From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | "Mikheev, Vadim" <vmikheev(at)SECTORBASE(dot)COM> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Deadlock condition in current sources |
Date: | 2001-12-18 19:05:43 |
Message-ID: | 17571.1008702343@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
"Mikheev, Vadim" <vmikheev(at)SECTORBASE(dot)COM> writes:
> Checkpoint' undo is not used currently so just comment out GetUndoRecPtr
> call in CreateCheckPoint - we'll find solution later.
I thought about that, but figured you'd object ;-)
One possibility is to do something you had recommended awhile back for
other reasons: add a spinlock to each PROC structure and use the
spinlock, rather than SInvalLock, to protect setting and reading of
xmin, logRec, and related fields. I haven't finished working out all
the details, though, and this seems like a rather large change to make
at this late stage of beta. Comments?
regards, tom lane
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