[jdk17u-dev] Integrated: 8277990: NMT: Remove NMT shutdown capability

[Thomas Stuefe]

On Thu, 26 Jan 2023 16:22:44 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> This removes the NMT shutdown machinery from hotspot. For details, please see the associated JBS issue, as well as the companion change https://bugs.openjdk.org/browse/JDK-8277946 and CSR https://bugs.openjdk.org/browse/JDK-8277947.
> 
> This is not a clean backport, but the fixes are very minor:
> 
> - the original patch changes perfmemory_posix.cpp, but this hunk is not needed in JDK17
> - A small fix was needed since the "shutdown" dcmd option in JDK17 had been deprecated out of carefulness, not outright removed: https://github.com/openjdk/jdk17u-dev/commit/5ce36d6c210d265a59548bde2f9e53b73bfa5c6f . 
> 
> Testing:
> I manually ran runtime/NMT and all gtest variants for NMT on linux x64 and x86.
> SAP nightlies are scheduled.

This pull request has now been integrated.

Changeset: 9a992abf
Author:    Thomas Stuefe <stuefe at openjdk.org>
URL:       https://git.openjdk.org/jdk17u-dev/commit/9a992abfdb29fda57d0b8d97dab38ee95bb600b5
Stats:     470 lines in 20 files changed: 35 ins; 353 del; 82 mod

8277990: NMT: Remove NMT shutdown capability

Reviewed-by: mbaesken
Backport-of: 5a036ace01ebedd88fb3d9100e3a0c19871677ac

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PR: https://git.openjdk.org/jdk17u-dev/pull/1116