| From: | Nathan Bossart <nathan(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Teach convert() and friends to avoid copying when possible. |
| Date: | 2023-12-04 17:56:24 |
| Message-ID: | E1rADBA-008a36-H7@gemulon.postgresql.org |
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| Thread: | |
| Lists: | pgsql-committers |
Teach convert() and friends to avoid copying when possible.
Presently, pg_convert() allocates a new bytea and copies the result
regardless of whether any conversion actually happened. This
commit adjusts this function to return the source pointer as-is if
no conversion occurred. This optimization isn't expected to make a
tremendous difference, but it still seems worthwhile to avoid
unnecessary memory allocations.
Author: Yurii Rashkovskii
Reviewed-by: Bertrand Drouvot
Discussion: https://postgr.es/m/CA%2BRLCQyknBPSWXRBQGOi6aYEcdQ9RpH9Kch4GjoeY8dQ3D%2Bvhw%40mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/b14b1eb4da4c97afec24cf8956e842b98ebb2a51
Modified Files
--------------
src/backend/utils/mb/mbutils.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
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