Re: [Discuss-gnuradio] Timers

[Eric Blossom]

On Wed, Nov 01, 2006 at 05:17:08PM +0800, Jeremy Chew wrote:
> Hello,
> 
> I plan to use setitimer() for my GR development. I understand that each 
> Linux process can have only one timer at a time. Is this right?

> If so, does GR use the timer? How do I avoid clashing with the GR over the 
> timer?

In general, we handle time by counting samples.  For example, with the
USRP as the i/o device, we _know_ the actual data rate across the USB.

We don't explicitly use setitimer, but there's a chance that Python
could be using it behind the scenes for reasons of it's own.

FYI, when the high-resolution timing support is complete, it will
effectively be counting samples too -- only this time out in the FPGA.

Eric