Gabriele Cosmo
119 lines
4.0 KiB
C++
119 lines
4.0 KiB
C++
//
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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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// INCL++ intra-nuclear cascade model
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// Alain Boudard, CEA-Saclay, France
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// Joseph Cugnon, University of Liege, Belgium
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// Jean-Christophe David, CEA-Saclay, France
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// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
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// Sylvie Leray, CEA-Saclay, France
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// Davide Mancusi, CEA-Saclay, France
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//
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#define INCLXX_IN_GEANT4_MODE 1
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#include "globals.hh"
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/** \file G4INCLAllocationPool.hh
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* \brief Singleton for recycling allocation of instances of a given class
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*
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* \date 2nd October 2014
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* \author Davide Mancusi
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*/
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#ifndef G4INCLALLOCATIONPOOL_HH
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#define G4INCLALLOCATIONPOOL_HH
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#if defined(INCL_USE_ALLOCATION_POOL) || defined(INCLXX_IN_GEANT4_MODE)
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#include <stack>
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#include <new>
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#include <cstddef>
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namespace G4INCL {
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template<typename T>
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class AllocationPool {
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public:
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static AllocationPool &getInstance() {
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if(!theInstance)
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theInstance = new AllocationPool<T>;
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return *theInstance;
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}
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T *getObject() {
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if(theStack.empty())
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return static_cast<T*>(::operator new(sizeof(T)));
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else {
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T *t = theStack.top();
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theStack.pop();
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return t;
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}
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}
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void recycleObject(T *t) {
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theStack.push(t);
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}
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void clear() {
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while(!theStack.empty()) { /* Loop checking, 10.07.2015, D.Mancusi */
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::operator delete(theStack.top());
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theStack.pop();
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}
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}
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protected:
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AllocationPool() {}
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virtual ~AllocationPool() {
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clear();
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}
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static G4ThreadLocal AllocationPool *theInstance;
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std::stack<T*> theStack;
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};
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template<typename T>
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G4ThreadLocal AllocationPool<T> *AllocationPool<T>::theInstance = 0;
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}
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#define INCL_DECLARE_ALLOCATION_POOL(T) \
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public: \
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static void *operator new(size_t /* s */) { \
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::G4INCL::AllocationPool<T> &allocator = ::G4INCL::AllocationPool<T>::getInstance(); \
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return allocator.getObject(); \
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} \
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static void operator delete(void *a, size_t /* s */) { \
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::G4INCL::AllocationPool<T> &allocator = ::G4INCL::AllocationPool<T>::getInstance(); \
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allocator.recycleObject(static_cast<T *>(a)); \
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}
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#else // defined(INCL_USE_ALLOCATION_POOL) || defined(INCLXX_IN_GEANT4_MODE)
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#define INCL_DECLARE_ALLOCATION_POOL(T)
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#endif
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#endif // G4INCLALLOCATIONPOOL_HH
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