Hello
Recently we did a small example to evaluate the different kind of ROOT I/O
event model combination for G4
4 types of ROOT I/O were evaluated:
TTree I/O + "small "hit" objects"
TTree I/O + "TTable of the hit structure"
Regular I/O + "small "hit" objects"
Regular I/O + "TTable of the hit structure"
No probem like that you are speaking about has been discovered yet.
Valeri
> Hello Rooters,
> I'm using Geant-4.3.0 for simulating experiments
> and have grafted
> on ROOT in order to save the simulated events in a TTree/TFile. Its a
> very preliminary implementation, but works well enough except that when
> the code exits it dumps core after a segmentation error associated with
> a call to malloc. At the moment this is only an irritation as prior to
> the error the ROOT file has been closed
> properly....as has the G4 user interface. However I worry that this may
> be a symptom of more dire problems to come as the G4-Root interface is
> developed.
>
> Does anyone have experience of G4+ROOT use?
>
> I'm running on RedHat 6.2 (egcs 1.1.2). G4.3.0 is build with shared
> libraries. The
> ROOT libraries are version 2.25.03. Core file analysis gives....
> Program terminated with signal 11, Segmentation fault.
> where...
> #0 0x419530b6 in chunk_free (ar_ptr=0x419e7d40, p=0x808fba8) at
> malloc.c:3097
> #1 0x41952f9a in __libc_free (mem=0x808fbb8) at malloc.c:3023
> #2 0x4004fd00 in G4Allocator<ModBBSciEFBHit>::~G4Allocator ()
> from /home/jrma/cern/geant4/lib/Linux-g++/libModBB.so
> #3 0x40047741 in global destructors keyed to
> ModBBSciEFBHit::ModBBSciEFBHit ()
> from /home/jrma/cern/geant4/lib/Linux-g++/libModBB.so
> #4 0x40029eed in __do_global_dtors_aux ()
> from /home/jrma/cern/geant4/lib/Linux-g++/libModBB.so
> #5 0x40054ce1 in ?? () from
> /home/jrma/cern/geant4/lib/Linux-g++/libModBB.so
> #6 0x4000af36 in _dl_fini () at dl-fini.c:40
> #7 0x4191a23a in exit (status=0) at exit.c:57
> #8 0x419119d1 in __libc_start_main () at
> ../sysdeps/generic/libc-start.c:92
>
> Cheers, John
>
> --
> Dr. John R.M. Annand, Physics & Astronomy,
> University of Glasgow, GLASGOW G12 8QQ, Scotland.
> Tel. +44 141 330 6428, Fax. +44 141 330 5889
> Email: j.annand@physics.gla.ac.uk
>
>
>
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