EZGraph problem

[Paul Johnson]

I'm using the EZGraph feature that allows one to pass an integer 
argument along with the method that collects data from an object. This 
is a feature that was my idea and it works, mostly, except when I try to 
archive hdf5 data. I want the graph to be shown on the screen, and  I 
also want it to archive to an hdf data set. I've stared at the Swarm 
source quite a while trying to understand what is happening.

If I try both GUI and hdf5 writing, it is crash city.  This crash only 
appears when I try the setUnsignedArg thing with the graph sequences. 
Regular garden variety EZGraphs don't croke when I try both the screen 
and file output.

Here is the code snip I'm working with from the observer level.

  opinionGraph2 =  [EZGraph createBegin: self];
  [opinionGraph2 setHDF5Container: hdf5container];
  [opinionGraph2 setFileOutput: YES];
   [opinionGraph2 setGraphics: YES];
        //Change previous to NO, and there is no crash.
        // The hdf5 output is fine
        //  [opinionGraph2 setGraphics: NO];
  [opinionGraph2 setFileName: "testname2"];

  SET_WINDOW_GEOMETRY_RECORD_NAME (opinionGraph);

  [opinionGraph2 setTitle: "Average Opinion"];
  [opinionGraph2 setAxisLabelsX: graphtitle Y: "Average Of Opinions"];
  opinionGraph2 = [opinionGraph2 createEnd] ;

  [opinionGraph2  enableDestroyNotification: self
                 notificationMethod: @selector (_opinionGraphDeath_:)];

  for(i=0; i < [Citizen getNumCultureFeatures]; i++)
    {
      char  name[15];
      sprintf(name,"feature %d",i);
      id seq = [opinionGraph2 createSequence: name
                             withFeedFrom: modelSwarm
                             andSelector: M(getAverageFeature:)];
      [seq setUnsignedArg: i];
    }


The runtime error message is:

*** event raised for error: InvalidAllocSize
*** function: _i_Zone_c__allocBlock_(), file: 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/defobj/Zone.m, 
line: 415
> Requested allocation size must be at least one byte.
> (Requested allocation size was zero.)
*** execution terminating due to error
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/defobj/Symbol.m:173 
-[Error(c) _raiseEvent:]
Aborted (core dumped)

And here is the back trace:

