| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Lucas Fairchild-Madar <lucas(dot)madar(at)gmail(dot)com>, pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: json(b)_array_elements use causes very large memory usage when also referencing entire json document |
| Date: | 2017-10-07 02:35:37 |
| Message-ID: | 7739.1507343737@sss.pgh.pa.us |
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| Lists: | pgsql-bugs |
Andres Freund <andres(at)anarazel(dot)de> writes:
> I've just played around with this. ValuePerCall SRFs are fine with
> called in a short-lived context (they're required to be able to, as
> documented in xfunc.sgml), so is SFRM_Materialize. The only thing to be
> careful about is the *arguments* to the function, those need to live
> long enough in the ValuePerCall case.
Isn't there already code to deal with that? See around line 175
in execSRF.c.
regards, tom lane
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