Problem compiling macro with real data

ROOT
1

Hey,

i’m trying to run the following code:

void example_01()
{
    TFile *fin = new TFile( "jpsi.root" );
    
    TTree *T;
    fin->GetObject("T",T);
    
    BEvent* Event = new BEvent();
    T->SetBranchAddress("BEvent",&Event);
    
    TH1F *h_jpsi = new TH1F ( "h_jpsi", "Invariant Mass of #mu^{+}#mu^{-}", 140, 2.7, 3.4 );
    
    int NEvents = (int)T->GetEntries();
    for (int idx=0;idx<NEvents;idx++) {
        
        if ((idx % 1000) == 0) printf ( "At Event: %d/%d.\n",idx,NEvents);
        T->GetEntry(idx);
        
        int NParticles = Event->NParticles();
        TClonesArray& Plist = *(Event->GetParticleList());
        
        for (int i=0;i<NParticles;i++) {
            for (int j=0;j<NParticles;j++) {
                
                BParticle* P1 = (BParticle*)Plist[i];
                BParticle* P2 = (BParticle*)Plist[j];
                
                if (P1->pid()!=MUON  || P2->pid()!=MUON ) continue;
                if (P1->charge()!=+1 || P2->charge()!=-1) continue;
                
                float Px = P1->px() + P2->px();
                float Py = P1->py() + P2->py();
                float Pz = P1->pz() + P2->pz();
                float E  = P1->e()  + P2->e();
                float P  = sqrt(Px*Px + Py*Py + Pz*Pz);
                float Mass = sqrt(E*E - P*P);
                
                h_jpsi->Fill(Mass);
            }
        }
    }
    
    TCanvas* c1 = new TCanvas("c1","c1",600,400);
    h_jpsi->SetFillColor(622);
    h_jpsi->Draw();
}

First, i use .L peaks.C (name of the file). Then i do: example_01() and i get this:

" IncrementalExecutor::executeFunction: symbol ‘_ZN6BEvent15GetParticleListEv’ unresolved while linking [cling interface function]!
You are probably missing the definition of BEvent::GetParticleList()
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol ‘_ZN6BEventC1Ev’ unresolved while linking [cling interface function]!
You are probably missing the definition of BEvent::BEvent()
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol ‘_ZTI6BEvent’ unresolved while linking [cling interface function]!
You are probably missing the definition of typeinfo for BEvent
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol ‘_ZN6BEvent10NParticlesEv’ unresolved while linking [cling interface function]!
You are probably missing the definition of BEvent::NParticles()
Maybe you need to load the corresponding shared library? "

I really don’t know what’s going on, cause i have been running several similar codes perfectly.

Thanks!

2

As the error message says, did you load the library containing the definition of BEvent::GetParticleList(), BEvent::BEvent(), and BEvent::NParticles()?

3

Hey, bellenot. I tried, but i got the message:

Info in TUnixSystem::ACLiC: creating shared library /home/mapse/VisualS/Aulas 10 e 11 - ADFAE/Onze/./BEvent_cc.so
sh: 1: Syntax error: Unterminated quoted string
Error in : Compilation failed!
BParticle.cc/BEvent.cc loaded.

thanks.

4

Could you try in a location without the Aulas 10 e 11 - ADFAE subdirectory? (this is maybe confusing ACLiC)

5

BTW, you can also try to load the macro without compiling it (if it’s only one file…)