1 /* Copyright 2015 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_CORE_KERNELS_CONSTANT_OP_H_ 17 #define TENSORFLOW_CORE_KERNELS_CONSTANT_OP_H_ 18 19 #include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor" 20 #include "tensorflow/core/framework/op_kernel.h" 21 #include "tensorflow/core/framework/tensor_types.h" 22 #include "tensorflow/core/platform/macros.h" 23 24 namespace tensorflow { 25 26 // ConstantOp returns a tensor specified by ConstantOpDef. 27 class ConstantOp : public OpKernel { 28 public: 29 explicit ConstantOp(OpKernelConstruction* ctx); 30 void Compute(OpKernelContext* ctx) override; IsExpensive()31 bool IsExpensive() override { return false; } 32 ~ConstantOp() override; 33 34 private: 35 Tensor tensor_; 36 TF_DISALLOW_COPY_AND_ASSIGN(ConstantOp); 37 }; 38 39 class PlaceholderOp : public OpKernel { 40 public: 41 explicit PlaceholderOp(OpKernelConstruction* ctx); 42 void Compute(OpKernelContext* ctx) override; 43 44 private: 45 PartialTensorShape expected_shape_; 46 }; 47 48 } // namespace tensorflow 49 50 #endif // TENSORFLOW_CORE_KERNELS_CONSTANT_OP_H_ 51