Philippe Gerum wrote:
Jan Kiszka wrote:
Hi,
I was wondering if there is already a method in the fusion native skin
to turn the main thread of a process into real-time. Did not find
anything. I guess it would be easy to add such feature to librtai
based on existing syscalls. Should I write a patch? Something like
"rt_task_attach"?
Actually, you can already do this by calling the internal POSIX API
extension: pthread_init_rt(), which is part of the system skin
implicitely attached to a user-space RT app.
Then what about some redefinition for the native skin? Just to have the
API streamlined.
While thinking about this functionality some time ago for the native
RTAI skin, I must admit that I did not find obvious applications of it,
this is why it's not there in the first place. But maybe I'm wrong.
What's the compelling argument for having it?
Porting existing software which assumes that some magic calls exist to
make its main() function hard realtime :-/. Actually, I wouldn't write
new software according to this model. Ok, another argument might be that
this may save one thread if there is no other need for it and resources
are tight.
Jan
