Hello Johannes, On Mon, Oct 16, 2017 at 01:42:04PM +0200, Johannes Kliemann wrote: > I tried to create a provide an input session from a libc (in this case > an Qt application). If I just run it from the Main struct it will > correctly announce the session but since Main never returns, no client > will be able to use it. > I tried to circumvent this by putting the application into a separate > thread but this led to the following error: > > > Error: void Libc::Kernel::run(Libc::Application_code&) called from > > non-kernel context > > Running this Qt application without wrapping it into with_libc makes it > segfault on initialization. > > What is the correct way to do this? My current main is at [1].
Unfortunately, there is no "correct" way of implementing tasks like the described currently. I must admit that with_libc() is the most confusing function in Genode currently and we therefore will remove it from the API soon. In fact, I myself did not expect that with_libc() is needed in your context but there may be dependencies unknown to me. I'd suggest a careful look into libports/src/app/avplay which provides an input session too. The approach there is to create a second Genode entrypoint for the input service and execute Qt code in the component thread. I strongly encourage you not just to copy the avplay code as it uses the older, low-level Rpc_entrypoint but use Genode::Entrypoint. Greets -- Christian Helmuth Genode Labs https://www.genode-labs.com/ · https://genode.org/ https://twitter.com/GenodeLabs · /ˈdʒiː.nəʊd/ Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ genode-main mailing list genode-main@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main
