101 lines
3.6 KiB
C++
101 lines
3.6 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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// 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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// Copyright 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_cont_StorageVirtual_hxx
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#define vtk_m_cont_StorageVirtual_hxx
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#include <vtkm/cont/StorageAny.hxx>
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#include <vtkm/cont/TryExecute.h>
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#include <vtkm/cont/internal/TransferInfo.h>
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#include <vtkm/cont/internal/VirtualObjectTransferShareWithControl.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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template <typename DerivedPortal>
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struct TransferToDevice
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{
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template <typename DeviceAdapterTag, typename Payload, typename... Args>
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inline bool operator()(DeviceAdapterTag devId, Payload&& payload, Args&&... args) const
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{
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using TransferType = cont::internal::VirtualObjectTransfer<DerivedPortal, DeviceAdapterTag>;
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using shared_memory_transfer =
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std::is_base_of<vtkm::cont::internal::VirtualObjectTransferShareWithControl<DerivedPortal>,
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TransferType>;
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return this->Transfer(
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devId, shared_memory_transfer{}, std::forward<Payload>(payload), std::forward<Args>(args)...);
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}
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template <typename DeviceAdapterTag, typename Payload, typename... Args>
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inline bool Transfer(DeviceAdapterTag devId,
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std::true_type,
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Payload&& payload,
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Args&&... args) const
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{ //shared memory transfer so we just need
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auto smp_ptr = new DerivedPortal(std::forward<Args>(args)...);
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auto host = std::unique_ptr<DerivedPortal>(smp_ptr);
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payload.updateDevice(devId, std::move(host), smp_ptr, nullptr);
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return true;
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}
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template <typename DeviceAdapterTag, typename Payload, typename... Args>
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inline bool Transfer(DeviceAdapterTag devId,
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std::false_type,
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Payload&& payload,
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Args&&... args) const
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{ //separate memory transfer
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//construct all new transfer payload
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using TransferType = cont::internal::VirtualObjectTransfer<DerivedPortal, DeviceAdapterTag>;
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auto host = std::unique_ptr<DerivedPortal>(new DerivedPortal(std::forward<Args>(args)...));
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auto transfer = std::make_shared<TransferType>(host.get());
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auto device = transfer->PrepareForExecution(true);
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payload.updateDevice(devId, std::move(host), device, std::static_pointer_cast<void>(transfer));
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return true;
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}
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};
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}
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template <typename DerivedPortal, typename... Args>
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inline void make_transferToDevice(vtkm::cont::DeviceAdapterId devId, Args&&... args)
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{
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vtkm::cont::TryExecuteOnDevice(
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devId, detail::TransferToDevice<DerivedPortal>{}, std::forward<Args>(args)...);
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}
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template <typename DerivedPortal, typename Payload, typename... Args>
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inline void make_hostPortal(Payload&& payload, Args&&... args)
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{
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auto host = std::unique_ptr<DerivedPortal>(new DerivedPortal(std::forward<Args>(args)...));
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payload.updateHost(std::move(host));
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}
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}
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} // namespace vtkm::cont::
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#endif
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