| /* Copyright 2020 The TensorFlow Authors. All Rights Reserved. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==============================================================================*/ |
| |
| #ifndef TENSORFLOW_C_TENSOR_INTERFACE_H_ |
| #define TENSORFLOW_C_TENSOR_INTERFACE_H_ |
| |
| #include "tensorflow/core/framework/types.pb.h" |
| #include "tensorflow/core/platform/status.h" |
| |
| namespace tensorflow { |
| |
| // Abstract interface to a Tensor. |
| // |
| // This allows us to hide concrete implementations of Tensor from header |
| // files. The interface lists the common functionality that must be provided by |
| // any concrete implementation. However, in cases where the true concrete class |
| // is needed a static_cast can be applied. |
| class AbstractTensorInterface { |
| public: |
| // Release any underlying resources, including the interface object. |
| virtual void Release() = 0; |
| |
| // Returns tensor dtype. |
| virtual DataType Type() const = 0; |
| // Returns number of dimensions. |
| virtual int NumDims() const = 0; |
| // Returns size of specified dimension |
| virtual int64_t Dim(int dim_index) const = 0; |
| // Returns number of elements across all dimensions. |
| virtual int64_t NumElements() const = 0; |
| // Return size in bytes of the Tensor |
| virtual size_t ByteSize() const = 0; |
| // Returns a pointer to tensor data |
| virtual void* Data() const = 0; |
| |
| // Returns if the tensor is aligned |
| virtual bool IsAligned() const = 0; |
| // Returns if their is sole ownership of this Tensor and thus it can be moved. |
| virtual bool CanMove() const = 0; |
| |
| virtual std::string SummarizeValue() const = 0; |
| |
| protected: |
| virtual ~AbstractTensorInterface() {} |
| }; |
| |
| namespace internal { |
| struct AbstractTensorInterfaceDeleter { |
| void operator()(AbstractTensorInterface* p) const { |
| if (p != nullptr) { |
| p->Release(); |
| } |
| } |
| }; |
| } // namespace internal |
| |
| using AbstractTensorPtr = |
| std::unique_ptr<AbstractTensorInterface, |
| internal::AbstractTensorInterfaceDeleter>; |
| |
| } // namespace tensorflow |
| |
| #endif // TENSORFLOW_C_TENSOR_INTERFACE_H_ |