/**
 * Method to return the exit code of a terminated child process.
 *
 * @param   integer  $status  The status parameter is the status parameter supplied to a successful call to pcntl_waitpid().
 *
 * @return  integer  The child process exit code.
 *
 * @see     pcntl_wexitstatus()
 * @since   1.7.3
 */
protected function pcntlChildExitStatus($status)
{
    return pcntl_wexitstatus($status);
}