copying.hpp File Reference

Column APIs for gather, scatter, split, slice, etc. More...

#include <cudf/column/column_view.hpp>
#include <cudf/lists/lists_column_view.hpp>
#include <cudf/scalar/scalar.hpp>
#include <cudf/strings/strings_column_view.hpp>
#include <cudf/structs/structs_column_view.hpp>
#include <cudf/table/table.hpp>
#include <cudf/types.hpp>
#include <rmm/mr/device/per_device_resource.hpp>
#include <memory>
#include <vector>

Go to the source code of this file.

Namespaces
	cudf
	cuDF interfaces

Enumerations
enum class	cudf::out_of_bounds_policy : bool { cudf::NULLIFY , cudf::DONT_CHECK }
	Policy to account for possible out-of-bounds indices. More...
enum class	cudf::mask_allocation_policy : int32_t { cudf::NEVER , cudf::RETAIN , cudf::ALWAYS }
	Indicates when to allocate a mask, based on an existing mask. More...
enum class	cudf::sample_with_replacement : bool { cudf::FALSE , cudf::TRUE }
	Indicates whether a row can be sampled more than once. More...

Functions
std::unique_ptr< table >	cudf::gather (table_view const &source_table, column_view const &gather_map, out_of_bounds_policy bounds_policy=out_of_bounds_policy::DONT_CHECK, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Gathers the specified rows (including null values) of a set of columns. More...
std::unique_ptr< table >	cudf::reverse (table_view const &source_table, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Reverses the rows within a table. More...
std::unique_ptr< column >	cudf::reverse (column_view const &source_column, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Reverses the elements of a column. More...
std::unique_ptr< table >	cudf::scatter (table_view const &source, column_view const &scatter_map, table_view const &target, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Scatters the rows of the source table into a copy of the target table according to a scatter map. More...
std::unique_ptr< table >	cudf::scatter (std::vector< std::reference_wrapper< scalar const >> const &source, column_view const &indices, table_view const &target, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Scatters a row of scalar values into a copy of the target table according to a scatter map. More...
std::unique_ptr< column >	cudf::empty_like (column_view const &input)
	Initializes and returns an empty column of the same type as the input. More...
std::unique_ptr< column >	cudf::empty_like (scalar const &input)
	Initializes and returns an empty column of the same type as the input. More...
std::unique_ptr< column >	cudf::allocate_like (column_view const &input, mask_allocation_policy mask_alloc=mask_allocation_policy::RETAIN, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Creates an uninitialized new column of the same size and type as the input. More...
std::unique_ptr< column >	cudf::allocate_like (column_view const &input, size_type size, mask_allocation_policy mask_alloc=mask_allocation_policy::RETAIN, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Creates an uninitialized new column of the specified size and same type as the input. More...
std::unique_ptr< table >	cudf::empty_like (table_view const &input_table)
	Creates a table of empty columns with the same types as the input_table More...
void	cudf::copy_range_in_place (column_view const &source, mutable_column_view &target, size_type source_begin, size_type source_end, size_type target_begin, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Copies a range of elements in-place from one column to another. More...
std::unique_ptr< column >	cudf::copy_range (column_view const &source, column_view const &target, size_type source_begin, size_type source_end, size_type target_begin, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Copies a range of elements out-of-place from one column to another. More...
std::unique_ptr< column >	cudf::shift (column_view const &input, size_type offset, scalar const &fill_value, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Creates a new column by shifting all values by an offset. More...
std::vector< column_view >	cudf::slice (column_view const &input, host_span< size_type const > indices, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Slices a column_view into a set of column_views according to a set of indices. More...
std::vector< column_view >	cudf::slice (column_view const &input, std::initializer_list< size_type > indices, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Slices a column_view into a set of column_views according to a set of indices. More...
std::vector< table_view >	cudf::slice (table_view const &input, host_span< size_type const > indices, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Slices a table_view into a set of table_views according to a set of indices. More...
std::vector< table_view >	cudf::slice (table_view const &input, std::initializer_list< size_type > indices, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Slices a table_view into a set of table_views according to a set of indices. More...
std::vector< column_view >	cudf::split (column_view const &input, host_span< size_type const > splits, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Splits a column_view into a set of column_views according to a set of indices derived from expected splits. More...
std::vector< column_view >	cudf::split (column_view const &input, std::initializer_list< size_type > splits, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Splits a column_view into a set of column_views according to a set of indices derived from expected splits. More...
std::vector< table_view >	cudf::split (table_view const &input, host_span< size_type const > splits, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Splits a table_view into a set of table_views according to a set of indices derived from expected splits. More...
std::vector< table_view >	cudf::split (table_view const &input, std::initializer_list< size_type > splits, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Splits a table_view into a set of table_views according to a set of indices derived from expected splits. More...
std::unique_ptr< column >	cudf::copy_if_else (column_view const &lhs, column_view const &rhs, column_view const &boolean_mask, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Returns a new column, where each element is selected from either lhs or rhs based on the value of the corresponding element in boolean_mask. More...
std::unique_ptr< column >	cudf::copy_if_else (scalar const &lhs, column_view const &rhs, column_view const &boolean_mask, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Returns a new column, where each element is selected from either lhs or rhs based on the value of the corresponding element in boolean_mask. More...
std::unique_ptr< column >	cudf::copy_if_else (column_view const &lhs, scalar const &rhs, column_view const &boolean_mask, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Returns a new column, where each element is selected from either lhs or rhs based on the value of the corresponding element in boolean_mask. More...
std::unique_ptr< column >	cudf::copy_if_else (scalar const &lhs, scalar const &rhs, column_view const &boolean_mask, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Returns a new column, where each element is selected from either lhs or rhs based on the value of the corresponding element in boolean_mask. More...
std::unique_ptr< table >	cudf::boolean_mask_scatter (table_view const &input, table_view const &target, column_view const &boolean_mask, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Scatters rows from the input table to rows of the output corresponding to true values in a boolean mask. More...
std::unique_ptr< table >	cudf::boolean_mask_scatter (std::vector< std::reference_wrapper< scalar const >> const &input, table_view const &target, column_view const &boolean_mask, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Scatters scalar values to rows of the output corresponding to true values in a boolean mask. More...
std::unique_ptr< scalar >	cudf::get_element (column_view const &input, size_type index, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Get the element at specified index from a column. More...
std::unique_ptr< table >	cudf::sample (table_view const &input, size_type const n, sample_with_replacement replacement=sample_with_replacement::FALSE, int64_t const seed=0, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Gather n samples from given input randomly. More...
bool	cudf::has_nonempty_nulls (column_view const &input, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Checks if a column or its descendants have non-empty null rows. More...
bool	cudf::may_have_nonempty_nulls (column_view const &input)
	Approximates if a column or its descendants may have non-empty null elements. More...
std::unique_ptr< column >	cudf::purge_nonempty_nulls (column_view const &input, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Copy input into output while purging any non-empty null rows in the column or its descendants. More...

Detailed Description

Column APIs for gather, scatter, split, slice, etc.

Definition in file copying.hpp.