1 /*
2  * Copyright (c) 2022 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 BATTERY_THREAD_H
17 #define BATTERY_THREAD_H
18 
19 #include <map>
20 #include <memory>
21 #include <refbase.h>
22 #include <thread>
23 #include <vector>
24 #include "power_supply_provider.h"
25 #include "v2_0/ibattery_callback.h"
26 
27 namespace OHOS {
28 namespace HDI {
29 namespace Battery {
30 namespace V2_0 {
31 using UeventMap = std::map<std::string, std::vector<std::pair<std::string, std::string>>>;
32 enum EventType {
33     EVENT_UEVENT_FD,
34     EVENT_TIMER_FD,
35 };
36 
37 class BatteryThread {
38 public:
39     virtual ~BatteryThread();
40 
41     void StartThread(void* service);
42     void InitCallback(const sptr<OHOS::HDI::Battery::V2_0::IBatteryCallback>& callback);
43 protected:
44     void LoopingThreadEntry(void* arg);
45     virtual void Run(void* service);
46     virtual void UpdateBatteryInfo(void* service, const std::string& powerUevent);
HandleStates()47     virtual void HandleStates() {}
48     virtual int32_t UpdateWaitInterval();
49     void UpdateEpollInterval(int32_t chargeState);
CycleMatters()50     virtual void CycleMatters() {}
51 private:
52     int32_t OpenUeventSocket();
53     bool MatchPowerUevent(const char* msg, std::string& powerUevent);
54     bool CheckPowerUevent(const char* msg, std::string& powerUevent);
55     int32_t Init([[maybe_unused]]void* service);
56     int32_t InitUevent();
57     void UeventCallback(void* service);
58     void SetTimerInterval(int32_t interval);
59     int32_t RegisterCallback(int32_t fd, EventType et);
60     static constexpr int32_t INVALID_FD = -1;
61     int32_t ueventFd_ = INVALID_FD;
62     int32_t epFd_ = INVALID_FD;
63     int32_t epollInterval_ = -1;
64     using Callback = std::function<void(BatteryThread*, void*)>;
65     std::map<int32_t, Callback> callbacks_;
66     std::unique_ptr<PowerSupplyProvider> provider_ = nullptr;
67     UeventMap powerUeventMap_;
68     std::unique_ptr<std::thread> batteryThread_ {nullptr};
69     std::atomic_bool isRunning_ {true};
70 };
71 }  // namespace V2_0
72 }  // namespace Battery
73 }  // namespace HDI
74 }  // namespace OHOS
75 
76 #endif // BATTERY_THREAD_H
77