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Added HnswGetElementTupleSize method

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This commit is contained in:
Andrew Kane
2024-10-09 19:38:16 -07:00
parent 67f9a3e61c
commit 7a347bc2de
4 changed files with 27 additions and 2 deletions
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1
src/hnsw.h
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@@ -407,6 +407,7 @@ void HnswInitLockTranche(void);
const HnswTypeInfo *HnswGetTypeInfo(Relation index);
PGDLLEXPORT void HnswParallelBuildMain(dsm_segment *seg, shm_toc *toc);
void HnswInitProcinfo(FmgrInfo **procinfo, Oid **collation, Relation index);
Size HnswGetElementTupleSize(char *base, HnswElement element, bool useIndexTuple);
bool HnswIndexTupleIsEqual(IndexTuple a, IndexTuple b, TupleDesc tupdesc);
/* Index access methods */

2
src/hnswbuild.c
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@@ -176,7 +176,7 @@ CreateGraphPages(HnswBuildState * buildstate)
MemSet(etup, 0, HNSW_TUPLE_ALLOC_SIZE);
/* Calculate sizes */
etupSize = HNSW_ELEMENT_TUPLE_SIZE(useIndexTuple ? IndexTupleSize(HnswPtrAccess(base, element->itup)) : VARSIZE_ANY(HnswPtrAccess(base, element->value)));
etupSize = HnswGetElementTupleSize(base, element, useIndexTuple);
ntupSize = HNSW_NEIGHBOR_TUPLE_SIZE(element->level, buildstate->m);
combinedSize = etupSize + ntupSize + sizeof(ItemIdData);

2
src/hnswinsert.c
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@@ -157,7 +157,7 @@ AddElementOnDisk(Relation index, HnswElement e, int m, BlockNumber insertPage, B
bool useIndexTuple = HnswUseIndexTuple(index);
/* Calculate sizes */
etupSize = HNSW_ELEMENT_TUPLE_SIZE(useIndexTuple ? IndexTupleSize(HnswPtrAccess(base, e->itup)) : VARSIZE_ANY(HnswPtrAccess(base, e->value)));
etupSize = HnswGetElementTupleSize(base, e, useIndexTuple);
ntupSize = HNSW_NEIGHBOR_TUPLE_SIZE(e->level, m);
combinedSize = etupSize + ntupSize + sizeof(ItemIdData);
maxSize = HNSW_MAX_SIZE;

24
src/hnswutils.c
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@@ -167,6 +167,30 @@ HnswInitProcinfo(FmgrInfo **procinfo, Oid **collation, Relation index)
*collation = index->rd_indcollation;
}
/*
* Get element tuple size
*/
Size
HnswGetElementTupleSize(char *base, HnswElement element, bool useIndexTuple)
{
Size size;
if (useIndexTuple)
{
IndexTuple itup = HnswPtrAccess(base, element->itup);
size = IndexTupleSize(itup);
}
else
{
Pointer valuePtr = HnswPtrAccess(base, element->value);
size = VARSIZE_ANY(valuePtr);
}
return HNSW_ELEMENT_TUPLE_SIZE(size);
}
/*
* Normalize value
*/