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