Re: Cause of "can't wait without a PROC structure"

Tom Lane wrote:
> I said:
> > The ordering of these shutdown hooks is the reverse of the ordering
> > of the startup initialization of the modules. It looks like we'll
> > need to rejigger the startup ordering ... and it also looks like that's
> > going to be a rather ticklish issue. (See comments in BaseInit and
> > InitPostgres.) Any thoughts on how to do it?
>
> I eventually decided that the most reasonable solution was to leave the
> startup sequence alone, and fold the ProcKill and
> ShutdownBufferPoolAccess shutdown hooks together. This is a little ugly
> but it seems to beat the alternatives. ShutdownBufferPoolAccess was
> effectively assuming that LWLockReleaseAll was called just before it,
> so the two modules aren't really independent anyway.

I understand. Sometimes the dependencies are too intricate to break
apart, and you just reorder them.

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