Import Geant4 10.0.0 source tree
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Gabriele Cosmo
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//
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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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//--------------------------------------------------------------------
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//
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// G4BiasingProcessInterface
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//
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// Class Description:
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// A wrapper process making the interface between the tracking
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// and the G4VBiasingOperator objects attached to volumes.
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// If this process holds a physics process, it forwards
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// tracking calls to this process in volume where not biasing
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// occurs. In volumes with biasing (with a G4VBiasingOperator
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// attached) the process gets what to do messaging the biasing
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// operator :
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// - at the PostStepGPIL level, for getting an occurence biasing
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// operation. If such an operation is returned to the process
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// this operation will be messaged at several places.
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// - at the PostStepDoIt level, to get a possible final state
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// biasing operation
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// If the process does not hold a physics process, it is meant
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// as handling "non physics" biasing operations: pure splitting
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// or pure kiling for example (ie not brem splitting).
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//
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//--------------------------------------------------------------------
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// Initial version Sep. 2013 M. Verderi
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#ifndef G4BiasingProcessInterface_h
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#define G4BiasingProcessInterface_h
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#include "globals.hh"
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#include "G4VProcess.hh"
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#include "G4Cache.hh"
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class G4VBiasingInteractionLaw;
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class G4InteractionLawPhysical;
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class G4VBiasingOperator;
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class G4VBiasingOperation;
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class G4ParticleChangeForOccurenceBiasing;
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class G4ParticleChange;
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class G4ParticleChangeForNothing;
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class G4BiasingProcessInterface : public G4VProcess {
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public:
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// --------------------------------------------------------------------------------
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// -- constructor for dealing with biasing options not affecting physics processes:
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// --------------------------------------------------------------------------------
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G4BiasingProcessInterface( G4String name = "biasWrapper(0)" );
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// ---------------------------------------------------------------
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// -- constructor to transform the behaviour of a physics process:
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// ---------------------------------------------------------------
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// -- wrappedProcess pointer MUST NOT be null.
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G4BiasingProcessInterface(G4VProcess* wrappedProcess,
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G4bool wrappedIsAtRest, G4bool wrappedIsAlongStep, G4bool wrappedIsPostStep,
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G4String useThisName = "");
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~G4BiasingProcessInterface();
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// -- pointer of wrapped physics process:
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G4VProcess* GetWrappedProcess() const {return fWrappedProcess;}
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// ---------------------
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// -- Biasing interface:
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// ---------------------
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// -- Helper methods:
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// ------------------
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// -- Current step and previous step biasing operator, if any:
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G4VBiasingOperator* GetCurrentBiasingOperator() const {return fCurrentBiasingOperator; }
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G4VBiasingOperator* GetPreviousBiasingOperator() const {return fPreviousBiasingOperator; }
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// -- current and previous operation:
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G4VBiasingOperation* GetCurrentOccurenceBiasingOperation() const { return fOccurenceBiasingOperation; }
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G4VBiasingOperation* GetPreviousOccurenceBiasingOperation() const { return fPreviousOccurenceBiasingOperation; }
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G4VBiasingOperation* GetCurrentFinalStateBiasingOperation() const { return fFinalStateBiasingOperation; }
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G4VBiasingOperation* GetPreviousFinalStateBiasingOperation() const { return fPreviousFinalStateBiasingOperation; }
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G4VBiasingOperation* GetCurrentNonPhysicsBiasingOperation() const { return fNonPhysicsBiasingOperation; }
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G4VBiasingOperation* GetPreviousNonPhysicsBiasingOperation() const { return fPreviousNonPhysicsBiasingOperation; }
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// ------------------
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// -- Helper methods:
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// ------------------
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// ---- Tell is this process is first/last in the PostStep GPIL and DoIt lists.
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// ---- If physOnly is true, only wrapper for physics processes are considered,
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// ---- otherwise all G4BiasingProcessInterface processes of this particle are
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// ---- considered.
