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 OHOS_ABILITY_RUNTIME_RESTART_APP_MANAGER_H 17 #define OHOS_ABILITY_RUNTIME_RESTART_APP_MANAGER_H 18 19 #include <mutex> 20 #include <string> 21 #include <unordered_map> 22 #include "cpp/mutex.h" 23 #include "nocopyable.h" 24 25 namespace OHOS { 26 namespace AAFwk { 27 typedef struct RestartAppKey { 28 int32_t uid = 0; 29 std::string instanceKey = ""; 30 RestartAppKeyRestartAppKey31 RestartAppKey(std::string callingInstanceKey, int32_t callingUid) 32 { 33 instanceKey = callingInstanceKey; 34 uid = callingUid; 35 } 36 bool operator ==(const struct RestartAppKey &other) const 37 { 38 return instanceKey == other.instanceKey && uid == other.uid; 39 } 40 } RestartAppKeyType; 41 42 struct RestartAppKeyHash { operatorRestartAppKeyHash43 size_t operator()(const RestartAppKeyType &p) const 44 { 45 return std::hash<std::string>()(p.instanceKey) ^ std::hash<int>()(p.uid); 46 } 47 }; 48 49 /** 50 * @class RestartAppManager 51 * RestartAppManager provides a facility for managing restart app history. 52 */ 53 class RestartAppManager { 54 public: 55 using RestartAppMapType = std::unordered_map<RestartAppKeyType, time_t, RestartAppKeyHash>; 56 virtual ~RestartAppManager() = default; 57 static RestartAppManager &GetInstance(); 58 59 bool IsRestartAppFrequent(const RestartAppKeyType &key, time_t time); 60 void AddRestartAppHistory(const RestartAppKeyType &key, time_t time); 61 62 private: 63 RestartAppManager() = default; 64 DISALLOW_COPY_AND_MOVE(RestartAppManager); 65 66 ffrt::mutex restartAppMapLock_; 67 RestartAppMapType restartAppHistory_; // RestartAppKey:time 68 }; 69 } // namespace AAFwk 70 } // namespace OHOS 71 #endif // OHOS_ABILITY_RUNTIME_RESTART_APP_MANAGER_H 72