G4XmlAnalysisManager.cc

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// Author: Ivana Hrivnacova, 18/06/2013  (ivana@ipno.in2p3.fr)

#include "G4XmlAnalysisManager.hh"
#include "G4XmlFileManager.hh"
#include "G4XmlNtupleManager.hh"
#include "G4AnalysisManagerState.hh"
#include "G4Threading.hh"
#include "G4AutoLock.hh"

// mutex in a file scope

namespace {
  //Mutex to lock master manager when merging H1 histograms 
  G4Mutex mergeH1Mutex = G4MUTEX_INITIALIZER;
  //Mutex to lock master manager when merging H1 histograms 
  G4Mutex mergeH2Mutex = G4MUTEX_INITIALIZER;
  //Mutex to lock master manager when merging H1 histograms 
  G4Mutex mergeH3Mutex = G4MUTEX_INITIALIZER;
  //Mutex to lock master manager when merging P1 profiles
  G4Mutex mergeP1Mutex = G4MUTEX_INITIALIZER;
  //Mutex to lock master manager when merging P2 profiles
  G4Mutex mergeP2Mutex = G4MUTEX_INITIALIZER;
}  

G4XmlAnalysisManager* G4XmlAnalysisManager::fgMasterInstance = nullptr;
G4ThreadLocal G4XmlAnalysisManager* G4XmlAnalysisManager::fgInstance = nullptr;

//_____________________________________________________________________________
G4XmlAnalysisManager* G4XmlAnalysisManager::Instance()
{
  if ( fgInstance == nullptr ) {
    G4bool isMaster = ! G4Threading::IsWorkerThread();
    fgInstance = new G4XmlAnalysisManager(isMaster);
  }
  
  return fgInstance;
}

//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::IsInstance()
{
  return ( fgInstance != 0 );
}    

//_____________________________________________________________________________
G4XmlAnalysisManager::G4XmlAnalysisManager(G4bool isMaster)
 : G4ToolsAnalysisManager("Xml", isMaster),
   fNtupleManager(nullptr),
   fFileManager(nullptr)
{
  if ( ( isMaster && fgMasterInstance ) || ( fgInstance ) ) {
    G4ExceptionDescription description;
    description 
      << "      " 
      << "G4XmlAnalysisManager already exists." 
      << "Cannot create another instance.";
    G4Exception("G4XmlAnalysisManager::G4XmlAnalysisManager",
                "Analysis_F001", FatalException, description);
  }              
  if ( isMaster ) fgMasterInstance = this;
  fgInstance = this;
  
  // Create managers
  fNtupleManager = new G4XmlNtupleManager(fState);
  fFileManager = std::make_shared<G4XmlFileManager>(fState);
  fNtupleManager->SetFileManager(fFileManager);
      // The managers will be deleted by the base class
  
  // Set managers to base class which takes then their ownership
  SetNtupleManager(fNtupleManager);
  SetFileManager(fFileManager);
}

//_____________________________________________________________________________
G4XmlAnalysisManager::~G4XmlAnalysisManager()
{  
  if ( fState.GetIsMaster() ) fgMasterInstance = nullptr;
  fgInstance = nullptr;
}

// 
// private methods
//

//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::WriteH1()
{
  auto h1Vector = fH1Manager->GetH1Vector();
  auto hnVector = fH1Manager->GetHnVector();

  if ( ! h1Vector.size() ) return true;

  auto result = true;

  if ( ! G4Threading::IsWorkerThread() )  {
    auto directoryName = fFileManager->GetHistoDirectoryName(); 
    result = WriteT(h1Vector, hnVector, directoryName, "h1");
  }  
  else {
    // The worker manager just adds its histograms to the master
    // This operation needs a lock
    G4AutoLock lH1(&mergeH1Mutex);
    fgMasterInstance->fH1Manager->AddH1Vector(h1Vector);
    lH1.unlock();
  }  
  
  return result;
}
 
//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::WriteH2()
{
  auto h2Vector = fH2Manager->GetH2Vector();
  auto hnVector = fH2Manager->GetHnVector();

  if ( ! h2Vector.size() ) return true;

  auto result = true;
  
