10 #ifndef EIGEN_CXX11_TENSOR_TENSOR_FORCED_EVAL_H
11 #define EIGEN_CXX11_TENSOR_TENSOR_FORCED_EVAL_H
16 template<
typename XprType,
template <
class>
class MakePointer_>
17 struct traits<TensorForcedEvalOp<XprType, MakePointer_> >
20 typedef typename XprType::Scalar Scalar;
21 typedef traits<XprType> XprTraits;
22 typedef typename traits<XprType>::StorageKind StorageKind;
23 typedef typename traits<XprType>::Index
Index;
24 typedef typename XprType::Nested Nested;
25 typedef typename remove_reference<Nested>::type _Nested;
26 static const int NumDimensions = XprTraits::NumDimensions;
27 static const int Layout = XprTraits::Layout;
32 template <
class T>
struct MakePointer {
34 typedef MakePointer_<T> MakePointerT;
35 typedef typename MakePointerT::Type Type;
39 template<
typename XprType,
template <
class>
class MakePointer_>
40 struct eval<TensorForcedEvalOp<XprType, MakePointer_>,
Eigen::Dense>
42 typedef const TensorForcedEvalOp<XprType, MakePointer_>& type;
45 template<
typename XprType,
template <
class>
class MakePointer_>
46 struct nested<TensorForcedEvalOp<XprType, MakePointer_>, 1, typename eval<TensorForcedEvalOp<XprType, MakePointer_> >::type>
48 typedef TensorForcedEvalOp<XprType, MakePointer_> type;
70 template<
typename XprType,
template <
class>
class MakePointer_>
74 typedef typename Eigen::internal::traits<TensorForcedEvalOp>::Scalar Scalar;
76 typedef typename internal::remove_const<typename XprType::CoeffReturnType>::type CoeffReturnType;
77 typedef typename Eigen::internal::nested<TensorForcedEvalOp>::type Nested;
78 typedef typename Eigen::internal::traits<TensorForcedEvalOp>::StorageKind StorageKind;
79 typedef typename Eigen::internal::traits<TensorForcedEvalOp>::Index Index;
85 const typename internal::remove_all<typename XprType::Nested>::type&
86 expression()
const {
return m_xpr; }
89 typename XprType::Nested m_xpr;
93 template<
typename ArgType,
typename Device,
template <
class>
class MakePointer_>
97 typedef typename ArgType::Scalar Scalar;
99 typedef typename XprType::Index
Index;
100 typedef typename XprType::CoeffReturnType CoeffReturnType;
101 typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType;
102 static const int PacketSize = internal::unpacket_traits<PacketReturnType>::size;
106 PacketAccess = (PacketSize > 1),
111 EIGEN_DEVICE_FUNC TensorEvaluator(
const XprType& op,
const Device&
device)
113 : m_impl(op.expression(),
device), m_op(op.expression()), m_device(
device), m_buffer(NULL)
116 EIGEN_DEVICE_FUNC
const Dimensions& dimensions()
const {
return m_impl.dimensions(); }
118 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
bool evalSubExprsIfNeeded(CoeffReturnType*) {
119 const Index numValues = internal::array_prod(m_impl.dimensions());
120 m_buffer = (CoeffReturnType*)m_device.allocate(numValues *
sizeof(CoeffReturnType));
122 if (NumTraits<CoeffReturnType>::RequireInitialization) {
123 for (Index i = 0; i < numValues; ++i) {
124 new(m_buffer+i) CoeffReturnType();
127 typedef TensorEvalToOp< const typename internal::remove_const<ArgType>::type > EvalTo;
128 EvalTo evalToTmp(m_buffer, m_op);
129 const bool PacketAccess = internal::IsVectorizable<Device, const ArgType>::value;
130 internal::TensorExecutor<const EvalTo, typename internal::remove_const<Device>::type, PacketAccess>::run(evalToTmp, m_device);
133 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
void cleanup() {
134 m_device.deallocate(m_buffer);
138 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index)
const
140 return m_buffer[index];
143 template<
int LoadMode>
144 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketReturnType packet(Index index)
const
146 return internal::ploadt<PacketReturnType, LoadMode>(m_buffer + index);
149 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost costPerCoeff(
bool vectorized)
const {
150 return TensorOpCost(
sizeof(CoeffReturnType), 0, 0, vectorized, PacketSize);
153 EIGEN_DEVICE_FUNC
typename MakePointer<Scalar>::Type data()
const {
return m_buffer; }
156 const TensorEvaluator<ArgType, Device>& impl() {
return m_impl; }
158 const Device&
device()
const{
return m_device;}
160 TensorEvaluator<ArgType, Device> m_impl;
162 const Device& m_device;
163 typename MakePointer<CoeffReturnType>::Type m_buffer;
The tensor base class.
Definition: TensorForwardDeclarations.h:29
Tensor reshaping class.
Definition: TensorForcedEval.h:72
Namespace containing all symbols from the Eigen library.
EIGEN_DEFAULT_DENSE_INDEX_TYPE Index
A cost model used to limit the number of threads used for evaluating tensor expression.
Definition: TensorEvaluator.h:29
const Device & device() const
required by sycl in order to construct sycl buffer from raw pointer
Definition: TensorEvaluator.h:114