From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Dale Anderson <danderso(at)crystalsugar(dot)com>, pgsql-general(at)postgreSQL(dot)org |
Subject: | Re: Table locks |
Date: | 2000-10-09 18:47:33 |
Message-ID: | 200010091847.OAA02137@candle.pha.pa.us |
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Lists: | pgsql-general |
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > No spinlock. I was going to just grab a snapshot as it existed. If it
> > changes while I am grabbing it, I just try again.
>
> Unless, of course, you follow a now-dangling pointer and cause a backend
> crash. But even without that, how do you know whether you grabbed a
> self-consistent snapshot or not?
Not sure, yet...
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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