stream_compaction.hpp

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/*
 * Copyright (c) 2019-2024, NVIDIA CORPORATION.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://apache.ac.cn/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <cudf/types.hpp>
#include <cudf/utilities/default_stream.hpp>
#include <cudf/utilities/export.hpp>
#include <cudf/utilities/memory_resource.hpp>

#include <memory>
#include <vector>

namespace CUDF_EXPORT cudf {
std::unique_ptr<table> drop_nulls(
 table_view const& input,
 std::vector<size_type> const& keys,
 cudf::size_type keep_threshold,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

std::unique_ptr<table> drop_nulls(
 table_view const& input,
 std::vector<size_type> const& keys,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

std::unique_ptr<table> drop_nans(
 table_view const& input,
 std::vector<size_type> const& keys,
 cudf::size_type keep_threshold,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

std::unique_ptr<table> drop_nans(
 table_view const& input,
 std::vector<size_type> const& keys,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

std::unique_ptr<table> apply_boolean_mask(
 table_view const& input,
 column_view const& boolean_mask,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

enum class duplicate_keep_option {
 KEEP_ANY = 0,
 KEEP_FIRST,
 KEEP_LAST,
 KEEP_NONE
};

std::unique_ptr<table> unique(
 table_view const& input,
 std::vector<size_type> const& keys,
 duplicate_keep_option keep,
 null_equality nulls_equal = null_equality::EQUAL,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

std::unique_ptr<table> distinct(
 table_view const& input,
 std::vector<size_type> const& keys,
 duplicate_keep_option keep = duplicate_keep_option::KEEP_ANY,
 null_equality nulls_equal = null_equality::EQUAL,
 nan_equality nans_equal = nan_equality::ALL_EQUAL,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

std::unique_ptr<column> distinct_indices(
 table_view const& input,
 duplicate_keep_option keep = duplicate_keep_option::KEEP_ANY,
 null_equality nulls_equal = null_equality::EQUAL,
 nan_equality nans_equal = nan_equality::ALL_EQUAL,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

std::unique_ptr<table> stable_distinct(
 table_view const& input,
 std::vector<size_type> const& keys,
 duplicate_keep_option keep = duplicate_keep_option::KEEP_ANY,
 null_equality nulls_equal = null_equality::EQUAL,
 nan_equality nans_equal = nan_equality::ALL_EQUAL,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());

cudf::size_type unique_count(column_view const& input,
 null_policy null_handling,
 nan_policy nan_handling,
 rmm::cuda_stream_view stream = cudf::get_default_stream());

cudf::size_type unique_count(table_view const& input,
 null_equality nulls_equal = null_equality::EQUAL,
 rmm::cuda_stream_view stream = cudf::get_default_stream());

cudf::size_type distinct_count(column_view const& input,
 null_policy null_handling,
 nan_policy nan_handling,
 rmm::cuda_stream_view stream = cudf::get_default_stream());

cudf::size_type distinct_count(table_view const& input,
 null_equality nulls_equal = null_equality::EQUAL,
 rmm::cuda_stream_view stream = cudf::get_default_stream());

} // namespace CUDF_EXPORT cudf