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_mut...@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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