[ gpsdrive ] Infinite loop when starting gpsdrive in mapnik-mode

[Guenther Meyer]

Am Montag 02 März 2009 schrieb Hamish:
> Jannis wrote:
> > gpsdrive will enter an infinite loop when started in mapnik mode (CPU
> > goes to 100%, can only be killed with SIGKILL).
>
> what if you rename ~/.gpsdrive/gpsdriverc to something else so you start
> with a fresh one (in case it got corrupted)
>
> > When I edit my gpsdriverc to not use mapnik mode, gpsdrive
> > starts up as normal displaying a raster-map. I can then use the
> > Map Mode menu to enable mapnik and it works as expected. So this is
> > probably not a problem with mapnik (it works using the
> > generate_image.py-script, too).
> > I'm using gpsdrive version "Version 2.10pre7.svn;
> > $Id: gpsdrive.c 2297 2009-02-10 13:11:38Z rosscoe $". When I start
> > gpsdrive with -D 99 it will loop enter the loop about here:
> >
> > "...
> > read_icon(gauge.png): FOUND
> > /usr/local/share/gpsdrive/pixmaps/gauge.png
> > expose_compass()
> > expose_mini_cb()
> > calldrawmarker_cb()
> > expose_gpsfix()
> > event:ff51 key:Q
> > Key pressed: ff51
> > calldrawmarker_cb()
> > expose_gpsfix()
> > calldrawmarker_cb()
> > expose_gpsfix()
> > drawmacker_cb()
> > rendering mapnik map ....
> > expose_cb()
> >   setting borderlimit to 112
> >   setting size of mapview to 664x564 px
> > display_status(Keine Karte für diese Position verfügbar!)
> > calcxy(_,_,-38767,-28969,1) ---> 50,9.07045
>
>           ^^^ is _,_ normal??
>
> > map zoomed!
> > expose_mini_cb()
> > draw_grid()
> > calcxytopos(0,0,_,_,1) ---> 48.1512,11.5588
> > calcxytopos(0,564,_,_,1) ---> 48.1151,11.5588
> > calcxytopos(664,0,_,_,1) ---> 48.1512,11.6014
> > calcxytopos(664,564,_,_,1) ---> 48.1151,11.6014
> > Draw Grid: (nan,nan) - (nan,nan) Step nan for Ef.Scale 0
> > Zoom 1
> > Draw Grid: (nan) Iterations for lat
> > Draw Grid: (nan) Iterations for lon
> > Draw Grid: (nan,nan) - (nan,nan) Step nan for Ef.Scale 0
> > Zoom 1
> > Draw Grid: (nan) Iterations for lat
> > Draw Grid: (nan) Iterations for lon
> > Draw Grid: (nan,nan) - (nan,nan) Step nan for Ef.Scale 0
> > Zoom 1
> > Draw Grid: (nan) Iterations for lat
> > Draw Grid: (nan) Iterations for lon
> > ..."
> >
> > Anyone got a good idea what this may be?
>
> check for a map scale set to 0 in your map_koords.txt file?
> I don't know.
>
> In r2309 I've just committed some code to draw_grid.c to check that
> the grid line distance step is not nan or zero before it tries to
> find a nice grid size in range. So no more getting stuck in the loop,
> but it hasn't solved the true cause.
>
just guessing:
maybe gpsdrive tries to draw a grid before mapnik has rendered and supplied a 
map? do you have the same behaviour when "draw grid" is off?
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