[Webkit-unassigned] [Bug 128384] New: [iOS] Eliminate race between XPC connection queue and Notification queue

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=128384

           Summary: [iOS] Eliminate race between XPC connection queue and
                    Notification queue
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector (Deprecated)
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: joepeck at webkit.org
                CC: timothy at apple.com, ggaren at apple.com,
                    ddkilzer at webkit.org


Radar: <rdar://problem/16009483>

* STEPS TO REPRODUCE
1. Launch Remote Debugger
2. Launch MobileSafari
3. Suspend MobileSafari
4. Close Remote Debugger
5. Launch Remote Debugger
6. Launch MobileSafari
  => at either step (5) or (6) the suspended -> resumed MobileSafari should have responded to the "com.apple.webinspectord.available" notification and re-connected to webinspectord. However, it did not.

This is a race between the notification handler on a generic global queue and the xpc failed notification being handled on the XPC connection queue.

Sharing a queue gives us the correct deterministic ordering.

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