JoinHashImpl.h File Reference

#include <cstdint>
#include "../Shared/funcannotations.h"
#include "../Shared/shard_key.h"

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Functions
ALWAYS_INLINE DEVICE int32_t *SUFFIX()	get_bucketized_hash_slot (int32_t *buff, const int64_t key, const int64_t min_key, const int64_t bucket_normalization)
ALWAYS_INLINE DEVICE int32_t *SUFFIX()	get_hash_slot (int32_t *buff, const int64_t key, const int64_t min_key)
ALWAYS_INLINE DEVICE int32_t *SUFFIX()	get_bucketized_hash_slot_sharded (int32_t *buff, const int64_t key, const int64_t min_key, const uint32_t entry_count_per_shard, const uint32_t num_shards, const uint32_t device_count, const int64_t bucket_normalization)
ALWAYS_INLINE DEVICE int32_t *SUFFIX()	get_hash_slot_sharded (int32_t *buff, const int64_t key, const int64_t min_key, const uint32_t entry_count_per_shard, const uint32_t num_shards, const uint32_t device_count)

Function Documentation

get_bucketized_hash_slot()

ALWAYS_INLINE DEVICE int32_t* SUFFIX() get_bucketized_hash_slot	(	int32_t *	buff,
		const int64_t	key,
		const int64_t	min_key,
		const int64_t	bucket_normalization
	)

Definition at line 31 of file JoinHashImpl.h.

Referenced by bucketized_hash_join_idx(), count_matches_bucketized(), fill_hash_join_buff_bucketized(), and fill_row_ids_bucketized().

                                        {
  return buff + (key - min_key) / bucket_normalization;
}

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get_bucketized_hash_slot_sharded()

ALWAYS_INLINE DEVICE int32_t* SUFFIX() get_bucketized_hash_slot_sharded	(	int32_t *	buff,
		const int64_t	key,
		const int64_t	min_key,
		const uint32_t	entry_count_per_shard,
		const uint32_t	num_shards,
		const uint32_t	device_count,
		const int64_t	bucket_normalization
	)

Definition at line 45 of file JoinHashImpl.h.

References SHARD_FOR_KEY.

Referenced by fill_hash_join_buff_sharded_bucketized(), and fill_row_ids_sharded_bucketized().

                                        {
  const uint32_t shard = SHARD_FOR_KEY(key, num_shards);
  const uint32_t shard_buffer_index =
      shard / device_count;  // shard sub-buffer index within `buff`
  int32_t* shard_buffer = buff + shard_buffer_index * entry_count_per_shard;
  return shard_buffer + (key - min_key) / bucket_normalization / num_shards;
}

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get_hash_slot()

ALWAYS_INLINE DEVICE int32_t* SUFFIX() get_hash_slot	(	int32_t *	buff,
		const int64_t	key,
		const int64_t	min_key
	)

Definition at line 39 of file JoinHashImpl.h.

Referenced by count_matches(), fill_hash_join_buff(), fill_row_ids(), and hash_join_idx().

                                                                                      {
  return buff + (key - min_key);
}

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get_hash_slot_sharded()

ALWAYS_INLINE DEVICE int32_t* SUFFIX() get_hash_slot_sharded	(	int32_t *	buff,
		const int64_t	key,
		const int64_t	min_key,
		const uint32_t	entry_count_per_shard,
		const uint32_t	num_shards,
		const uint32_t	device_count
	)

Definition at line 60 of file JoinHashImpl.h.

References SHARD_FOR_KEY.

Referenced by count_matches_sharded(), fill_hash_join_buff_sharded(), fill_row_ids_sharded(), and hash_join_idx_sharded().

                                 {
  const uint32_t shard = SHARD_FOR_KEY(key, num_shards);
  const uint32_t shard_buffer_index =
      shard / device_count;  // shard sub-buffer index within `buff`
  int32_t* shard_buffer = buff + shard_buffer_index * entry_count_per_shard;
  return shard_buffer + (key - min_key) / num_shards;
}

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