rf507_debugtools.C

Go to the documentation of this file.

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


#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
}