PrescalingEmulationTool Class Reference

#include <PrescalingEmulationTool.h>

Inheritance diagram for PrescalingEmulationTool:

Collaboration diagram for PrescalingEmulationTool:

Public Member Functions
	PrescalingEmulationTool (const std::string &type, const std::string &name, const IInterface *parent)
virtual StatusCode	initialize () override
virtual StatusCode	prescaleChains (const EventContext &ctx, const HLT::IDVec &initiallyActive, HLT::IDVec &remainActive, bool forExpressStream=false) const override

Private Types
typedef std::map< HLT::Identifier, float >	PrescalingInfo

Private Member Functions
	PrescalingEmulationTool ()

Private Attributes
Gaudi::Property< bool >	m_keepUnknownChains
Gaudi::Property< std::vector< std::string > >	m_prescalingConfig
ATHRNG::RNGWrapper	m_RNGEngines
PrescalingInfo	m_prescalingInfo

Detailed Description

Definition at line 30 of file PrescalingEmulationTool.h.

Member Typedef Documentation

PrescalingInfo

typedef std::map<HLT::Identifier, float> PrescalingEmulationTool::PrescalingInfo

private

Definition at line 54 of file PrescalingEmulationTool.h.

Constructor & Destructor Documentation

PrescalingEmulationTool() [1/2]

PrescalingEmulationTool::PrescalingEmulationTool	(	const std::string &	type,
		const std::string &	name,
		const IInterface *	parent
	)

Definition at line 16 of file PrescalingEmulationTool.cxx.

  : base_class(type, name, parent),
    m_RNGEngines( RanluxFactory, SG::getNSlots() ) { }

PrescalingEmulationTool() [2/2]

PrescalingEmulationTool::PrescalingEmulationTool ( )

private

Member Function Documentation

initialize()

StatusCode PrescalingEmulationTool::initialize ( )

overridevirtual

Definition at line 23 of file PrescalingEmulationTool.cxx.

                                               {
  for ( const std::string& confElement: m_prescalingConfig ) {
    std::string chainName( confElement, 0, confElement.find(':') );
    std::string psValue( confElement, confElement.find(':')+1 );
    ATH_MSG_DEBUG( "Decoded part of the config " << chainName << " " << psValue );
    m_prescalingInfo[HLT::Identifier( chainName ) ] = 1./std::stof( psValue );
  }
  return StatusCode::SUCCESS;
}

prescaleChains()

StatusCode PrescalingEmulationTool::prescaleChains ( const EventContext &  ctx, const HLT::IDVec &  initiallyActive, HLT::IDVec &  remainActive, bool  forExpressStream = false  ) const

overridevirtual

Definition at line 34 of file PrescalingEmulationTool.cxx.

                                                                                  {
 
  ATH_MSG_DEBUG("Express stream prescaling ignored in Emulation tool" << forExpressStream);
 
  if ( initiallyActive.empty() ) {
    return StatusCode::SUCCESS;
  }
 
  // obtain CTP time
  remainActive.reserve( initiallyActive.size() );
 
  // create the seed from the event time
  size_t seed = ctx.eventID().time_stamp() ^ ctx.eventID().time_stamp_ns_offset();
  CLHEP::HepRandomEngine* engine = m_RNGEngines.getEngine( ctx );
  engine->setSeed( seed, 0 );
  for ( auto ch: initiallyActive ) {
    PrescalingInfo::const_iterator chainPS = m_prescalingInfo.find( ch );
    const bool decision = (chainPS != m_prescalingInfo.end()) ?
                          engine->flat() < chainPS->second :
                          bool(m_keepUnknownChains);
    ATH_MSG_DEBUG("Prescaling decision for chain " << ch << " " << decision );
    if ( decision ) {
      remainActive.push_back( ch );
    }
  }
  return StatusCode::SUCCESS;
}

Member Data Documentation

m_keepUnknownChains

Gaudi::Property<bool> PrescalingEmulationTool::m_keepUnknownChains

private

Initial value:

{
    this, "KeepUnknownChains", true, "If True then chains for which prescaling information is not set are kept"}

Definition at line 46 of file PrescalingEmulationTool.h.

m_prescalingConfig

Gaudi::Property< std::vector<std::string> > PrescalingEmulationTool::m_prescalingConfig

private

Initial value:

{
    this, "Prescales", {}, "The prescaling info in the form: \"chainName:PSValue\""}

Definition at line 49 of file PrescalingEmulationTool.h.

m_prescalingInfo

PrescalingInfo PrescalingEmulationTool::m_prescalingInfo

private

Definition at line 55 of file PrescalingEmulationTool.h.

m_RNGEngines

ATHRNG::RNGWrapper PrescalingEmulationTool::m_RNGEngines

private

Definition at line 52 of file PrescalingEmulationTool.h.

---

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

• PrescalingEmulationTool.h
• PrescalingEmulationTool.cxx