DANARootErrorHandler.cc

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// $Id$
//
//    File: DANARootErrorHandler.cc
// Created: Mon Nov  9 16:09:14 EST 2009
// Creator: davidl (on Darwin Amelia.local 9.8.0 i386)
//

// This is based on info found here:
//
// http://root.cern.ch/root/roottalk/roottalk02/0514.html
//

#include <iostream>
using namespace std;

#include <TError.h>
#include "DANARootErrorHandler.h"


static int ROOT_ERROR_LEVEL_SUPRESS=-1;

//---------------------------------
// InitDANARootErrorHandler
//---------------------------------
void InitDANARootErrorHandler(int my_ROOT_ERROR_LEVEL_SUPRESS)
{
   ROOT_ERROR_LEVEL_SUPRESS = my_ROOT_ERROR_LEVEL_SUPRESS;

   // Register handler with ROOT
   SetErrorHandler(DANARootErrorHandler);
}
 
//---------------------------------
// DANARootErrorHandler
//---------------------------------
void DANARootErrorHandler(int lvl, bool abt, const char* loc, const char* msg)
{
   // Here is the entry point for the error handler
   if(lvl>ROOT_ERROR_LEVEL_SUPRESS || abt){
   
      // Check for certain messages we wish to ignore no matter what
      string sloc(loc);
      string smsg(msg);
      
      // The following is an error that occurs on occasion in the
      // tracking code while inverting a matrix. The condition is
      // checked for and handled there so printing of an error is
      // unnecessary (and even a bit misleading since it is not 
      // really an error condition)
      if(sloc == "TDecompLU::DecomposeLUCrout" && smsg == "matrix is singular") return;

      // The DRootGeom class generates several "errors" in when
      // loading the ROOT geometry such as from the following:
      //    TGeoVolumeMulti::CheckShapes
      //    TGeoEltu::GetMakeRuntimeShape
      //     ... etc...
      // These may real issues with the ROOT geometry, but it is
      // not used for core reconstruction at this time so the
      // errors are distracting.
      if(sloc.find("TGeo") == 0) return;

      // Use normal ROOT error handler 
      DefaultErrorHandler(lvl, abt, loc, msg);
   }
}