1 /* 2 * Copyright (c) 2021 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 POWERMGR_IRUNNING_LOCK_ACTION_H 17 #define POWERMGR_IRUNNING_LOCK_ACTION_H 18 19 #include <array> 20 #include <string> 21 22 #include "power_common.h" 23 #include "running_lock_info.h" 24 25 namespace OHOS { 26 namespace PowerMgr { 27 class IRunningLockAction { 28 public: 29 IRunningLockAction() = default; 30 virtual ~IRunningLockAction() = default; 31 GetLockTag(RunningLockType type)32 static inline std::string GetLockTag(RunningLockType type) 33 { 34 return LOCK_TAGS[ToUnderlying(type)]; 35 } 36 37 virtual void Acquire(RunningLockType type); 38 virtual void Release(RunningLockType type); 39 40 virtual void Lock(RunningLockType type, const std::string& tag) = 0; 41 virtual void Unlock(RunningLockType type, const std::string& tag) = 0; 42 43 private: 44 class RunningLockDesc { 45 public: IncRef()46 inline void IncRef() 47 { 48 refCnt++; 49 } 50 DecRef()51 inline void DecRef() 52 { 53 refCnt--; 54 } 55 IsRefNone()56 inline bool IsRefNone() const 57 { 58 return refCnt == 0; 59 } 60 GetRefCnt()61 inline uint32_t GetRefCnt() const 62 { 63 return refCnt; 64 } 65 66 private: 67 uint32_t refCnt{0}; 68 }; 69 IsValidType(RunningLockType type)70 static inline bool IsValidType(RunningLockType type) 71 { 72 return type < RunningLockType::RUNNINGLOCK_BUTT; 73 } 74 75 static const std::array<std::string, ToUnderlying(RunningLockType::RUNNINGLOCK_BUTT)> LOCK_TAGS; 76 77 std::array<RunningLockDesc, ToUnderlying(RunningLockType::RUNNINGLOCK_BUTT)> lockDescs_; 78 }; 79 } // namespace PowerMgr 80 } // namespace OHOS 81 #endif // POWERMGR_IRUNNING_LOCK_ACTION_H 82