Bug 103212 – [Shadow] ShadowRoot should cache InsertionPoint list

• Component: DOM
• Status: RESOLVED FIXED

[Shinya Kawanaka]

When distributing, we're currently traversing all descendant nodes in ShadowDOM.
If we cache InsertionPoint List, we can skip a lot of traversal.

[Shinya Kawanaka]

Created attachment 175920 [details]
Patch

[Hajime Morrita]

Comment on attachment 175920 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=175920&action=review

> Source/WebCore/dom/ShadowRoot.h:106
> +    bool hasValidDescendentInsertionPointList() const;

s/descendent/descendant/
I think it can be simply called insertionPoints or insertionPointList.

> Source/WebCore/dom/ShadowRoot.h:191
> +    ASSERT(hasValidDescendentInsertionPointList());

We can ensure() the list here considering that all call sites calls ensure() before calling this.

[Shinya Kawanaka]

Created attachment 175952 [details]
Patch

[Shinya Kawanaka]

Created attachment 175964 [details]
Patch

[Shinya Kawanaka]

Comment on attachment 175964 [details]
Patch

This patch cannot be applied to ToT. We have to resolve Bug 103481 at first.

[Dimitri Glazkov (Google)]

Comment on attachment 175964 [details]
Patch

This is great!

[Shinya Kawanaka]

Created attachment 176630 [details]
Patch

[Hajime Morrita]

Comment on attachment 176630 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=176630&action=review

If you have a microbenchmark for this change, let's commit them first and mention its improvement on the ChangeLog.
It would be good for the record.

> Source/WebCore/dom/ShadowRoot.cpp:320
> +    distributionData()->setInsertionPointListValidity(true);

Let's move the implementation to  DistributionData.

> Source/WebCore/dom/ShadowRoot.cpp:350
> +    distributionData()->clearInsertionPointList();

Ditto.

[Shinya Kawanaka]

Created attachment 176637 [details]
Patch

[Shinya Kawanaka]

(In reply to comment #8)
> (From update of attachment 176630 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=176630&action=review
> 
> If you have a microbenchmark for this change, let's commit them first and mention its improvement on the ChangeLog.
> It would be good for the record.
> 
> > Source/WebCore/dom/ShadowRoot.cpp:320
> > +    distributionData()->setInsertionPointListValidity(true);
> 
> Let's move the implementation to  DistributionData.
> 
> > Source/WebCore/dom/ShadowRoot.cpp:350
> > +    distributionData()->clearInsertionPointList();
> 
> Ditto.

Done.

[Hajime Morrita]

Comment on attachment 176637 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=176637&action=review

> Source/WebCore/dom/ShadowRoot.cpp:354
> +    invalidateInsertionPointList();

These invalidateInsretionPointList() calls also can be in DistributionData

> Source/WebCore/dom/ShadowRoot.h:133
> +    void ensureValidInsertionPointList();

Then we can kill this.

[WebKit Review Bot]

Comment on attachment 176637 [details]
Patch

Attachment 176637 [details] did not pass chromium-ews (chromium-xvfb):
Output: http://queues.webkit.org/results/15018708

[Early Warning System Bot]

Comment on attachment 176637 [details]
Patch

Attachment 176637 [details] did not pass qt-ews (qt):
Output: http://queues.webkit.org/results/15015715

[Early Warning System Bot]

Comment on attachment 176637 [details]
Patch

Attachment 176637 [details] did not pass qt-wk2-ews (qt):
Output: http://queues.webkit.org/results/15027676

[Build Bot]

Comment on attachment 176637 [details]
Patch

Attachment 176637 [details] did not pass mac-ews (mac):
Output: http://queues.webkit.org/results/15015719

[Shinya Kawanaka]

Created attachment 176645 [details]
Patch for landing

[WebKit Review Bot]

Comment on attachment 176645 [details]
Patch for landing

Clearing flags on attachment: 176645

Committed r136098: <http://trac.webkit.org/changeset/136098>

[WebKit Review Bot]

All reviewed patches have been landed.  Closing bug.