Gabriele Cosmo
109 lines
3.7 KiB
C++
109 lines
3.7 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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//
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// $Id: $
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//
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//
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// ------------------------------------------------------------
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//
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// GEANT 4 class header file
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//
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// ---------------- G4PDefSplitter ----------------
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//
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// Utility template class for splitting RW data for thread-safety from
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// classes: G4ParticleDefinition, G4VDecayChannel.
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//
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// ------------------------------------------------------------
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// History:
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// 01.25.2009 Xin Dong: First implementation from automatic MT conversion.
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// ------------------------------------------------------------
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#ifndef G4PDEFSPLITTER_HH
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#define G4PDEFSPLITTER_HH
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#include <stdlib.h>
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#include "globals.hh"
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#include "pwdefs.hh"
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template <class T> // T is the private data from the object to be split
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class G4PDefSplitter
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{
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public:
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G4PDefSplitter() : totalobj(0) {}
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G4int CreateSubInstance()
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// Invoked by the master or work thread to create a new subinstance
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// whenever a new split class instance is created. For each worker
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// thread, ions are created dynamically.
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{
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totalobj++;
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if (totalobj > slavetotalspace) { NewSubInstances(); }
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return (totalobj - 1);
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}
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void NewSubInstances()
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// Invoked by each worker thread to grow the subinstance array and
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// initialize each new subinstance using a particular method defined
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// by the subclass.
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{
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if (slavetotalspace >= totalobj) { return; }
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G4int originaltotalspace = slavetotalspace;
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slavetotalspace = totalobj + 512;
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offset = (T *) realloc(offset, slavetotalspace * sizeof(T));
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if (offset == 0)
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{
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G4Exception("G4PDefSplitter::NewSubInstances()",
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"OutOfMemory", FatalException, "Cannot malloc space!");
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}
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for (G4int i = originaltotalspace; i < slavetotalspace; i++)
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{
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offset[i].initialize();
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}
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}
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void FreeSlave()
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// Invoked by all threads to free the subinstance array.
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{
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if (!offset) { return; }
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free(offset);
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offset = 0;
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}
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public:
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G4PART_DLL static G4ThreadLocal G4int slavetotalspace;
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G4PART_DLL static G4ThreadLocal T* offset;
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private:
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G4int totalobj;
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};
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#endif
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