dictionary_factories.hpp
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16 #pragma once
17 
18 #include <cudf/column/column.hpp>
21 
22 #include <rmm/cuda_stream_view.hpp>
23 #include <rmm/mr/device/per_device_resource.hpp>
24 #include <rmm/resource_ref.hpp>
25 
26 namespace cudf {
66 std::unique_ptr<column> make_dictionary_column(
67  column_view const& keys_column,
68  column_view const& indices_column,
69  rmm::cuda_stream_view stream = cudf::get_default_stream(),
70  rmm::device_async_resource_ref mr = rmm::mr::get_current_device_resource());
71 
92 std::unique_ptr<column> make_dictionary_column(std::unique_ptr<column> keys_column,
93  std::unique_ptr<column> indices_column,
94  rmm::device_buffer&& null_mask,
96 
118 std::unique_ptr<column> make_dictionary_column(
119  std::unique_ptr<column> keys_column,
120  std::unique_ptr<column> indices_column,
121  rmm::cuda_stream_view stream = cudf::get_default_stream(),
122  rmm::device_async_resource_ref mr = rmm::mr::get_current_device_resource());
123  // end of group
125 } // namespace cudf
A non-owning, immutable view of device data as a column of elements, some of which may be null as ind...
Class definition for cudf::column.
column view class definitions
std::unique_ptr< column > make_dictionary_column(column_view const &keys_column, column_view const &indices_column, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
Construct a dictionary column by copying the provided keys and indices.
cudf::size_type null_count(bitmask_type const *bitmask, size_type start, size_type stop, rmm::cuda_stream_view stream=cudf::get_default_stream())
Given a validity bitmask, counts the number of null elements (unset bits) in the range [start,...
rmm::cuda_stream_view const get_default_stream()
Get the current default stream.
int32_t size_type
Row index type for columns and tables.
Definition: types.hpp:93
cuDF interfaces
Definition: aggregation.hpp:34