1 /**
2 * Copyright 2022 Huawei Technologies Co., Ltd
3 *
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
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
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.
15 */
16
17 #include "src/litert/cxx_api/model/model_impl.h"
18 #include "include/train/train_cfg.h"
19 #include "src/litert/cxx_api/converters.h"
20 #include "src/train/transfer_session.h"
21 namespace mindspore {
BuildTransferLearning(const std::shared_ptr<Graph> & backbone,const std::shared_ptr<Graph> & head)22 Status ModelImpl::BuildTransferLearning(const std::shared_ptr<Graph> &backbone, const std::shared_ptr<Graph> &head) {
23 const auto b_graph_data = backbone->graph_data_;
24 const auto h_graph_data = head->graph_data_;
25 if (b_graph_data == nullptr || h_graph_data == nullptr) {
26 MS_LOG(ERROR) << "graph data cannot be nullptr";
27 return kLiteNullptr;
28 }
29 bool is_train_session = h_graph_data->IsTrainModel();
30 if (is_train_session) {
31 const auto b_model = reinterpret_cast<lite::LiteModel *>(b_graph_data->lite_model().get());
32 const auto h_model = reinterpret_cast<lite::LiteModel *>(h_graph_data->lite_model().get());
33 if (h_model == nullptr || h_model->buf == nullptr || b_model == nullptr || b_model->buf == nullptr) {
34 MS_LOG(ERROR) << "Lite model has been freed.";
35 return kLiteNullptr;
36 }
37
38 lite::TrainCfg train_cfg;
39 if (cfg_ != nullptr) {
40 auto status = A2L_ConvertConfig(cfg_.get(), &train_cfg);
41 if (status != kSuccess) {
42 MS_LOG(ERROR) << "Failed to convert Config to Lite Config";
43 return status;
44 }
45 }
46
47 auto session = std::shared_ptr<lite::LiteSession>(
48 CreateTransferSessionInt(b_model->buf, b_model->buf_size_, h_model->buf, h_model->buf_size_,
49 ContextUtils::Convert(context_.get()), true, &train_cfg));
50 if (session == nullptr) {
51 MS_LOG(ERROR) << "create session failed";
52 return kLiteMemoryFailed;
53 }
54 session_.swap(session);
55 return kSuccess;
56 }
57 MS_LOG(DEBUG) << "Session is not a train session.";
58 return kLiteError;
59 }
60 } // namespace mindspore
61