[GRASS-dev] [GRASS GIS] #560: WinGRASS not deleting temp ppm files from map display

[GRASS GIS]

#560: WinGRASS not deleting temp ppm files from map display
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 Reporter:  isaacullah                  |       Owner:  grass-dev@…              
     Type:  defect                      |      Status:  new                      
 Priority:  critical                    |   Milestone:  6.4.3                    
Component:  Display                     |     Version:  6.4.0 RCs                
 Keywords:  v.digit ppm temp, wingrass  |    Platform:  MSWindows XP             
      Cpu:  x86-32                      |  
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Comment(by glynn):

 Replying to [comment:20 hamish]:

 > some slight improvement in devbr6 with r56444, but still more to do.
 >
 > is there a reason for the temp .ppm files not to live in
 /tmp/grass6-$USER-$PID/ with gisrc for easier cleanup if something crashes
 or MS Windows happens?

 The location of the temporary directory is chosen by the init script,
 which doesn't "publish" the location directly. If GRASS was started using
 the init script, the directory can be inferred from $GISRC, but there's no
 reliable way to know whether GRASS was actually started using the init
 script.

 Most uses of G_tempfile() are wrong (including its use by g.tempfile), but
 there isn't an official API for obtaining a normal temporary directory.
 AFAICT, the only code which should actually be using G_tempfile() is
 lib/raster/open.c and lib/raster3d/open.c.

 In light of that, G_tempfile() should probably be changed to use a similar
 mechanism to the init script (possibly by having the script set
 GRASS_TMPDIR), and a new function created for the code which requires the
 existing behaviour (i.e. requires that the temporary file is within the
 mapset directory so that rename() and link() work).

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/560#comment:21>
GRASS GIS <http://grass.osgeo.org>