From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
Subject: | pgsql: Make some minor improvements in memory-context infrastructure. |
Date: | 2022-10-14 16:36:28 |
Message-ID: | E1ojNff-002MLu-Mh@gemulon.postgresql.org |
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Lists: | pgsql-committers |
Make some minor improvements in memory-context infrastructure.
We lack a version of repalloc() that supports MCXT_ALLOC_NO_OOM
semantics, so invent repalloc_extended() with the usual set of
flags. repalloc_huge() becomes a legacy wrapper for that.
Also, fix dynahash.c so that it can support HASH_ENTER_NULL
requests when using the default palloc-based allocator.
The only reason it didn't do that already was the lack of the
MCXT_ALLOC_NO_OOM option when that code was written, ages ago.
While here, simplify a few overcomplicated tests in mcxt.c.
Discussion: https://postgr.es/m/2982579.1662416866@sss.pgh.pa.us
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/9c911ec065df0f660e3add65d986f95928914375
Modified Files
--------------
src/backend/utils/hash/dynahash.c | 13 ++----
src/backend/utils/mmgr/mcxt.c | 83 +++++++++++++++++++++++----------------
src/include/utils/palloc.h | 2 +
3 files changed, 56 insertions(+), 42 deletions(-)
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