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https://gitlab.kitware.com/vtk/vtk-m
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1eea0bee12
TBB 2020 introduced a new class called `task_group`. TBB 2021 removed the old class `task` as its functionality was replaced by `task_group`. Our parallel radix sort for TBB was implemented using `task`s, so change it to use `task_group` (which actually cleans up the code a bit).
152 lines
4.6 KiB
C++
152 lines
4.6 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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//
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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 2010, Takuya Akiba
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Takuya Akiba nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <vtkm/cont/internal/ParallelRadixSort.h>
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#if defined(VTKM_MSVC)
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// TBB's header include a #pragma comment(lib,"tbb.lib") line to make all
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// consuming libraries link to tbb, this is bad behavior in a header
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// based project
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#pragma push_macro("__TBB_NO_IMPLICITLINKAGE")
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#define __TBB_NO_IMPLICIT_LINKAGE 1
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#endif // defined(VTKM_MSVC)
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// TBB includes windows.h, so instead we want to include windows.h with the
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// correct settings so that we don't clobber any existing function
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#include <vtkm/internal/Windows.h>
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#include <tbb/tbb.h>
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#include <thread>
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#if defined(VTKM_MSVC)
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#pragma pop_macro("__TBB_NO_IMPLICITLINKAGE")
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#endif
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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 tbb
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{
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namespace sort
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{
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const size_t MAX_CORES = std::thread::hardware_concurrency();
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#if TBB_VERSION_MAJOR < 2020
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// Simple TBB task wrapper around a generic functor.
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template <typename FunctorType>
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struct TaskWrapper : public ::tbb::task
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{
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FunctorType Functor;
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TaskWrapper(FunctorType f)
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: Functor(f)
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{
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}
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::tbb::task* execute()
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{
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this->Functor(this);
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return nullptr;
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}
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};
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struct RadixThreaderTBB
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{
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size_t GetAvailableCores() const { return MAX_CORES; }
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template <typename TaskType>
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void RunParentTask(TaskType task) const
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{
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using Task = TaskWrapper<TaskType>;
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Task& root = *new (::tbb::task::allocate_root()) Task(task);
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::tbb::task::spawn_root_and_wait(root);
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}
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template <typename TaskType>
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void RunChildTasks(TaskWrapper<TaskType>* wrapper, TaskType left, TaskType right) const
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{
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using Task = TaskWrapper<TaskType>;
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::tbb::empty_task& p = *new (wrapper->allocate_continuation())::tbb::empty_task();
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Task& lchild = *new (p.allocate_child()) Task(left);
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Task& rchild = *new (p.allocate_child()) Task(right);
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p.set_ref_count(2);
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::tbb::task::spawn(lchild);
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::tbb::task::spawn(rchild);
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}
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};
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#else // TBB_VERSION_MAJOR >= 2020
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// In TBB version 2020, the task class was deprecated. Instead, we use the simpler task_group.
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struct RadixThreaderTBB
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{
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std::shared_ptr<::tbb::task_group> TaskGroup =
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std::shared_ptr<::tbb::task_group>(new ::tbb::task_group);
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size_t GetAvailableCores() const { return MAX_CORES; }
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template <typename TaskType>
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void RunParentTask(TaskType task) const
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{
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this->TaskGroup->run_and_wait(task);
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// All tasks should be complete at this point.
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}
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template <typename TaskType>
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void RunChildTasks(void*, TaskType left, TaskType right) const
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{
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this->TaskGroup->run(left);
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this->TaskGroup->run(right);
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}
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};
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#endif
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VTKM_INSTANTIATE_RADIX_SORT_FOR_THREADER(RadixThreaderTBB)
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}
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}
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}
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} // vtkm::cont::tbb::sort
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