Re: Patch to warn about oid/xid wraparound

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Lamar Owen <lamar(dot)owen(at)wgcr(dot)org>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Patch to warn about oid/xid wraparound
Date: 2001-06-13 20:35:26
Message-ID: Pine.LNX.4.30.0106132231390.756-100000@peter.localdomain
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Bruce Momjian writes:

> Here is an new patch that updates the percentage display when it is run,
> rather than just displaying 75%. I had to do the computation using
> floats to prevent overflow.

You could use ldiv().

Also, UINT_MAX (for transaction id) and OID_MAX (for Oid) might be
preferred over ~0.

Btw., there is a typo here:

> GetCurrentTransactionId() - (float)(~(TransactionId)0) * 100);

--
Peter Eisentraut peter_e(at)gmx(dot)net http://funkturm.homeip.net/~peter

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