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Geant4/geometry/biasing/src/G4ImportanceAlgorithm.cc

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Diff markup

Differences between /geometry/biasing/src/G4ImportanceAlgorithm.cc (Version 11.3.0) and /geometry/biasing/src/G4ImportanceAlgorithm.cc (Version 10.6.p1)


  1 //                                                  1 //
  2 // *******************************************      2 // ********************************************************************
  3 // * License and Disclaimer                         3 // * License and Disclaimer                                           *
  4 // *                                                4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of th      5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
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 15 // * use.  Please see the license in the file      15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitatio     16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                               17 // *                                                                  *
 18 // * This  code  implementation is the result      18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboratio     19 // * technical work of the GEANT4 collaboration.                      *
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 23 // * acceptance of all terms of the Geant4 Sof     23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // *******************************************     24 // ********************************************************************
 25 //                                                 25 //
 26 // G4ImportanceAlgorithm implementation            26 // G4ImportanceAlgorithm implementation
 27 //                                                 27 //
 28 // Author: Michael Dressel (CERN), 2002            28 // Author: Michael Dressel (CERN), 2002
 29 // -------------------------------------------     29 // ----------------------------------------------------------------------
 30                                                    30 
 31 #include "G4Types.hh"                              31 #include "G4Types.hh"
                                                   >>  32 #include <sstream>
 32 #include "Randomize.hh"                            33 #include "Randomize.hh"
 33 #include "G4Threading.hh"                          34 #include "G4Threading.hh"
 34 #include "G4AutoLock.hh"                       << 
 35                                                    35 
 36 #include "G4ImportanceAlgorithm.hh"                36 #include "G4ImportanceAlgorithm.hh"
 37                                                    37 
 38 #include <sstream>                             <<  38 #ifdef G4MULTITHREADED
                                                   >>  39 G4Mutex G4ImportanceAlgorithm::ImportanceMutex = G4MUTEX_INITIALIZER;
                                                   >>  40 #endif
 39                                                    41 
 40 namespace                                      <<  42 G4ImportanceAlgorithm::G4ImportanceAlgorithm()
 41 {                                                  43 {
 42   G4Mutex ImportanceMutex = G4MUTEX_INITIALIZE << 
 43 }                                                  44 }
 44                                                    45 
 45 G4ImportanceAlgorithm::G4ImportanceAlgorithm() <<  46 G4ImportanceAlgorithm::~G4ImportanceAlgorithm()
 46                                                <<  47 {
 47 G4ImportanceAlgorithm::~G4ImportanceAlgorithm( <<  48 }
 48                                                    49 
 49 G4Nsplit_Weight                                    50 G4Nsplit_Weight
 50 G4ImportanceAlgorithm::Calculate(G4double ipre     51 G4ImportanceAlgorithm::Calculate(G4double ipre,
 51                                  G4double ipos     52                                  G4double ipost,
 52                                  G4double init     53                                  G4double init_w) const
 53 {                                                  54 {
 54   G4AutoLock l(&ImportanceMutex);              <<  55 
                                                   >>  56 #ifdef G4MULTITHREADED
                                                   >>  57   G4MUTEXLOCK(&G4ImportanceAlgorithm::ImportanceMutex);
                                                   >>  58 #endif
                                                   >>  59 
 55   G4Nsplit_Weight nw;                              60   G4Nsplit_Weight nw;
 56   if (ipost>0.)                                    61   if (ipost>0.)
 57   {                                                62   {
 58     if (!(ipre>0.))                                63     if (!(ipre>0.))
 59     {                                              64     {
 60       Error("Calculate() - ipre==0.");             65       Error("Calculate() - ipre==0.");
 61     }                                              66     }
 62     G4double ipre_over_ipost = ipre/ipost;         67     G4double ipre_over_ipost = ipre/ipost;
 63     if ((ipre_over_ipost<0.25 || ipre_over_ipo     68     if ((ipre_over_ipost<0.25 || ipre_over_ipost> 4) && !fWarned)
 64     {                                              69     {
 65       std::ostringstream os;                       70       std::ostringstream os;
 66       os << "Calculate() - ipre_over_ipost ! i     71       os << "Calculate() - ipre_over_ipost ! in [0.25, 4]." << G4endl
 67          << "ipre_over_ipost = " << ipre_over_     72          << "ipre_over_ipost = " << ipre_over_ipost << ".";
