RFR: JDK-8305506: Add support for fractional values of SafepointTimeoutDelay

Fri Apr 21 09:57:53 UTC 2023

As stated in https://bugs.openjdk.org/browse/JDK-8305506 this change replaces SafepointTimeoutDelay as integer value with a floating point type to support sub-millisecond SafepointTimeout thresholds.
This is immensely useful for investigating time-to-safepoint issues in low latency space.

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Commit messages:
 - JDK-8305506 Added support for fractional values of SafepointTimeoutDelay

Changes: https://git.openjdk.org/jdk/pull/13373/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13373&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305506
  Stats: 9 lines in 3 files changed: 4 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/13373.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13373/head:pull/13373

PR: https://git.openjdk.org/jdk/pull/13373