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Inline ginCompareItemPointers function for speed.

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ginCompareItemPointers function is called heavily in gin index scans -
inlining it speeds up some kind of queries a lot.
This commit is contained in:
Heikki Linnakangas
2013-06-29 12:54:02 +03:00
parent d51b271059
commit ee6556555b
2 changed files with 24 additions and 20 deletions
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19
src/backend/access/gin/gindatapage.c
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@@ -17,25 +17,6 @@
#include "access/gin_private.h"
#include "utils/rel.h"
int
ginCompareItemPointers(ItemPointer a, ItemPointer b)
{
BlockNumber ba = GinItemPointerGetBlockNumber(a);
BlockNumber bb = GinItemPointerGetBlockNumber(b);
if (ba == bb)
{
OffsetNumber oa = GinItemPointerGetOffsetNumber(a);
OffsetNumber ob = GinItemPointerGetOffsetNumber(b);
if (oa == ob)
return 0;
return (oa > ob) ? 1 : -1;
}
return (ba > bb) ? 1 : -1;
}
/*
* Merge two ordered arrays of itempointers, eliminating any duplicates.
* Returns the number of items in the result.