G4EmDataRegistry.cc

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//---------------------------------------------------------------------------
//
// GEANT4 Class file
//
// Author:  V.Ivanchenko 18.04.2024
//
//----------------------------------------------------------------------------
 
#include "G4EmDataRegistry.hh"
#include "G4AutoLock.hh"
 
G4EmDataRegistry* G4EmDataRegistry::instance = nullptr;
 
namespace
{
  G4Mutex theEmData = G4MUTEX_INITIALIZER;
}
 
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G4EmDataRegistry* G4EmDataRegistry::Instance()
{
  if (instance == nullptr) {
    static G4EmDataRegistry manager;
    instance = &manager;
  }
  return instance;
}
 
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G4EmDataRegistry::G4EmDataRegistry()
{
  fDataHandlers.reserve(50);
}
 
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G4EmDataRegistry::~G4EmDataRegistry()
{}
 
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G4EmDataHandler*
G4EmDataRegistry::GetHandlerByName(const G4String& nam, std::size_t n)
{
  // handler already exist
  G4EmDataHandler* ptr = EmDataHandler(nam);
  if (nullptr != ptr) { return ptr; }
 
  // create a new handler
  G4AutoLock l(&theEmData);
  ptr = EmDataHandler(nam);
  if (nullptr == ptr) {
    ptr = new G4EmDataHandler(n, nam);
  }
  l.unlock();
  
  return ptr;
}
 
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void G4EmDataRegistry::Register(G4EmDataHandler* ptr)
{
  if (nullptr == ptr) { return; }
  for (auto const & p : fDataHandlers) {
    if (p == ptr) { return; }
  }
  fDataHandlers.push_back(ptr);
}
 
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G4EmDataHandler* G4EmDataRegistry::EmDataHandler(const G4String& nam)
{
  G4EmDataHandler* ptr = nullptr;
  if (fDataHandlers.empty()) { return ptr; }
  for (auto const & p : fDataHandlers) {
    if (p->GetName() == nam) {
      ptr = p;
      break;
    }
  }
  return ptr;
}
 
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