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// ---- These methods just return the corresponding flag values setup at
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// ---- initialization phase by the next four ones.
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// ---- Will not be updated if processes are activate/unactivated on the fly.
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// ---- Use next methods (less fast) instead in this case.
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G4bool GetIsFirstPostStepGPILInterface(G4bool physOnly = true) const;
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G4bool GetIsLastPostStepGPILInterface(G4bool physOnly = true) const;
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G4bool GetIsFirstPostStepDoItInterface(G4bool physOnly = true) const;
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G4bool GetIsLastPostStepDoItInterface(G4bool physOnly = true) const;
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// ---- Determine if the process is first/last in the PostStep GPIL and DoIt lists.
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G4bool IsFirstPostStepGPILInterface(G4bool physOnly = true) const;
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G4bool IsLastPostStepGPILInterface(G4bool physOnly = true) const;
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G4bool IsFirstPostStepDoItInterface(G4bool physOnly = true) const;
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G4bool IsLastPostStepDoItInterface(G4bool physOnly = true) const;
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// -- Information about wrapped process:
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G4bool GetWrappedProcessIsAtRest() const { return fWrappedProcessIsAtRest; }
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G4bool GetWrappedProcessIsAlong() const { return fWrappedProcessIsAlong; }
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G4bool GetWrappedProcessIsPost() const { return fWrappedProcessIsPost; }
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// -- Information methods:
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G4double GetPreviousStepSize() const { return fPreviousStepSize;}
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G4double GetCurrentMinimumStep() const { return fCurrentMinimumStep;}
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G4double GetProposedSafety() const { return fProposedSafety;}
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void SetProposedSafety(G4double sft) { fProposedSafety = sft;}
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// -- return the actual PostStep and AlongStep limits returned by the process to the tracking :
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G4double GetPostStepGPIL() const { return fBiasingPostStepGPIL; }
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G4double GetAlongStepGPIL() const { return fWrappedProcessAlongStepGPIL; }
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// --------------------------------------------------------------
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// -- G4VProcess interface --
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// --------------------------------------------------------------
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public:
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// -- Start/End tracking:
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void StartTracking(G4Track* track);
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void EndTracking();
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// -- PostStep methods:
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virtual G4double PostStepGetPhysicalInteractionLength(const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition);
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virtual G4VParticleChange* PostStepDoIt(const G4Track& track,
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const G4Step& step);
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// -- AlongStep methods:
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virtual G4double AlongStepGetPhysicalInteractionLength(const G4Track& track,
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G4double previousStepSize,
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G4double currentMinimumStep,
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G4double& proposedSafety,
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G4GPILSelection* selection);
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virtual G4VParticleChange* AlongStepDoIt(const G4Track& track,
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const G4Step& step);
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// -- AtRest methods
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virtual G4double AtRestGetPhysicalInteractionLength(const G4Track&,
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G4ForceCondition*);
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virtual G4VParticleChange* AtRestDoIt(const G4Track&,
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const G4Step&);
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virtual G4bool IsApplicable(const G4ParticleDefinition& pd);
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virtual void BuildPhysicsTable(const G4ParticleDefinition& pd);
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virtual void PreparePhysicsTable(const G4ParticleDefinition& pd);
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virtual G4bool StorePhysicsTable(const G4ParticleDefinition* pd,
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const G4String& s, G4bool f);
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virtual G4bool RetrievePhysicsTable(const G4ParticleDefinition* pd,
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const G4String& s, G4bool f);
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// --
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virtual void SetProcessManager(const G4ProcessManager*);
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virtual const G4ProcessManager* GetProcessManager();
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// --
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virtual void ResetNumberOfInteractionLengthLeft();
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// virtual void ClearNumberOfInteractionLengthLeft();
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// --
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// virtual void DumpInfo() const;
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virtual void SetMasterProcess(G4VProcess* masterP);
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virtual void BuildWorkerPhysicsTable(const G4ParticleDefinition& pd);
