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Use the sortsupport infrastructure in more cases.

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This removes some fmgr overhead from cases such as btree index builds.

Peter Geoghegan, reviewed by Andreas Karlsson and me.
This commit is contained in:
Robert Haas
2014-11-07 15:50:09 -05:00
parent 99e8f08fab
commit 5ea86e6e65
4 changed files with 205 additions and 213 deletions
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3
src/include/utils/sortsupport.h
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@@ -48,6 +48,7 @@
#define SORTSUPPORT_H
#include "access/attnum.h"
#include "utils/relcache.h"
typedef struct SortSupportData *SortSupport;
@@ -152,5 +153,7 @@ ApplySortComparator(Datum datum1, bool isNull1,
/* Other functions in utils/sort/sortsupport.c */
extern void PrepareSortSupportComparisonShim(Oid cmpFunc, SortSupport ssup);
extern void PrepareSortSupportFromOrderingOp(Oid orderingOp, SortSupport ssup);
extern void PrepareSortSupportFromIndexRel(Relation indexRel, int16 strategy,
SortSupport ssup);
#endif /* SORTSUPPORT_H */