Re: libpq object hooks

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От
Andrew Chernow
Тема
Re: libpq object hooks
Дата
в 23:34:36
Msg-id
482E443B.8080903@esilo.com
Ответ на
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Дерево обсуждения
libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Andrew Dunstan <andrew@dunslane.net>
Re: libpq object hooks Bruce Momjian <bruce@momjian.us>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Alvaro Herrera <alvherre@commandprompt.com>
Re: libpq object hooks Andrew Dunstan <andrew@dunslane.net>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks (libpq events) Andrew Chernow <ac@esilo.com>
Re: libpq object hooks (libpq events) Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks (libpq events) Andrew Chernow <ac@esilo.com>
Re: libpq object hooks (libpq events) Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks (libpq events) Andrew Chernow <ac@esilo.com>
Re: libpq object hooks (libpq events) Andrew Chernow <ac@esilo.com>
Re: libpq object hooks (libpq events) "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks (libpq events) "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks (libpq events) "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks (libpq events) Andrew Chernow <ac@esilo.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Dunstan <andrew@dunslane.net>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Chernow <ac@esilo.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Dunstan <andrew@dunslane.net>
Re: libpq object hooks Tom Lane <tgl@sss.pgh.pa.us>
Re: libpq object hooks Andrew Dunstan <andrew@dunslane.net>
Re: libpq object hooks Alvaro Herrera <alvherre@commandprompt.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks Bruce Momjian <bruce@momjian.us>
Re: libpq object hooks daveg <daveg@sonic.net>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Re: libpq object hooks "Merlin Moncure" <mmoncure@gmail.com>
Tom Lane wrote:
>  ISTM the hook
> ought to be able to request that libpq return an out-of-memory failure
> for the query, just as would happen if the malloc failure had happened
> directly to libpq.
> 
> 

I am working on this new patch and that is how I have been implementing it.  If 
the eventProc function returns FALSE for creation events (not destruction 
events), the libpq call that triggered it will fail.  For instance: for the 
creation of result objects "PGEVT_RESULTCREATE", I am clearing the result and 
returning an error value.

I think that is the expected behavior when one calls PQexec and an out-of-memory 
failure occurs.

-- 
Andrew Chernow
eSilo, LLC
every bit counts
http://www.esilo.com/
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