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Date: Mon, 11 Mar 2013 10:35:04 +0400
Message-ID: <CA+9eiLuV_af9wAS_1zd_NYw=NXo1kJs990s5+bb_ZQ6h8=yW4Q@mail.gmail.com>
To: Nikita Popov <nikita.ppv@gmail.com>
Cc: PHP internals <internals@lists.php.net>, Zeev Suraski <zeev@zend.com>, Andi Gutmans <andi@zend.com>
Content-Type: multipart/alternative; boundary=f46d0444e8358f150004d7a05f71
Subject: Re: [PHP-DEV] Re: [VOTE] Allow non-scalar keys in foreach
From: dmitry@zend.com (Dmitry Stogov)

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Hi Nikita,

Thanks. I'll review it today.

Dmitry.

On Sun, Mar 10, 2013 at 1:47 AM, Nikita Popov <nikita.ppv@gmail.com> wrote:

> On Wed, Mar 6, 2013 at 6:28 PM, Dmitry Stogov <dmitry@zend.com> wrote:
>
>>
>>> I wonder what would be a good way to avoid allocating a temporary zval
>>> for the key and freeing it again. Do you think it would be okay to pass
>>> &EX_T((opline+1)->result.var).tmp_var into ->get_current_key() so the value
>>> can be written directly into it without doing extra allocs/frees?
>>>
>>>
>> I'm not sure it'll work. TMP_VARs don't initialize refcount, they can't
>> be referenced or marked as a possible root of garbage.
>> I took only a very quick look over the patch and didn't understand all
>> the details, but probably it must be possible to copy iterator key into
>> TMP_VAR
>> and call copy_ctor().
>>
>> Please, let me review the patch when it's ready (I won't be available on
>> March 8 and weekend).
>>
>> Thanks. Dmitry.
>>
>
> Here is the new patch:
> https://github.com/nikic/php-src/commit/a1bfc8105713eeb4e66e852b81884b567ad56020
> It passes in the tmp_var in as a zval*, which can then be set using the
> ZVAL_* macros (basically the same way as it's done with return_value). This
> way we don't need any further zval allocs and frees. It also turned out
> that doing it this way is more convenient to use in the respective key
> handlers.
>
> Nikita
>

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