Method rotate

phx_percona/percona/sql/binlog.cc:5657–5673

The method executes rotation when LOCK_log is already acquired by the caller. @param force_rotate caller can request the log rotation @param check_purge is set to true if rotation took place @note If rotation fails, for instance the server was unable to create a new log file, we still try to write an incident event to the current log. @note The caller must hold LOCK_l

    nonzero - error in rotating routine.
*/
int MYSQL_BIN_LOG::rotate(bool force_rotate, bool* check_purge)
{
  int error= 0;
  DBUG_ENTER("MYSQL_BIN_LOG::rotate");

  DBUG_ASSERT(!is_relay_log);
  mysql_mutex_assert_owner(&LOCK_log);

  *check_purge= false;

  if (force_rotate || (my_b_tell(&log_file) >= (my_off_t) max_size))
  {
    error= new_file_without_locking(NULL);
    *check_purge= true;
  }
  DBUG_RETURN(error);
}

/**
  The method executes logs purging routine.