RFR: 8290036: Define and specify Runtime shutdown sequence [v4]

[Stuart Marks]

On Mon, 8 Aug 2022 02:36:45 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> "initiated" is also used.
>
> I would suggest saying as little as possible here and simply deferring to the Runtime text ie.:
> 
>> The <a href="Runtime.html#shutdown">shutdown sequence</a> begins when all started
> non-daemon threads have terminated. 
> 
> No need to elaborate, or directly refer to exit().

I changed "commencing" to beginning, and I removed the sentence talking about Runtime::exit. I think it's useful to be explicit about unstarted non-daemon threads.

-------------

PR: https://git.openjdk.org/jdk/pull/9437