I was playing a little with demo on linux and I was able to crash fb_sdl process. I could do it only after suspend/resume of linux host and I understand that this process exists more for testing/development purpose but I have more general question about this crash.
Crash was due to unhandled Ring_buffer::Overflow exception in:
for (;;) input_session.submit(wait_for_event());
What is the proper way to handle such situations?
Should it block on submit call?
Should submit call be wrapped with try/catch and retried after some time?
Hello Tomasz,
On Wed, Jan 28, 2015 at 08:15:59AM +0100, Tomasz Gajewski wrote:
I was playing a little with demo on linux and I was able to crash fb_sdl process. I could do it only after suspend/resume of linux host and I understand that this process exists more for testing/development purpose but I have more general question about this crash.
Crash was due to unhandled Ring_buffer::Overflow exception in:
for (;;) input_session.submit(wait_for_event());
What is the proper way to handle such situations?
Should it block on submit call?
Should submit call be wrapped with try/catch and retried after some time?
You are on the right track. We addressed the issue for our general Input::Session_component, which is also used by fb_sdl. Please have a look at
https://github.com/genodelabs/genode/blob/master/repos/os/include/input/comp...
The fix is not part of Genode 14.11 but already in our master branch since January 9 2015. So you could just 'git cherry-pick 0f18ecc142' or simply apply the commit as patch to your source tree.
Regards
-
Christian Helmuth -
Tomasz Gajewski