Loading scripts

system · October 7, 2005, 9:45am

Hi,

when i try to run this script multiple times from ROOT (not closing the session and reloading it again) i have segfaults.
this doesn’t happen the first time, only the next ones
i’m using ROOT 3.10 alas i can’t change it, i have to work with this version)
but at home i have ROOT5 and all works nice.

[code]#include <TFile.h>
#include <TObjArray.h>
#include <TGraph.h>
#include <TObject.h>
#include <TCint.h>
#include <TColor.h>
#include <TGraphErrors.h>
#include <TMultiGraph.h>
#include <TMarker.h>
#include <TTree.h>
#include <TBranch.h>
#include <TFolder.h>
#include <TString.h>
#include <TH1.h>
#include <TLegend.h>
#include <THStack.h>
#include <TCanvas.h>
#include
#include
#include
#include

using namespace std;
int main(){

string titlefile =“mu10GeVtheta30RanPhi”;

const char *titlefile2 =strcat(“mu10GeVtheta30RanPhi”,“Sov.root”);
TFile *myfile =TFile::Open(titlefile2);

TCanvas *c1 =new TCanvas();
c1->SetGridx();
c1->SetGridy();
pmts->Draw(“nostack”);
pmts->SetTitle(titlefile.c_str());

TLegend *leg =new TLegend(0.80,0.55,0.99,0.80,“0”,“brNDC”);
leg->SetHeader(“PMTs”);
leg->AddEntry(pmt1,“pmt1”,“l”);
leg->AddEntry(pmt2,“pmt2”,“l”);
leg->AddEntry(pmt3,“pmt3”,“l”);
leg->AddEntry(tot,“Tot of the 3 pmts”,“l”);
leg->Draw();

TAxis *xaxis =pmts->GetXaxis();
xaxis->SetTitle(“nPE”);
TAxis *yaxis =pmts->GetYaxis();
yaxis->SetTitle(“Freq”);

c1->Modified();
c1->Print(“mu10GeVtheta30RanPhiFin.eps”);
delete c1;
delete myfile;
gROOT->Reset(“a”);
return 0;
}
[/code]

there is a way to reload this script under ROOT 3.10 withouth getting segfaults? i thought deleting the myfile object and calling Reset() was equivalent to restart the ROOT session

Thank you
Amir

pcanal · October 7, 2005, 9:01pm

Do not use gROOT->Reset from within a function!
Do not call the function within script “main”. Use some other name.

If it still crashes, use valgrind and/or send us a stack trace.

Cheers,
Philippe.

system · October 8, 2005, 12:46pm

thank you pcanal.

sadly it still crashes

[code]using namespace std;
void run(){

string titlefile =“el30MeVtheta0phi0”;

const char *titlefile2 =strcat(“el30MeVtheta0phi0”,“Sov.root”);
TFile *myfile =TFile::Open(titlefile2);

TCanvas *c1 =new TCanvas();
c1->SetGridx();
c1->SetGridy();
pmts->Draw(“nostack”);
pmts->SetTitle(titlefile.c_str());

TLegend *leg =new TLegend(0.80,0.55,0.99,0.80,“0”,“brNDC”);
leg->SetHeader(“PMTs”);
leg->AddEntry(pmt1,“pmt1”,“l”);
leg->AddEntry(pmt2,“pmt2”,“l”);
leg->AddEntry(pmt3,“pmt3”,“l”);
leg->AddEntry(tot,“Tot of the 3 pmts”,“l”);
leg->Draw();

TAxis *xaxis =pmts->GetXaxis();
xaxis->SetTitle(“nPE”);
TAxis *yaxis =pmts->GetYaxis();
yaxis->SetTitle(“Freq”);

c1->Modified();
c1->Print(“el30MeVtheta0phi0Fin.eps”);
delete c1;
delete myfile;

}
[/code]

when i try to reload it, it produces the stack trace:

[code]root [2] .L drawing.cc
reloading /mnt/scratch/AugerOffline/Auger/elettrone/grafici/./drawing.cc 0

*** Break *** segmentation violation
Generating stack trace…
0x4061ac84 in G__TypeInfo::TrueName() + 0x2a from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCint.so.3.10
0x4016b008 in TDataType::GetTypeName() const + 0x38 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x401218f3 in TROOT::GetClass(char const*, bool) const + 0xa1 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x4012303b in TROOT::IgnoreInclude(char const*, char const*) + 0xb1 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x4015ca9a in IgnoreInclude + 0x26 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x405a4d2a in G__loadfile + 0xd6f from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCint.so.3.10
0x405a2d35 in G__include_file + 0x237 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCint.so.3.10
0x405c4569 in G__exec_statement + 0x1713 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCint.so.3.10
0x405a5450 in G__loadfile + 0x1495 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCint.so.3.10
0x405c74b7 in G__reloadfile + 0x2e4 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCint.so.3.10
0x405cabe6 in G__process_cmd + 0x2231 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCint.so.3.10
0x4015d417 in TCint::ProcessLine(char const*, TInterpreter::EErrorCode*) + 0x9b from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x400e3a7b in TApplication::ProcessLine(char const*, bool, int*) + 0x421 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x40d3feae in TRint::HandleTermInput() + 0x1b2 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libRint.so.3.10
0x40d3ede0 in TTermInputHandler::Notify() + 0x24 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libRint.so.3.10
0x40d406f4 in TTermInputHandler::ReadNotify() + 0x12 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libRint.so.3.10
0x401bd1cb in TUnixSystem::CheckDescriptors() + 0xed from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x401bc9a0 in TUnixSystem::DispatchOneEvent(bool) + 0x10a from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x4013023d in TSystem::InnerLoop() + 0x1b from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x401301d6 in TSystem::Run() + 0x78 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x400e461f in TApplication::Run(bool) + 0x2d from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libCore.so.3.10
0x40d3f9da in TRint::Run(bool) + 0x2e4 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/lib/libRint.so.3.10
0x08048889 in main + 0x71 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/bin/root.exe
0x42015704 in __libc_start_main + 0xe4 from /lib/tls/libc.so.6
0x08048789 in _Unwind_Resume + 0x31 from /mnt/scratch/AugerOffline/Offline/External/ROOT/3.10.02/bin/root.exe
Root > [/code]

i’ll install Valgrind on monday…for now there is only the stack trace

Axel · October 10, 2005, 12:56pm

Hi,
you misuse strcat. Check its syntax definition, esp its first argument. Maybe that will fix it.
Axel.

system · October 10, 2005, 4:39pm

thank you Axel.

i fixed the code but the problem still remained.
So i’ve installed ROOT 5 at home, copied all the root files, done the job and copied the results back in place.

Not clean, but effective

Thank you to you all