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Use new overflow-safe integer comparison functions.

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Commit 6b80394781 introduced integer comparison functions designed
to be as efficient as possible while avoiding overflow.  This
commit makes use of these functions in many of the in-tree qsort()
comparators to help ensure transitivity.  Many of these comparator
functions should also see a small performance boost.

Author: Mats Kindahl
Reviewed-by: Andres Freund, Fabrízio de Royes Mello
Discussion: https://postgr.es/m/CA%2B14426g2Wa9QuUpmakwPxXFWG_1FaY0AsApkvcTBy-YfS6uaw%40mail.gmail.com
This commit is contained in:
Nathan Bossart
2024-02-16 14:05:36 -06:00
parent 6b80394781
commit 3b42bdb471
34 changed files with 80 additions and 159 deletions
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8
src/backend/backup/basebackup_incremental.c
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@ -27,6 +27,7 @@
#include "common/blkreftable.h"
#include "common/parse_manifest.h"
#include "common/hashfn.h"
#include "common/int.h"
#include "postmaster/walsummarizer.h"
#define BLOCKS_PER_READ 512
@ -994,10 +995,5 @@ compare_block_numbers(const void *a, const void *b)
BlockNumber aa = *(BlockNumber *) a;
BlockNumber bb = *(BlockNumber *) b;
if (aa > bb)
return 1;
else if (aa == bb)
return 0;
else
return -1;
return pg_cmp_u32(aa, bb);
}