TrigPassBitsCnv_p1.cxx

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
#include "TrigSteeringEvent/TrigPassBits.h"
#include <cmath>
#include <iostream>
#include "TrigSteeringEventTPCnv/TrigPassBits_p1.h"
#include "TrigSteeringEventTPCnv/TrigPassBitsCnv_p1.h"
 
 
 
void  store_bits(const std::vector<bool>& bits, std::vector<uint32_t>& store ){
  const unsigned word_count = store.size();
  const unsigned bits_count = bits.size();
 
  for ( unsigned word = 0; word < word_count; ++word) {    
    uint32_t& temp(store[word]);
 
    for ( unsigned bit = 0; bit < 32; ++bit) {
      const unsigned position = word*32+bit;
      if (position >= bits_count )
    return;
      if (bits[position])
    temp |= (1 << bit);
    }
  }
}
 
void restore_bits(std::vector<bool>& bits, const std::vector<uint32_t>& store) {
  const unsigned word_count = store.size();
  const unsigned bits_count = bits.size();
 
 
  for ( unsigned word = 0; word < word_count; ++word) {    
    const uint32_t& temp(store[word]);
 
    for ( unsigned bit = 0; bit < 32; ++bit) {
      const unsigned position = word*32+bit;
      if (position >= bits_count )
    return;
 
      if (temp & (1 << bit))
    bits[position] = true;
      else
    bits[position] = false;      
    }
  }
}
 
 
unsigned necessary_words(unsigned size) {
  return  (size ? 1 : 0) + size/32;
}
 
 
 
void TrigPassBitsCnv_p1::persToTrans(const TrigPassBits_p1* persObj, 
                     TrigPassBits* transObj, 
                     MsgStream &log)
{
   log << MSG::DEBUG << "TrigPassBitsCnv_p1::persToTrans called " << endmsg;
   
   transObj->m_decisions.resize(persObj->m_size, false); // reserve space and set defaults to 0
 
   restore_bits(transObj->m_decisions, persObj->m_serialized); // get back the bits
 
}
 
 
void TrigPassBitsCnv_p1::transToPers(const TrigPassBits* transObj, 
                     TrigPassBits_p1* persObj, 
                     MsgStream &log)
{
   log << MSG::DEBUG << "TrigPassBitsCnv_p1::transToPers called " << endmsg;
   persObj->m_size = transObj->m_decisions.size();   
 
   persObj->m_serialized.resize(necessary_words(persObj->m_size), 0); // reserve the space and set the content to 0
 
   store_bits(transObj->m_decisions, persObj->m_serialized); // pack the bits
}