G4UserWorkerThreadInitialization.cc

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//
// G4UserWorkerThreadInitialization implementation
//
// Authors: M.Asai, A.Dotti (SLAC), 16 September 2013
// --------------------------------------------------------------------
 
#include <sstream>
 
#include "G4UserWorkerThreadInitialization.hh"
#include "G4AutoLock.hh"
#include "G4MTRunManagerKernel.hh"
#include "G4UImanager.hh"
#include "G4VUserActionInitialization.hh"
#include "G4VUserPhysicsList.hh"
#include "G4WorkerRunManager.hh"
#include "G4WorkerThread.hh"
 
// Will need this for TPMalloc
//#ifdef G4MULTITHREADED
//#define TPMALLOCDEFINESTUB
//#include "tpmalloc/tpmallocstub.h"
//#endif
 
// --------------------------------------------------------------------
#ifdef G4MULTITHREADED
G4Thread* G4UserWorkerThreadInitialization::
CreateAndStartWorker(G4WorkerThread* wTC)
{
  // Note: this method is called by G4MTRunManager,
  // here we are still sequential.
  // Create a new thread/worker structure
  G4Thread* worker = new G4Thread;
  G4THREADCREATE(worker, &G4MTRunManagerKernel::StartThread, wTC);
  return worker;
}
#else
G4Thread* G4UserWorkerThreadInitialization::
CreateAndStartWorker(G4WorkerThread*)
{
  return new G4Thread;
}
#endif
 
// --------------------------------------------------------------------
#ifdef G4MULTITHREADED
void G4UserWorkerThreadInitialization::JoinWorker(G4Thread* aThread)
{
  G4THREADJOIN(*aThread);
}
#else  // Avoid compilation warning in sequential
void G4UserWorkerThreadInitialization::JoinWorker(G4Thread*)
{
}
#endif
 
// --------------------------------------------------------------------
G4UserWorkerThreadInitialization::G4UserWorkerThreadInitialization()
{
}
 
// --------------------------------------------------------------------
G4UserWorkerThreadInitialization::~G4UserWorkerThreadInitialization()
{
}
 
// --------------------------------------------------------------------
namespace
{
  G4Mutex rngCreateMutex = G4MUTEX_INITIALIZER;
}
 
// --------------------------------------------------------------------
void G4UserWorkerThreadInitialization::
SetupRNGEngine(const CLHEP::HepRandomEngine* aNewRNG) const
{
  G4AutoLock l(&rngCreateMutex);
  // No default available, let's create the instance of random stuff
  // A Call to this just forces the creation to defaults
  G4Random::getTheEngine();
  // Poor man's solution to check which RNG Engine is used in master thread
  CLHEP::HepRandomEngine* retRNG = nullptr;
 
  // Need to make these calls thread safe
  if(dynamic_cast<const CLHEP::HepJamesRandom*>(aNewRNG))
  {
    retRNG = new CLHEP::HepJamesRandom;
  }
  if(dynamic_cast<const CLHEP::MixMaxRng*>(aNewRNG))
  {
    retRNG = new CLHEP::MixMaxRng;
  }
  if(dynamic_cast<const CLHEP::RanecuEngine*>(aNewRNG))
  {
    retRNG = new CLHEP::RanecuEngine;
  }
  if(dynamic_cast<const CLHEP::RanluxppEngine*>(aNewRNG))
  {
    retRNG = new CLHEP::RanluxppEngine;
  }
  if(dynamic_cast<const CLHEP::Ranlux64Engine*>(aNewRNG))
  {
    const CLHEP::Ranlux64Engine* theRNG =
      dynamic_cast<const CLHEP::Ranlux64Engine*>(aNewRNG);
    retRNG = new CLHEP::Ranlux64Engine(123, theRNG->getLuxury());
  }
  if(dynamic_cast<const CLHEP::MTwistEngine*>(aNewRNG))
  {
    retRNG = new CLHEP::MTwistEngine;
  }
  if(dynamic_cast<const CLHEP::DualRand*>(aNewRNG))
  {
    retRNG = new CLHEP::DualRand;
  }
  if(dynamic_cast<const CLHEP::RanluxEngine*>(aNewRNG))
  {
    const CLHEP::RanluxEngine* theRNG =
      dynamic_cast<const CLHEP::RanluxEngine*>(aNewRNG);
    retRNG = new CLHEP::RanluxEngine(123, theRNG->getLuxury());
  }
  if(dynamic_cast<const CLHEP::RanshiEngine*>(aNewRNG))
  {
    retRNG = new CLHEP::RanshiEngine;
  }
 
  if(retRNG != nullptr)
  {
    G4Random::setTheEngine(retRNG);
  }
  else
  {
    // Does a new method, such as aNewRng->newEngine() exist to clone it ?
    G4ExceptionDescription msg;
    msg << " Unknown type of RNG Engine - " << G4endl
        << " Can cope only with HepJamesRandom, MixMaxRng, Ranecu, Ranlux64,"
        << " Ranlux++, MTwistEngine, DualRand, Ranlux or Ranshi." << G4endl
        << " Cannot clone this type of RNG engine, as required for this thread"
        << G4endl << " Aborting " << G4endl;
    G4Exception("G4UserWorkerThreadInitialization::SetupRNGEngine()",
                "Run0122", FatalException, msg);
  }
}
 
// --------------------------------------------------------------------
G4WorkerRunManager*
G4UserWorkerThreadInitialization::CreateWorkerRunManager() const
{
  return new G4WorkerRunManager();
}