TriggerExpressionPrescaler.cc

Go to the documentation of this file.

#include "HLTrigger/HLTcore/interface/TriggerExpressionPrescaler.h"

namespace triggerExpression {

bool Prescaler::operator()(const Data & data) const {
  // if the prescale factor is 0, we never need to run any dependent module,
  // so we can safely skip the rest of the processing
  if (m_prescale == 0)
    return false;

  bool result = ((*m_arg)(data));
  if (not result)
    return false;

  // if the prescale factor is 1, we do not need to keep track of the event counter
  if (m_prescale == 1)
    return true;

  return (++m_counter % m_prescale) == 0;
}

void Prescaler::init(const Data & data) {
  // initialize the depending modules
  UnaryOperator::init(data);

  // initialize the counter to the first event number seen, 
  // in order to avoid all prescalers on different FUs to be syncronous
  m_counter = data.eventNumber();
}

} // namespace triggerExpression