[jdk17u-dev] RFR: 8284165: Add pid to process reaper thread name

Tue Jan 10 12:59:57 UTC 2023

I'd like to downport this patch since it is a small improvement that comes in very handy when analyzing mass-fork scenarios.

Does not apply cleanly: Original patch modifies `[test/jdk/java/lang/ProcessBuilder/ProcessReaperCCL.java](https://github.com/openjdk/jdk/commit/9561b5e041c4cc70319e60953819c521c1e68d6c#diff-447b6da42c627f901f46bbe517abd2db37364b2536bd740c036830535c8a1e83)` but that test does not exist in 17u yet. Left the hunk out.

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Commit messages:
 - Backport 9561b5e041c4cc70319e60953819c521c1e68d6c

Changes: https://git.openjdk.org/jdk17u-dev/pull/1046/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1046&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8284165
  Stats: 35 lines in 2 files changed: 10 ins; 3 del; 22 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1046.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1046/head:pull/1046

PR: https://git.openjdk.org/jdk17u-dev/pull/1046