[Xen-devel] Re: [PATCH] add timeouts to mini-os

[Grzegorz Milos <gm281@xxxxxxxxx>]

Hi Robert,

Having timeout timers in MiniOS would be very useful indeed (I had a  
few people asking about that already).
Timers in Xen and Linux are a bit different then your implementation  
for MiniOS (inspect xen/common/timer.c and <linux>/kernel/timer.c for  
more detail). The way that Linux/Xen handles timers is slightly more  
flexible, however the functionality that you could put in Mini-OS  
timer handler is very limited (you can only wake up a thread/set of  
threads really). I think we can therefore stick to this solution for  
now. I'll have a look through the code tomorrow, and let you know if  
I have any comments.
Thanks.
Gregor

On 1 Oct 2006, at 00:18, Robert Kaiser (FH) wrote:

> Hi Gregor,
>
> attached is a patch to mini-os. It removes the debug print of  
> current time
> (which didnt work anyway) and adds support for timed sleeps. The  
> application
> code now has a thread which is activated periodically (once every  
> second) by
> means of the new sleep function and prints out the current time, so  
> the
> program now actually does what the README says. The idle thread now  
> blocks as
> long as necessary (i.e. until the nearest timeout expires) instead  
> if the
> fixed 10 seconds as before.
>
> Please review it and consider for inclusion.
>
> Cheers
>
> Rob
> <minios.patch>

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