UpdaterServices Class Reference

Class to update the simulation components' state during a simulation. More...

#include <updaterservices.h>

Inheritance diagram for UpdaterServices:

Collaboration diagram for UpdaterServices:

Public Member Functions
	UpdaterServices ()
virtual	~UpdaterServices ()
virtual bool	init ()
virtual void	notify ()
virtual void	notify (unsigned int generation)
	The generation time is passed to the updaters. More...
virtual void	load (SimComponent *sc)
	Loads the updaters in case a component's parameter has temporal arguments. More...
virtual void	attach (Handler *H)
	Attach the updater to the stack. More...
virtual void	reset ()
	Clears the containers. More...
void	update_params (unsigned int generation)
	Calls the parameters updating procedure. More...
void	update_components (unsigned int generation)
	Update the components using the functions stored in the updaters. More...
bool	hasTemporals ()
	Checks if any updater has been uploaded. More...
Public Member Functions inherited from Service
	Service ()
virtual	~Service ()
virtual bool	init ()=0
	Inits internals. More...
virtual void	notify ()=0
	Notifies all observers to update their state. More...
virtual void	load (SimComponent *sc)=0
	Interface used by a simulation component to load its obervers onto a service provider. More...
virtual void	attach (Handler *h)=0
	Adds an observer to the list. More...
virtual void	reset ()=0
	Clears the observers list. More...

Private Attributes
map< unsigned int, list< Param * > >	_paramUpdater
map< unsigned int, list< ParamUpdaterBase * > >	_componentUpdater
list< ParamUpdaterBase * >	_updaters

Detailed Description

Class to update the simulation components' state during a simulation.

It stores the ParamUpdater objects. Each ParamUpdater stores a list of parameters from a SimComponent that use a single updating function from that component. That updating function is called to update the state of the SimComponent that declares it at a given generation during a simulation. When attaching an updater to the UpdaterServices, it is added to the _componentUpdater map and the list of its parameters is stored to the _paramUpdater map. Each map has the generation number at which the parameter/component must be updated as a key. The updaters are attached during the simulation setup (SimRunner::register_component). Each parameter set/simulation component is scanned for the presence of temporal parameters and is asked to add its updaters to the stack. The updaters will appear only once in the _updaters list as they store a single updating function although several parameters may upload the same updater. This allows several parameters to be attached to a single updater and use a single updating function from their simulation component.

The updating procedure is as follows: the parameters are first updated with their temporal argument value at the right generation. The components are then updated by using the function pointers stored in the updaters that will fetch the parameters values and update its state. Those updating functions must be implemented seperately for each component and set of parameters. The default SimComponent::setParameters function may suffice most of the time. That function is called only once and thus will update the component's state at the generations given in input by by the user.

Constructor & Destructor Documentation

UpdaterServices()

UpdaterServices::UpdaterServices ( )

inline

{ }

~UpdaterServices()

virtual UpdaterServices::~UpdaterServices ( )

inlinevirtual

{reset();}

References reset().

Member Function Documentation

attach()

void UpdaterServices::attach ( Handler *  H )

virtual

Attach the updater to the stack.

Implements Service.

{
  ParamUpdaterBase* PU = dynamic_cast<ParamUpdaterBase*> (H);
  
  if(!PU) return;
    
  list< Param* > params = PU->getParams();
  
  deque< unsigned int > dates;
    
  for(list<Param*>::const_iterator pit = params.begin();
      pit != params.end(); pit++) {
    
    dates = (*pit)->getUpdatingDates();
    
    for(unsigned int i = 0; i < dates.size(); i++) {
      _paramUpdater[ dates[i] ].push_back((*pit));
      _componentUpdater[ dates[i] ].push_back(PU);
    }
  }
  
  _updaters.push_back(PU);
}

References _componentUpdater, _paramUpdater, _updaters, and ParamUpdaterBase::getParams().

Referenced by SimComponent::loadUpdaters().

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hasTemporals()

bool UpdaterServices::hasTemporals ( )

inline

Checks if any updater has been uploaded.

{return !_paramUpdater.empty();}

References _paramUpdater.

