[Webkit-unassigned] [Bug 261123] Performance improvement for the word boundary finding algorithm

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=261123

zalan <zalan at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Text                        |HTML Editing

--- Comment #3 from zalan <zalan at apple.com> ---
Looks like we spend some time in nextWordFromIndex:forward

32.79 s   82.2% 0 s                                       WebCore::jsDOMSelectionPrototypeFunction_modify(JSC::JSGlobalObject*, JSC::CallFrame*)
32.79 s   82.2% 0 s                                        WebCore::DOMSelection::modify(WTF::String const&, WTF::String const&, WTF::String const&)
32.79 s   82.2% 0 s                                         WebCore::FrameSelection::modify(WebCore::FrameSelection::EAlteration, WebCore::SelectionDirection, WebCore::TextGranularity, WebCore::EUserTriggered)
32.79 s   82.2% 0 s                                          WebCore::FrameSelection::modifyExtendingForward(WebCore::TextGranularity)
32.79 s   82.2% 0 s                                           WebCore::FrameSelection::nextWordPositionForPlatform(WebCore::VisiblePosition const&)
32.79 s   82.2% 0 s                                            WebCore::nextWordPosition(WebCore::VisiblePosition const&)
32.79 s   82.2% 0 s                                             WebCore::nextBoundary(WebCore::VisiblePosition const&, unsigned int (*)(WTF::StringView, unsigned int, WebCore::BoundarySearchContextAvailability, bool&))
32.79 s   82.2% 0 s                                              WebCore::forwardSearchForBoundaryWithTextIterator(WebCore::TextIterator&, WTF::Vector<char16_t, 1024ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&, unsigned int, unsigned int (*)(WTF::StringView, unsigned int, WebCore::BoundarySearchContextAvailability, bool&))
29.34 s   73.6% 0 s                                               WebCore::findNextWordFromIndex(WTF::StringView, int, bool)
27.03 s   67.8% 0 s                                                -[NSAttributedString(NSAttributedStringUIFoundationAdditions) nextWordFromIndex:forward:]

(changing component to editing)

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