  if ( ! G4Threading::IsWorkerThread() )  {
    auto directoryName = fFileManager->GetHistoDirectoryName(); 
    result = WriteT(h2Vector, hnVector, directoryName, "h2");
  }  
  else {
    // The worker manager just adds its histograms to the master
    // This operation needs a lock
    G4AutoLock lH2(&mergeH2Mutex);
    fgMasterInstance->fH2Manager->AddH2Vector(h2Vector);
    lH2.unlock();
  }  
  
  return result;
}

//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::WriteH3()
{
  auto h3Vector = fH3Manager->GetH3Vector();
  auto hnVector = fH3Manager->GetHnVector();

  if ( ! h3Vector.size() ) return true;

  auto result = true;
  
  if ( ! G4Threading::IsWorkerThread() )  {
    auto directoryName = fFileManager->GetHistoDirectoryName(); 
    result = WriteT(h3Vector, hnVector, directoryName, "h3");
  }  
  else {
    // The worker manager just adds its histograms to the master
    // This operation needs a lock
    G4AutoLock lH3(&mergeH3Mutex);
    fgMasterInstance->fH3Manager->AddH3Vector(h3Vector);
    lH3.unlock();
  }  
  
  return result;
}

//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::WriteP1()
{
  auto p1Vector = fP1Manager->GetP1Vector();
  auto hnVector = fP1Manager->GetHnVector();

  if ( ! p1Vector.size() ) return true;

  auto result = true;
  
  if ( ! G4Threading::IsWorkerThread() )  {
    auto directoryName = fFileManager->GetHistoDirectoryName(); 
    result = WriteT(p1Vector, hnVector, directoryName, "p1");
  }  
  else {
    // The worker manager just adds its profiles to the master
    // This operation needs a lock
    G4AutoLock lP1(&mergeP1Mutex);
    fgMasterInstance->fP1Manager->AddP1Vector(p1Vector);
    lP1.unlock();
  }  
  
  return result;
}
    
//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::WriteP2()
{
  auto p2Vector = fP2Manager->GetP2Vector();
  auto hnVector = fP2Manager->GetHnVector();

  if ( ! p2Vector.size() ) return true;

  auto result = true;
  
  if ( ! G4Threading::IsWorkerThread() )  {
    auto directoryName = fFileManager->GetHistoDirectoryName(); 
    result = WriteT(p2Vector, hnVector, directoryName, "p2");
  }  
  else {
    // The worker manager just adds its profiles to the master
    // This operation needs a lock
    G4AutoLock lP2(&mergeP2Mutex);
    fgMasterInstance->fP2Manager->AddP2Vector(p2Vector);
    lP2.unlock();
  }  
  
  return result;
}
    
//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::WriteNtuple()
{
  auto ntupleVector = fNtupleManager->GetNtupleDescriptionVector();

  for ( auto ntuple : ntupleVector ) {
    if ( ntuple->fNtuple ) ntuple->fNtuple->write_trailer();
  }
  
  return true;
}  

//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::CloseNtupleFiles()
{
  auto ntupleDescriptionVector = fNtupleManager->GetNtupleDescriptionVector();

  // Close ntuple files
  for ( auto ntupleDescription : ntupleDescriptionVector) {
    fFileManager->CloseNtupleFile((ntupleDescription));
  }
  
  return true;
}    


//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::Reset()
{
// Reset histograms and ntuple

  auto finalResult = true;

  auto result = G4ToolsAnalysisManager::Reset();
  finalResult = finalResult && result;
  
  result = fNtupleManager->Reset(true);
  finalResult = finalResult && result;
  
  return finalResult;
}  
 
// 
// protected methods
//

//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::OpenFileImpl(const G4String& fileName)
{
  auto finalResult = true;
  auto result = fFileManager->SetFileName(fileName);
  finalResult = finalResult && result;

#ifdef G4VERBOSE
  auto name = fFileManager->GetFullFileName();
  if ( fState.GetVerboseL4() ) {
    fState.GetVerboseL4()->Message("open", "analysis file", name);
  }  
#endif

  // Only lock file name in file manager
  result = fFileManager->OpenFile(fileName);
  finalResult = finalResult && result;

  // Create histograms file (on master)
  if ( fState.GetIsMaster() ) {
    result = fFileManager->CreateHnFile();
    finalResult = finalResult && result;
  }  

  // Create ntuples if they are booked
  // (The files will be created with creating ntuples)
  fNtupleManager->CreateNtuplesFromBooking();

