RandomNumbers.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#pragma once
 
#include <string>
#include <framework/core/RandomGenerator.h>
 
namespace Belle2 {
  class RandomNumbers {
 
  public:
    static void initialize();
 
    static void initialize(const std::string& seed);
 
    static bool isInitialized();
 
    static void initializeBeginRun();
 
    static void initializeEndRun();
 
    static void initializeEvent(bool force = false);
 
    static void useEventDependent();
 
    static RandomGenerator& getEventRandomGenerator() { return *s_evtRng; }
 
    static void barrier();
 
    static void setSeed(const std::string& seed);
 
    static std::string getSeed() {return s_initialSeed;};
 
    //--------------------------------------------------
    //                   Python API
    //--------------------------------------------------
 
    static void exposePythonAPI();
 
 
  private:
    static RandomGenerator* s_evtRng;
    static RandomGenerator* s_runRng;
    static std::string s_initialSeed;
    static int s_barrierOffset;
  };
 
} //end of namespace Belle2