Child component creation

[Denis Huber]

Hello,

I am looking for information on how to develop a parent component which
creates new children (just the basics).

I read the first 3 chapters of the Genode book which gave me the
theoretical information, but I could not find the practical
information/tutorials on how to create a child component. Is there a
good example in the source code of genode?


Best regards
Denis

[Martin Stein]

Hi Denis,

You might have a look at the init component [1]. It creates children
according to a given configuration. An example configuration can be
found in (almost) all run scripts as init is the only child of Genodes
core component and in this role responsible for starting all other
components. Just look out for the call to 'install_config' in a run
script (a good example is the timer test [2]).

Cheers,
Martin

[1]
os/src/init
os/include/init

[2] os/run/timer.run

Post by Denis Huber
Hello,
I am looking for information on how to develop a parent component which
creates new children (just the basics).
I read the first 3 chapters of the Genode book which gave me the
theoretical information, but I could not find the practical
information/tutorials on how to create a child component. Is there a
good example in the source code of genode?
Best regards
Denis
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[Norman Feske]

Hello Denis,

welcome to the mailing list!

In addition to Martin's recommendation, you can also find another (much
simpler) example at 'os/src/test/fault_detection/' and the accompanied
run script at 'os/run/fault_detection.run'. The program starts a child
component and responds to an invalid memory access by the child. In
contrast to init, you can see the mechanics of creating the child in a
single source file.

Cheers
Norman

Post by Martin Stein
Hi Denis,
You might have a look at the init component [1]. It creates children
according to a given configuration. An example configuration can be
found in (almost) all run scripts as init is the only child of Genodes
core component and in this role responsible for starting all other
components. Just look out for the call to 'install_config' in a run
script (a good example is the timer test [2]).
Cheers,
Martin
[1]
os/src/init
os/include/init
[2] os/run/timer.run

Post by Denis Huber
Hello,
I am looking for information on how to develop a parent component which
creates new children (just the basics).
I read the first 3 chapters of the Genode book which gave me the
theoretical information, but I could not find the practical
information/tutorials on how to create a child component. Is there a
good example in the source code of genode?
Best regards
Denis