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In-Reply-To: <CADyq6sLWz3rZaPCu-AZtCoKCQGC4SiJra66w+6cdeFvk58FJ_A@mail.gmail.com>
Date: Sun, 25 Nov 2018 23:34:28 +0200
Message-ID: <CAJHtznxQOnZZEhnXP-KY+iMSQ-0BBwWFhHaofU2+R+=ZxXx0VQ@mail.gmail.com>
To: Marco Pivetta <ocramius@gmail.com>
Cc: Internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [mini-RFC] Disable opcache per script using "declare(cache=0)"
From: vsuraski@gmail.com (Zeev Suraski)

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On Sun, Nov 25, 2018 at 7:03 AM Marco Pivetta <ocramius@gmail.com> wrote:

> Adding to the pile of "it's an edge case", since the preload scripts will
> be procedural, wouldn't it be sufficient to call
> `opcache_invalidate(__FILE__)` at the end of them?
>
> That would actually not do anything useful - as the file will (in all
likelihood) never be accessed again anyway.  Invalidating a file only
ensures it won't be fetched again from the opcache - it doesn't actually
free up the space it consumes.  Invalidate it or not, in both cases the
outcome is the same - a bit of memory consumed by a file that will never
again be fetched from the opcache.  I believe this is what Dmitry's
proposal was about - not putting the file into the opcache to begin with,
to save the bit of memory that it would otherwise consume (but I could be
wrong, as the savings are likely to be so small I'm not sure why we would
care about them...).

Zeev

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