Gabriele Cosmo
111 lines
4.0 KiB
Plaintext
111 lines
4.0 KiB
Plaintext
//
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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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// Structs used by G4QSStepper
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//
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// Author: Mattias Portnoy (Univ. Buenos Aires), 2024
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// --------------------------------------------------------------------
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inline Substep::Substep()
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{
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for (G4int i = 1; i < MAX_QSS_ORDER; ++i)
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{
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std::fill_n(state_x[i], NUMBER_OF_VARIABLES_QSS, 0.0);
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std::fill_n(state_q[i], NUMBER_OF_VARIABLES_QSS, 0.0);
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}
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std::fill_n(state_x[MAX_QSS_ORDER], NUMBER_OF_VARIABLES_QSS, 0.0);
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std::fill_n(state_tx, NUMBER_OF_VARIABLES_QSS, 0.0);
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std::fill_n(state_tq, NUMBER_OF_VARIABLES_QSS, 0.0);
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}
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// ----------------------------------------------------------------------------
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inline Substeps::Substeps()
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{
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_substeps = static_cast<Substep *>(malloc((_arrlength) * sizeof(Substep)));
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}
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// ----------------------------------------------------------------------------
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inline Substeps::~Substeps()
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{
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free(_substeps);
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}
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// ----------------------------------------------------------------------------
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// Mimics the functionality of GNU method reallocarray
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inline void* Substeps::safe_reallocarray(void* ptr, size_t numMembers, size_t size)
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{
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if (size != 0 && numMembers > std::numeric_limits<size_t>::max() / size)
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{
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return nullptr;
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}
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return realloc(ptr, numMembers * size);
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}
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// ----------------------------------------------------------------------------
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inline void Substeps::resize()
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{
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_arrlength = std::fmax(_arrlength*2, 1500);
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_substeps = static_cast<Substep *>(safe_reallocarray(_substeps, _arrlength, sizeof(Substep)));
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if( _substeps == nullptr )
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{
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G4ExceptionDescription ermsg;
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ermsg << "QSS2: Size of state exceed available memory : number of elemets = " << _arrlength
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<< " size of each element= " << sizeof(Substep) << G4endl;
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G4Exception( "G4QSSubstepStruct::resize", "GeomField0008", FatalException, ermsg );
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}
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}
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// ----------------------------------------------------------------------------
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inline Substep* Substeps::create_substep()
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{
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current_substep_index++;
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if (unlikely( current_substep_index >= _arrlength ))
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{
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resize();
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}
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return &(_substeps[current_substep_index]);
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}
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// ----------------------------------------------------------------------------
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inline void Substeps::save_substep(Substep* substep)
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{
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memcpy(create_substep(), substep, sizeof(Substep));
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}
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// ----------------------------------------------------------------------------
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inline void Substeps::reset()
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{
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current_substep_index = -1;
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}
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