[webkit-dev] webkit2 with v8

Balazs Kelemen kbalazs at webkit.org
Thu May 31 09:38:37 PDT 2012


I continued to work on this, more complete patches have been sent in 
https://bugs.webkit.org/show_bug.cgi?id=87872 and 
https://bugs.webkit.org/show_bug.cgi?id=84457. It's not because I don't 
understand your points, but it's better to debate on an actual patch 
that just theoretically :) I think most of what is needed in WebKit2 to 
support v8 is really just boilerplate code that should not change regularly.


On 04/24/2012 12:23 AM, Sam Weinig wrote:
> Without considerable more demand, I don't think we want this.
>
> -Sam
>
> On Apr 23, 2012, at 3:20 PM, Balazs Kelemen<kbalazs at webkit.org>  wrote:
>
>> On 04/23/2012 11:53 PM, Sam Weinig wrote:
>>> Hi Balazs,
>>>
>>> This is something we don't want at this time.  Dealing with V8 in WebCore is pretty big maintenance burden and one I would rather not have in WebKit2 unless there is considerable demand for it.
>> Well, it's important for Qt.
>>
>>> In your patch (attached to https://bugs.webkit.org/show_bug.cgi?id=84457), there are many intrusive changes to core WebKit2 code, making it harder to comprehend and refactor.
>>> Also, since a much bigger proportion of developers who develop WebKit2 don't ever compile V8, it seems more likely that the code will stop working.
>> The WIP patch I uploaded is just a very first step to make it possible to build with v8
>> without breaking the most basic features. I have just overhacked every problematic part
>> - instead of finding a proper solution to them - to see how many dependencies there are
>> on JSC as quickly as possible. It should be way better before uploaded for review.
>>
>>
>>> -Sam
>>>
>>> On Apr 23, 2012, at 3:28 AM, Balazs Kelemen<kbalazs at webkit.org>   wrote:
>>>
>>>> Hi everyone,
>>>>
>>>> I would like to inform you about the topic I am working on, since it is something
>>>> that can affect WebKit2 architecturally. I would like to make WebKit2 work with v8.
>>>> The motivation behind this is that the long term goal of the Qt port is to switch to v8.
>>>> Qt already use v8 in it's Qml module, and it's better to have only one VM in the framework
>>>> (less code size, less memory usage, easier maintenance).
>>>>
>>>> My goal is to achieve this with the minimal amount of changes made in WebKit2. My plan
>>>> for WebKitTestRunner is to wrap v8 behind the JavaScriptCore API (or, in another point of
>>>> view, implement the JSC API upon the v8 API). For the core of WebKit2 we will have to use
>>>> some bindings for things like plugins or the injected bundle but it should be not too much of
>>>> a maintenance burden.
>>>>
>>>> Inform me if you have any concerns or suggestion.
>>>>
>>>> Cheers!
>>>> Balazs Kelemen
>>>>
>>>>
>>>>
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