[Webkit-unassigned] [Bug 158004] Modern IDB: TransactionOperations from a worker thread might be destroyed on main thread

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158004

--- Comment #3 from Brady Eidson <beidson at apple.com> ---
(In reply to comment #2)
> One idea for part of this:
> 
> All of the IDB ActiveDOMObjects guard their own "postTask" which has a guard
> lock around the scriptExecutionContext(). They also use that lock inside
> their "contextDestroyed()" observer.
> 
> That will definitely solve the first big problem - the race with the
> scriptExecutionContext itself existing and being active.
> 
> Then we just need to solve "the thread runloop itself may no longer be
> active enough to use."

And the moment I woke up this morning, the super obvious answer hit me: When the thread shuts down, it cancels all currently registered operations, which will cause them to get destroyed on the appropriate thread before said thread goes away.

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