 68       Warning(os.str());                           73       Warning(os.str());
 69       fWarned = true;                              74       fWarned = true;
 70       if (ipre_over_ipost<=0)                      75       if (ipre_over_ipost<=0)
 71       {                                            76       {
 72         Error("Calculate() - ipre_over_ipost<=     77         Error("Calculate() - ipre_over_ipost<=0.");
 73       }                                            78       }
 74     }                                              79     }
 75     if (init_w<=0.)                                80     if (init_w<=0.)
 76     {                                              81     {
 77       Error("Calculate() - iniitweight<= 0. fo     82       Error("Calculate() - iniitweight<= 0. found!");
 78     }                                              83     }
 79                                                    84 
 80     // default geometrical splitting               85     // default geometrical splitting 
 81     // in integer mode                             86     // in integer mode 
 82     // for ipre_over_ipost <= 1                    87     // for ipre_over_ipost <= 1
 83     G4double inv = 1./ipre_over_ipost;             88     G4double inv = 1./ipre_over_ipost;
 84     nw.fN = static_cast<G4int>(inv);               89     nw.fN = static_cast<G4int>(inv);
 85     nw.fW = init_w * ipre_over_ipost;              90     nw.fW = init_w * ipre_over_ipost;
 86                                                    91     
 87     // geometrical splitting for double mode       92     // geometrical splitting for double mode
 88     if (ipre_over_ipost<1)                         93     if (ipre_over_ipost<1)
 89     {                                              94     {
 90       if ( static_cast<G4double>(nw.fN) != inv     95       if ( static_cast<G4double>(nw.fN) != inv)
 91       {                                            96       {
 92         // double mode                             97         // double mode
 93         // probability p for splitting into n+     98         // probability p for splitting into n+1 tracks
 94         G4double p = inv - nw.fN;                  99         G4double p = inv - nw.fN;
 95         // get a random number out of [0,1)       100         // get a random number out of [0,1)
 96         G4double r = G4UniformRand();             101         G4double r = G4UniformRand();
 97         if (r<p)                                  102         if (r<p)
 98         {                                         103         {
 99           ++nw.fN;                                104           ++nw.fN;
100         }                                         105         } 
101       }                                           106       }  
102     }                                             107     }
103     else if (ipre_over_ipost>1)   // russian r    108     else if (ipre_over_ipost>1)   // russian roulette
104     {                                             109     {
105       // probabiity for killing track             110       // probabiity for killing track
106       G4double p = 1-inv;                         111       G4double p = 1-inv;
107       // get a random number out of [0,1)         112       // get a random number out of [0,1)
108       G4double r = G4UniformRand();               113       G4double r = G4UniformRand();
109       if (r<p)                                    114       if (r<p)
110       {                                           115       {
111         // kill track                             116         // kill track
112         nw.fN = 0;                                117         nw.fN = 0;
113         nw.fW = 0;                                118         nw.fW = 0;
114       }                                           119       }
115       else                                        120       else
116       {                                           121       {
117         nw.fN = 1;                                122         nw.fN = 1;     
118       }                                           123       }
119     }                                             124     }
120   }                                               125   }
121   l.unlock();                                  << 126 #ifdef G4MULTITHREADED
122                                                << 127   G4MUTEXUNLOCK(&G4ImportanceAlgorithm::ImportanceMutex);
                                                   >> 128 #endif
123   return nw;                                      129   return nw;
124 }                                                 130 }
125                                                   131 
126 void G4ImportanceAlgorithm::Error(const G4Stri    132 void G4ImportanceAlgorithm::Error(const G4String& msg) const
127 {                                                 133 {
128   G4Exception("G4ImportanceAlgorithm::Error()"    134   G4Exception("G4ImportanceAlgorithm::Error()",
129               "GeomBias0002", FatalException,     135               "GeomBias0002", FatalException, msg);
130 }                                                 136 }
131                                                   137 
132 void G4ImportanceAlgorithm::Warning(const G4St    138 void G4ImportanceAlgorithm::Warning(const G4String& msg) const
133 {                                                 139 {
134   G4Exception("G4ImportanceAlgorithm::Warning(    140   G4Exception("G4ImportanceAlgorithm::Warning()",
135               "GeomBias1001", JustWarning, msg    141               "GeomBias1001", JustWarning, msg);
136 }                                                 142 }
137                                                   143