[Webkit-unassigned] [Bug 131697] New: Move DOM timer throttling out of the page throttler

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=131697

           Summary: Move DOM timer throttling out of the page throttler
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: slewis at apple.com
                CC: barraclough at apple.com
        Depends on: 131696



Stephanie Lewis <slewis at apple.com> changed:

           What    |Removed                     |Added
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 Attachment #229405|                            |review?
               Flag|                            |


Created an attachment (id=229405)
 --> (https://bugs.webkit.org/attachment.cgi?id=229405&action=review)
patch

DOM timer throttling is currently part of the page throttler which uses per process state and per page state to determine when to throttle.  This led us to being overly conservative when turning DOM throttling off.  It should only respond to view state changes.

Additionally since creating extra Page Throttlers for WebKit1 views and SVG images caused bugs in tracking state we'll reserve the Page Throttler for WebKit2 views.  To avoid regressing we should move DOM timer throttling back to the page.

<rdar://problem/16473004> Throttling DOM timers should be per-page, not per-process

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