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In-Reply-To: <9653428e-643a-cfb1-4966-c1f32db2ab0e@birkholz.biz>
Date: Mon, 1 Jun 2020 18:52:58 +0100
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To: Dennis Birkholz <php@dennis.birkholz.biz>
Cc: internals@lists.php.net
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Subject: Re: [PHP-DEV] RFC proposal: fsync support for file resources
From: davidgebler@gmail.com (David Gebler)

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No, fflush will flush the PHP application buffers out to the operating
system, it does in contrast to fsync not provide a guarantee the operating
system will immediately persist to the underlying storage device.

On Mon, 1 Jun 2020, 18:49 Dennis Birkholz, <php@dennis.birkholz.biz> wrote:

> Hello David,
>
> isn't fflush exactly this:
> https://www.php.net/manual/en/function.fflush.php
>
> Greets
> Dennis
>
> Am 01.06.20 um 18:56 schrieb David Gebler:
> > Exactly as the subject says, I would like to propose an RFC for adding an
> > fsync() function for file resources, which would in essence be a thin
> > wrapper around C's fsync on UNIX systems and _commit on Windows.
> >
> > It seems to me an odd oversight that this has never been implemented in
> PHP
> > and means PHP has no way to perform durable file write operations, making
> > it inherently unsuitable for any systems requiring more intensive I/O,
> > mission critical logs, auditing, etc.
> >
> > I am not really a C programmer and I have been able to implement a simple
> > working prototype of this as a compiled extension in merely a few hours,
> so
> > I'm sure it wouldn't be difficult to bring in to the language core where
> > the functionality really belongs.
> >
> > Every other major programming language otherwise comparable to PHP in
> > features supports a way of providing durability.
> >
> > Thanks.
> >
>
>

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