Re: [HACKERS] Re: Nasty resource-leak problem in sort code]

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: geek+(at)cmu(dot)edu
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] Re: Nasty resource-leak problem in sort code]
Date: 1999-05-07 23:03:35
Message-ID: 199905072303.TAA14305@candle.pha.pa.us
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> Uhm, this all seems unnecessarily complicated. Shouldn't the process
> look more like this:
> fp = open('tempfile');
> unlink('tempfile');
>
> This way, when the file is closed, the space is freed. The only
> complication I can see is if backends need to share the file handle,
> or it needs to be re-opened. This works with all sorts of temp-file
> situations.
>
> Of course, it's not NT safe, since I don't believe that NT provides
> for deleting open files (NT file libs sucks.

Two problems. First, we support NT, so we have to behave a little bit
to keep it happy. Second, Tom is concerned about leaking file handles,
not just the files themselves. He needs to call close() to release them
on transaction aborts.

--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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