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Date: Mon, 28 Jul 2008 05:04:18 +0100
Sender: nunoplopes@gmail.com
To: "Dmitry Stogov" <dmitry@zend.com>
Cc: "Matt Wilmas" <php_lists@realplain.com>, internals@lists.php.net, 
	"Andi Gutmans" <andi@zend.com>, "Stanislav Malyshev" <stas@zend.com>
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Subject: Re: [PHP-DEV] New optimization idea; was: No runtime fetching of built-in global constants
From: nlopess@php.net ("Nuno Lopes")

I'm not Matt, but I'll try to answer :)

Actually the new re2c scanner already handles the shebang thing, so I
think you can safely remove the explicit support for it in CGI. We had
to had that because CLI doesn't explicitly support the shebang line.

Nuno

P.S.: now it makes sense why we never found the code in the flex
scanner that handled the shebang line :P


On Sun, Jul 27, 2008 at 11:56, Dmitry Stogov <dmitry@zend.com> wrote:
> Hi Matt,
>
> At first as you are a scanner expert, I would like you to look into another
> optimization idea.
>
> Probably for historical reason PHP supports shebang lines
> (#! /usr/bin/php) on top of php files. Especially to handle them PHP
> (CGI/FastCGI/CLI) opens file and check for it. So even with opcode caches
> FastCGI PHP does open syscall for the requested script, however with opcode
> caches it's absolutely useless.
>
> In case PHP scanner will handle shebang lines itself, we will able to save
> this syscall.
>
> I never had time and enough flex/re2c knowledge to implement this idea
> myself. May be you'll able to look into the problem. In case you find a
> simple solution we will able to do it in php-5.3.
>
> Most PHP hosters and large sites use FastCGI with opcode caches (it is also
> the primary way for MS Windows users), so this optimization is really
> important.