Re: [Boost-users] Threads Don't Take Turns Under Linux (Ubuntu Gutsy Gibbon)

From: Zeljko Vrba (zvrba_at_[hidden])
Date: 2008-03-17 15:36:11

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.