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https://gitlab.kitware.com/vtk/vtk-m
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8f7b0d18be
The buffer class encapsulates the movement of raw C arrays between host and devices. The `Buffer` class itself is not associated with any device. Instead, `Buffer` is used in conjunction with a new templated class named `DeviceAdapterMemoryManager` that can allocate data on a given device and transfer data as necessary. `DeviceAdapterMemoryManager` will eventually replace the more complicated device adapter classes that manage data on a device. The code in `DeviceAdapterMemoryManager` is actually enclosed in virtual methods. This allows us to limit the number of classes that need to be compiled for a device. Rather, the implementation of `DeviceAdapterMemoryManager` is compiled once with whatever compiler is necessary, and then the `RuntimeDeviceInformation` is used to get the correct object instance.
61 lines
2.2 KiB
C++
61 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_RuntimeDeviceInformation_h
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#define vtk_m_cont_RuntimeDeviceInformation_h
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#include <vtkm/cont/DeviceAdapterTag.h>
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#include <vtkm/cont/internal/DeviceAdapterMemoryManager.h>
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#include <vtkm/internal/ExportMacros.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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/// A class that can be used to determine if a given device adapter
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/// is supported on the current machine at runtime. This is very important
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/// for device adapters where a physical hardware requirements such as a GPU
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/// or a Accelerator Card is needed for support to exist.
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///
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///
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class VTKM_CONT_EXPORT RuntimeDeviceInformation
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{
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public:
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/// Returns the name corresponding to the device adapter id. If @a id is
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/// not recognized, `InvalidDeviceId` is returned. Queries for a
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/// name are all case-insensitive.
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VTKM_CONT
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DeviceAdapterNameType GetName(DeviceAdapterId id) const;
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/// Returns the id corresponding to the device adapter name. If @a name is
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/// not recognized, DeviceAdapterTagUndefined is returned.
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VTKM_CONT
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DeviceAdapterId GetId(DeviceAdapterNameType name) const;
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/// Returns true if the given device adapter is supported on the current
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/// machine.
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///
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VTKM_CONT
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bool Exists(DeviceAdapterId id) const;
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/// Returns a reference to a `DeviceAdapterMemoryManager` that will work with the
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/// given device. This method will throw an exception if the device id is not a
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/// real device (for example `DeviceAdapterTagAny`). If the device in question is
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/// not valid, a `DeviceAdapterMemoryManager` will be returned, but attempting to
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/// call any of the methods will result in a runtime exception.
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///
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VTKM_CONT
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vtkm::cont::internal::DeviceAdapterMemoryManagerBase& GetMemoryManager(DeviceAdapterId id) const;
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};
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}
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} // namespace vtkm::cont
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#endif //vtk_m_cont_RuntimeDeviceInformation_h
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