RooHelpers.h

Go to the documentation of this file.

// Author: Stephan Hageboeck, CERN  01/2019
 
/*****************************************************************************
 * RooFit
 * Authors:                                                                  *
 *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
 *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
 *                                                                           *
 * Copyright (c) 2000-2019, Regents of the University of California          *
 *                          and Stanford University. All rights reserved.    *
 *                                                                           *
 * Redistribution and use in source and binary forms,                        *
 * with or without modification, are permitted according to the terms        *
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
 *****************************************************************************/
 
#ifndef ROOFIT_ROOFITCORE_INC_ROOHELPERS_H_
#define ROOFIT_ROOFITCORE_INC_ROOHELPERS_H_
 
#include "RooMsgService.h"
 
#include <sstream>
 
namespace RooHelpers {
 
/// Switches the message service to verbose while the instance alive.
class MakeVerbose {
  public:
    MakeVerbose() {
      auto& msg = RooMsgService::instance();
      fOldKillBelow = msg.globalKillBelow();
      msg.setGlobalKillBelow(RooFit::DEBUG);
      fOldConf = msg.getStream(0);
      msg.getStream(0).minLevel= RooFit::DEBUG;
      msg.setStreamStatus(0, true);
    }
 
    ~MakeVerbose() {
      auto& msg = RooMsgService::instance();
      msg.setGlobalKillBelow(fOldKillBelow);
      msg.getStream(0) = fOldConf;
      msg.setStreamStatus(0, true);
    }
 
  private:
    RooFit::MsgLevel fOldKillBelow;
    RooMsgService::StreamConfig fOldConf;
};
 
 
/// Hijacks all messages with given level and topic (and optionally object name) while alive.
/// Use like ostringstream afterwards. Useful for unit tests and debugging.
class HijackMessageStream : public std::ostringstream {
  public:
    HijackMessageStream(RooFit::MsgLevel level, RooFit::MsgTopic topics, const char* objectName = nullptr);
 
    virtual ~HijackMessageStream();
 
  private:
    RooFit::MsgLevel _oldKillBelow;
    std::vector<RooMsgService::StreamConfig> _oldConf;
    Int_t _thisStream;
};
 
std::vector<std::string> tokenise(const std::string &str, const std::string &delims);
 
}
 
#endif /* ROOFIT_ROOFITCORE_INC_ROOHELPERS_H_ */