mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
72 lines
1.9 KiB
C++
72 lines
1.9 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_cuda_internal_DeviceAdapterTimerImplementationCuda_h
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#define vtk_m_cont_cuda_internal_DeviceAdapterTimerImplementationCuda_h
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#include <vtkm/cont/vtkm_cont_export.h>
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#include <vtkm/Types.h>
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#include <vtkm/cont/DeviceAdapterAlgorithm.h>
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#include <vtkm/cont/cuda/internal/DeviceAdapterTagCuda.h>
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#include <cuda.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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///
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/// Specialization of DeviceAdapterTimerImplementation for CUDA
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/// CUDA contains its own high resolution timer that are able
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/// to track how long it takes to execute async kernels.
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/// If we simply measured time on the CPU it would incorrectly
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/// just capture how long it takes to launch a kernel.
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template <>
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class VTKM_CONT_EXPORT DeviceAdapterTimerImplementation<vtkm::cont::DeviceAdapterTagCuda>
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{
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public:
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VTKM_CONT DeviceAdapterTimerImplementation();
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VTKM_CONT ~DeviceAdapterTimerImplementation();
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VTKM_CONT void Reset();
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VTKM_CONT void Start();
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VTKM_CONT void Stop();
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VTKM_CONT bool Started() const;
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VTKM_CONT bool Stopped() const;
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VTKM_CONT bool Ready() const;
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VTKM_CONT vtkm::Float64 GetElapsedTime() const;
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private:
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// Copying CUDA events is problematic.
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DeviceAdapterTimerImplementation(
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const DeviceAdapterTimerImplementation<vtkm::cont::DeviceAdapterTagCuda>&) = delete;
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void operator=(const DeviceAdapterTimerImplementation<vtkm::cont::DeviceAdapterTagCuda>&) =
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delete;
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bool StartReady;
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bool StopReady;
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cudaEvent_t StartEvent;
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cudaEvent_t StopEvent;
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};
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}
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} // namespace vtkm::cont
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#endif
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