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News item about dynamic re-configuration

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Norman Feske 2012-04-11 11:58:20 +02:00
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New dynamic run-time configuration support | 2012-04-11
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| A new mechanism for re-configuring subsystems at run-time paves the way
| to sophisticated general-purpose usage scenarios.
Genode's approach to system configuration facilitates a unified way for
supplying parameters to individual components as well as to entire subsystems.
Thanks to the recursive nature of Genode, complex system-integration problems
can be segregated into multiple problems of low complexity whereas each partial
problem retains to be individually testable. Thereby, this solution greatly
mitigates the manual labour of system integration even for highly complex
scenarios.
However, until now, the mechanism was limited to supplying
configuration parameters at the creation time of components. Once
a component is running, it was expected to adhere to a fixed predefined policy.
With Genode's move towards general-purpose computing, many use cases are
popping up where this limitation becomes a hindrance, for example the
dynamic changing of screen resolutions, mixer settings, user-input calibration,
and GUI policies.
To accommodate such use cases, we have extended Genode's configuration
concept with support for re-configuring components at runtime. The
new feature has landed in the master branch just now:
:[https://github.com/genodelabs/genode/commit/9a00ad7ae3ac8e4fd4867555db7671df34aac882 - Commit introducing dynamic re-configuration]:
In addition to alleviating the problems mentioned above, the new mechanism
enables many new opportunities to use Genode's slave pattern in creative
ways. To illustrate how this is supposed to work, the commit contains
examples for dynamically generating configuration data by a separate
service as well as by the master of a slave component.
GSoC 2012 application rejected | 2012-03-17
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