| From: | Alvaro Herrera <alvherre(at)dcc(dot)uchile(dot)cl> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Patches <pgsql-patches(at)postgresql(dot)org> |
| Subject: | Re: LockObject patch |
| Date: | 2004-12-20 20:55:44 |
| Message-ID: | 20041220205544.GB5287@dcc.uchile.cl |
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| Lists: | pgsql-patches |
On Mon, Dec 20, 2004 at 03:52:57PM -0500, Bruce Momjian wrote:
> When we roll over OID's do we make sure we never return InvalidOid?
Yes. From GetNewObjectId()
/*
* Check for wraparound of the OID counter. We *must* not return 0
* (InvalidOid); and as long as we have to check that, it seems a good
* idea to skip over everything below BootstrapObjectIdData too. (This
* basically just reduces the odds of OID collision right after a wrap
* occurs.) Note we are relying on unsigned comparison here.
*/
--
Alvaro Herrera (<alvherre[(at)]dcc(dot)uchile(dot)cl>)
"Es filósofo el que disfruta con los enigmas" (G. Coli)
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