mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 02:55:47 +00:00
a4d0b57ba2
* Add FindDeviceAdapterTagAndCall * Add support for multiple arguments to be passed to the functor in 'ForEachValidDevice' and 'FindDeviceAdapterTagAndCall'.
139 lines
4.4 KiB
C++
139 lines
4.4 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//
|
|
// Copyright 2016 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
|
|
// Copyright 2016 UT-Battelle, LLC.
|
|
// Copyright 2016 Los Alamos National Security.
|
|
//
|
|
// Under the terms of Contract DE-NA0003525 with NTESS,
|
|
// the U.S. Government retains certain rights in this software.
|
|
//
|
|
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
|
|
// Laboratory (LANL), the U.S. Government retains certain rights in
|
|
// this software.
|
|
//============================================================================
|
|
#ifndef vtk_m_cont_internal_DeviceAdapterListHelpers_h
|
|
#define vtk_m_cont_internal_DeviceAdapterListHelpers_h
|
|
|
|
#include <vtkm/ListTag.h>
|
|
#include <vtkm/cont/ErrorBadDevice.h>
|
|
#include <vtkm/cont/RuntimeDeviceTracker.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace cont
|
|
{
|
|
namespace internal
|
|
{
|
|
|
|
//============================================================================
|
|
template <typename FunctorType>
|
|
class ExecuteIfValidDeviceTag
|
|
{
|
|
private:
|
|
template <typename DeviceAdapter>
|
|
using EnableIfValid = std::enable_if<vtkm::cont::DeviceAdapterTraits<DeviceAdapter>::Valid>;
|
|
|
|
template <typename DeviceAdapter>
|
|
using EnableIfInvalid = std::enable_if<!vtkm::cont::DeviceAdapterTraits<DeviceAdapter>::Valid>;
|
|
|
|
public:
|
|
explicit ExecuteIfValidDeviceTag(const FunctorType& functor)
|
|
: Functor(functor)
|
|
{
|
|
}
|
|
|
|
template <typename DeviceAdapter, typename... Args>
|
|
typename EnableIfValid<DeviceAdapter>::type operator()(
|
|
DeviceAdapter device,
|
|
const vtkm::cont::RuntimeDeviceTracker& tracker,
|
|
Args&&... args) const
|
|
{
|
|
if (tracker.CanRunOn(device))
|
|
{
|
|
this->Functor(device, std::forward<Args>(args)...);
|
|
}
|
|
}
|
|
|
|
// do not generate code for invalid devices
|
|
template <typename DeviceAdapter, typename... Args>
|
|
typename EnableIfInvalid<DeviceAdapter>::type operator()(DeviceAdapter,
|
|
const vtkm::cont::RuntimeDeviceTracker&,
|
|
Args&&...) const
|
|
{
|
|
}
|
|
|
|
private:
|
|
FunctorType Functor;
|
|
};
|
|
|
|
/// Execute the given functor on each valid device in \c DeviceList.
|
|
///
|
|
template <typename DeviceList, typename Functor, typename... Args>
|
|
VTKM_CONT void ForEachValidDevice(DeviceList devices, const Functor& functor, Args&&... args)
|
|
{
|
|
auto tracker = vtkm::cont::GetGlobalRuntimeDeviceTracker();
|
|
|
|
ExecuteIfValidDeviceTag<Functor> wrapped(functor);
|
|
vtkm::ListForEach(wrapped, devices, tracker, std::forward<Args>(args)...);
|
|
}
|
|
|
|
//============================================================================
|
|
template <typename FunctorType>
|
|
class ExecuteIfSameDeviceId
|
|
{
|
|
public:
|
|
ExecuteIfSameDeviceId(FunctorType functor)
|
|
: Functor(functor)
|
|
{
|
|
}
|
|
|
|
template <typename DeviceAdapter, typename... Args>
|
|
void operator()(DeviceAdapter device,
|
|
vtkm::cont::DeviceAdapterId deviceId,
|
|
bool& status,
|
|
Args&&... args) const
|
|
{
|
|
if (vtkm::cont::DeviceAdapterTraits<DeviceAdapter>::GetId() == deviceId)
|
|
{
|
|
VTKM_ASSERT(status == false);
|
|
this->Functor(device, std::forward<Args>(args)...);
|
|
status = true;
|
|
}
|
|
}
|
|
|
|
private:
|
|
FunctorType Functor;
|
|
};
|
|
|
|
/// Finds the \c DeviceAdapterTag in \c DeviceList with id equal to deviceId
|
|
/// and executes the functor with the tag. Throws \c ErrorBadDevice if a valid
|
|
/// \c DeviceAdapterTag is not found.
|
|
///
|
|
template <typename DeviceList, typename Functor, typename... Args>
|
|
VTKM_CONT void FindDeviceAdapterTagAndCall(vtkm::cont::DeviceAdapterId deviceId,
|
|
DeviceList devices,
|
|
const Functor& functor,
|
|
Args&&... args)
|
|
{
|
|
bool status = false;
|
|
ExecuteIfSameDeviceId<Functor> wrapped(functor);
|
|
ForEachValidDevice(devices, wrapped, deviceId, status, std::forward<Args>(args)...);
|
|
if (!status)
|
|
{
|
|
std::string msg =
|
|
"Device with id " + std::to_string(deviceId) + " is either not in the list or is invalid";
|
|
throw vtkm::cont::ErrorBadDevice(msg);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} // vtkm::cont::internal
|
|
|
|
#endif // vtk_m_cont_internal_DeviceAdapterListHelpers_h
|