mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
4345fe26b0
The number of bits in a `BitField` cannot be directly implied from the size of the buffer (because the buffer gets padded to the nearest sized word). Thus, the `BitField stored the number of bits in its own internals. Unfortunately, that caused issues when passing the `BitField` data between it and an `ArrayHandleBitField`. If the `ArrayHandleBitField` resized itself, the `BitField` would not see the new size because it ignored the new buffer size. To get around this problem, `BitField` now declares its own `BufferMetaData` that stores the number of bits. Now, since the number of bits is stored in the `Buffer` object, it is sufficient to just share the `Buffer` to synchronize all of the state.
88 lines
1.9 KiB
C++
88 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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#include <vtkm/cont/ArrayHandle.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 detail
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{
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VTKM_CONT void ArrayHandleReleaseResourcesExecution(
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const std::vector<vtkm::cont::internal::Buffer>& buffers)
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{
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vtkm::cont::Token token;
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for (auto&& buf : buffers)
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{
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buf.ReleaseDeviceResources();
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}
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}
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VTKM_CONT bool ArrayHandleIsOnDevice(const std::vector<vtkm::cont::internal::Buffer>& buffers,
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vtkm::cont::DeviceAdapterId device)
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{
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for (auto&& buf : buffers)
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{
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if (!buf.IsAllocatedOnDevice(device))
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{
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return false;
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}
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}
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return true;
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}
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}
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}
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} // namespace vtkm::cont::detail
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namespace
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{
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struct DeviceCheckFunctor
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{
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vtkm::cont::DeviceAdapterId FoundDevice = vtkm::cont::DeviceAdapterTagUndefined{};
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VTKM_CONT void operator()(vtkm::cont::DeviceAdapterId device,
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const std::vector<vtkm::cont::internal::Buffer>& buffers)
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{
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if (this->FoundDevice == vtkm::cont::DeviceAdapterTagUndefined{})
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{
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if (vtkm::cont::detail::ArrayHandleIsOnDevice(buffers, device))
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{
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this->FoundDevice = device;
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}
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}
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}
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};
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} // anonymous namespace
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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 detail
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{
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VTKM_CONT vtkm::cont::DeviceAdapterId ArrayHandleGetDeviceAdapterId(
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const std::vector<vtkm::cont::internal::Buffer>& buffers)
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{
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DeviceCheckFunctor functor;
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vtkm::ListForEach(functor, VTKM_DEFAULT_DEVICE_ADAPTER_LIST{}, buffers);
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return functor.FoundDevice;
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}
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}
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}
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} // namespace vtkm::cont::detail
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