Bug 141572

Summary: RenderListItem resets its marker's style on style change even if the diff is StyleDifferenceEqual
Product: WebKit Reporter: Chris Dumez <cdumez>
Component: Layout and RenderingAssignee: Chris Dumez <cdumez>
Status: RESOLVED FIXED    
Severity: Normal CC: commit-queue, esprehn+autocc, glenn, hyatt, kondapallykalyan, simon.fraser
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
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Description Chris Dumez 2015-02-13 12:13:41 PST 
RenderListItem resets its marker's style on style change even if the diff is StyleDifferenceEqual.

This causes high cpu usage on http://www.nokogiri.org/tutorials/searching_a_xml_html_document.html because there is an animation that changes the style every second and the RenderListItem keeps resetting its marker's margin, which triggers a layout and the RenderListMarker re-computes its margin during layout and updates its style again.

Radar: rdar://problem/19759818
Comment 1 Chris Dumez 2015-02-13 12:27:11 PST 
Created attachment 246540 [details]
Patch
Comment 2 Chris Dumez 2015-02-13 15:35:30 PST 
Created attachment 246553 [details]
Patch
Comment 3 Chris Dumez 2015-02-13 15:52:21 PST 
Created attachment 246554 [details]
Patch
Comment 4 WebKit Commit Bot 2015-02-13 16:37:48 PST 
Comment on attachment 246554 [details]
Patch

Clearing flags on attachment: 246554

Committed r180090: <http://trac.webkit.org/changeset/180090>
Comment 5 WebKit Commit Bot 2015-02-13 16:37:54 PST 
All reviewed patches have been landed.  Closing bug.