1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdint.h> 18 #include <sys/types.h> 19 20 #include <batterystats/IBatteryStats.h> 21 #include <utils/Singleton.h> 22 #include <utils/SortedVector.h> 23 #include <utils/SystemClock.h> 24 25 namespace android { 26 // --------------------------------------------------------------------------- 27 28 class BatteryService : public Singleton<BatteryService> { 29 static constexpr int64_t WAKEUP_SENSOR_EVENT_DEBOUNCE_MS = 1000; 30 31 friend class Singleton<BatteryService>; 32 sp<IBatteryStats> mBatteryStatService; 33 34 BatteryService(); 35 36 void enableSensorImpl(uid_t uid, int handle); 37 void disableSensorImpl(uid_t uid, int handle); 38 void noteWakeupSensorEventImpl(int64_t elapsedNanos, uid_t uid, int handle); 39 40 struct Info { 41 uid_t uid; 42 int handle; 43 int32_t count; InfoInfo44 Info() : uid(0), handle(0), count(0) { } InfoInfo45 Info(uid_t uid, int handle) : uid(uid), handle(handle), count(0) { } 46 bool operator < (const Info& rhs) const { 47 return (uid == rhs.uid) ? (handle < rhs.handle) : (uid < rhs.uid); 48 } 49 }; 50 51 int64_t mLastWakeupSensorEventReportedMs; 52 Mutex mActivationsLock; 53 SortedVector<Info> mActivations; 54 bool addSensor(uid_t uid, int handle); 55 bool removeSensor(uid_t uid, int handle); 56 bool checkService(); 57 58 public: enableSensor(uid_t uid,int handle)59 static void enableSensor(uid_t uid, int handle) { 60 BatteryService::getInstance().enableSensorImpl(uid, handle); 61 } disableSensor(uid_t uid,int handle)62 static void disableSensor(uid_t uid, int handle) { 63 BatteryService::getInstance().disableSensorImpl(uid, handle); 64 } noteWakeupSensorEvent(int64_t elapsed,uid_t uid,int handle)65 static void noteWakeupSensorEvent(int64_t elapsed, uid_t uid, int handle) { 66 BatteryService& instance = BatteryService::getInstance(); 67 const int64_t nowElapsedMs = elapsedRealtime(); 68 if (nowElapsedMs >= (instance.mLastWakeupSensorEventReportedMs 69 + WAKEUP_SENSOR_EVENT_DEBOUNCE_MS)) { 70 instance.noteWakeupSensorEventImpl(elapsed, uid, handle); 71 instance.mLastWakeupSensorEventReportedMs = nowElapsedMs; 72 } 73 } 74 }; 75 76 // --------------------------------------------------------------------------- 77 }; // namespace android 78 79