system_server

[raja]

in the ANDROID KitKat source code I did not find system_server code in

Source Code path in KK
frameworks/base/cmds/system_server
can someone give me some idea on where it is present in the KK source code
I failed to get the path by doing grep.

What it does?
can someone give me some idea on what system_server does.

[Durgadoss Ramanathan]

You can find the SystemServer code in

frameworks/base/services/java/com/android/server/SystemServer.java

Mainly, SystemServer starts various Services like Battery Service, Power Manager Service etc,

which play a key role in Android. Googling for "Android system services" will provide you with enough info to start with.

Thanks,

Durga

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Regards
Durgadoss

[SIDDHANT GOPAL PASARI]

Raja Sir:) Can You Send Me the Source Code of the Android KitKat. Thanking you In Anticipation

On Thu, Nov 21, 2013 at 4:32 PM, raja <raja...@gmail.com> wrote:

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[shridutt kothari]

Hi Raja,

frameworks/base/cmds/system_server is removed in July mid, And as per the commit logs it was removed because system server is always forks from Zygote so Android no longer need the system_server executable which was probably broken anyhow. This makes the initialization sequence slightly more intelligible.

You can see the commit here: https://android.googlesource.com/platform/frameworks/base/+/ef69117

So now there's only /frameworks/base/services/java/com/android/server/SystemServer.java is there,

Which is directly forked from Zygote i.e from here : http://androidxref.com/4.4_r1/xref/system/core/rootdir/init.rc#486

With the help of app_main.cpp i.e. : http://androidxref.com/4.4_r1/xref/frameworks/base/cmds/app_process/app_main.cpp#223

And  ZygoteInit.cpp i.e. http://androidxref.com/4.4_r1/xref/frameworks/base/core/java/com/android/internal/os/ZygoteInit.java#487

Thanks,

Shridutt Kothari,

Impetus Infotech Ltd.

shridut...@gmail.com

[Ron M]

.../cmds/system_server has been dead code for a while, and the invocation of the code at SystemServer.java has been
in service zygote (i.e. init -->  init.rc --> app_process  ) for ages (definitely since gingerbread).
I am actually pretty sure that it hasn't changed at all since the first public versions of Android, except for some very minor change
of adding user/group permission (git log/blame/  system/core/root/init.rc  to justification in history).
AFAIK hardly anyone in google, or in the modern world had known what cmds/system_server is all about in the first place (probably some debugging measure, or something from prehistoric times), so it just found itself out of the tree on first chance.