#ifdef G4VERBOSE
  if ( fState.GetVerboseL1() ) 
    fState.GetVerboseL1()->Message("open", "analysis file", name, finalResult);
#endif
  
  return finalResult;
}  
  
//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::WriteImpl() 
{
  auto finalResult = true;

#ifdef G4VERBOSE
  auto name = fFileManager->GetFullFileName();
  if ( fState.GetVerboseL4() ) 
    fState.GetVerboseL4()->Message("write", "files", name);
#endif

  // ntuples 
  WriteNtuple();

  if ( ! fgMasterInstance && 
       ( ( ! fH1Manager->IsEmpty() ) || ( ! fH2Manager->IsEmpty() ) || 
         ( ! fH3Manager->IsEmpty() ) || ( ! fP1Manager->IsEmpty() ) ||
         ( ! fP2Manager->IsEmpty() ) ) ) {

    G4ExceptionDescription description;
    description 
      << "      " << "No master G4XmlAnalysisManager instance exists." 
      << G4endl 
      << "      " << "Histogram data will not be merged.";
      G4Exception("G4XmlAnalysisManager::Write()",
                "Analysis_W031", JustWarning, description);
                
    // Create Hn file per thread
    auto result = fFileManager->CreateHnFile();
    if ( ! result ) return false;       
  }

  // H1
  auto result = WriteH1();
  finalResult = finalResult && result;

  // H2
  result = WriteH2();
  finalResult = finalResult && result;

  // H3
  result = WriteH3();
  finalResult = finalResult && result;

  // P1
  result = WriteP1();
  finalResult = finalResult && result;

  // P2
  result = WriteP2();
  finalResult = finalResult && result;

  // Write ASCII if activated
  if ( IsAscii() ) {
    result = WriteAscii(fFileManager->GetFileName());
    finalResult = finalResult && result;
  }   

#ifdef G4VERBOSE
  if ( fState.GetVerboseL1() ) 
    fState.GetVerboseL1()
      ->Message("write", "file", fFileManager->GetFullFileName(), finalResult);
#endif

  return finalResult;
}

//_____________________________________________________________________________
G4bool G4XmlAnalysisManager::CloseFileImpl(G4bool reset)
{
  auto finalResult = true;

#ifdef G4VERBOSE
  if ( fState.GetVerboseL4() ) 
    fState.GetVerboseL4()->Message("close", "files", "");
#endif

  // Unlock file name only
  auto result = fFileManager->CloseFile();
  finalResult = finalResult && result;
  
  // Close Hn file
  result = fFileManager->CloseHnFile();  
  finalResult = finalResult && result;
  
  // Close ntuple files
  result = CloseNtupleFiles();
  finalResult = finalResult && result;

  // reset data
  if ( reset ) {
    result = Reset();
  } else {
    // ntuple must be reset 
    result = fNtupleManager->Reset(true);
  }
  if ( ! result ) {
      G4ExceptionDescription description;
      description << "      " << "Resetting data failed";
      G4Exception("G4XmlAnalysisManager::CloseFile()",
                "Analysis_W021", JustWarning, description);
  } 
  finalResult = finalResult && result;

  // delete files if empty
  // (ntuple files are created only if an ntuple is created)
  if ( fFileManager->GetHnFile().get() && 
       fH1Manager->IsEmpty() && fH2Manager->IsEmpty() && fH3Manager->IsEmpty() &&
       fP1Manager->IsEmpty() && fP2Manager->IsEmpty() ) {
    result = ! std::remove(fFileManager->GetFullFileName());
    //  std::remove returns 0 when success
    if ( ! result ) {
      G4ExceptionDescription description;
      description << "      " << "Removing file " 
                  << fFileManager->GetFullFileName() << " failed";
      G4Exception("G4XmlAnalysisManager::CloseFile()",
                "Analysis_W021", JustWarning, description);
    }            
    finalResult = finalResult && result;
#ifdef G4VERBOSE
    if ( fState.GetVerboseL1() ) 
      fState.GetVerboseL1()
        ->Message("delete", "empty file", fFileManager->GetFullFileName());
#endif
  }
  else {
#ifdef G4VERBOSE
    if ( fState.GetVerboseL2() ) 
      fState.GetVerboseL2()
        ->Message("close", "files", "");
#endif
  }

  return finalResult; 
}