Integrated: JDK-8296796: Provide clean, platform-agnostic interface to C-heap trimming

[Thomas Stuefe]

On Thu, 10 Nov 2022 13:23:34 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> This is a breakout from [JDK-8293114](https://bugs.openjdk.org/browse/JDK-8293114), which is starved for reviews. So I attempt to break up that fix into smaller units which are hopefully easier to review separately.
> 
> We can trim the C-heap manually using jcmd since [JDK-8268893](https://bugs.openjdk.org/browse/JDK-8268893). This patch reshapes this code, cleaning it up in an OS-agnostic way. That will allow us to add implementions for other platforms (I have this on my list for AIX at least) and make review of 8293114 easier.

This pull request has now been integrated.

Changeset: 0845b39c
Author:    Thomas Stuefe <stuefe at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/0845b39caf6f04dca9cb7a5852f05b4b5ffbc034
Stats:     141 lines in 10 files changed: 89 ins; 34 del; 18 mod

8296796: Provide clean, platform-agnostic interface to C-heap trimming

Reviewed-by: dholmes, rkennke

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PR: https://git.openjdk.org/jdk/pull/11089