cudf::list_scalar Class Reference

An owning class to represent a list value in device memory. More...

#include <scalar.hpp>

Inheritance diagram for cudf::list_scalar:

Public Member Functions
	list_scalar (list_scalar &&other)=default
	Move constructor for list_scalar. More...
list_scalar &	operator= (list_scalar const &other)=delete
list_scalar &	operator= (list_scalar &&other)=delete
	list_scalar (list_scalar const &other, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new list scalar object by deep copying another. More...
	list_scalar (cudf::column_view const &data, bool is_valid=true, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new list scalar object from column_view. More...
	list_scalar (cudf::column &&data, bool is_valid=true, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new list scalar object from existing column. More...
column_view	view () const
	Returns a non-owning, immutable view to underlying device data. More...
Public Member Functions inherited from cudf::scalar
scalar &	operator= (scalar const &other)=delete
scalar &	operator= (scalar &&other)=delete
data_type	type () const noexcept
	Returns the scalar's logical value type. More...
void	set_valid_async (bool is_valid, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Updates the validity of the value. More...
bool	is_valid (rmm::cuda_stream_view stream=cudf::get_default_stream()) const
	Indicates whether the scalar contains a valid value. More...
bool *	validity_data ()
	Returns a raw pointer to the validity bool in device memory. More...
bool const *	validity_data () const
	Return a const raw pointer to the validity bool in device memory. More...

Additional Inherited Members
Protected Member Functions inherited from cudf::scalar
	scalar (scalar &&other)=default
	Move constructor for scalar. More...
	scalar (scalar const &other, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new scalar object by deep copying another. More...
	scalar (data_type type, bool is_valid=false, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new scalar object. More...
Protected Attributes inherited from cudf::scalar
data_type	_type {type_id::EMPTY}
	Logical type of value in the scalar.
rmm::device_scalar< bool >	_is_valid
	Device bool signifying validity.

Detailed Description

An owning class to represent a list value in device memory.

Definition at line 731 of file scalar.hpp.

Constructor & Destructor Documentation

list_scalar() [1/4]

cudf::list_scalar::list_scalar ( list_scalar &&  other )

default

Move constructor for list_scalar.

Parameters

other

The other list_scalar to move from.

list_scalar() [2/4]

cudf::list_scalar::list_scalar	(	list_scalar const &	other,
		rmm::cuda_stream_view	stream = cudf::get_default_stream(),
		rmm::device_async_resource_ref	mr = rmm::mr::get_current_device_resource()
	)

Construct a new list scalar object by deep copying another.

Parameters

other	The scalar to copy.
stream	CUDA stream used for device memory operations.
mr	Device memory resource to use for device memory allocation.

list_scalar() [3/4]

cudf::list_scalar::list_scalar	(	cudf::column_view const &	data,
		bool	is_valid = true,
		rmm::cuda_stream_view	stream = cudf::get_default_stream(),
		rmm::device_async_resource_ref	mr = rmm::mr::get_current_device_resource()
	)

Construct a new list scalar object from column_view.

The input column_view is copied.

Parameters

data	The column data to copy.
is_valid	Whether the value held by the scalar is valid.
stream	CUDA stream used for device memory operations.
mr	Device memory resource to use for device memory allocation.

list_scalar() [4/4]

cudf::list_scalar::list_scalar	(	cudf::column &&	data,
		bool	is_valid = true,
		rmm::cuda_stream_view	stream = cudf::get_default_stream(),
		rmm::device_async_resource_ref	mr = rmm::mr::get_current_device_resource()
	)

Construct a new list scalar object from existing column.

Parameters

data	The column to take ownership of.
is_valid	Whether the value held by the scalar is valid.
stream	CUDA stream used for device memory operations.
mr	Device memory resource to use for device memory allocation.

Member Function Documentation

view()

column_view cudf::list_scalar::view

(

)

const

Returns a non-owning, immutable view to underlying device data.

Returns

A non-owning, immutable view to underlying device data

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The documentation for this class was generated from the following file:

• scalar.hpp