Re: backend hangs at immediate shutdown - Mailing list pgsql-hackers

From Tatsuo Ishii
Subject Re: backend hangs at immediate shutdown
Date
Msg-id 20130131.094012.1648998302965458635.t-ishii@sraoss.co.jp
Whole thread Raw
In response to Re: backend hangs at immediate shutdown  (Andres Freund <andres@2ndquadrant.com>)
List pgsql-hackers
>> What about adding a caution to the doc something like:
>> 
>>      "pg_ctl -m -i stop" may cause a PostgreSQL hang if native laguage support enabled.
> 
> That doesn't entirely solve the problem, see quote and reply in
> 6845.1359561252@sss.pgh.pa.us

Oh, I see now.

> I think adding errmsg_raw() or somesuch that doesn't allocate any memory
> and only accepts constant strings could solve the problem more
> completely, at the obvious price of not allowing translated strings
> directly.
> Those could be pretranslated during startup, but thats mighty ugly.

Are you suggesting to call errmsg_raw() instead of errmsg() in quickdie()?

Tom said:
> That would reduce our exposure slightly, but hardly to zero.  For
> instance, if SIGQUIT happened in the midst of handling a regular error,
> ErrorContext might be pretty full already, necessitating further malloc
> requests.

If I understand this correctly, I don't think errmsg_raw()
solves the particular problem.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp



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