Bare bones child process creation.

[Daniel Waddington]

Thanks Norman. I have some more to chew on now. ;)

On Wed, Mar 30, 2016 at 11:14 PM, Norman Feske <norman.feske at ...1...
> wrote:

> Hi Daniel,
>
> > Does anyone have a small code sample in the vain of
> > http://genode.org/documentation/architecture/process ?
>
> admittedly, the text on the website is not the most current description.
> Please better take Section 3.5. "Component creation" of the book as
> reference. It is more elaborate and more precise.
>
> Have you already had a look at the 'Process' constructor? It contains
> the steps described in the document in an almost verbatim way:
>
>
>
> https://github.com/genodelabs/genode/blob/master/repos/base/src/base/process/process.cc
>
> Note that this code is used on all kernels except for Linux. The
> component creation on Linux is special because we have to bootstrap new
> components via execve and use the kernel's built-in virtual-memory
> management instead of the RM service of core. You can find the
> implementation of the 'Process' class for Linux here:
>
>
>
> https://github.com/genodelabs/genode/blob/master/repos/base-linux/src/base/process/process.cc
>
> As a heads up warning, we may eventually merge the 'Process' class into
> the 'Child' class in the near future. Unless you have a pressing need to
> do the low-level creation steps manually (e.g., if you want to load
> non-ELF binaries), I recommend you to stay with the 'Child' class.
>
> When it comes to the creation of additional threads within the new
> component, please follow Alex' advise as this procedure largely depends
> on the underlying kernel.
>
> Cheers
> Norman
>
> --
> Dr.-Ing. Norman Feske
> Genode Labs
>
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