dictionary_factories.hpp
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16 #pragma once
17 
18 #include <cudf/column/column.hpp>
20 #include <cudf/utilities/default_stream.hpp>
21 
22 #include <rmm/cuda_stream_view.hpp>
24 
25 namespace cudf {
65 std::unique_ptr<column> make_dictionary_column(
66  column_view const& keys_column,
67  column_view const& indices_column,
70 
91 std::unique_ptr<column> make_dictionary_column(std::unique_ptr<column> keys_column,
92  std::unique_ptr<column> indices_column,
93  rmm::device_buffer&& null_mask,
95 
117 std::unique_ptr<column> make_dictionary_column(
118  std::unique_ptr<column> keys_column,
119  std::unique_ptr<column> indices_column,
122  // end of group
124 } // 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::mr::device_memory_resource *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,...
device_memory_resource * get_current_device_resource()
int32_t size_type
Row index type for columns and tables.
Definition: types.hpp:80
cuDF interfaces
Definition: aggregation.hpp:34
rmm::cuda_stream_view const get_default_stream()
Get the current default stream.