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virtual void PrepareWorkerPhysicsTable(const G4ParticleDefinition& pd);
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private:
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// ---- Setup first/last flags:
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void SetUpFirstLastFlags();
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void ResetForUnbiasedTracking();
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G4Track* fCurrentTrack;
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G4double fPreviousStepSize;
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G4double fCurrentMinimumStep;
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G4double fProposedSafety;
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G4VBiasingOperator* fCurrentBiasingOperator;
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G4VBiasingOperator* fPreviousBiasingOperator;
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G4VBiasingOperation* fOccurenceBiasingOperation;
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G4VBiasingOperation* fFinalStateBiasingOperation;
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G4VBiasingOperation* fNonPhysicsBiasingOperation;
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G4VBiasingOperation* fPreviousOccurenceBiasingOperation;
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G4VBiasingOperation* fPreviousFinalStateBiasingOperation;
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G4VBiasingOperation* fPreviousNonPhysicsBiasingOperation;
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G4bool fResetWrappedProcessInteractionLength;
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G4VProcess* fWrappedProcess;
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const G4bool fIsPhysicsBasedBiasing;
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const G4bool fWrappedProcessIsAtRest;
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const G4bool fWrappedProcessIsAlong;
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const G4bool fWrappedProcessIsPost;
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G4double fWrappedProcessPostStepGPIL;
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G4double fBiasingPostStepGPIL;
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G4double fWrappedProcessInteractionLength; // -- inverse of analog cross-section
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G4ForceCondition fWrappedProcessForceCondition;
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G4ForceCondition fBiasingForceCondition;
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G4double fWrappedProcessAlongStepGPIL;
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G4double fBiasingAlongStepGPIL;
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G4GPILSelection fWrappedProcessGPILSelection;
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G4GPILSelection fBiasingGPILSelection;
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const G4VBiasingInteractionLaw* fBiasingInteractionLaw;
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const G4VBiasingInteractionLaw* fPreviousBiasingInteractionLaw;
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G4InteractionLawPhysical* fPhysicalInteractionLaw;
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G4ParticleChangeForOccurenceBiasing* fOccurenceBiasingParticleChange;
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G4ParticleChange* fParticleChange; // -- to be changed with a light version for weight only
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G4ParticleChangeForNothing* fDummyParticleChange;
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G4bool fFirstLastFlags[8];
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G4int IdxFirstLast(G4int firstLast, G4int GPILDoIt, G4int physAll) const
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{
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// -- be careful : all arguments are *assumed* to be 0 or 1. No check
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// -- for that is provided. Should be of pure internal usage.
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return 4*firstLast + 2*GPILDoIt + physAll;
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}
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// -- TO DO : let some common operation be done only once, by the first
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// -- process in GPIL. Nothing done yet, may help to reduce overhead.
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// -- For example each process instance fetch for the current operator,
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// -- which could be done once, and with pointer shared.
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// -- Idea is to have a class containing the data members shared among
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// -- the instances.
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// -- Could make these shared data members shared only per particle type
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// -- (at present, with a single static, any instance of a process shares
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// -- its members with any other instance, regardless of particle type.)
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G4bool fIamFirstGPIL;
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// -- MUST be **thread local**:
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static G4Cache<G4bool> fResetInteractionLaws;
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static G4Cache<G4bool> fCommonStart;
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static G4Cache<G4bool> fCommonEnd;
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// -- Maintain lists of interfaces attached to a same particle (ie
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// -- to a same G4ProcessManager ).
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// -- This is used when biasing operations in different processes need to
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// -- cooperate (like for knowing the total cross-section for example).
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std::vector< G4BiasingProcessInterface* >* fCoInterfaces;
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// -- thread local:
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static G4MapCache< const G4ProcessManager*,
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std::vector< G4BiasingProcessInterface* > > fManagerInterfaceMap;
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const G4ProcessManager* fProcessManager;
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};
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#endif
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