Gabriele Cosmo
171 lines
6.3 KiB
C++
171 lines
6.3 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id:$
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//
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// Class G4MTHepRandom
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//
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// Modified version with MT extensions
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// of corresponding CLHEP class HepRandom
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// --------------------------------------------------------------------
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#ifndef G4MTHepRandom_h
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#define G4MTHepRandom_h 1
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#include <CLHEP/Random/RandomEngine.h>
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#include <CLHEP/Random/RandExponential.h>
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#include <CLHEP/Random/RandFlat.h>
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#include <CLHEP/Random/RandBit.h>
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#include <CLHEP/Random/RandGamma.h>
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#include <CLHEP/Random/RandGaussQ.h>
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#include <CLHEP/Random/RandGeneral.h>
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#include "tls.hh"
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#include "G4Types.hh"
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class G4MTHepRandom
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{
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public:
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G4MTHepRandom();
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G4MTHepRandom(G4long seed);
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// Contructors with and without a seed using the default engine
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// (JamesRandom).
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G4MTHepRandom(CLHEP::HepRandomEngine & algorithm);
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G4MTHepRandom(CLHEP::HepRandomEngine * algorithm);
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// Constructor taking an alternative engine as argument. If a pointer is
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// given the corresponding object will be deleted by the HepRandom
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// destructor.
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virtual ~G4MTHepRandom();
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// Destructor
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G4double flat();
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// Returns the flat value ( interval ]0...1[ ).
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void flatArray(const G4int size, G4double* vect);
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// Fills "vect" array of flat random values, given the size.
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inline G4double flat (CLHEP::HepRandomEngine* theNewEngine);
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// Returns a flat value, given a defined Random Engine.
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inline void flatArray(CLHEP::HepRandomEngine* theNewEngine,
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const G4int size, G4double* vect);
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// Fills "vect" array of flat random values, given the size
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// and a defined Random Engine.
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virtual G4double operator()();
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// To get a flat random number using the operator ().
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virtual std::ostream & put ( std::ostream & os ) const;
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virtual std::istream & get ( std::istream & is );
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// Save and restore to/from streams
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// --------------------------------------------------
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// Static member functions using the static generator
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// --------------------------------------------------
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static void setTheSeed(G4long seed, G4int lux=3);
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// (Re)Initializes the generator with a seed.
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static G4long getTheSeed();
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// Gets the current seed of the current generator.
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static void setTheSeeds(const G4long* seeds, G4int aux=-1);
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// (Re)Initializes the generator with a zero terminated list of seeds.
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static const G4long* getTheSeeds();
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// Gets the current array of seeds of the current generator.
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static void getTheTableSeeds (G4long* seeds, G4int index);
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// Gets the array of seeds in the static seedTable at "index" position.
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static G4MTHepRandom * getTheGenerator();
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// Return the current static generator.
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static void setTheEngine (CLHEP::HepRandomEngine* theNewEngine);
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// To set the underlying algorithm object.
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static CLHEP::HepRandomEngine * getTheEngine();
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// Returns a pointer to the underlying algorithm object.
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static void saveEngineStatus( const char filename[] = "Config.conf" );
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// Saves to file the current status of the current engine.
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static void restoreEngineStatus( const char filename[] = "Config.conf" );
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// Restores a saved status (if any) for the current engine.
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static std::ostream& saveFullState ( std::ostream & os );
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// Saves to stream the state of the engine and cached data.
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static std::istream& restoreFullState ( std::istream & is );
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// Restores from stream the state of the engine and cached data.
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static std::ostream& saveDistState ( std::ostream & os ) {return os;}
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// Saves to stream the state of the cached data.
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static std::istream& restoreDistState ( std::istream & is ) {return is;}
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// Restores from stream the state of the cached data.
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static std::ostream& saveStaticRandomStates ( std::ostream & os );
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// Saves to stream the engine and cached data for all distributions.
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static std::istream& restoreStaticRandomStates ( std::istream & is );
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// Restores from stream the engine and cached data for all distributions.
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static void showEngineStatus();
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// Dumps the current engine status on screen.
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static G4int createInstance();
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// used to initialise HepRandom::isActive and instantiate singleton
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static G4int createInstanceOnce();
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// used to initialise HepRandom::isActive and instantiate singleton
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private: // -------- Data members ---------
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static G4ThreadLocal CLHEP::HepRandomEngine * theEngine;
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// The corresponding algorithm.
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static G4ThreadLocal G4MTHepRandom * theGenerator;
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// The common shared static generator
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static G4ThreadLocal G4int isActive;
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// Flag notifying singleton instance
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G4bool deleteEngine;
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// True if the engine should be deleted on destruction.
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};
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std::ostream & operator<< (std::ostream & os, const G4MTHepRandom & dist);
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std::istream & operator>> (std::istream & is, G4MTHepRandom & dist);
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#include "G4MTHepRandom.icc"
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#endif
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