| commit | 6b80394781c8de17fe7cae6996476088af3c319f | |
| author | Nathan Bossart <nathan@postgresql.org> | |
| Fri, 16 Feb 2024 19:37:02 +0000 (16 13:37 -0600) | ||
| committer | Nathan Bossart <nathan@postgresql.org> | |
| Fri, 16 Feb 2024 19:37:02 +0000 (16 13:37 -0600) | ||
| tree | db7b1a619634980a469d0714ffc80f6e89ab2b39 | treesnapshot (tar.gz zip) |
| parent | 73f0a1326608ac3a7d390706fdeec59fe4dc42c0 | commitdiff |
Introduce overflow-safe integer comparison functions.
This commit adds integer comparison functions that are designed to
be as efficient as possible while avoiding overflow. A follow-up
commit will make use of these functions in many of the in-tree
qsort() comparators. The new functions are not better in all cases
(e.g., when the comparator function is inlined), so it is important
to consider the context before using them.
Author: Mats Kindahl
Reviewed-by: Tom Lane, Heikki Linnakangas, Andres Freund, Thomas Munro, Andrey Borodin, FabrÃzio de Royes Mello
Discussion: https://postgr.es/m/CA%2B14426g2Wa9QuUpmakwPxXFWG_1FaY0AsApkvcTBy-YfS6uaw%40mail.gmail.com
This commit adds integer comparison functions that are designed to
be as efficient as possible while avoiding overflow. A follow-up
commit will make use of these functions in many of the in-tree
qsort() comparators. The new functions are not better in all cases
(e.g., when the comparator function is inlined), so it is important
to consider the context before using them.
Author: Mats Kindahl
Reviewed-by: Tom Lane, Heikki Linnakangas, Andres Freund, Thomas Munro, Andrey Borodin, FabrÃzio de Royes Mello
Discussion: https://postgr.es/m/CA%2B14426g2Wa9QuUpmakwPxXFWG_1FaY0AsApkvcTBy-YfS6uaw%40mail.gmail.com
| src/include/common/int.h | diffblobblamehistory | |
| src/include/lib/sort_template.h | diffblobblamehistory |