From: | Jay Flattery <jaycode(at)rocketmail(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: fork() and dynamically loaded c functions.... |
Date: | 2010-08-10 23:29:08 |
Message-ID: | 228368.49208.qm@web120109.mail.ne1.yahoo.com |
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Thread: | |
Lists: | pgsql-general |
Thanks for your reply
>> I now fork() a process in _PG_Init() (both processes interact), but when I
>> shutdown postgre I get: LOG: failed to find proc 0x1331110 in ProcArray
>What exactly is that child process doing? It sure sounds like it thinks
>it's a valid backend.
Actually it's not doing anything, as I'm just trying to work it all out - just a
bunch of printfs and waits.
But the library is a PG_MAGIC_MODULE.
I tried killing it with pg_terminate_backend(pid) - but I get WARNING: PID
1166738497 is not a PostgreSQL server process. (Interestingly the child
pid=28629, which was printed in the line before)
>You can fork something if you like, but it had absolutely better not
>touch any part of shared memory afterwards.
Sure - it is intended to run independently.
Is there an internal pfork() or something similar I should use instead?
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