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/*=========================================================================
Program: Visualization Toolkit
Module: vtkSMPToolsInternal.h.in
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm 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.
=========================================================================*/
#include "vtkMultiThreader.h"
#include "vtkNew.h"
#include <tbb/blocked_range.h>
#include <tbb/parallel_for.h>
#include <tbb/parallel_sort.h>
namespace vtk
{
namespace detail
{
namespace smp
{
//--------------------------------------------------------------------------------
template <typename T>
class FuncCall
{
T& o;
void operator=(const FuncCall&) VTK_DELETE_FUNCTION;
public:
void operator() (const tbb::blocked_range<vtkIdType>& r) const
{
o.Execute(r.begin(), r.end());
}
FuncCall (T& _o) : o(_o)
{
}
};
//--------------------------------------------------------------------------------
template <typename FunctorInternal>
static void vtkSMPTools_Impl_For(
vtkIdType first, vtkIdType last, vtkIdType grain,
FunctorInternal& fi)
{
vtkIdType n = last - first;
if (!n)
{
return;
}
if (grain > 0)
{
tbb::parallel_for(tbb::blocked_range<vtkIdType>(first, last, grain), FuncCall<FunctorInternal>(fi));
}
else
{
tbb::parallel_for(tbb::blocked_range<vtkIdType>(first, last), FuncCall<FunctorInternal>(fi));
}
}
//--------------------------------------------------------------------------------
template<typename RandomAccessIterator>
static void vtkSMPTools_Impl_Sort(RandomAccessIterator begin,
RandomAccessIterator end)
{
tbb::parallel_sort(begin, end);
}
//--------------------------------------------------------------------------------
template<typename RandomAccessIterator, typename Compare>
static void vtkSMPTools_Impl_Sort(RandomAccessIterator begin,
RandomAccessIterator end,
Compare comp)
{
tbb::parallel_sort(begin, end, comp);
}
}//namespace smp
}//namespace detail
}//namespace vtk
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