#0  0x40715ae1 in __kill () from /lib/i686/libc.so.6
#1  0x407158ba in raise (sig=6) at ../sysdeps/posix/raise.c:27
#2  0x40717062 in abort () at ../sysdeps/generic/abort.c:88
#3  0x40288f3b in debugabort ()
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/misc/de 
                            bugabort.c:9
#4  0x401faa4d in _i_Error_c__raiseEvent_ ()
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/defobj/ 
                            Symbol.m:173
#5  0x401fb7fc in _i_Zone_c__allocBlock_ (self=0x80ada70, 
_cmd=0x402261c0, size=0)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/defobj/ 
                            Zone.m:415
#6  0x401fd827 in _i_FArguments_c__addArgument_ofType_ (self=0x8320060,
    _cmd=0x401836e8, value=0x8288f0c, type=fcall_type_void)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/defobj/ 
                            FArguments.m:166
#7  0x4016fe51 in _i_MessageProbe___createFCall__ (self=0x8288e78,
    _cmd=0x40183700, target=0x81da848)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/objectb 
                            ase/MessageProbe.m:330
#8  0x401700c1 in _i_MessageProbe__dynamicCallOn_ (self=0x8288e78,
    _cmd=0x40183728, target=0x81da848)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/objectb 
                            ase/MessageProbe.m:351
#9  0x40170123 in _i_MessageProbe__doubleDynamicCallOn_ (self=0x8288e78,
    _cmd=0x40048470, target=0x81da848)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/objectb 
                            ase/MessageProbe.m:384
#10 0x4003d878 in _i_ActiveOutFile__step (self=0x8288e78, _cmd=0x4004abd8)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/analysi 
                            s/ActiveOutFile.m:50
#11 0x400412c7 in _i_EZSequence__step (self=0x8282ce8, _cmd=0x4004ab30)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/analysi 
                            s/EZGraph.m:580
#12 0x401efb17 in _i_Object_s__perform_ (self=0x8282ce8, _cmd=0x402790c0,
    aSel=0x4004ab30)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/defobj/ 
                            DefObject.m:571
#13 0x4025a6bf in _i_Collection_any__forEach_ (self=0x82832d8, 
_cmd=0x4004ab38,
    aSelector=0x4004ab30)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/collect 
                            ions/Collection.m:202
#14 0x40040ee2 in _i_EZGraph__step (self=0x827f678, _cmd=0x80680f0)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/analysi 
                            ---Type <return> to continue, or q <return> 
to quit---
s/EZGraph.m:503
#15 0x08050fc8 in _i_ObserverSwarm___update_ (self=0x816ec08, 
_cmd=0x8068160)
    at ObserverSwarm.m:520
#16 0x4001befb in L10 () from /usr/lib/swarm/libswarm.so.0
#17 0x4020e0b0 in objc_call (fa=0x829f780)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/defobj/_fcall.m:185
#18 0x401fcf42 in _i_FCall_c__performCall (self=0x82a0068, _cmd=0x401afc00)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/defobj/FCall.m:735
#19 0x4019b08b in _i_ActionTo_c___performAction__ (self=0x829f738,
    _cmd=0x401b4b98, anActivity=0x82a53f0)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/activity/Action.m:309
#20 0x401a55ab in _i_Activity_c___run_ (self=0x82a53f0, _cmd=0x401b4b70)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/activity/XActivity.m:243
#21 0x401a545c in _i_Activity_c___run_ (self=0x82a5890, _cmd=0x401b4b70)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/activity/XActivity.m:193
#22 0x401a545c in _i_Activity_c___run_ (self=0x82a5970, _cmd=0x401b4b70)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/activity/XActivity.m:193
#23 0x401a545c in _i_Activity_c___run_ (self=0x82a5b80, _cmd=0x401b4b70)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/activity/XActivity.m:193
#24 0x401a545c in _i_Activity_c___run_ (self=0x82a3ec8, _cmd=0x401b4af8)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/activity/XActivity.m:193
#25 0x401a51dc in _i_Activity_c__run (self=0x82a3ec8, _cmd=0x4006b218)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/activity/XActivity.m:79
#26 0x4005caca in _i_ControlPanel__startInActivity_ (self=0x81ad820,
    _cmd=0x4006ba60, activityID=0x82a3ec8)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/simtoolsgui/ControlPanel.m:80
#27 0x4005d574 in _i_GUISwarm__go (self=0x816ec08, _cmd=0x8066050)
    at 
/home/pauljohn/LinuxDownloads/redhat/BUILD/swarm-2.1.133.20020318/src/simtoolsgui/GUISwarm.m:56
#28 0x08049eb7 in main (argc=1, argv=0xbfffdad4) at main.m:71
#29 0x40703627 in __libc_start_main (main=0x8049cd0 <main>, argc=1,
    ubp_av=0xbfffdad4, init=0x8049864 <_init>, fini=0x805bffc <_fini>,
    rtld_fini=0x4000dcc4 <_dl_fini>, stack_end=0xbfffdacc)
    at ../sysdeps/generic/libc-start.c:129


If the dual usage of GUI and hdf5 file output did not work at all, then 
I would blame code in EZGraph's

 -createGraphSequence:forSequence:withFeedFrom:andSelector

method, because it looks to me like, in that method, the thing 
"aGrapher" gets created twice if (graphics) and (hdf5container) are both 
true.

But if this were the problem, I would get the crash with EZGraph all the 
time when I try both GUI and hdf5, but in fact I see it only with 
setUnsignedArg:....

So, I'm open to suggestions


--
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ku.edu/~pauljohn
University of Kansas                  Office: (785) 864-9086
Lawrence, Kansas 66045                FAX: (785) 864-5700


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