Gabriele Cosmo
131 lines
4.5 KiB
C++
131 lines
4.5 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// Helper class for RNG Engine seeds.
|
|
// Used in MT builds to guarantee reproducibility.
|
|
// The function of this class is to return a RNG Engine seed
|
|
// given its index. It is a simple templated container that
|
|
// Allows to add seeds (AddOneSeed) and retrieve a seed (GetSeed)
|
|
// by index.
|
|
//
|
|
// The normal use is with G4RNGHelper where each element of th econtainer
|
|
// represents a seed. To enforce strong-reproducibility the variant with
|
|
// the RNG Engine status file names is avilable
|
|
|
|
#ifndef G4RNGHELPER_HH
|
|
#define G4RNGHELPER_HH
|
|
|
|
#include <vector>
|
|
#include <queue>
|
|
#include "globals.hh"
|
|
|
|
template <class T>
|
|
class G4TemplateRNGHelper
|
|
{
|
|
public:
|
|
// The container is modeled as a (shared) singleton
|
|
static G4TemplateRNGHelper<T>* GetInstance();
|
|
static G4TemplateRNGHelper<T>* GetInstanceIfExist();
|
|
typedef std::vector<T> SeedsQueue;
|
|
typedef typename SeedsQueue::size_type SeedsQueueSize_type;
|
|
|
|
virtual ~G4TemplateRNGHelper();
|
|
|
|
//Returns seed given id
|
|
virtual const T GetSeed(const G4int& sdId )
|
|
{
|
|
G4int seedId = sdId - 2*offset;
|
|
if ( seedId < static_cast<G4int>(seeds.size()) )
|
|
{
|
|
T& seed = seeds[seedId];
|
|
return seed;
|
|
}
|
|
G4ExceptionDescription msg;
|
|
msg << "No seed number "<<seedId<<"("<<seeds.size()<<" available)\n"
|
|
<< " Original seed number "<<sdId<<" filled so far "<<offset;
|
|
G4Exception("G4RNGHelper::GetSeed","Run0115", FatalException,msg);
|
|
return T();
|
|
}
|
|
|
|
//Adds one seed to the collection
|
|
void AddOneSeed( const T& seed ) { seeds.push_back(seed); }
|
|
|
|
//Fills N primary seed pairs
|
|
void Fill(G4double* dbl,G4int nev,G4int nev_tot,G4int nrpe)
|
|
{
|
|
seeds.clear();
|
|
for(G4int i=0;i<nrpe*nev;i++)
|
|
{ seeds.push_back((G4long)(100000000L*dbl[i])); }
|
|
offset = 0;
|
|
nev_filled = nev;
|
|
nev_total = nev_tot;
|
|
nRandParEvent = nrpe;
|
|
}
|
|
|
|
void Refill(G4double* dbl, G4int nev)
|
|
{
|
|
if(nev==0) return;
|
|
seeds.clear();
|
|
for(G4int i=0;i<nRandParEvent*nev;i++)
|
|
{ seeds.push_back((G4long)(100000000L*dbl[i])); }
|
|
offset += nev_filled;
|
|
nev_filled = nev;
|
|
}
|
|
|
|
//Number of available seeds
|
|
const SeedsQueueSize_type GetNumberSeeds() const { return seeds.size(); }
|
|
|
|
//Empty the seeds container
|
|
virtual void Clear() { seeds.clear(); }
|
|
|
|
protected:
|
|
SeedsQueue seeds;
|
|
// Note: following numbers are number of events.
|
|
// seeds are generated for nRandParEvent times n_event
|
|
G4int offset;
|
|
G4int nev_filled;
|
|
G4int nev_total;
|
|
G4int nRandParEvent;
|
|
|
|
private:
|
|
G4TemplateRNGHelper()
|
|
{
|
|
offset=0;
|
|
nev_filled=0;
|
|
nev_total=0;
|
|
nRandParEvent=0;
|
|
}
|
|
|
|
private:
|
|
static G4TemplateRNGHelper<T>* instance;
|
|
};
|
|
|
|
typedef G4TemplateRNGHelper<G4long> G4RNGHelper;
|
|
typedef G4TemplateRNGHelper<G4String> G4StringRNGHelper;
|
|
typedef std::queue<G4long> G4SeedsQueue;
|
|
|
|
#endif
|