On Tue, Jun 5, 2018 at 6:12 AM,  <mog...@syntheticsemantics.com> wrote:
> I recommend taking a look at Laverdet's approach used in Node.js:
> https://github.com/laverdet/isolated-vm

What isolated-vm does isn't 100% bulletproof either.  I think the
advice of "run it in a separate process" still stands.

For the curious, isolated-vm uses a custom arraybuffer allocator that
tracks how much memory has been allocated and throws a termination
exception when a threshold is exceeded.  There's a similar check in a
GC epilogue callback.  That only covers some out-of-memory conditions
though, other allocation failures still kill the process.

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