CloneService Namespace Reference

Functions
StatusCode	clone (const IService *parent, const std::string &childName, Service *&child)
	given a reference to a parent svc sets a reference to a cloned child

Function Documentation

clone()

StatusCode CloneService::clone	(	const IService *	parent,
		const std::string &	childName,
		Service *&	child )

given a reference to a parent svc sets a reference to a cloned child

given a pointer to a parent svc sets a reference to a cloned child

Definition at line 21 of file CloneService.cxx.

  {
    //check the parent pointer is valid
    const Service* parent = dynamic_cast<const Service*>(iParent);
    if ( !parent ) {
      throw GaudiException("parent " + iParent->name() + " is not a service!",
                           "CloneService", StatusCode::FAILURE);
      return StatusCode::FAILURE;
    }
 
    MsgStream mlog( parent->msgSvc(), "CloneService" );
    ISvcLocator* svcLoc = parent->serviceLocator();
 
    //Create the child unless it is already there. We cannot use the createIf`
    //feature of ISvcLocator because that tries to initialize the service immediately.
    if ( svcLoc->existsService(childName) ) {
      mlog << MSG::DEBUG
           << "Found service " << childName
           << endmsg;
    } else {
      // can we access the Service Manager interface?
      SmartIF<ISvcManager> svcMgr(svcLoc);
      CHECK_WITH_CONTEXT( svcMgr.isValid(), "CloneService" );
 
      // Create the service
      const std::string& parentType = System::typeinfoName(typeid(*parent));
      Gaudi::Utils::TypeNameString tn(childName, parentType);
 
      child = dynamic_cast<Service*>(svcMgr->createService(tn).get());
      if ( child ) {
        mlog << MSG::DEBUG
             << "Created service " << childName << " of type " << parentType
             << endmsg;
      } else {
        mlog << MSG::ERROR
             << "Failed to create " << childName << " of type " << parentType
             << endmsg;
        return StatusCode::FAILURE;
      }
    }
 
    //now copy parent's properties into child
    for (Gaudi::Details::PropertyBase* prop : parent->getProperties()) {
      if ( child->setProperty(*prop).isFailure() ) {
        mlog << MSG::ERROR
             << "Failed to set child property " << prop->name() << endmsg;
        return StatusCode::FAILURE;
      }
    }
 
    //finally put the service in the same state as the parent
    //FIXME should we handle the case in which the parent is RUNNING?
    if (Gaudi::StateMachine::INITIALIZED == parent->FSMState() &&
        Gaudi::StateMachine::CONFIGURED == child->FSMState())
      return child->sysInitialize(); 
    else {
      mlog << MSG::DEBUG 
           << "Did not initialize " <<  childName
           << endmsg;
      return StatusCode::SUCCESS;
    }
  }