Function thd_progress_report

sql/sql_class.cc:5245–5268

/* Inform processlist and the client that some progress has been made */

extern "C" void thd_progress_report(MYSQL_THD thd,
                                    ulonglong progress, ulonglong max_progress)
{
  if (thd->stmt_arena != thd->progress.arena)
    return;
  if (thd->progress.max_counter != max_progress)        // Simple optimization
  {
    /*
      Better to not wait in the unlikely event that LOCK_thd_data is locked
      as Galera can potentially have this locked for a long time.
      Progress counters will fix themselves after the next call.
    */
    if (mysql_mutex_trylock(&thd->LOCK_thd_data))
      return;
    thd->progress.counter= progress;
    thd->progress.max_counter= max_progress;
    mysql_mutex_unlock(&thd->LOCK_thd_data);
  }
  else
    thd->progress.counter= progress;

  if (thd->progress.report)
    thd_send_progress(thd);
}

/**
  Move to next stage in process list handling