1 /** 2 * Copyright 2019-2022 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 #ifndef MINDSPORE_CCSRC_MINDDATA_DATASET_ENGINE_OPERATOR_CONNECTOR_H_ 17 #define MINDSPORE_CCSRC_MINDDATA_DATASET_ENGINE_OPERATOR_CONNECTOR_H_ 18 19 #include <memory> 20 #include <string> 21 #include <utility> 22 #include "minddata/dataset/core/tensor_row.h" 23 #include "minddata/dataset/engine/connector.h" 24 25 #include "minddata/dataset/include/dataset/constants.h" 26 27 namespace mindspore { 28 namespace dataset { 29 30 class OperatorConnector : public Queue<TensorRow> { 31 public: 32 /// Constructor of OperatorConnector 33 /// \param queue_capacity The number of element (TensorRows) for the queue. OperatorConnector(int32_t queue_capacity)34 explicit OperatorConnector(int32_t queue_capacity) : Queue<TensorRow>(queue_capacity), out_rows_count_(0) {} 35 36 /// Destructor of -OperatorConnector 37 ~OperatorConnector() = default; 38 PopFront(TensorRow * row)39 Status PopFront(TensorRow *row) override { 40 out_rows_count_++; 41 return Queue::PopFront(row); 42 } SendEOE()43 Status SendEOE() noexcept { 44 TensorRow eoe = TensorRow(TensorRow::kFlagEOE); 45 return Add(std::move(eoe)); 46 } 47 SendEOF()48 Status SendEOF() noexcept { 49 TensorRow eof = TensorRow(TensorRow::kFlagEOF); 50 return Add(std::move(eof)); 51 } out_rows_count()52 auto out_rows_count() const { return out_rows_count_; } 53 54 private: 55 int64_t out_rows_count_; 56 }; 57 } // namespace dataset 58 } // namespace mindspore 59 60 #endif // MINDSPORE_CCSRC_MINDDATA_DATASET_ENGINE_OPERATOR_CONNECTOR_H_ 61