G4GeometryWorkspacePool.cc

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//
//
// $Id: G4GeometryWorkspacePool.cc 110271 2018-05-17 14:41:15Z gcosmo $
//
// 
// Class G4GeometryWorkspacePool - implementation
//
// ----------------------------------------------------------------------

#include "G4GeometryWorkspacePool.hh"
#include "G4GeometryWorkspace.hh"

#include "G4AutoLock.hh"

namespace
{
  G4Mutex singletonM = G4MUTEX_INITIALIZER;
}

G4GeometryWorkspace*& G4GeometryWorkspacePool::fMyWorkspace()
{
    G4ThreadLocalStatic G4GeometryWorkspace* _instance = nullptr;
    return _instance;
}

G4GeometryWorkspacePool* G4GeometryWorkspacePool::thePool=0;

// ----------------------------------------------------------------------
//
G4GeometryWorkspacePool* G4GeometryWorkspacePool::GetInstance()
{
  G4AutoLock l(&singletonM);
  if ( !thePool )  { thePool= new G4GeometryWorkspacePool(); }
  return thePool;
}

// ----------------------------------------------------------------------
// For use with MT and current G4WorkerThread -- which uses static methods
//
G4GeometryWorkspace* G4GeometryWorkspacePool::CreateWorkspace()
{
  G4GeometryWorkspace* geometryWrk=0;
  if( !fMyWorkspace() )
  {
    geometryWrk= new G4GeometryWorkspace();

    if( !geometryWrk )
    {
      G4Exception("GeometryWorspacePool::CreateWorkspace", "GeomVol003",
                  FatalException, "Failed to create workspace.");
    }
    else
    {
      fMyWorkspace()= geometryWrk;
    }
  }
  else
  {
    G4Exception("GeometryWorspacePool::CreateWorkspace", "GeomVol003",
                FatalException,
                "Cannot create workspace twice for the same thread.");
    geometryWrk= fMyWorkspace();
  }
  
  return geometryWrk;
}

// ----------------------------------------------------------------------
// Create it (as above) and use it
//
void G4GeometryWorkspacePool::CreateAndUseWorkspace()
{
  (this->CreateWorkspace())->UseWorkspace();
}

// ----------------------------------------------------------------------
// Reuse an existing workspace - or create a new one if needed.
//
G4GeometryWorkspace* G4GeometryWorkspacePool::FindOrCreateWorkspace()
{
  G4GeometryWorkspace* geometryWrk= fMyWorkspace();
  if( !geometryWrk )
  { 
    geometryWrk= this->CreateWorkspace(); 
  } 
  geometryWrk->UseWorkspace();
  
  fMyWorkspace()= geometryWrk; // assign it for use by this thread.
  return geometryWrk;
}

// ----------------------------------------------------------------------
//
void G4GeometryWorkspacePool::Recycle( G4GeometryWorkspace *geometryWrk )
{
  geometryWrk->ReleaseWorkspace(); 
  // if( fWarehouse ){
  // } else {
  delete geometryWrk;
  // }
}

// ----------------------------------------------------------------------
//
void G4GeometryWorkspacePool::CleanUpAndDestroyAllWorkspaces()
{
   if (fMyWorkspace())
   {
      fMyWorkspace()->DestroyWorkspace();
      delete fMyWorkspace();
      fMyWorkspace()=0;
   }
}

// ----------------------------------------------------------------------
//
G4GeometryWorkspacePool::G4GeometryWorkspacePool()
{
  // fWarehouse=0;
}

// ----------------------------------------------------------------------
//
G4GeometryWorkspacePool::~G4GeometryWorkspacePool()
{
}