[R-pkg] New packages pmg, gWidgets, gWidgetsRGtk2

Sun, Oct 8, 2006 2:22 PM

Dear Peter,

Thanks. I think I fixed it. I was using an old version of cairoDevice so 
wasn't seeing the issue. I uploaded a new version of gWidgetsRGtk2 to CRAN 
and hopefully that fixes the issue.

Best,

John

On Sun, 8 Oct 2006, Peter Dalgaard wrote:

Peter Dalgaard <p.dalgaard at biostat.ku.dk> writes:

verzani at math.csi.cuny.edu writes:

Finally, for some reason I'm trying to track down, under Windows, pmg
is crashing when a cairoDevice graphics device is being closed. This
affects the plotnotebook and the Lattice Explorer. I have an update to
gWidgetsRGtk2 that may fix it, but I haven't had a chance to fully
test it. It can be installed with

This appears not to be Windows-specific. I see it on Fedora Core 5
too:

plot(x = ashina$vas.active, y = ashina$vas.plac, type = "p",

+     pch = 1, col = ashina$grp)

 *** caught segfault ***
address 0xfc, cause 'memory not mapped'

Traceback:
 1: dev.off(h$obj at device)
 2: handler(...)
 3: function (...) {    handler(...)    return(TRUE)}(list(obj = <S4
 object of class "gGraphicsRGtk">, action = NULL),     <pointer:
 0xc327a60>)

Possible actions:
1: abort (with core dump)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace

(2.4.0 Patched, upon closing the plotnotebook)

Followup:

gdb says 

#0  0x080e7910 in Rf_KillDevice (dd=0x8287fc0)
    at ../../../R/src/main/graphics.c:4814
4814        ((GEDevDesc*) dd)->dev->close(((GEDevDesc*) dd)->dev);
(gdb) p ((GEDevDesc*) dd)->dev
$1 = (NewDevDesc *) 0x0
(gdb) bt
#0  0x080e7910 in Rf_KillDevice (dd=0x8287fc0)
    at ../../../R/src/main/graphics.c:4814
#1  0x002202da in kill_cairo (dd=Variable "dd" is not available.
) at cairoDevice.c:197
#2  0x00db21d9 in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#3  0x00da4f8b in g_closure_invoke () from
    /usr/lib/libgobject-2.0.so.0
#4  0x00db5e3d in g_signal_override_class_closure ()
   from /usr/lib/libgobject-2.0.so.0
#5  0x00db7347 in g_signal_emit_valist () from
    /usr/lib/libgobject-2.0.so.0
#6  0x00db7509 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#7  0x010e7761 in gtk_object_destroy () from
    /usr/lib/libgtk-x11-2.0.so.0
#8  0x011bde61 in gtk_widget_hide () from /usr/lib/libgtk-x11-2.0.so.0
#9  0x00da7600 in g_object_run_dispose () from
    /usr/lib/libgobject-2.0.so.0
#10 0x010e756e in gtk_object_destroy () from
    /usr/lib/libgtk-x11-2.0.so.0
#11 0x011be045 in gtk_widget_destroy () from
    /usr/lib/libgtk-x11-2.0.so.0
#12 0x00222258 in freeCairoDesc (dd=0xc45cfd8) at cairoDevice.c:22
#13 0x0022253d in Cairo_Close (dd=0xc45cfd8) at cairoDevice.c:550
#14 0x080e78a3 in Rf_killDevice (devNum=1)
    at ../../../R/src/main/graphics.c:4826
#15 0x08121c3f in do_devoff (call=0xbbb3c2c, op=0x9c96c28,
    args=0xbbb32b8,
    env=0xbbb3d44) at ../../../R/src/main/plot.c:132
#....

I'm a bit clueless regarding gtk, but it looks like a reentrancy
issue, with a signal trying to close the device while it is already
in the process of being closed. 

(CC moved to r-devel)

        -p

-- 
   O__  ---- Peter Dalgaard             ?ster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327907

[R-pkg] New packages pmg, gWidgets, gWidgetsRGtk2

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