Clearing buffer when disabled

[emiralpayar]

Hello,
I am trying to implement a functionality to the rosbag_snapshot package to clear the buffer when it is disabled by calling the enable_snapshot service by 'false' value. In the snapshotter.cpp file, I added clear to the enableCB( ) function, but when I check the memory usage, the node does not free the memory it allocates after disabling it. Any help about this would be appreciated. Thanks in advance.

bool Snapshotter::enableCB(std_srvs::SetBool::Request& req, std_srvs::SetBool::Response& res)
{
  boost::upgrade_lock<boost::upgrade_mutex> read_lock(state_lock_);
  if (req.data && writing_)  // Cannot enable while writing
  {
    res.success = false;
    res.message = "cannot enable recording while writing.";
    return true;
  }
  // Obtain write lock and update state if requested state is different from current
  if (req.data && !recording_)
  {
    boost::upgrade_to_unique_lock<boost::upgrade_mutex> write_lock(read_lock);
    resume();
  }
  else if (!req.data && recording_)
  {
    boost::upgrade_to_unique_lock<boost::upgrade_mutex> write_lock(read_lock);
    pause();
    clear(); // The part I added to the code !!
  }
  res.success = true;
  return true;
}