Hello Boris, On Fri, Jun 23, 2017 at 02:24:01PM +0200, Boris Mulder wrote: > However, sockets in lxip require the use of the with_libc() function. > When I put this around the openvpn_main() call it gives me the error: > > Error: void Libc::Kernel::run(Libc::Application_code&) called from > non-kernel context > > The catch here is that I'm calling all this from inside the code of a > Genode::Thread which executes the main function of openvpn. It seems > that I cannot use with_libc inside another thread than the entrypoint > thread.
We also identified that exposing the with_libc() in the Libc API was the wrong direction. Therefore, we'll work on moving this aspect back into the libc internals in the future. You're right with regard that with_libc is not permitted/needed for other threads/pthreads in libc applications. Blocking situations are handled differently for threads beside the main entrypoint. But, the main entrypoint thread needs to finish I/O operations by handling the I/O signals of Genode sessions used by the component. > calling with_libc inside Component::construct() does not work for the > new thread. It will fail when calling socket(). > > Is there any way of using sockets correctly inside another thread? How does socket() fail if you do not wrap the call with with_libc()? I'd expect the thread to open a socket_fs file and maybe block for the I/O operation to complete. Also, is there any reason to use a Genode::Thread which uses POSIX interfaces only (beside the admittedly more concise syntax compared to pthread_create())? 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
