Re: Closing some 8.4 open items

From: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
To: Dave Page <dpage(at)pgadmin(dot)org>
Cc: Josh Berkus <josh(at)agliodbs(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Closing some 8.4 open items
Date: 2009-04-08 17:42:31
Message-ID: 49DCE207.9070806@enterprisedb.com
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Dave Page wrote:
> On Wednesday, April 8, 2009, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
>> Presumably fadvise is useless on Windows. Anyone know?
>
> It is.

cygwin supports POSIX_FADV_SEQUENTIAL (and POSIX_FADV_NORMAL to revert
it), but not any of the other flags. It maps it to
NtSetInformationFile() like this:

> if (advice == POSIX_FADV_SEQUENTIAL)
> fmi.Mode |= FILE_SEQUENTIAL_ONLY;
> status = NtSetInformationFile (get_handle (), &io, &fmi, sizeof fmi,
> FileModeInformation);

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com

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