RFR: 8277990: NMT: Remove NMT shutdown capability

[Zhengyu Gu]

On Thu, 2 Dec 2021 15:21:13 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

> Hmmm... sounds like a ReadersWriter lock to me... Any number of Readers and a single Writer after all the Readers have released... It has surprised me before that HotSpot does not have such a useful mechanism...

Well, the difference is that, it does not have well defined critical section. It depends on other structures/operations for data integrity.

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

PR: https://git.openjdk.java.net/jdk/pull/6640