This is just a guess, but does v8::Isolate::Enter do it?

https://v8.paulfryzel.com/docs/master/classv8_1_1_isolate.html#aec80bb49b6b7647ff75e8f2cc9484ea3



On Friday, July 28, 2017 at 11:56:16 AM UTC-7, Ian Bull wrote:
>
> I know Isolate::GetCurrent is deprecated, but it's still being used inside 
> V8 itself in places, and there are times when it's getting the wrong 
> isolate. [1] for example.
>
> [1] String::Value::Value(v8::Local<v8::Value> obj) : str_(NULL), 
> length_(0)  // in api.cc
>
> I created Isolate A, and inside a callback, I create some new Isolates, 
> Lock and Unlock. Then when I return from the callback, the 
> Isolate::GetCurrent no longer points to Isolate A, and in some cases points 
> to null. I am always tracking which Isolate I'm using, and it's pretty easy 
> to detect that the wrong "current isolate" is set. Is there a way to tell 
> V8 that Isolate::GetCurrent should now point to a particular Isolate?
>
> Cheers,
> Ian
>

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