Hi Alan
Thanks for that. I tested under Windows and Linux and saw no issues, but I
guess that was fluke.
Out of interest is it possible you have more than one instance of wxPLViewer
running at once? I wonder if the memory maps could be clashing.
I will look into this as a matter of urgency
Phil
-----Original Message-----
From: "Alan W. Irwin" <ir...@beluga.phys.uvic.ca>
Sent: 21/02/2015 17:45
To: "Phil Rosenberg" <p.d.rosenb...@gmail.com>
Cc: "PLplot development list" <Plplot-devel@lists.sourceforge.net>
Subject: Re: [Plplot-devel] Redesigned wxWidgets Driver
Hi Phil:
I am testing current master tip (c3fed1f, "Undid changes...."), but
that recent commit from you has not fixed the intermittent memory
issue. To illustrate, here is a run of repeat attempts for standard
example 1, where the first 3 are fine, but the last one failed:
software@raven> examples/c/x01c -dev wxwidgets
PLplot library version: 5.10.0
software@raven>
software@raven> examples/c/x01c -dev wxwidgets
PLplot library version: 5.10.0
software@raven> examples/c/x01c -dev wxwidgets
PLplot library version: 5.10.0
software@raven> examples/c/x01c -dev wxwidgets
PLplot library version: 5.10.0
*** PLPLOT WARNING ***
Error creating memory map for wxWidget instruction transmission. The
plots will not be displayed
Also, example 8 generates this message every time it is run from
the command line, but if I do that under valgrind wxPlViewer is
launched properly and displays the pages of example 8 without issues (go
figure)!
Note, before wxPlViewer is launched for example 8 (which means
valgrind doesn't test that detached wxPlViewer process, and I am not
sure whether it is possible to use valgrind on a detached process)
there is one uninitialized memory error reported by valgrind;
==4718== Conditional jump or move depends on uninitialised value(s)
==4718== at 0x6E0E566: wxPLDevice::SetupMemoryMap() (in
/home/software/plplot/HEAD/build_dir/drivers/wxwidgets.so)
==4718== by 0x6E0F5ED: wxPLDevice::ProcessString(PLStream*, EscText*) (in
/home/software/plplot/HEAD/build_dir/drivers/wxwidgets.so)
==4718== by 0x4E4F9A8: plP_esc (in
/home/software/plplot/HEAD/build_dir/src/libplplot.so.12.0.1)
==4718== by 0x4E528BC: plP_text (in
/home/software/plplot/HEAD/build_dir/src/libplplot.so.12.0.1)
==4718== by 0x4E7BB5B: c_plmtex (in
/home/software/plplot/HEAD/build_dir/src/libplplot.so.12.0.1)
==4718== by 0x4019AA: main (in
/home/software/plplot/HEAD/build_dir/examples/c/x08c)
I would view this issue as a serious one. For example, it might
be the cause of all the intermittent failures detailed above. Of
course, to pin down the exact source code line where this issue is
occurring, you have to compile with CXXFLAGS=-g.
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); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); 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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