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Clean up xxhash_64 implementations #17455

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merged 5 commits into from
Nov 28, 2024
Merged

Clean up xxhash_64 implementations #17455

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70e2497
Updates
PointKernel Nov 26, 2024
95fe1f6
Cleanups
PointKernel Nov 26, 2024
6b721da
Fix ctor
PointKernel Nov 26, 2024
2b41edb
Merge branch 'branch-25.02' into improve-xxhash64
mhaseeb123 Nov 27, 2024
757d517
Merge remote-tracking branch 'upstream/branch-25.02' into improve-xxh…
PointKernel Nov 27, 2024
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46 changes: 22 additions & 24 deletions cpp/include/cudf/hashing/detail/xxhash_64.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -28,77 +28,75 @@
namespace cudf::hashing::detail {

template <typename Key>
struct XXHash_64 : public cuco::xxhash_64<Key> {
using result_type = typename cuco::xxhash_64<Key>::result_type;
struct XXHash_64 {
using result_type = std::uint64_t;

__host__ __device__ constexpr XXHash_64(uint64_t seed = cudf::DEFAULT_HASH_SEED)
: cuco::xxhash_64<Key>{seed}
{
}
__host__ __device__ constexpr XXHash_64(uint64_t seed = cudf::DEFAULT_HASH_SEED) : _impl{seed} {}

__device__ result_type operator()(Key const& key) const
__device__ constexpr result_type operator()(Key const& key) const { return this->_impl(key); }

__device__ constexpr result_type compute_bytes(cuda::std::byte const* bytes,
std::uint64_t size) const
{
return cuco::xxhash_64<Key>::operator()(key);
return this->_impl.compute_hash(bytes, size);
}

template <typename Extent>
__device__ result_type compute_hash(cuda::std::byte const* bytes, Extent size) const
private:
template <typename T>
__device__ constexpr result_type compute(T const& key) const
{
return cuco::xxhash_64<Key>::compute_hash(bytes, size);
return this->compute_bytes(reinterpret_cast<cuda::std::byte const*>(&key), sizeof(T));
}

cuco::xxhash_64<Key> _impl;
};

template <>
XXHash_64<bool>::result_type __device__ inline XXHash_64<bool>::operator()(bool const& key) const
{
return this->compute_hash(reinterpret_cast<cuda::std::byte const*>(&key), sizeof(key));
return this->compute(static_cast<uint8_t>(key));
}

template <>
XXHash_64<float>::result_type __device__ inline XXHash_64<float>::operator()(float const& key) const
{
return cuco::xxhash_64<float>::operator()(normalize_nans(key));
return this->compute(normalize_nans(key));
}

template <>
XXHash_64<double>::result_type __device__ inline XXHash_64<double>::operator()(
double const& key) const
{
return cuco::xxhash_64<double>::operator()(normalize_nans(key));
return this->compute(normalize_nans(key));
}

template <>
XXHash_64<cudf::string_view>::result_type
__device__ inline XXHash_64<cudf::string_view>::operator()(cudf::string_view const& key) const
{
return this->compute_hash(reinterpret_cast<cuda::std::byte const*>(key.data()), key.size_bytes());
return this->compute_bytes(reinterpret_cast<cuda::std::byte const*>(key.data()),
key.size_bytes());
}

template <>
XXHash_64<numeric::decimal32>::result_type
__device__ inline XXHash_64<numeric::decimal32>::operator()(numeric::decimal32 const& key) const
{
auto const val = key.value();
auto const len = sizeof(val);
return this->compute_hash(reinterpret_cast<cuda::std::byte const*>(&val), len);
return this->compute(key.value());
}

template <>
XXHash_64<numeric::decimal64>::result_type
__device__ inline XXHash_64<numeric::decimal64>::operator()(numeric::decimal64 const& key) const
{
auto const val = key.value();
auto const len = sizeof(val);
return this->compute_hash(reinterpret_cast<cuda::std::byte const*>(&val), len);
return this->compute(key.value());
}

template <>
XXHash_64<numeric::decimal128>::result_type
__device__ inline XXHash_64<numeric::decimal128>::operator()(numeric::decimal128 const& key) const
{
auto const val = key.value();
auto const len = sizeof(val);
return this->compute_hash(reinterpret_cast<cuda::std::byte const*>(&val), len);
return this->compute(key.value());
}

} // namespace cudf::hashing::detail
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