file and a CUDA file inside the same program we an ODR violation. The reasons is that the C++ versions will say the tag is invalid, and the CUDA will say the tag is valid. The solution to this is that any compilation unit that includes DeviceAdapterTagCuda from a version of VTK-m that has CUDA enabled must be invoked by the cuda compiler.
73 lines
2.2 KiB
C++
73 lines
2.2 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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#ifndef vtk_m_cont_ExecutionObjectBase_h
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#define vtk_m_cont_ExecutionObjectBase_h
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#include <vtkm/Types.h>
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#include <vtkm/cont/serial/internal/DeviceAdapterTagSerial.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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/// Base \c ExecutionObjectBase for execution objects to inherit from so that
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/// you can use an arbitrary object as a parameter in an execution environment
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/// function. Any subclass of \c ExecutionObjectBase must implement a
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/// \c PrepareForExecution method that takes a device adapter tag and returns
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/// an object for that device.
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///
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struct ExecutionObjectBase
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{
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};
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namespace internal
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{
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namespace detail
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{
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struct CheckPrepareForExecution
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{
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template <typename T>
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static auto check(T* p)
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-> decltype(p->PrepareForExecution(vtkm::cont::DeviceAdapterTagSerial{}), std::true_type());
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template <typename T>
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static auto check(...) -> std::false_type;
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};
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} // namespace detail
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template <typename T>
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using IsExecutionObjectBase =
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std::is_base_of<vtkm::cont::ExecutionObjectBase, typename std::decay<T>::type>;
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template <typename T>
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struct HasPrepareForExecution
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: decltype(detail::CheckPrepareForExecution::check<typename std::decay<T>::type>(nullptr))
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{
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};
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} // namespace internal
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}
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} // namespace vtkm::cont
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/// Checks that the argument is a proper execution object.
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///
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#define VTKM_IS_EXECUTION_OBJECT(execObject) \
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static_assert(::vtkm::cont::internal::IsExecutionObjectBase<execObject>::value, \
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"Provided type is not a subclass of vtkm::cont::ExecutionObjectBase."); \
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static_assert(::vtkm::cont::internal::HasPrepareForExecution<execObject>::value, \
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"Provided type does not have requisite PrepareForExecution method.")
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#endif //vtk_m_cont_ExecutionObjectBase_h
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