[webkit-reviews] review granted: [Bug 21970] Make MessagePort event dispatch work in workers : [Attachment 24772] updated patch

[bugzilla-daemon at webkit.org]

Darin Adler <darin at apple.com> has granted Alexey Proskuryakov <ap at webkit.org>'s
request for review:
Bug 21970: Make MessagePort event dispatch work in workers
https://bugs.webkit.org/show_bug.cgi?id=21970

Attachment 24772: updated patch
https://bugs.webkit.org/attachment.cgi?id=24772&action=edit

------- Additional Comments from Darin Adler <darin at apple.com>
> +JSDOMGlobalObject::JSDOMGlobalObjectData::JSDOMGlobalObjectData()
> +    : evt(0)

In practice, this "current event" could, and maybe should, be per-thread data,
not per-global object data. It's set on entry and then cleared on exit by the
code that dispatches events.

> +JSDOMGlobalObject::~JSDOMGlobalObject()
> +{
> +    // Clear any backpointers to the window
> +    ListenersMap::iterator i2 = d()->jsEventListeners.begin();
> +    ListenersMap::iterator e2 = d()->jsEventListeners.end();

A little strange that 2 comes before 1 in this function; but I guess that was
copied and pasted from elsewhere.

>  void JSDOMWindowBase::clearHelperObjectProperties()
>  {
> -    d()->evt = 0;
> +    setCurrentEvent(0);
>  }

I believe this function is unnecessary. I'm not insisting that you remove it,
but I believe that it's doing no good at all.

> Index: WebCore/dom/Document.h
> ===================================================================
> --- WebCore/dom/Document.h	(revision 37996)
> +++ WebCore/dom/Document.h	(working copy)
> @@ -410,7 +410,7 @@ public:
>  
>      bool wellFormed() const { return m_wellFormed; }
>  
> -    const KURL& url() const { return m_url; }
> +    virtual const KURL& url() const ;

Extra space before the semicolon.

It could be bad for performance to make Document::url() virtual just because
ScriptExecutionContext::url() needs to be. Maybe you should consider the style
I used for Node::localName() and Element::localName() that allows the latter to
be a non-virtual function?

I guess it's premature optimization to assume that it's going to be a
performance problem, but it does worry me a bit.

r=me