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Date: Fri, 2 Mar 2012 15:21:18 +0100
Message-ID: <CAMUwpuRaWNv3fsBcHyO9PTHba7dRT01-zUC42ZYecw1Ap6UQ5g@mail.gmail.com>
To: Adi Mutu <adi_mutu06@yahoo.com>
Cc: "internals@lists.php.net" <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=f46d04463132a3ca6a04ba434c9e
Subject: Re: [PHP-DEV] ZEND_MM_SMALL_FREE_BUCKET and ZEND_MM_REST_BUCKET
From: jpauli@php.net (jpauli)

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On Fri, Mar 2, 2012 at 2:57 PM, Adi Mutu <adi_mutu06@yahoo.com> wrote:

>
>
> Thanks Julien,
>
> but i've already read your article using translator and did not found an
> answer to that (i've also sent you an email about Zend mm a few days ago)
>

Not seen that.

Anyway, I dont master all ZendMM stuff, I couldn't explain every line of
code. It's been mainly designed back in 2005, I wasn't here yet :)

It's not very hard to guess what it does, if you know how a memory manager
works. Basically, it does stuff that malloc() does internally, stuff
explained here, for example (
http://www.phrack.org/issues.html?issue=57&id=9#article) ; but for PHP
needs, and with multi-platform in mind.

Julien.P


> laurence site looks down to me. Perhaps the link is wrong?
>
> Thanks,
> A.
>
>
> ________________________________
>  From: jpauli <jpauli@php.net>
> To: Adi Mutu <adi_mutu06@yahoo.com>
> Cc: "internals@lists.php.net" <internals@lists.php.net>
> Sent: Friday, March 2, 2012 3:43 PM
> Subject: Re: [PHP-DEV] ZEND_MM_SMALL_FREE_BUCKET and ZEND_MM_REST_BUCKET
>
> Laruence and I wrote articles about ZendMM internals.
>
> You would find them at http://www.laruence.com/2011/11/09/2277.html and
>
> http://julien-pauli.developpez.com/tutoriels/php/internals/zend-memory-manager/
> .
> You can use any translator to get them in English
>
> For basic use, see the readme at
> http://lxr.php.net/xref/PHP_5_4/Zend/README.ZEND_MM
>
> Hope this helps :)
>
> Julien.P
>
> On Fri, Mar 2, 2012 at 1:51 PM, Adi Mutu <adi_mutu06@yahoo.com> wrote:
>
> >
> >
> > Hello,
> >
> > Can somebody shed some light on these 2 defines? Thanks.
> >
> >
> > #define ZEND_MM_SMALL_FREE_BUCKET(heap, index) \ (zend_mm_free_block*)
> > ((char*)&heap->free_buckets[index * 2] + \
>  sizeof(zend_mm_free_block*)
> > * 2 - \      sizeof(zend_mm_small_free_block))      #define
> > ZEND_MM_REST_BUCKET(heap) \
> > (zend_mm_free_block*)((char*)&heap->rest_buckets[0] + \
> > sizeof(zend_mm_free_block*) * 2 - \
> sizeof(zend_mm_small_free_block))
>

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