On Tue, Jan 19, 2021 at 1:44 PM Vinayaka Kamath
<vinayaka.kam...@couchbase.com> wrote:
>
> Is there any better way to do it? Basically I am exposing an Object Template
> to JS through weak persistent handle and it holds internal resources with it.
> When the object is no longer accessible in the current executing scope of the
> JS code, I want to free up all the resources held by the instance of Object
> Template(maybe through some callback). At first glance it seems like this is
> what weak handles are meant for.
Well, now you know they're not. :-)
Think of GC as "may reclaim", not "will reclaim", certainly not "will
deterministically reclaim."
If you need determinism, either JS needs to manually release the
resource in try/finally fashion, or you neuter the object after JS is
done with it, callback style:
withResource(function(resource) {
// do something with |resource|
}); // <- withResource() neuters |resource| when the callback returns
"Neuter" in this context means "free the internal resource". The
object may still exist in JS land but you clear its internal pointer.
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