The fix updates Linux (and server-side of macosx) implementation to support Attach API v2 (shared code and Windows implementation were introduced by #20782)
Testing: tier1,tier2,tier3,tier4,hs-tier5-svc manually tested backward compatibility (old tools can attach to current VMs, current tools can attach to older VMs) with jdk21 and jdk8. ------------- Commit messages: - attach_v2_linux Changes: https://git.openjdk.org/jdk/pull/22223/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22223&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8342995 Stats: 323 lines in 5 files changed: 98 ins; 193 del; 32 mod Patch: https://git.openjdk.org/jdk/pull/22223.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/22223/head:pull/22223 PR: https://git.openjdk.org/jdk/pull/22223
