Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/global/management/include/G4AutoDelete.hh

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
 11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 //
 26 // G4AutoDelete
 27 //
 28 // Description:
 29 //
 30 //   This function implements a simplified "garbage collection" mechanism
 31 //   for G4-MT model. Objects are registered when created on the heap and they
 32 //   will be deleted at the end of the program (like they would be if marked
 33 //   as "static").
 34 //
 35 // Limitation:
 36 //   The registered object, should not contain any G4ThreadLocal data member.
 37 //   Note that in general, if object is to be thread-private it is unnecessary
 38 //   to mark any data-member as G4ThreadLocal.
 39 //
 40 // Performance issues:
 41 //   This function uses G4ThreadLocalSingleton that on its own uses
 42 //   locks and mutexes. Thus its use should be limited to only when
 43 //   really necessary.
 44 //
 45 // Example:
 46 //   class G4SharedByThreads
 47 //   {
 48 //     void calledByThreads()
 49 //     {
 50 //       G4Something* anObject = new G4Something;
 51 //       G4AutoDelete::Register( anObject );
 52 //     }
 53 //   }
 54 
 55 // Author: A.Dotti (SLAC), 28 October 2013
 56 // --------------------------------------------------------------------
 57 #ifndef G4AUTODELETE_HH
 58 #define G4AUTODELETE_HH
 59 
 60 #include "G4ThreadLocalSingleton.hh"
 61 
 62 namespace G4AutoDelete
 63 {
 64   template <class T>
 65   void Register(T* inst)
 66   {
 67     static G4ThreadLocalSingleton<T> container;
 68     container.Register(inst);
 69   }
 70 }  // namespace G4AutoDelete
 71 
 72 #endif
 73