Making Access to project configuration threadsafe

[Andreas Pakulat]

Hi,

I'd like to ask our thread-experts for some ideas on how we could make
accesses to the project configuration threadsafe.

Currently the project configuration object can be obtained by

virtual KSharedConfig::Ptr projectConfiguration() const = 0;

which (afaik) isn't even safe to read from in multiple threads. We need
to stick with KConfig* or KSharedKConfig* (or ::Ptr) because there's
some logic involved when creating the KConfig object from our two
project config files.

One way I can see is having a static helper function that creates a
KConfig object from two given files which can be called from any thread.
The downside here is that plugins get access to either the (possibly
remote) project files or temporary copies of them and they can do
changes which would be overwritten on project closing. With a
KSharedConfig this doesn't happen.

Andreas

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