Function wait_while_table_is_used

sql/sql_base.cc:1477–1501

*/

bool wait_while_table_is_used(THD *thd, TABLE *table,
                              enum ha_extra_function function)
{
  DBUG_ENTER("wait_while_table_is_used");
  DBUG_ASSERT(!table->s->tmp_table);
  DBUG_PRINT("enter", ("table: '%s'  share: %p  db_stat: %u",
                       table->s->table_name.str, table->s,
                       table->db_stat));

  if (thd->mdl_context.upgrade_shared_lock(
             table->mdl_ticket, MDL_EXCLUSIVE,
             thd->variables.lock_wait_timeout))
    DBUG_RETURN(TRUE);

  table->s->tdc->flush(thd, true);
  /* extra() call must come only after all instances above are closed */
  if (function != HA_EXTRA_NOT_USED)
  {
    int error= table->file->extra(function);
    if (error)
      table->file->print_error(error, MYF(0));
    DBUG_RETURN(error);
  }
  DBUG_RETURN(FALSE);
}


/**