[Webkit-unassigned] [Bug 21609] New: Make MessagePorts protect their peers across heaps

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=21609

           Summary: Make MessagePorts protect their peers across heaps
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore JavaScript
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org


Each MessagePort needs to GC protect its entangled one, because even if the
latter does not have a reachable wrapper, a message dispatched via the former
will have a reference to it when dispatched.

This already works in the case when both wrappers are in the same JS heap, but
as MessagePorts will be used for cross-thread communication, a different
mechanism is needed.


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