Referenced by SimRunner::init_components().

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init()

bool UpdaterServices::init ( )

virtual

Implements Service.

{
  //consolidate the lists of updaters by removing the duplicates (if they exist)
  for(map<unsigned int, list<ParamUpdaterBase*> >::iterator it = _componentUpdater.begin();
      it != _componentUpdater.end(); it++)
    it->second.unique();
  
  for(map<unsigned int, list<Param*> >::iterator it = _paramUpdater.begin();
      it != _paramUpdater.end(); it++)
    it->second.unique();
    
  _updaters.unique();
  
  for(list<ParamUpdaterBase*>::iterator it = _updaters.begin();
      it != _updaters.end(); it++)
    (*it)->init();
  
  return true;
}

References _componentUpdater, _paramUpdater, and _updaters.

Referenced by SimRunner::init_components().

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load()

void UpdaterServices::load ( SimComponent *  sc )

virtual

Loads the updaters in case a component's parameter has temporal arguments.

Implements Service.

{
  sc->loadUpdaters(this);
}

References SimComponent::loadUpdaters().

Referenced by SimRunner::register_component().

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notify() [1/2]

virtual void UpdaterServices::notify ( )

inlinevirtual

Implements Service.

{}

Referenced by LCE_ParamUpdaterNotifier::execute(), and SimRunner::setForFirstGeneration().

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notify() [2/2]

void UpdaterServices::notify ( unsigned int  generation )

virtual

The generation time is passed to the updaters.

{
  update_params(generation);
  update_components(generation);
}

References update_components(), and update_params().

reset()

void UpdaterServices::reset ( )

virtual

Clears the containers.

Implements Service.

{
  map<unsigned int, list<Param*> >::iterator pit = _paramUpdater.begin();
  
  for(;pit != _paramUpdater.end(); pit++) {
    pit->second.clear();
  }
  _paramUpdater.clear();
  
  map<unsigned int, list<ParamUpdaterBase*> >::iterator scit = _componentUpdater.begin();
  
  for(;scit != _componentUpdater.end(); scit++) {
    scit->second.clear();
  }
  _componentUpdater.clear();
  
  _updaters.clear();
}

References _componentUpdater, _paramUpdater, and _updaters.

Referenced by SimRunner::reset_services(), and ~UpdaterServices().

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update_components()

void UpdaterServices::update_components

(

unsigned int

generation

)

Update the components using the functions stored in the updaters.

{
  map<unsigned int, list<ParamUpdaterBase*> >::iterator mit = _componentUpdater.find(generation);
  
  if(mit == _componentUpdater.end()) return;
  
  for(list<ParamUpdaterBase*>::iterator pit = mit->second.begin(); 
      pit != mit->second.end(); pit++) 
  {
    if( !(*pit)->update(generation) )
      warning("error while updating component \'%s\' at generation %i.\n", 
              (*pit)->getComponent()->get_name().c_str(), generation);
    }
}

References _componentUpdater, and warning().

Referenced by notify().

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update_params()

void UpdaterServices::update_params

(

unsigned int

generation

)

Calls the parameters updating procedure.

The map is searched for the occurence of the generation.

{
  map<unsigned int, list<Param*> >::iterator mit = _paramUpdater.find(generation);
  
  if(mit == _paramUpdater.end()) return;
  
  for(list<Param*>::iterator pit = mit->second.begin(); 
      pit != mit->second.end(); pit++)
    (*pit)->update(generation);
  
}

References _paramUpdater.

Referenced by notify().

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Member Data Documentation

_componentUpdater

map< unsigned int, list< ParamUpdaterBase* > > UpdaterServices::_componentUpdater

private

Referenced by attach(), init(), reset(), and update_components().

_paramUpdater

map< unsigned int, list< Param* > > UpdaterServices::_paramUpdater

private

Referenced by attach(), hasTemporals(), init(), reset(), and update_params().

_updaters

list< ParamUpdaterBase* > UpdaterServices::_updaters

private

Referenced by attach(), init(), and reset().

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The documentation for this class was generated from the following files:

• updaterservices.h
• updaterservices.cc