On 2010-05-07 03:00+0100 Leo wrote:
> Hello,
>
> I am using plplot through the common lisp binding cl-plplot.
>
> While using the xwin driver on linux, if I close the plot window using
> the standard way i.e. clicking on the 'close' button, it crashes and
> takes the lisp with it. (hitting return exit normally).
>
> This appears to be due to somewhere in the plplot code calls exit.
> Further debug info can be found in http://paste.lisp.org/display/98883.
>
> The bug is so easy to happen accidentally and the impact is very
> intrusive. I wonder if someone can help fix this bug?
>
> On OSX I use aqt driver and I have no such crashes. Thank you.
Hi Leo:
I confirm the issue for -dev xwin, -dev xcairo, but not -dev wxwidgets or
-dev qtwidget for the C core library of PLplot. These results clearly show
the device drivers are the source of the trouble and not the cl-plplot lisp
bindings or even the PLplot core library.
softw...@raven> examples/c/x01c -dev xwin
PLplot library version: 5.9.5
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server
"localhost:10.0"
after 2957 requests (42 known processed) with 0 events remaining.
softw...@raven> examples/c/x01c -dev xcairo
PLplot library version: 5.9.5
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server
"localhost:10.0"
after 39 requests (30 known processed) with 0 events remaining.
softw...@raven> examples/c/x01c -dev wxwidgets
PLplot library version: 5.9.5
Program aborted
softw...@raven> examples/c/x01c -dev qtwidget
PLplot library version: 5.9.5
In all four cases I closed the window by hitting the "Close" window button
supplied by the window manager at the far upper right. That action
generated a fatal error for -dev xwin and -dev xcairo, but generated the
"Program aborted" message and smooth exit after that for -dev wxwidgets and
simply generated a smooth exit for -dev qtwidget. The actions of closing the
window by using the upper-left menu item or by hitting alt+F4 gave the same
results; fatal IO errors for -dev xwin and -dev xcairo but the desired
smooth exits for -dev wxwidgets (with "Program aborted" message) and -dev
qtwidget (with no message).
I think the solution is better handling of the case when the X server is
suddenly not available (as apparently happens when you close the window) for
-dev xwin and -dev xcairo, but someone else with more driver and X expertise
than me will have to implement fixes.
Alan
__________________________
Alan W. Irwin
Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).
Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
__________________________
Linux-powered Science
__________________________
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