[Webkit-unassigned] [Bug 136350] New: requestAnimationFrame callbacks are stalled in the inspector page while inspected page is paused

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=136350

           Summary: requestAnimationFrame callbacks are stalled in the
                    inspector page while inspected page is paused
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: burg at cs.washington.edu
                CC: timothy at apple.com, sam at webkit.org,
                    simon.fraser at apple.com, cmarrin at apple.com,
                    joepeck at webkit.org, sbarati at apple.com


This has the same root cause as <https://webkit.org/b/135830>. Here, CVDisplayLink gets frame draw intervals from Quartz, then sends that to ScriptedAnimationController via callOnMainThread to signal it's time to service callbacks. But, callOnMainThread dispatching is stuck for all pages while the debugger is paused and running a nested event loop.

The best fix is moving inspector out-of-process.

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