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This commit is contained in:
Gabriele Cosmo
2025-12-05 08:54:02 +01:00
parent a499fb82e9
commit b4a16de652
6484 changed files with 232674 additions and 221097 deletions
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source/geometry/magneticfield/include/G4QSSubstepStruct.hh
+29 -46
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@@ -23,12 +23,12 @@
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
// Structs used by G4QSStepper
//
// Author: Mattias Portnoy (Univ. Buenos Aires) - 2024
// Structs used by G4QSStepper.
// Author: Mattias Portnoy (Univ. Buenos Aires), 2024
// --------------------------------------------------------------------
#ifndef G4QSS_SUBSTEPSTRUCT_HH
#define G4QSS_SUBSTEPSTRUCT_HH 1
#define G4QSS_SUBSTEPSTRUCT_HH
#include "G4FieldTrack.hh"
#include "G4MagIntegratorStepper.hh"
@@ -38,8 +38,14 @@
#include <cmath>
constexpr G4int MAX_QSS_ORDER=3;
constexpr G4int NUMBER_OF_VARIABLES_QSS = 6;
typedef G4double QSStateVector[6];
/**
* @brief Structs used by G4QSStepper.
*/
struct Substep
{
QSStateVector state_x[MAX_QSS_ORDER+1];
@@ -47,61 +53,38 @@ struct Substep
QSStateVector state_tx;
QSStateVector state_tq;
QSStateVector sync_t;
G4double t;
G4double t{0.0};
// simple id method so that substeps can have different orders in same step
G4int extrapolation_method;
G4double b_field[3];
G4int extrapolation_method =0; // To be overwritten in run (expect: 1,2 or 3)
G4double b_field[3] = {0.0, 0.0, 0.0 };
inline Substep();
};
// --------------------------------------------------------------------------------
struct Substeps
{
G4int _arrlength = 30;
Substep* _substeps = static_cast<Substep *>(malloc((_arrlength) * sizeof(Substep)));
Substep* _substeps = nullptr;
G4int current_substep_index = -1;
// Mimics the functionality of GNU method reallocarray
void* safe_reallocarray(void* ptr, size_t numMembers, size_t size)
{
if (size != 0 && numMembers > std::numeric_limits<size_t>::max() / size)
{
return nullptr;
}
return realloc(ptr, numMembers * size);
}
Substeps();
~Substeps();
/** Mimics the functionality of GNU method reallocarray. */
void* safe_reallocarray(void* ptr, size_t numMembers, size_t size);
inline void resize()
{
_arrlength = fmax(_arrlength*2, 1500);
_substeps = static_cast<Substep *>(safe_reallocarray(_substeps, _arrlength, sizeof(Substep)));
if( _substeps == nullptr )
{
G4ExceptionDescription ermsg;
ermsg << "QSS2: Size of state exceed available memory : number of elemets = " << _arrlength
<< " size of each element= " << sizeof(Substep) << G4endl;
G4Exception( "G4QSSubstepStruct::resize", "GeomField0008", FatalException, ermsg );
}
}
inline void resize();
inline Substep* create_susbtep()
{
current_substep_index++;
inline Substep* create_substep();
if (unlikely( current_substep_index >= _arrlength ))
{
resize();
}
return &(_substeps[current_substep_index]);
}
inline void save_substep(Substep* substep)
{
memcpy(create_susbtep(), substep, sizeof(Substep));
}
inline void save_substep(Substep* substep);
inline void reset()
{
current_substep_index = -1;
}
inline void reset();
};
#include "G4QSSubstepStruct.icc"
#endif