TODO--systemserver startup or system startup

本文详细介绍了Android系统启动过程中的关键步骤和服务初始化流程,包括SystemServer的启动、核心服务如ActivityManagerService和PackageManagerService的初始化等。

reference other blog,

SystemServer.java::main:

    a.load android_servers library

    b.call init1-->system_init.cpp::system_init

system_init.cpp::system_init

    a.start SurfaceFlinger

   [b.start AudioFlinger,MediaPlayerService,CameraService]

    c.AndroidRuntime->callStatic("com/android/server/SystemServer", "init2");

    d.ProcessState::self()->startThreadPool();
    e.IPCThreadState::self()->joinThreadPool();

 

SystemServer.java::init2 start ServerThread:

    a.Starting Power Manager

    b.Starting Activity Manager.  ActivityManagerService.main(factoryTest)

    c.Starting telephony registry

    d.Starting Package Manager  PackageManagerService.main

    e.ActivityManagerService.setSystemProcess():add activity,meminfo,cpuinfo,activity.broast,activity.service,activity.senders,activity.providers,permission services

    f.Starting Content Manager  ContentService.main

    g.Starting System Content Providers

    h.Starting Battery Service

    i.Starting Hardware Service

    j.nitialize the power service

    k.Starting Alarm Manager

    l.Starting Led Manager

    m.Starting Sensor Service

    n.Starting Window Manager

    o.Bluetooth Servic

    p.Starting Status Bar Service

    q.Starting Clipboard Service

    r.Starting Input Method Service

    s.Starting NetStat Service

    t.Starting Connectivity Service

    u.Starting Notification Manager

    v.Starting Mount Service

    w.Starting DeviceStorageMonitor service

    x.Starting Location Manager

    z.Starting Search Service

     Starting Checkin Service

     Starting Wallpaper Service

     Starting Audio Service

     Starting AppWidget Service

 

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