On Mon, Mar 17, 2008 at 12:18:05PM -0400, Hal Vaughan wrote:
So there's nothing I can use to try to split time evenly between them?
No and yes. Yes, if you use POSIX realtime scheduling and SCHED_RR policy. But this is rather advanced, and if you have a bug in your program, nothing else will get to run, i.e. you will end up with a locked-up machine.
bad idea. If the port gets extra data while I'm doing something else, won't it store in the buffer?
Yes. But the question is -- when the data from the buffer will be delivered to the application. Or vice-versa: when you send something to the stream, when will it be delivered to the device?
That may help, but in the long run, there are people that might be using this in connection with a GUI. How do I make sure my stuff doesn't take up all the resources? Or is that partly the GUI programmer's job? To split
You don't, that's the kernel's job.