Re: [Discuss-gnuradio] fusb::_reap: Interrupted System Call

[Eric Blossom]

On Tue, Oct 16, 2007 at 12:47:59PM -0400, Jared Jensen wrote:
> 
> Eric,
> 
>      Ubuntu, Feisty.  2.6.20-16-generic.  HP dv2000
> laptop, Core 2 Duo, 1.6 GHz.  2 GB RAM, 160GB HDD 5400 RPM (But I'm not
> doing much disk I/O at all).  
> 
>      I get the error message
> every 10-15 seconds or so.  Sometimes I won't see it for minutes at a
> time, and other times, I'll see it often; like multiple times in a few
> seconds.  Like I said, no data is missing (as far as I can tell), but
> this pops up frequently; apparently from the libusb driver.  I don't
> get overruns, just this.  Also, as I said, I can't see any missing
> data, but I also can't 100% guarantee that I'm not losing some data, so
> it concerns me a little.

Without chasing through more code than I just did, I can't say with
certainty if you're losing data or not, but I suspect that you're not.

I would guess that you're using some kind of time keeping alarm that's
setting a periodic interrupt, and that's what you're seeing (E.g.,
sleep or alarm).  Are you expecting to be getting a SIG* in this
thread?  If not, you may want to take a look at pthread_sigmask.
Using threads and signals together is a bit of a black art.

Eric