hashing.hpp

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/*
 * Copyright (c) 2019-2025, 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/table/table.hpp>
#include <cudf/table/table_view.hpp>
#include <cudf/utilities/export.hpp>
#include <cudf/utilities/memory_resource.hpp>

namespace CUDF_EXPORT cudf {

using hash_value_type = uint32_t;

static constexpr uint32_t DEFAULT_HASH_SEED = 0;

namespace hashing {

std::unique_ptr<column> murmurhash3_x86_32(
 table_view const& input,
 uint32_t seed = DEFAULT_HASH_SEED,
 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> murmurhash3_x64_128(
 table_view const& input,
 uint64_t seed = DEFAULT_HASH_SEED,
 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> md5(
 table_view const& input,
 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> sha1(
 table_view const& input,
 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> sha224(
 table_view const& input,
 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> sha256(
 table_view const& input,
 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> sha384(
 table_view const& input,
 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> sha512(
 table_view const& input,
 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> xxhash_32(
 table_view const& input,
 uint32_t seed = DEFAULT_HASH_SEED,
 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> xxhash_64(
 table_view const& input,
 uint64_t seed = DEFAULT_HASH_SEED,
 rmm::cuda_stream_view stream = cudf::get_default_stream(),
 rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
 // end of group

} // namespace hashing

} // namespace CUDF_EXPORT cudf