G4MTRunManagerKernel.cc

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#include "G4MTRunManagerKernel.hh"
#include "G4RegionStore.hh"
#include "G4StateManager.hh"
#include "G4AutoLock.hh"

std::vector<G4WorkerRunManager*>* G4MTRunManagerKernel::workerRMvector = 0;

namespace {
 G4Mutex workerRMMutex = G4MUTEX_INITIALIZER;
}

G4MTRunManagerKernel::G4MTRunManagerKernel() : G4RunManagerKernel(masterRMK)
{
    //This version of the constructor should never be called in sequential mode!
#ifndef G4MULTITHREADED
    G4ExceptionDescription msg;
    msg<<"Geant4 code is compiled without multi-threading support (-DG4MULTITHREADED is set to off).";
    msg<<" This type of RunManager can only be used in mult-threaded applications.";
    G4Exception("G4RunManagerKernel::G4RunManagerKernel()","Run0109",FatalException,msg);
#endif
    G4AutoLock l(&workerRMMutex);
    if(!workerRMvector) workerRMvector = new std::vector<G4WorkerRunManager*>;
    l.unlock();
    //Set flag that a MT-type kernel has been instantiated
    G4Threading::SetMultithreadedApplication(true);
}

G4MTRunManagerKernel::~G4MTRunManagerKernel()
{
  G4AutoLock l(&workerRMMutex);
    if(workerRMvector)
    {
      if(workerRMvector->size()>0)
      {
        G4ExceptionDescription msg;
        msg<<"G4MTRunManagerKernel is to be deleted while "
           <<workerRMvector->size()<<" G4WorkerRunManager are still alive.";
        G4Exception("G4RunManagerKernel::~G4RunManagerKernel()",
                    "Run10035",FatalException,msg);
      }
      delete workerRMvector;
      workerRMvector = 0;
    }  
}

void G4MTRunManagerKernel::SetupShadowProcess() const
{
    //Behavior is the same as base class (sequential mode)
    //ShadowProcess pointer == process poitner
    G4RunManagerKernel::SetupShadowProcess();
}

#include "G4WorkerRunManager.hh"
#include "G4UserWorkerInitialization.hh"
#include "G4UserWorkerThreadInitialization.hh"
#include "G4VUserActionInitialization.hh"
#include "G4WorkerThread.hh"
#include "G4UImanager.hh"
#include "G4LogicalVolume.hh"
#include "G4VPhysicalVolume.hh"
#include "G4PVReplica.hh"
#include "G4Region.hh"
#include "G4Material.hh"
#include "G4PhysicsVector.hh"
#include "G4VDecayChannel.hh"
#include "G4PhysicalVolumeStore.hh"
#include "G4MaterialTable.hh"
#include "G4PolyconeSide.hh"
#include "G4PolyhedraSide.hh"
#include "G4PVParameterised.hh"
#include "G4VUserPhysicsList.hh"
#include "G4VPhysicsConstructor.hh"
#include "G4VModularPhysicsList.hh"

G4ThreadLocal G4WorkerThread* G4MTRunManagerKernel::wThreadContext = 0;
G4WorkerThread* G4MTRunManagerKernel::GetWorkerThread() 
{ return wThreadContext; }

void* G4MTRunManagerKernel::StartThread(void* context)
{
  // Here is not sequential anymore and G4UserWorkerThreadInitialization is
  // a shared user initialization class
  // This means this method cannot use data memebers of G4RunManagerKernel
  // unless they are invariant ("read-only") and can be safely shared.
  //  All the rest that is not invariant should be incapsualted into
  //  the context (or, as for wThreadContext be G4ThreadLocal)
//#ifdef G4MULTITHREADED
//    turnontpmalloc();
//#endif
  G4Threading::WorkerThreadJoinsPool();
  wThreadContext = static_cast<G4WorkerThread*>(context);  
  G4MTRunManager* masterRM = G4MTRunManager::GetMasterRunManager();

    
  //============================
  //Step-0: Thread ID
  //============================
  //Initliazie per-thread stream-output
  //The following line is needed before we actually do IO initialization
  //becasue the constructor of UI manager resets the IO destination.
  G4int thisID = wThreadContext->GetThreadId();
  G4Threading::G4SetThreadId(thisID);
  G4UImanager::GetUIpointer()->SetUpForAThread(thisID);

