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Add support for easily declaring static inline functions

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We already had those, but they forced modules to spell out the function
bodies twice.  Eliminate some duplicates we had already grown.

Extracted from a somewhat larger patch from Andres Freund.
This commit is contained in:
Alvaro Herrera
2012-10-08 16:12:27 -03:00
parent 08c8058ce9
commit 976fa10d20
7 changed files with 59 additions and 117 deletions
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47
src/backend/utils/sort/sortsupport.c
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@@ -15,6 +15,9 @@
#include "postgres.h"
/* See sortsupport.h */
#define SORTSUPPORT_INCLUDE_DEFINITIONS
#include "fmgr.h"
#include "utils/lsyscache.h"
#include "utils/sortsupport.h"
@@ -28,50 +31,6 @@ typedef struct
} SortShimExtra;
/*
* sortsupport.h defines inline versions of these functions if allowed by the
* compiler; in which case the definitions below are skipped.
*/
#ifndef USE_INLINE
/*
* Apply a sort comparator function and return a 3-way comparison result.
* This takes care of handling reverse-sort and NULLs-ordering properly.
*/
int
ApplySortComparator(Datum datum1, bool isNull1,
Datum datum2, bool isNull2,
SortSupport ssup)
{
int compare;
if (isNull1)
{
if (isNull2)
compare = 0; /* NULL "=" NULL */
else if (ssup->ssup_nulls_first)
compare = -1; /* NULL "<" NOT_NULL */
else
compare = 1; /* NULL ">" NOT_NULL */
}
else if (isNull2)
{
if (ssup->ssup_nulls_first)
compare = 1; /* NOT_NULL ">" NULL */
else
compare = -1; /* NOT_NULL "<" NULL */
}
else
{
compare = (*ssup->comparator) (datum1, datum2, ssup);
if (ssup->ssup_reverse)
compare = -compare;
}
return compare;
}
#endif /* ! USE_INLINE */
/*
* Shim function for calling an old-style comparator
*