android下batteryService服务及客户端分析

ContextImpl.java

IBatteryPropertiesRegistrar

- registerListener()- unregisterListener()- getProperty()

healthd-main()

内部类

RefBase

+ mRefs:weakref_impl = defaultValue

+ incStrong()- decStrong()- forceIncStrong()- getStrongCount()

android.os.IBatteryPropertiesListener[aidl]

用来生成java代码

IInterface

+ asBinder():sp

android.os.IBatteryPropertiesRegistrar.Stub.Proxy(internal)

+ 由aidl生成，是Stub的私有内部类，外部不可见+ mRemote:IBinder

BatteryPropertiesRegistrar

+ mRegistrationLock+ mListeners

+ publish()+ notifyListeners()- registerListener()- unregisterListener()- getProperty()- dump()- binderDied()

同一个

android.os.IBinder

+ getInterfaceDescriptor()+ pingBinder()+ isBinderActive()+ queryLocalInterface()+ dump()+ dumpAsync()+ transact()+ linkToDeath()+ unlinkToDeath()

android.os.IBatteryPropertiesListener.Stub.Proxy(internal)

+ construct Proxy(android.os.IBinder remote)+ asBinder()+ getInterfaceDescriptor()+ batteryPropertiesChanged(android.os.BatteryProperties props)

android.os.Binder

+ native getCallingPid()+ native getCallingUid()- getCallingUserHandle()- native clearCallingIdentity()- native restoreCallingIdentity()+ native setThreadStrictModePolicy()+ native getThreadStrictModePolicy()+ native flushPendingCommands()+ native joinThreadPool()+ isProxy()+ attachInterface()+ setDumpDisable()+ onTransact()+ finalize()+ checkParcel()

BBinder

+ localBinder()- onTransact()

healthd_mode_ops=&android_ops

templateBnInterface

service与client分割线

IBinder

+ queryLocalInterface()- getInterfaceDescriptor()- isBinderAlive()- pingBinder()- dump()- transact()- linkToDeath()- unlinkToDeath()- checkSubsclass()- attachObject()- findObject()- detachObject()- localBinder(): BBinder*- remoteBinder(): BpBinder*

android.os.IBatteryPropertiesRegistrar.Stub(internal)

+ 由aidl生成

+ asInterface(android.os.IBinder):android.os.IBatteryPropertiesRegistrar+ asBinder()+ onTransact()

healthd_mode_ops-init()

android.os.IBatteryPropertiesListener

由aidl生成+ batteryPropertiesChanged(android.os.BatteryProperties props)

Android Native Service 程序结构（batteryproperties为例，在healthd中）

android.os.IBatteryPropertiesRegistrar

android.os.IInterface

+ asBinder():IBinder

ProcessState::self()-setThreadPoolMaxThreadCount(0);IPCThreadState::self()-disableBackgroundScheduling(true);IPCThreadState::self()-setupPolling(&gBinderFd);gBatteryPropertiesRegistrar = new BatteryPropertiesRegistrar();gBatteryPropertiesRegistrar-publish();

android.os.IBatteryPropertiesListener.Stub(internal)

+ asInterface(android.os.IBinder):android.os.IBatteryPropertiesListener+ asBinder() + onTransact()

android.os.IBinder.DeathRecipient

+ binderDied()

healthd_mode_android_init()

android.os.IBatteryPropertiesRegistrar[aidl]

defaultServiceManager()-addService(String16(\"batteryproperties\

healthd_init()

IBatteryPropertiesListener

- batteryPropertiesChanged()

IBinder::DeathRecipient

IBinder内部类

+ binderDied(params)

getIntProperty()----queryProperty()

BatteryManager.java

INTERFACE

被BnInterface派生

如：IBatteryPropertiesRegistrar

BnBatteryPropertiesRegistrar

+ onTransact(params)