RFR: 8336763: Parallel: Merge PCMarkAndPushClosure and PCIterateMarkAndPushClosure

Thu Jul 18 16:22:01 UTC 2024

Simple merging two marking closures (w/o ref-processing). Also changed the lifetime of the closure to the same as the per-worker compaction-manager.

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Commit messages:
 - pgc-closure

Changes: https://git.openjdk.org/jdk/pull/20240/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20240&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8336763
  Stats: 70 lines in 4 files changed: 25 ins; 26 del; 19 mod
  Patch: https://git.openjdk.org/jdk/pull/20240.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20240/head:pull/20240

PR: https://git.openjdk.org/jdk/pull/20240