[jdk24] RFR: 8345970: pthread_getcpuclockid related crashes in shenandoah tests

[William Kemper]

Clean backport. Fixes acute issue with musl libc (used by Alpine Linux).

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Commit messages:
 - Backport 2ce53e88481659734bc5424c643c5e31c116bc5d

Changes: https://git.openjdk.org/jdk/pull/22933/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22933&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345970
  Stats: 18 lines in 4 files changed: 15 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22933.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22933/head:pull/22933

PR: https://git.openjdk.org/jdk/pull/22933