RFR: JDK-8305507 Add support for grace period before AbortVMOnSafepointTimeout triggers [v2]

[David Holmes]

On Fri, 28 Apr 2023 16:37:53 GMT, Wojciech Kudla <duke at openjdk.org> wrote:

>> As described https://bugs.openjdk.org/browse/JDK-8305507 this change adds a grace period before AbortVMOnSafepointTimeout activates to allow for JVM warm-up to conclude
>
> Wojciech Kudla has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Simplified getting elapsed time since VM start, added test case for -XX:AbortVMOnSafepointTimeoutDelay

This seems fine to me.

Thanks.

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Marked as reviewed by dholmes (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/13386#pullrequestreview-1511905552