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 <cstdint> 20 #include <iosfwd> 21 #include <array> 22 #include <string> 23 24 #include "power_common.h" 25 #include "running_lock_info.h" 26 27 namespace OHOS { 28 namespace PowerMgr { 29 class IRunningLockAction { 30 public: 31 IRunningLockAction() = default; 32 virtual ~IRunningLockAction() = default; 33 GetLockTag(RunningLockType type)34 static inline std::string GetLockTag(RunningLockType type) 35 { 36 return LOCK_TAGS[ToUnderlying(type)]; 37 } 38 39 virtual void Acquire(RunningLockType type); 40 virtual void Release(RunningLockType type); 41 42 virtual void Lock(RunningLockType type, const std::string& tag) = 0; 43 virtual void Unlock(RunningLockType type, const std::string& tag) = 0; 44 45 private: 46 class RunningLockDesc { 47 public: IncRef()48 inline void IncRef() 49 { 50 refCnt++; 51 } 52 DecRef()53 inline void DecRef() 54 { 55 refCnt--; 56 } 57 IsRefNone()58 inline bool IsRefNone() const 59 { 60 return refCnt == 0; 61 } 62 GetRefCnt()63 inline uint32_t GetRefCnt() const 64 { 65 return refCnt; 66 } 67 68 private: 69 uint32_t refCnt{0}; 70 }; 71 IsValidType(RunningLockType type)72 static inline bool IsValidType(RunningLockType type) 73 { 74 return type < RunningLockType::RUNNINGLOCK_BUTT; 75 } 76 77 static const std::array<std::string, ToUnderlying(RunningLockType::RUNNINGLOCK_BUTT)> LOCK_TAGS; 78 79 std::array<RunningLockDesc, ToUnderlying(RunningLockType::RUNNINGLOCK_BUTT)> lockDescs_; 80 }; 81 } // namespace PowerMgr 82 } // namespace OHOS 83 #endif // POWERMGR_IRUNNING_LOCK_ACTION_H 84