1 /** 2 * Copyright 2019 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_UTIL_SERVICE_H_ 17 #define MINDSPORE_CCSRC_MINDDATA_DATASET_UTIL_SERVICE_H_ 18 19 #include <atomic> 20 #include "minddata/dataset/util/lock.h" 21 #include "minddata/dataset/util/status.h" 22 23 namespace mindspore { 24 namespace dataset { 25 class Service { 26 public: 27 enum class STATE : int { kStartInProg = 1, kRunning, kStopInProg, kStopped }; 28 Service()29 Service() : state_(STATE::kStopped) {} 30 31 Service(const Service &) = delete; 32 33 Service &operator=(const Service &) = delete; 34 ~Service()35 virtual ~Service() {} 36 ServiceState()37 STATE ServiceState() const { return state_; } 38 39 virtual Status DoServiceStart() = 0; 40 41 virtual Status DoServiceStop() = 0; 42 43 Status ServiceStart(); 44 45 Status ServiceStop() noexcept; 46 47 protected: 48 STATE state_; 49 RWLock state_lock_; 50 }; 51 } // namespace dataset 52 } // namespace mindspore 53 #endif // MINDSPORE_CCSRC_MINDDATA_DATASET_UTIL_SERVICE_H_ 54