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Re: [gpsd-dev] gpsd processor load
From: |
Gary E. Miller |
Subject: |
Re: [gpsd-dev] gpsd processor load |
Date: |
Wed, 30 Oct 2013 17:45:41 -0700 |
Yo Chris!
On Wed, 30 Oct 2013 17:21:47 -0700
Chris Kuethe <address@hidden> wrote:
> > I baffled how they can manage without TIOCMIWAIT. How can you
> > write any sort of low level serial client without it? BSD has to
> > have some way to wake on control changes...
> >
>
> Not in the way pps needs.
I looked at your links. Nothing pops out.
> > Maybe, but it all needs KPPS to work to get any sort of time. And
> > if KPPS is working we just need to wake up the thread a few times a
> > second and check if KPPS has anything for us.
> >
>
> And the interface we're using on linux doesn't exist on bsd.
Well, it does on FreeBSD:
http://docs.freebsd.org/doc/4.5-RELEASE/usr/share/doc/ntp/ldisc.htm
" The entire PPS interface functionality is currently provided by
inline code in the timepps.h header files implemented for SunOS,
Solaris, FreeBSD, Linux and Tru64. "
Why would freebsd support RFC 2783 and openbsd not?
BSD also support TIOCDCDTIMESTAMP, which might be a bitch to use...
RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
address@hidden Tel:+1(541)382-8588
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- [gpsd-dev] gpsd processor load, Eric S. Raymond, 2013/10/30
- Re: [gpsd-dev] gpsd processor load, Greg Troxel, 2013/10/30
- Re: [gpsd-dev] gpsd processor load, Gary E. Miller, 2013/10/30
- Re: [gpsd-dev] gpsd processor load, Andy Walls, 2013/10/30
- Re: [gpsd-dev] gpsd processor load, HÃ¥kan Johansson, 2013/10/31
- Re: [gpsd-dev] gpsd processor load, Greg Troxel, 2013/10/31
- Re: [gpsd-dev] gpsd processor load, Andy Walls, 2013/10/31
- Re: [gpsd-dev] gpsd processor load, Gary E. Miller, 2013/10/31
- Re: [gpsd-dev] gpsd processor load, Gary E. Miller, 2013/10/31