Method insert

sql/sql_class.cc:4580–4625

*/

int Statement_map::insert(THD *thd, Statement *statement)
{
  if (my_hash_insert(&st_hash, (uchar*) statement))
  {
    /*
      Delete is needed only in case of an insert failure. In all other
      cases hash_delete will also delete the statement.
    */
    delete statement;
    my_error(ER_OUT_OF_RESOURCES, MYF(0));
    goto err_st_hash;
  }
  if (statement->name.str && my_hash_insert(&names_hash, (uchar*) statement))
  {
    my_error(ER_OUT_OF_RESOURCES, MYF(0));
    goto err_names_hash;
  }
  mysql_mutex_lock(&LOCK_prepared_stmt_count);
  /*
    We don't check that prepared_stmt_count is <= max_prepared_stmt_count
    because we would like to allow to lower the total limit
    of prepared statements below the current count. In that case
    no new statements can be added until prepared_stmt_count drops below
    the limit.
  */
  if (prepared_stmt_count >= max_prepared_stmt_count)
  {
    mysql_mutex_unlock(&LOCK_prepared_stmt_count);
    my_error(ER_MAX_PREPARED_STMT_COUNT_REACHED, MYF(0),
             max_prepared_stmt_count);
    goto err_max;
  }
  prepared_stmt_count++;
  mysql_mutex_unlock(&LOCK_prepared_stmt_count);

  last_found_statement= statement;
  return 0;

err_max:
  if (statement->name.str)
    my_hash_delete(&names_hash, (uchar*) statement);
err_names_hash:
  my_hash_delete(&st_hash, (uchar*) statement);
err_st_hash:
  return 1;
}


void Statement_map::close_transient_cursors()