RooTrace Class Reference

Deprecated

RooTrace is unused and untested, and its hooks are compiled out by default. It will be removed in ROOT 6.44. For memory debugging, please use general-purpose tools like AddressSanitizer or Valgrind instead.

Controls the memory tracing hooks in all RooFit objects. When tracing is active, a table of live RooFit objects is kept that can be queried at any time. In verbose mode, messages are printed in addition at the construction and destruction of each object.

Usage example:

void exampleRooTrace()
{
   using namespace RooFit;
 
   // Activate RooFit memory tracing
   RooTrace::active(true);
 
   // 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(true);
 
   // 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
}

Note

In the ROOT releases, the RooTrace is disabled at compile time and the example above will not print any objects. If you are an advanced developer who wants to use the RooTrace, you need to recompile ROOT after changing the TRACE_CREATE and TRACE_DESTROY macros in RooTrace.h to call the RooTrace functions:

#define TRACE_CREATE RooTrace::create(this);
#define TRACE_DESTROY RooTrace::destroy(this);

However, as ROOT is not build with this by default, the RooTrace is not tested and there is no guarantee that this works.

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The documentation for this class was generated from the following file:

• roofit/roofitcore/src/RooTrace.cxx