On Mon, Mar 5, 2018 at 3:44 PM, A.M. <cis74...@gmail.com> wrote:
> Thanks again for your insights, Ben. I ended up tracking all weak handles,
> as well as all allocations, so combining weak handle callbacks with walking
> all allocations after the isolate has been disposed of seems to cover all
> memory allocations without any interference from v8 background threads.
>
> Strange, though, that the v8 doesn't provide a way to walk all live memory
> in an isolate after all contexts are gone or some similar stage. Sounds like
> a straightforward way to manage resources. .

It exists (and I should have mentioned that in my previous email,
sorry about that.)  Maybe you found them already:
`Isolate::VisitHandlesWithClassIds()` and
`Isolate::VisitWeakHandles()` - do what they say on the tin but note
that weak handles need to have a class id too.

It can be hard to determine when all contexts are really dead - the
microtask queue (what drives promises) can keep them alive beyond a
simple return from JS land - but that's probably not a problem for you
if you're going to dispose of the isolate anyway.

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