1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef OS_ACCOUNT_SERVICES_ACCOUNTMGR_INCLUDE_DATABASE_LOADER_H 17 #define OS_ACCOUNT_SERVICES_ACCOUNTMGR_INCLUDE_DATABASE_LOADER_H 18 19 #include <mutex> 20 #include "database_adapter_interface.h" 21 #include "event_handler.h" 22 23 namespace OHOS { 24 namespace AccountSA { 25 namespace { 26 typedef IDbAdapterDataManager* (*FUNC_CREATE) (void); 27 typedef void (*FUNC_DESTROY) (IDbAdapterDataManager*); 28 }; 29 30 class DatabaseAdapterLoader final { 31 public: 32 static DatabaseAdapterLoader &GetInstance(); 33 ~DatabaseAdapterLoader(); 34 35 std::shared_ptr<IDbAdapterDataManager> GetDataManager(); 36 void DestroyDataManager(IDbAdapterDataManager* dataManager); 37 bool CheckAndUnload(); 38 private: 39 bool CheckAndLoad(); 40 FUNC_CREATE createFunc_ = nullptr; 41 FUNC_DESTROY destroyFunc_ = nullptr; 42 void *handle_ = nullptr; 43 std::mutex loadMutex_; 44 }; 45 } // namespace AccountSA 46 } // namespace OHOS 47 #endif // OS_ACCOUNT_SERVICES_ACCOUNTMGR_INCLUDE_DATABASE_LOADER_H