#include <iostream>
#include <vector>

#include "TH1.h"
#include "TFile.h"
#include "TKey.h"
#include "TString.h"
#include "TDirectory.h"

using namespace std;

void listDir(TDirectory& d);

void histClone()
{
  TH1::AddDirectory(kFALSE);
  TFile fileA("fileA.root","RECREATE");
  TFile fileB("fileB.root","RECREATE");
  vector<TH1I> histVec;
  //histVec.reserve(100);

  for(int i=0;i<10;i++){
    TString name;
    name.Form("hist_%d",i);
    TH1I tmp(Form("%stmp",name.Data()),name.Data(),10,0.0,1.0);
    tmp.SetDirectory(0);

    histVec.push_back(tmp);
    histVec.back().SetName(name.Data());
    histVec.back().SetDirectory(&fileA);

    cout<<"i= "<<i<<endl;
    cout<<"fileA has "<<fileA.GetList()->GetSize()<<" entries"<<endl;
    cout<<"fileB has "<<fileB.GetList()->GetSize()<<" entries"<<endl;

    listDir(fileA);
  }

  for(int i=0;i<10;i++)
    histVec[i].SetDirectory(&fileA);

  cout<<"End of run debug info:"<<endl;
  listDir(fileA);
  fileA.Write();
  fileB.Write();
}

void listDir(TDirectory& d)
{
  TIterator* iter=d.GetList()->MakeIterator();
  TNamed* t;
  while(t=(TNamed*)iter->Next())
    cout<<"name: "<<t->GetName()<<endl;

  cout<<endl;
  delete iter;
}