Re: PATCH: pageinspect / add page_checksum andbt_page_items(bytea) - Mailing list pgsql-hackers

On 3/23/17 11:27 PM, Peter Eisentraut wrote:
> On 3/17/17 18:35, Tomas Vondra wrote:
>> On 03/17/2017 05:23 PM, Peter Eisentraut wrote:
>>> I'm struggling to find a good way to share code between
>>> bt_page_items(text, int4) and bt_page_items(bytea).
>>>
>>> If we do it via the SQL route, as I had suggested, it makes the
>>> extension non-relocatable, and it will also create a bit of a mess
>>> during upgrades.
>>>
>>> If doing it in C, it will be a bit tricky to pass the SRF context
>>> around.  There is no "DirectFunctionCall within SRF context", AFAICT.
>>
>> Not sure what it has to do with DirectFunctionCall? You want to call the
>> bytea variant from the existing one? Wouldn't it be easier to simply
>> define a static function with the shared parts, and pass around the
>> fctx/fcinfo? Not quite pretty, but should work.
>
> Perhaps what was added in
> <http://git.postgresql.org/pg/commitdiff/29bf5016835a2c2c23786f7cda347716c083d95f>
> would actually work here.

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-- 
-David
david@pgmasters.net