mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
a47fd42bc1
Often when a user gives memory to an `ArrayHandle`, she wants data to be written into the memory given to be used elsewhere. Previously, the `Buffer` objects would delete the given buffer as soon as a write buffer was created elsewhere. That was a problem if a user wants VTK-m to write results right into a given buffer. Instead, when a user provides memory, "pin" that memory so that the `ArrayHandle` never deletes it.
59 lines
2.1 KiB
C++
59 lines
2.1 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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//
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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_internal_DeviceAdapterMemoryManagerShared_h
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#define vtk_m_cont_internal_DeviceAdapterMemoryManagerShared_h
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#include <vtkm/cont/internal/DeviceAdapterMemoryManager.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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namespace internal
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{
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/// \brief An implementation of DeviceAdapterMemoryManager for devices that share memory with the
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/// host.
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///
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/// Device adapters that have shared memory with the host can implement their
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/// `DeviceAdapterMemoryManager` as a simple subclass of this.
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///
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class VTKM_CONT_EXPORT DeviceAdapterMemoryManagerShared : public DeviceAdapterMemoryManagerBase
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{
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public:
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VTKM_CONT BufferInfo Allocate(vtkm::BufferSizeType size) const override;
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VTKM_CONT virtual vtkm::cont::internal::BufferInfo CopyHostToDevice(
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const vtkm::cont::internal::BufferInfo& src) const override;
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VTKM_CONT virtual void CopyHostToDevice(
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const vtkm::cont::internal::BufferInfo& src,
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const vtkm::cont::internal::BufferInfo& dest) const override;
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VTKM_CONT virtual vtkm::cont::internal::BufferInfo CopyDeviceToHost(
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const vtkm::cont::internal::BufferInfo& src) const override;
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VTKM_CONT virtual void CopyDeviceToHost(
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const vtkm::cont::internal::BufferInfo& src,
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const vtkm::cont::internal::BufferInfo& dest) const override;
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VTKM_CONT virtual vtkm::cont::internal::BufferInfo CopyDeviceToDevice(
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const vtkm::cont::internal::BufferInfo& src) const override;
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VTKM_CONT virtual void CopyDeviceToDevice(
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const vtkm::cont::internal::BufferInfo& src,
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const vtkm::cont::internal::BufferInfo& dest) const override;
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};
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}
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}
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} // namespace vtkm::cont::internal
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#endif //vtk_m_cont_internal_DeviceAdapterMemoryManagerShared_h
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