| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> | 
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> | 
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> | 
| Subject: | Re: No AVworkers when PM_RECOVERY_CONSISTENT | 
| Date: | 2009-09-05 15:06:56 | 
| Message-ID: | 3500.1252163216@sss.pgh.pa.us | 
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| Lists: | pgsql-hackers | 
Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> When pmState == PM_RECOVERY_CONSISTENT we run
> SignalAutovacWorkers(SIGTERM);
> at normal shutdown
> This currently does nothing, but since there aren't ever going to be any
> AVworkers at this time we should be explicitly skipping this. That
> should avoid misunderstanding the code and avoid any future side
> effects.
The code is trying to signal every child that exists.  By that logic we
should have a lot more conditionals to try to avoid signaling process
that "shouldn't" exist in the current PM state --- eg, the following
line where the AV launcher is signaled.  I don't think it's going to
be an improvement in either readability or robustness.
regards, tom lane
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