From: Tom Lane <tgl@sss.pgh.pa.us>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Split some storage out to separate subcontexts of fcontext.
Date: Thu, 17 Apr 2025 16:57:47 +0000
Message-ID: <E1u5SYd-000Vjr-1h@gemulon.postgresql.org> (raw)
Split some storage out to separate subcontexts of fcontext.
Put the JunkFilter and its result slot (and thence also
some subsidiary data such as the result tupledesc) into a
separate subcontext "jfcontext". This doesn't accomplish
a lot at this point, because we make a new JunkFilter each
time through the SQL function. However, the plan is to make
the fcontext long-lived, and that raises the possibility
that we'll need a new JunkFilter because the plan for the
result-generating query changes. A separate context makes
it easy to free the obsoleted data when that happens.
Also, instead of always running the sub-executor in fcontext,
make a separate context for it if we're doing lazy eval of
a SRF, and otherwise just run it inside CurrentMemoryContext.
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/f45a5444ee7612bcca31172035c9638fed77afcc
Modified Files
--------------
src/backend/executor/functions.c | 82 ++++++++++++++++++++++++++++++++--------
1 file changed, 67 insertions(+), 15 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: tgl@sss.pgh.pa.us, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Split some storage out to separate subcontexts of fcontext.
In-Reply-To: <E1u5SYd-000Vjr-1h@gemulon.postgresql.org>
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