EVOLUTION-MANAGER

Edit File: scatter_nd_op.h

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
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==============================================================================*/

#ifndef TENSORFLOW_KERNELS_SCATTER_ND_OP_H_
#define TENSORFLOW_KERNELS_SCATTER_ND_OP_H_

#include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor"

#include "tensorflow/core/framework/bounds_check.h"
#include "tensorflow/core/framework/op_kernel.h"
#include "tensorflow/core/framework/register_types.h"
#include "tensorflow/core/framework/tensor.h"
#include "tensorflow/core/framework/tensor_shape.h"
#include "tensorflow/core/kernels/fill_functor.h"
#include "tensorflow/core/kernels/scatter_nd_op.h"
#include "tensorflow/core/platform/mutex.h"
#include "tensorflow/core/platform/types.h"
#include "tensorflow/core/util/util.h"

namespace tensorflow {

typedef Eigen::ThreadPoolDevice CPUDevice;

class OpKernelContext;

namespace scatter_nd_op {

enum class UpdateOp { ASSIGN, ADD, SUB, MIN, MAX };

}  // namespace scatter_nd_op

namespace functor {

// Functor used by ScatterOp to do the computations.
template <typename Device, typename T, typename Index,
          scatter_nd_op::UpdateOp op, int IXDIM>
struct ScatterNdFunctor {
  // Returns -1 on success or a nonnegative i s.t. indices[i] is a bad index.
  Index operator()(
      const Device& d, const Index slice_size,
      const Eigen::array<Eigen::DenseIndex, IXDIM> output_shape_prefix,
      typename TTypes<T, 2>::Tensor Tparams,
      typename TTypes<Index, 2>::ConstTensor Tindices,
      typename TTypes<T, 2>::ConstTensor Tupdates,
      typename TTypes<T, 2>::Tensor Toutput);
};

// Scatter updates into indices in Tensor out.  The argument allocate
// controls whether 'out' should be created.  If allocate is true,
// *out will be updated to the scattered tensor upon successful completion.
// If allocate is false, out must point to a Tensor allocated with the
// right type (T) and shape.  This tensor will not be zeroed out
// before the scatter is executed.
template <typename Device, typename T, typename Index,
          scatter_nd_op::UpdateOp Op>
Status DoScatterNd(OpKernelContext* c, const Tensor& indices,
                   const Tensor& updates, const TensorShape& shape, Tensor* out,
                   bool allocate);

}  // namespace functor
}  // namespace tensorflow

#endif  // TENSORFLOW_KERNELS_SCATTER_ND_OP_H_