[Webkit-unassigned] [Bug 195656] Add a thread safety assertion for RefCounted

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=195656

--- Comment #4 from Geoffrey Garen <ggaren at apple.com> ---
We used to have assertions like this and we had to remove them. The corner case was JavaScriptCore. JavaScriptCore allows clients to run on any thread, and it ensures thread safety through coarse-grained locking. JavaScriptCore also uses many fundamental WTF types. We could not find a practical way to annotate all types as asserting their thread affinity if and only if not used by JavaScriptCore.

But perhaps the opposite is possible: WebCore could annotate certain important objects upon allocation as being tied to a thread.

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