[Webkit-unassigned] [Bug 133200] New: Add UI process watchdog on iOS to ensure WebProcess connections close

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=133200

           Summary: Add UI process watchdog on iOS to ensure WebProcess
                    connections close
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: barraclough at apple.com


When the WebProcessProxy wants to disconnect from a WebContent process it just drops the connection, and hopes the connection closes. There is a watchdog thread in the ChildProcess to try to ensure this happens.

On iOS the process may not be runnable at the time, preventing termination. Instead add a watchdog in the UI process to make the process runnable, and to terminate if it doesn't quit in a timely fashion.

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