/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/HLTrigger/HLTcore/src/TriggerExpressionL1TechReader.cc

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#include <iostream>
#include <bitset>
#include <boost/foreach.hpp>
#include <boost/regex.hpp>

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Utilities/interface/RegexMatch.h"
#include "CondFormats/L1TObjects/interface/L1GtTriggerMask.h"
#include "CondFormats/L1TObjects/interface/L1GtTriggerMenu.h"
#include "CondFormats/L1TObjects/interface/L1GtTriggerMenuFwd.h"
#include "DataFormats/L1GlobalTrigger/interface/L1GlobalTriggerReadoutRecord.h"
#include "HLTrigger/HLTcore/interface/TriggerExpressionData.h"
#include "HLTrigger/HLTcore/interface/TriggerExpressionL1TechReader.h"

namespace triggerExpression {

// define the result of the module from the L1 reults
bool L1TechReader::operator()(const Data & data) const {
  if (not data.hasL1T())
    return false;

  typedef std::pair<std::string, unsigned int> value_type;
  if (data.ignoreL1TechPrescales()) {
    // select PSB#9 and bunch crossing 0
    const L1GtPsbWord & psb = data.l1tResults().gtPsbWord(0xbb09, 0);
    // the four 16-bit words psb.bData(1), psb.aData(1), psb.bData(0) and psb.aData(0) yield
    // (in this sequence) the 64 technical trigger bits from most significant to least significant bit
    uint64_t psbTriggerWord = ((uint64_t) psb.bData(1) << 48) | 
                              ((uint64_t) psb.aData(1) << 32) | 
                              ((uint64_t) psb.bData(0) << 16) | 
                              ((uint64_t) psb.aData(0));
    BOOST_FOREACH(const value_type & trigger, m_triggers)
      if (psbTriggerWord & ((uint64_t) 0x01 << trigger.second))
        return true;
  } else {
    const std::vector<bool> & word = data.l1tResults().technicalTriggerWord();
    if (word.empty())
      return false;

    BOOST_FOREACH(const value_type & trigger, m_triggers)
      if (trigger.second < word.size() and word[trigger.second])
        return true;
  }

  return false;
}

void L1TechReader::dump(std::ostream & out) const {
  if (m_triggers.size() == 0) {
    out << "FALSE";
  } else if (m_triggers.size() == 1) {
    out << m_triggers[0].first;
  } else {
    out << "(" << m_triggers[0].first;
    for (unsigned int i = 1; i < m_triggers.size(); ++i)
      out << " OR " << m_triggers[i].first;
    out << ")";
  }
}

void L1TechReader::init(const Data & data) {
  const L1GtTriggerMenu & menu = data.l1tMenu();
  const L1GtTriggerMask & mask = data.l1tTechMask();

  // clear the previous configuration
  m_triggers.clear();

  // L1 technical bits have a versioning suffix (".v0", ".v1", etc...)
  // so we always go through wildcard expansion
  bool match = false;
  boost::regex re(edm::glob2reg(m_pattern) + "\\.v\\d");
  const AlgorithmMap & triggerMap = menu.gtTechnicalTriggerMap();
  BOOST_FOREACH(const AlgorithmMap::value_type & entry, triggerMap)
    if (boost::regex_match(entry.first, re)) {
      match = true;
      if (data.ignoreL1Mask() or (mask.gtTriggerMask()[entry.second.algoBitNumber()] & data.daqPartitions()) != data.daqPartitions()) // unmasked in one or more partitions
        m_triggers.push_back( std::make_pair(entry.first, entry.second.algoBitNumber()) );
    }

  if (not match) {
    // m_pattern does not match any L1 bits
    if (data.shouldThrow())
      throw cms::Exception("Configuration") << "requested pattern \"" << m_pattern <<  "\" does not match any L1 trigger in the current menu";
    else
      edm::LogWarning("Configuration") << "requested pattern \"" << m_pattern <<  "\" does not match any L1 trigger in the current menu";
  }

}

} // namespace triggerExpression