Re: libpq object hooks

On Fri, May 16, 2008 at 3:49 PM, Merlin Moncure <mmoncure(at)gmail(dot)com> wrote:
> On Fri, May 16, 2008 at 2:34 PM, Andrew Chernow <ac(at)esilo(dot)com> wrote:
>> Tom Lane wrote:
>>>
>>> typedef void (*PGeventProc) (PGeventId eventId, const void *eventInfo,
>>> void *passthrough);
>>>
>>> int PQregisterEventProc(PGconn *conn, PGeventProc proc, void
>>> *passthrough);
>
>> The above prototypes will work and we will add our 'event instance pointer'
>> to the event info structures. Should have a patch shortly.
>
>
> Right. I actually overlooked the 'passthrough' in
> PQregisterEventProc. It turns out that we are still not quite on the
> same page and this needs to be clarified before we move on. The
> passthrough cannot exist...the correct prototypes (reasoning will
> follow) are:
>
> typedef void (*PGeventProc) (PGeventId eventId, const void *eventInfo);

small typo: eventInfo obviously can't be const

> int PQregisterEventProc(PGconn *conn, PGeventProc proc);
> PQhookData(const PGconn* conn, PGeventProc proc);

PQhookData is the old name...we are going with 'events' now....the
proper names will come with the patch.

merlin