forked from huawei/mindspore2022
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/**
|
|
* Copyright 2020 Huawei Technologies Co., Ltd
|
|
*
|
|
* 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.
|
|
*/
|
|
#include "minddata/dataset/include/iterator.h"
|
|
#include "minddata/dataset/core/client.h"
|
|
#include "minddata/dataset/engine/consumers/tree_consumer.h"
|
|
#include "minddata/dataset/include/datasets.h"
|
|
|
|
namespace mindspore {
|
|
namespace dataset {
|
|
|
|
// Get the next row from the data pipeline.
|
|
bool Iterator::GetNextRow(TensorMap *row) {
|
|
Status rc = consumer_->GetNextAsMap(row);
|
|
if (rc.IsError()) {
|
|
MS_LOG(ERROR) << "GetNextRow: Failed to get next row. Error status: " << rc;
|
|
row->clear();
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Get the next row from the data pipeline.
|
|
bool Iterator::GetNextRow(TensorVec *row) {
|
|
Status rc = consumer_->GetNextAsVector(row);
|
|
if (rc.IsError()) {
|
|
MS_LOG(ERROR) << "GetNextRow: Failed to get next row. Error status: " << rc;
|
|
row->clear();
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Shut down the data pipeline.
|
|
void Iterator::Stop() { runtime_context_->Terminate(); }
|
|
|
|
// Function to build and launch the execution tree.
|
|
Status Iterator::BuildAndLaunchTree(std::shared_ptr<Dataset> ds) {
|
|
runtime_context_ = std::make_unique<NativeRuntimeContext>();
|
|
RETURN_IF_NOT_OK(runtime_context_->Init());
|
|
auto consumer = std::make_unique<IteratorConsumer>();
|
|
consumer_ = consumer.get();
|
|
RETURN_IF_NOT_OK(consumer->Init(ds->IRNode()));
|
|
runtime_context_->AssignConsumer(std::move(consumer));
|
|
return Status::OK();
|
|
}
|
|
|
|
} // namespace dataset
|
|
} // namespace mindspore
|