Hi Darren,
See page 86 of the Users Guide. There are 3 pages about resetting the
Interpreter environment.
The remark is only for gROOT->Reset.
Rene Brun
Darren Grant wrote:
>
> Hi Rene
>
> Does this apply to all gROOT functions or only the Reset command? Have I
> missed in the documentation somewhere as to the "why" this should not be
> done?
>
> Thanks
> Darren
>
> On Mon, 7 Jun 2004, Rene Brun wrote:
>
> > gROOT->Reset() should not be called in a named script or a compiled program.
> >
> > Rene Brun
> >
> > Darren Grant wrote:
> > >
> > > Hi
> > >
> > > I have come across an error I dont understand in running some root code.
> > > I have tried to include the
> > >
> > > gROOT->Reset();
> > >
> > > command in my code. I compile without errors but when I run the code I
> > > get the following error:
> > >
> > > *** Break *** segmentation violation
> > > Generating stack trace...
> > > 0x4068b65e in G__scratch_globals_upto + 0x27 from
> > > /home/dgrant/root/lib/libCint.so
> > > 0x40176439 in TCint::ResetGlobals() + 0x21 from
> > > /home/dgrant/root/lib/libCore.so
> > > 0x4013a698 in TROOT::Reset(char const*) + 0x32 from
> > > /home/dgrant/root/lib/libCore.so
> > > 0x08049067 in main + 0x2f from matread
> > > 0x42015574 in __libc_start_main + 0xe4 from /lib/tls/libc.so.6
> > > 0x08048f9d in TFile::TFile[in-charge](char const*, char const*, char
> > > const*, int) + 0x31 from matread
> > > Abort (core dumped)
> > >
> > > A simplified version of the code is:
> > >
> > > #include <cstdio>
> > > #include <iostream>
> > > #include <string>
> > > #include "TFile.h"
> > > #include "TTree.h"
> > > #include "TH2.h"
> > > #include "TCanvas.h"
> > > #include "TVector.h"
> > > #include "TROOT.h"
> > > #include "TCint.h"
> > >
> > > using namespace std;
> > >
> > > TROOT rootBase("analysis","ROOT analysis environment");
> > > int main()
> > > {
> > > gROOT->Reset();
> > > TFile *file = new TFile ("test.root", "RECREATE");
> > > TTree *tree = new TTree ("tree", "Testing");
> > >
> > > }
> > >
> > > And this is compiled with a makefile:
> > >
> > > # Makefile
> > > #
> > > ROOTLIBS = $(shell root-config --libs) -lMinuit #-lTable
> > > -lHtml
> > > ROOTGLIBS = $(shell root-config --glibs)
> > > ROOTINCLUDE ?= $(shell root-config --incdir)
> > > MATLABDIR = /data4/dgrant/Matlab_Inst/extern/lib/glnx86
> > > MATLABD2 = /data4/dgrant/Matlab_Inst/bin/glnx86
> > >
> > > CXX = g++
> > > CXXFLAGS = -O2 -Wall -fPIC -I$(ROOTINCLUDE)
> > >
> > > OBJS = matread.o
> > >
> > > matread: $(OBJS)
> > > $(CXX) $(CXXFLAGS) $(ROOTLIBS) $(ROOTGLIBS) -L$(MATLABDIR) -lmat
> > > -lmx -l
> > > mmfile -lmwservices -L$(MATLABD2) -lmatlb -lmex -lmwmpath -lmwudd -o $@ $^
> > >
> > > matread.d: matread.cxx
> > > @echo "Generating dependency file $@"
> > > @set -e; rm -f $@
> > > @$(CXX) -M $(CXXFLAGS) $< > $@.tmp
> > > @sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.tmp > $@
> > > @rm -f $@.tmp
> > >
> > > include matread.d
> > >
> > > matread.o: matread.cxx matread.h
> > > $(CXX) -c $(CXXFLAGS) $<
> > >
> > > clean:
> > > rm -f *.o
> > > rm -f *.d
> > >
> > > Has anyone come across this before and maybe offer some advice?
> > >
> > > Thanks so much!
> > > Cheers
> > > Darren
> >
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