Re: CIC and deadlocks

Tom Lane wrote:> "Pavan Deolasee" <pavan.deolasee@gmail.com> writes:>> Good point.  I'm envisioning a procarray.c
functionalong the> lines of>     bool TransactionHasSnapshot(xid)> which returns true if the xid is currently listed in
PGPROC>and has a nonzero xmin.  CIC's cleanup wait loop would check> this and ignore the xid if it returns false.  Your
pointmeans> that this function would have to take exclusive not shared lock> while scanning the procarray, which is
kindof annoying, but> it seems not fatal since CIC isn't done all that frequently.>
 

Tom,

If you haven't finished this yet, would you like me to work
on this ? If I do it, I would mostly follow the path you
suggested above, unless I run into something else.

Thanks,
Pavan

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