[Webkit-unassigned] [Bug 145090] New: Web Inspector: TimelineAgent needs to handle nested runloops

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=145090

            Bug ID: 145090
           Summary: Web Inspector: TimelineAgent needs to handle nested
                    runloops
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mattbaker at apple.com
                CC: graouts at webkit.org, joepeck at webkit.org,
                    jonowells at apple.com, mattbaker at apple.com,
                    nvasilyev at apple.com, timothy at apple.com,
                    webkit-bug-importer at group.apple.com

* SUMMARY
TimelineAgent needs to handle nested runloops.

Pausing script execution in the Web Inspector starts a nested runloop, which causes the TimelineAgent to pop the current rendering frame record before the outer runloop completes. We should track the runloop nesting level, and only push/pop rendering frame records when the stack depth is zero.

* STEPS TO REPRODUCE
Run the following inspector test: LayoutTests/inspector/timeline/debugger-paused-while-recording.html

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