256 lines
6.4 KiB
C++
256 lines
6.4 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 Sandia Corporation.
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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-AC04-94AL85000 with Sandia Corporation,
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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_exec_cuda_internal_WrappedOperators_h
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#define vtk_m_exec_cuda_internal_WrappedOperators_h
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#include <vtkm/Types.h>
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#include <vtkm/BinaryPredicates.h>
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#include <vtkm/Pair.h>
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#include <vtkm/internal/ExportMacros.h>
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#include <vtkm/exec/cuda/internal/IteratorFromArrayPortal.h>
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// Disable warnings we check vtkm for but Thrust does not.
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VTKM_THIRDPARTY_PRE_INCLUDE
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#include <thrust/system/cuda/memory.h>
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VTKM_THIRDPARTY_POST_INCLUDE
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namespace vtkm {
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namespace exec {
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namespace cuda {
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namespace internal {
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// Unary function object wrapper which can detect and handle calling the
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// wrapped operator with complex value types such as
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// PortalValue which happen when passed an input array that
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// is implicit.
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template<typename T_, typename Function>
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struct WrappedUnaryPredicate
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{
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typedef typename std::remove_const<T_>::type T;
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//make typedefs that thust expects unary operators to have
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typedef T first_argument_type;
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typedef bool result_type;
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Function m_f;
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VTKM_EXEC_EXPORT
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WrappedUnaryPredicate()
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: m_f()
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{}
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VTKM_CONT_EXPORT
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WrappedUnaryPredicate(const Function &f)
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: m_f(f)
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{}
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VTKM_EXEC_EXPORT bool operator()(const T &x) const
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{
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return m_f(x);
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}
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template<typename U>
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VTKM_EXEC_EXPORT bool operator()(const PortalValue<U> &x) const
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{
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return m_f((T)x);
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}
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VTKM_EXEC_EXPORT bool operator()(const thrust::system::cuda::pointer<T> x) const
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{
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return m_f(*x);
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}
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};
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// Binary function object wrapper which can detect and handle calling the
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// wrapped operator with complex value types such as
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// PortalValue which happen when passed an input array that
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// is implicit.
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template<typename T_, typename Function>
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struct WrappedBinaryOperator
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{
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typedef typename std::remove_const<T_>::type T;
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//make typedefs that thust expects binary operators to have
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typedef T first_argument_type;
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typedef T second_argument_type;
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typedef T result_type;
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Function m_f;
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VTKM_EXEC_EXPORT
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WrappedBinaryOperator()
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: m_f()
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{}
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VTKM_CONT_EXPORT
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WrappedBinaryOperator(const Function &f)
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: m_f(f)
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{}
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VTKM_EXEC_EXPORT T operator()(const T &x, const T &y) const
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{
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return m_f(x, y);
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}
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template<typename U>
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VTKM_EXEC_EXPORT T operator()(const T &x,
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const PortalValue<U> &y) const
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{
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return m_f(x, (T)y);
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}
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template<typename U>
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VTKM_EXEC_EXPORT T operator()(const PortalValue<U> &x,
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const T &y) const
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{
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return m_f((T)x, y);
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}
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template<typename U, typename V>
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VTKM_EXEC_EXPORT T operator()(const PortalValue<U> &x,
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const PortalValue<V> &y) const
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{
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return m_f((T)x, (T)y);
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}
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VTKM_EXEC_EXPORT T operator()(const thrust::system::cuda::pointer<T> x,
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const T* y) const
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{
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return m_f(*x, *y);
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}
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VTKM_EXEC_EXPORT T operator()(const thrust::system::cuda::pointer<T> x,
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const T& y) const
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{
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return m_f(*x, y);
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}
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VTKM_EXEC_EXPORT T operator()(const T& x,
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const thrust::system::cuda::pointer<T> y) const
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{
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return m_f(x, *y);
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}
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VTKM_EXEC_EXPORT T operator()(const thrust::system::cuda::pointer<T> x,
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const thrust::system::cuda::pointer<T> y) const
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{
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return m_f(*x, *y);
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}
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};
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template<typename T_, typename Function>
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struct WrappedBinaryPredicate
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{
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typedef typename std::remove_const<T_>::type T;
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//make typedefs that thust expects binary operators to have
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typedef T first_argument_type;
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typedef T second_argument_type;
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typedef bool result_type;
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Function m_f;
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VTKM_EXEC_EXPORT
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WrappedBinaryPredicate()
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: m_f()
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{}
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VTKM_CONT_EXPORT
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WrappedBinaryPredicate(const Function &f)
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: m_f(f)
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{}
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VTKM_EXEC_EXPORT bool operator()(const T &x, const T &y) const
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{
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return m_f(x, y);
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}
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template<typename U>
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VTKM_EXEC_EXPORT bool operator()(const T &x,
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const PortalValue<U> &y) const
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{
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return m_f(x, (T)y);
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}
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template<typename U>
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VTKM_EXEC_EXPORT bool operator()(const PortalValue<U> &x,
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const T &y) const
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{
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return m_f((T)x, y);
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}
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template<typename U, typename V>
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VTKM_EXEC_EXPORT bool operator()(const PortalValue<U> &x,
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const PortalValue<V> &y) const
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{
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return m_f((T)x, (T)y);
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}
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VTKM_EXEC_EXPORT bool operator()(const thrust::system::cuda::pointer<T> x,
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const T* y) const
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{
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return m_f(*x, *y);
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}
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VTKM_EXEC_EXPORT bool operator()(const thrust::system::cuda::pointer<T> x,
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const T& y) const
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{
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return m_f(*x, y);
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}
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VTKM_EXEC_EXPORT bool operator()(const T& x,
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const thrust::system::cuda::pointer<T> y) const
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{
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return m_f(x, *y);
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}
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VTKM_EXEC_EXPORT bool operator()(const thrust::system::cuda::pointer<T> x,
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const thrust::system::cuda::pointer<T> y) const
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{
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return m_f(*x, *y);
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}
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};
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}
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}
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}
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} //namespace vtkm::exec::cuda::internal
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namespace thrust { namespace detail {
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//
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// We tell Thrust that our WrappedBinaryOperator is commutative so that we
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// activate numerous fast paths inside thrust which are only available when
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// the binary functor is commutative and the T type is is_arithmetic
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//
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//
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template< typename T, typename F>
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struct is_commutative< vtkm::exec::cuda::internal::WrappedBinaryOperator<T, F> > :
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public thrust::detail::is_arithmetic<T> { };
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} } //namespace thrust::detail
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#endif //vtk_m_exec_cuda_internal_WrappedOperators_h
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