[jdk8u-ri] RFR: 8287132: Retire Runtime.runFinalizersOnExit so that it always throws UOE [v4]

[Iris Clark]

On Wed, 25 May 2022 01:26:56 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Please review these further changes for JDK 8 Maintenance Release 4 - JSR-337.
>> 
>> The MR4 changes to the reference processing implementation have made continued support for `runFinalizersonExit` unreasonable and so it is "retired" and will always throw `UnsupportedOperationException`. (This is what was also done for `Thread.stop(Throwable)` in JDK 8.)
>> 
>> Various updates to the specifications are made to remove references to running finalizers at exit - see the CSR request for details.
>> 
>> All dead code (including the already dead `JVM_Exit`) is removed. Shutdown.java is replaced by the version from mainline with a slight modification as 8u doesn't have `sun.misc.VM.isShutdown()`.
>> 
>> Tests using RFOE are deleted and a new test to check the throwing of UOE added. The new test was NOT a rename of an existing test but for some reason git is treating it that way.
>> 
>> Testing: :jdk_core group
>> 
>> Thanks,
>> David
>
> David Holmes has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix style nit

Spec changes in java.lang.{Runtime,Shutdown,System} align with CSR 8287133 and are as expected.

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Marked as reviewed by iris (Author).

PR: https://git.openjdk.java.net/jdk8u-ri/pull/9