On Thu, Jun 11, 2020 at 6:52 PM Jonathan Resnick <jresn...@gmail.com> wrote:
>
> I set up a weak callback like so:
>
>     UniquePersistent<Object> target(isolate, obj);
>     target.SetWeak(args, MyCallback, v8::WeakCallbackType::kParameter);
>
> In my testing so far, it appears that MyCallback runs on the same thread as 
> the JS code is executing on. Is it safe to assume that this callback *always* 
> runs on the JS execution thread? I need to free some memory in this callback, 
> and obviously my code can be significantly simpler if I don't need to worry 
> about synchronizing access to my data-structures.

Yes, it runs on the same thread.

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