RFR: JDK-8276422 Add command-line option to disable finalization

[Aleksey Shipilev]

On Thu, 18 Nov 2021 07:40:34 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Do we even have to have a flag on Java side? It looks like these calls are only done as the upcalls from VM, so we might just keep the flag on VM side?
>
> @shipilev not sure what you mean by  "a flag on the Java side". The Java code just queries the VM for the finalization enabled/disabled state and uses that to control things.

Yeah, "flag" is `Holder.ENABLED` here. I mean, are Java methods `registerFinalizer` and `runFinalization` called only by VM? If so, can VM check the whole thing on VM side, without going to Java and asking back from there?

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PR: https://git.openjdk.java.net/jdk/pull/6442