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Removed distance from neighbor tuples

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This commit is contained in:
Andrew Kane
2023-08-08 18:11:11 -07:00
parent 51d292c93d
commit c17d51588a
4 changed files with 39 additions and 51 deletions
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13
src/hnsw.h
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@@ -49,7 +49,7 @@
#define PROGRESS_HNSW_PHASE_LOAD 2
#define HNSW_ELEMENT_TUPLE_SIZE(_dim) MAXALIGN(offsetof(HnswElementTupleData, vec) + VECTOR_SIZE(_dim))
#define HNSW_NEIGHBOR_TUPLE_SIZE(level, m) MAXALIGN(offsetof(HnswNeighborTupleData, neighbors) + ((level) + 2) * (m) * sizeof(HnswNeighborTupleItem))
#define HNSW_NEIGHBOR_TUPLE_SIZE(level, m) MAXALIGN(offsetof(HnswNeighborTupleData, indextids) + ((level) + 2) * (m) * sizeof(ItemPointerData))
#define HnswPageGetOpaque(page) ((HnswPageOpaque) PageGetSpecialPointer(page))
#define HnswPageGetMeta(page) ((HnswMetaPageData *) PageGetContents(page))
@@ -197,19 +197,12 @@ typedef struct HnswElementTupleData
typedef HnswElementTupleData * HnswElementTuple;
typedef struct HnswNeighborTupleItem
{
ItemPointerData indextid;
uint16 unused;
float distance; /* improves performance of inserts */
} HnswNeighborTupleItem;
typedef struct HnswNeighborTupleData
{
uint8 type;
uint8 unused;
uint16 count;
HnswNeighborTupleItem neighbors[FLEXIBLE_ARRAY_MEMBER];
ItemPointerData indextids[FLEXIBLE_ARRAY_MEMBER];
} HnswNeighborTupleData;
typedef HnswNeighborTupleData * HnswNeighborTuple;
@@ -296,6 +289,6 @@ bool hnswgettuple(IndexScanDesc scan, ScanDirection dir);
void hnswendscan(IndexScanDesc scan);
/* Ensure fits in uint8 */
#define HnswGetMaxLevel(m) Min(((BLCKSZ - MAXALIGN(SizeOfPageHeaderData) - MAXALIGN(sizeof(HnswPageOpaqueData)) - offsetof(HnswNeighborTupleData, neighbors) - sizeof(ItemIdData)) / (sizeof(HnswNeighborTupleItem)) / m) - 2, 255)
#define HnswGetMaxLevel(m) Min(((BLCKSZ - MAXALIGN(SizeOfPageHeaderData) - MAXALIGN(sizeof(HnswPageOpaqueData)) - offsetof(HnswNeighborTupleData, indextids) - sizeof(ItemIdData)) / (sizeof(ItemPointerData)) / m) - 2, 255)
#endif