[Webkit-unassigned] [Bug 116108] New: Improve -webkit-text-underline-position memory usage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=116108

           Summary: Improve -webkit-text-underline-position memory usage
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: Lamarque.Souza at basyskom.com


-webkit-text-underline-position support was implemented in [1]. Eric Seidel has some concerns about memory usage [2] because of the private variable m_maxLogicalTop added to all RootInlineBox objects. This bug intents to improve memory usage of -webkit-text-underline-position by adding a cache for m_maxLogicalTop that will be used only when -webkit-text-underline-position is used in the page. That way if the page does not use -webkit-text-underline-position it should not hit memory overhead.

[1] http://trac.webkit.org/changeset/146104
[2] https://codereview.chromium.org/14576017#msg13

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