rf507_debugtools.C

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/// \file
/// \ingroup tutorial_roofit
///  'ORGANIZATION AND SIMULTANEOUS FITS' RooFit tutorial macro #507
///
///    RooFit memory tracing debug tool
///
///
///
/// \macro_code
/// \author 07/2008 - Wouter Verkerke 


#ifndef __CINT__
#include "RooGlobalFunc.h"
#endif
#include "RooRealVar.h"
#include "RooDataSet.h"
#include "RooGaussian.h"
#include "RooConstVar.h"
#include "RooPolynomial.h"
#include "RooAddPdf.h"
#include "TCanvas.h"
#include "TAxis.h"
#include "RooPlot.h"
#include "RooTrace.h"
using namespace RooFit ;


void rf507_debugtools()
{
  // Activate RooFit memory tracing
  RooTrace::active(kTRUE) ;

  // Construct gauss(x,m,s)
  RooRealVar x("x","x",-10,10) ;
  RooRealVar m("m","m",0,-10,10) ;
  RooRealVar s("s","s",1,-10,10) ;
  RooGaussian gauss("g","g",x,m,s) ;

  // Show dump of all RooFit object in memory
  RooTrace::dump() ;

  // Activate verbose mode
  RooTrace::verbose(kTRUE) ;

  // Construct poly(x,p0)
  RooRealVar p0("p0","p0",0.01,0.,1.) ;
  RooPolynomial poly("p","p",x,p0) ;       

  // Put marker in trace list for future reference
  RooTrace::mark() ;

  // Construct model = f*gauss(x) + (1-f)*poly(x)
  RooRealVar f("f","f",0.5,0.,1.) ;
  RooAddPdf model("model","model",RooArgSet(gauss,poly),f) ;

  // Show object added to memory since marker
  RooTrace::printObjectCounts() ;

  // Since verbose mode is still on, you will see messages
  // pertaining to destructor calls of all RooFit objects
  // made in this macro
  //
  // A call to RooTrace::dump() at the end of this macro
  // should show that there a no RooFit object left in memory
}