end.tv_sec = start.tv_sec + timeout.tv_sec;

	if( ( start.tv_nsec + timeout.tv_nsec ) >= 1000000000 ) {

		end.tv_sec++;
		end.tv_nsec = ( start.tv_nsec + timeout.tv_nsec ) - 1000000000;

	}
	else {

		end.tv_nsec = start.tv_nsec + timeout.tv_nsec;

	}