  //============================
  //Optimization: optional
  //============================
  //Enforce thread affinity if requested
  wThreadContext->SetPinAffinity(masterRM->GetPinAffinity());

  //============================
  //Step-1: Random number engine
  //============================
  //RNG Engine needs to be initialized by "cloning" the master one.
  const CLHEP::HepRandomEngine* masterEngine = masterRM->getMasterRandomEngine();
  masterRM->GetUserWorkerThreadInitialization()->SetupRNGEngine(masterEngine);

  //============================
  //Step-2: Initialize worker thread
  //============================
  if(masterRM->GetUserWorkerInitialization())
  { masterRM->GetUserWorkerInitialization()->WorkerInitialize(); }
  if(masterRM->GetUserActionInitialization())
  {
      G4VSteppingVerbose* sv = masterRM->GetUserActionInitialization()->InitializeSteppingVerbose();
      if ( sv ) { G4VSteppingVerbose::SetInstance(sv); }
  }
  //Now initialize worker part of shared objects (geometry/physics)
  wThreadContext->BuildGeometryAndPhysicsVector();
  G4WorkerRunManager* wrm
        = masterRM->GetUserWorkerThreadInitialization()->CreateWorkerRunManager();
  wrm->SetWorkerThread(wThreadContext);
  G4AutoLock wrmm(&workerRMMutex);
  workerRMvector->push_back(wrm);
  wrmm.unlock();

  //================================
  //Step-3: Setup worker run manager
  //================================
  // Set the detector and physics list to the worker thread. Share with master
  const G4VUserDetectorConstruction* detector = masterRM->GetUserDetectorConstruction();
  wrm->G4RunManager::SetUserInitialization(const_cast<G4VUserDetectorConstruction*>(detector));
  const G4VUserPhysicsList* physicslist = masterRM->GetUserPhysicsList();
  wrm->SetUserInitialization(const_cast<G4VUserPhysicsList*>(physicslist));

  //================================
  //Step-4: Initialize worker run manager
  //================================
  if(masterRM->GetUserActionInitialization())
  { masterRM->GetNonConstUserActionInitialization()->Build(); }
  if(masterRM->GetUserWorkerInitialization())
  { masterRM->GetUserWorkerInitialization()->WorkerStart(); }
  wrm->Initialize();

  //================================
  //Step5: Loop over requests from the master thread 
  //================================
  //This function should enter a loop processing new runs and actions
  //requests from master. It should block until thread is ready
  //to terminate
  wrm->DoWork();

  //===============================
  //Step-6: Terminate worker thread
  //===============================
  if(masterRM->GetUserWorkerInitialization())
  { masterRM->GetUserWorkerInitialization()->WorkerStop(); }

  wrmm.lock();
  std::vector<G4WorkerRunManager*>::iterator itrWrm = workerRMvector->begin();
  for(;itrWrm!=workerRMvector->end();itrWrm++)
  {
    if((*itrWrm)==wrm)
    {
      workerRMvector->erase(itrWrm);
      break;
    }
  }
  wrmm.unlock();
  delete wrm;

  //===============================
  //Step-7: Cleanup split classes
  //===============================
  wThreadContext->DestroyGeometryAndPhysicsVector();
  wThreadContext = 0;

  G4Threading::WorkerThreadLeavesPool();
  return static_cast<void*>(0);
}

#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleTableIterator.hh"
#include "G4DecayTable.hh"
#include "G4VDecayChannel.hh"

void G4MTRunManagerKernel::SetUpDecayChannels()
{
  G4ParticleTable::G4PTblDicIterator* pItr
    = G4ParticleTable::GetParticleTable()->GetIterator();
  pItr->reset();
  while((*pItr)())
  {
    G4DecayTable* dt = pItr->value()->GetDecayTable();
    if(dt)
    {
      G4int nCh = dt->entries();
      for(G4int i=0;i<nCh;i++)
      { dt->GetDecayChannel(i)->GetDaughter(0); }
    }
  }
}

void G4MTRunManagerKernel::BroadcastAbortRun(G4bool softAbort)
{
  G4AutoLock wrmm(&workerRMMutex);
  std::vector<G4WorkerRunManager*>::iterator itr = workerRMvector->begin();
  for(;itr!=workerRMvector->end();itr++)
  { (*itr)->AbortRun(softAbort); }
}