Method NotifyCallback

libs/map/gps_track.cpp:294–339

}

void GpsTrack::NotifyCallback(pair<size_t, size_t> const & addedIds, pair<size_t, size_t> const & evictedIds)
{
  lock_guard<mutex> lg(m_callbackGuard);

  if (!m_callback)
    return;

  if (m_needSendSnapshop)
  {
    m_needSendSnapshop = false;

    vector<pair<size_t, location::GpsInfo>> toAdd;
    toAdd.reserve(m_collection->GetSize());
    m_collection->ForEach([&toAdd](location::GpsInfo const & point, size_t id) -> bool
    {
      toAdd.emplace_back(id, point);
      return true;
    });

    if (toAdd.empty())
      return;  // nothing to send

    m_callback(std::move(toAdd), make_pair(kInvalidId, kInvalidId), m_collection->GetTrackStatistics());
  }
  else
  {
    vector<pair<size_t, location::GpsInfo>> toAdd;
    if (addedIds.first != kInvalidId)
    {
      size_t const addedCount = addedIds.second - addedIds.first + 1;
      ASSERT_GREATER_OR_EQUAL(m_collection->GetSize(), addedCount, ());
      toAdd.reserve(addedCount);
      m_collection->ForEach([&toAdd](location::GpsInfo const & point, size_t id) -> bool
      {
        toAdd.emplace_back(id, point);
        return true;
      }, m_collection->GetSize() - addedCount);
      ASSERT_EQUAL(toAdd.size(), addedCount, ());
    }

    if (toAdd.empty() && evictedIds.first == kInvalidId)
      return;  // nothing to send

    m_callback(std::move(toAdd), evictedIds, m_collection->GetTrackStatistics());
  }
}