2 * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef __ONERT_BACKEND_CPU_TENSOR_H__
18 #define __ONERT_BACKEND_CPU_TENSOR_H__
20 #include <backend/cpu_common/Tensor.h>
30 using Tensor = cpu_common::Tensor;
32 // Tensor which has data from external. To support this, assume below things
33 // no padding, always NHWC layout, constant tensor and not dynamic
34 class ExternalTensor : public Tensor
37 ExternalTensor() = delete;
40 ExternalTensor(const ir::OperandInfo &info, const ir::Layout layout) : Tensor(info, layout)
42 assert(_layout == ir::Layout::NHWC);
43 assert(_info.isConstant());
44 assert(_info.isDynamic() == false);
48 void setData(const std::shared_ptr<ir::Data> data)
50 assert(data != nullptr);
52 // Note. Some op such as cker::Conv could take buffer as nullptr.
53 // That's why _buffer also would be used
54 _buffer = const_cast<uint8_t *>(_data->base());
58 uint8_t *buffer() const override { return _buffer; }
60 bool is_constant() const override { return true; }
61 bool is_dynamic() const override { return false; }
62 void set_dynamic() override
64 throw std::runtime_error("This tensor does not support changing dynamic");
67 void setShape(const ir::Shape &) override
69 throw std::runtime_error("This tensor does not support changing shape");
72 void increase_ref() override { ++_num_references; }
74 void decrease_ref() override
76 assert(_data != nullptr);
77 assert(_num_references > 0);
79 if (_num_references == 0)
87 std::shared_ptr<const ir::Data> _data;
91 } // namespace backend
94 #endif // __ONERT_BACKEND_CPU_TENSOR_H__