Error while debugging SystemServer.java file.

[Sunny]

Hi,

     

     I am trying to debug some code in SystemServer.java file.

Initially,  "power.init(context, lights, ActivityManagerService.self(), battery);" was there. To Debug this, i am using "android.os.Debug" class which will provide method call tracing.

So i added two lines for debugging 

            android.os.Debug.startMethodTracingDdms(35000, MAX_PRIORITY); //=================================== added

            power.init(context, lights, ActivityManagerService.self(), battery);

            android.os.Debug.stopMethodTracing(); //=================================== added

Noting else is changed, But still i am getting below error. If i will added above two lines some where else in the code then i am not getting any error!!!!!

Most of the time any thing is wrong i am getting following error in "System Content Providers", "Input Method Service" and "Accessibility Manager". Why?

Anyone has any idea what is wrong in this. 

05-29 06:33:11.319: I/SystemServer(96): System Content Providers

05-29 06:33:11.328: E/ActivityThread(96): Failed to find provider info for settings

05-29 06:33:11.328: E/System(96): ******************************************

05-29 06:33:11.338: E/System(96): ************ Failure starting core service

05-29 06:33:11.338: E/System(96): java.lang.NullPointerException

05-29 06:33:11.338: E/System(96): at android.provider.Settings$NameValueCache.getString(Settings.java:711)

05-29 06:33:11.338: E/System(96): at android.provider.Settings$Secure.getString(Settings.java:2211)

05-29 06:33:11.338: E/System(96): at android.provider.Settings$Secure.getInt(Settings.java:2279)

05-29 06:33:11.338: E/System(96): at com.android.server.am.CoreSettingsObserver.populateCoreSettings(CoreSettingsObserver.java:93)

05-29 06:33:11.338: E/System(96): at com.android.server.am.CoreSettingsObserver.sendCoreSettings(CoreSettingsObserver.java:70)

05-29 06:33:11.338: E/System(96): at com.android.server.am.CoreSettingsObserver.<init>(CoreSettingsObserver.java:55)

05-29 06:33:11.338: E/System(96): at com.android.server.am.ActivityManagerService.installSystemProviders(ActivityManagerService.java:6271)

05-29 06:33:11.338: E/System(96): at com.android.server.ServerThread.run(SystemServer.java:190)

05-29 06:33:11.338: I/SystemServer(96): Input Method Service

05-29 06:33:11.378: W/InputManagerService(96): Couldn't create dir.: /data/system/inputmethod

05-29 06:33:11.409: E/ActivityThread(96): Failed to find provider info for settings

05-29 06:33:11.409: W/SystemServer(96): ***********************************************

05-29 06:33:11.418: A/SystemServer(96): BOOT FAILURE starting Input Manager Service

05-29 06:33:11.418: A/SystemServer(96): java.lang.NullPointerException

05-29 06:33:11.418: A/SystemServer(96): at android.provider.Settings$NameValueCache.getString(Settings.java:711)

05-29 06:33:11.418: A/SystemServer(96): at android.provider.Settings$Secure.getString(Settings.java:2211)

05-29 06:33:11.418: A/SystemServer(96): at com.android.server.InputMethodManagerService.buildInputMethodListLocked(InputMethodManagerService.java:2047)

05-29 06:33:11.418: A/SystemServer(96): at com.android.server.InputMethodManagerService.<init>(InputMethodManagerService.java:569)

05-29 06:33:11.418: A/SystemServer(96): at com.android.server.ServerThread.run(SystemServer.java:269)

05-29 06:33:11.458: I/SystemServer(96): Accessibility Manager

05-29 06:33:11.482: W/SystemServer(96): ***********************************************

05-29 06:33:11.482: A/SystemServer(96): BOOT FAILURE making display ready

05-29 06:33:11.482: A/SystemServer(96): java.lang.NullPointerException

05-29 06:33:11.482: A/SystemServer(96): at com.android.server.ServerThread.run(SystemServer.java:285)

05-29 06:33:11.488: W/dalvikvm(96): threadid=12: thread exiting with uncaught exception (group=0x409c01f8)

05-29 06:33:11.499: E/AndroidRuntime(96): *** FATAL EXCEPTION IN SYSTEM PROCESS: android.server.ServerThread

05-29 06:33:11.499: E/AndroidRuntime(96): java.lang.NullPointerException

05-29 06:33:11.499: E/AndroidRuntime(96): at com.android.server.am.ActivityManagerService.showBootMessage(ActivityManagerService.java:4051)

05-29 06:33:11.499: E/AndroidRuntime(96): at com.android.server.ServerThread.run(SystemServer.java:297)

05-29 06:33:11.508: I/Process(96): Sending signal. PID: 96 SIG: 9

05-29 06:33:11.568: I/Zygote(37): Exit zygote because system server (96) has terminated

05-29 06:33:11.588: E/installd(41): eof

05-29 06:33:11.588: E/installd(41): failed to read size

05-29 06:33:11.588: I/installd(41): closing connection

05-29 06:33:11.588: I/ServiceManager(30): service 'telephony.registry' died

05-29 06:33:11.588: I/ServiceManager(30): service 'content' died

05-29 06:33:11.588: I/ServiceManager(30): service 'gfxinfo' died

05-29 06:33:11.588: I/ServiceManager(30): service 'entropy' died

05-29 06:33:11.588: I/ServiceManager(30): service 'cpuinfo' died

05-29 06:33:11.588: I/ServiceManager(30): service 'account' died

05-29 06:33:11.588: I/ServiceManager(30): service 'permission' died

05-29 06:33:11.588: I/ServiceManager(30): service 'package' died

05-29 06:33:11.588: I/ServiceManager(30): service 'activity' died

05-29 06:33:11.588: I/ServiceManager(30): service 'sensorservice' died

05-29 06:33:11.588: I/ServiceManager(30): service 'batteryinfo' died

05-29 06:33:11.588: I/ServiceManager(30): service 'accessibility' died

05-29 06:33:11.588: I/ServiceManager(30): service 'meminfo' died

05-29 06:33:11.588: I/ServiceManager(30): service 'usagestats' died

05-29 06:33:11.588: I/ServiceManager(30): service 'power' died

05-29 06:33:11.668: I/ServiceManager(30): service 'media.audio_policy' died

05-29 06:33:11.668: I/ServiceManager(30): service 'media.audio_flinger' died

05-29 06:33:11.668: I/ServiceManager(30): service 'media.player' died

05-29 06:33:11.668: I/ServiceManager(30): service 'media.camera' died

05-29 06:33:11.768: I/Netd(120): Netd 1.0 starting

05-29 06:33:11.858: E/Netd(120): Unable to bind netlink socket: No such file or directory

05-29 06:33:11.858: E/Netd(120): Unable to open quota2 logging socket

[JF Dionne]

I would need a little more code, but I think your added lines are querying services that are not started yet.

And this makes the whole system server crash.

You need to add your lines a little lower in the method.