RFR: 8290806: Only add eager reclaim task to G1PostEvacuateCollectionSetCleanupTask2 if there were candidates

Thu Jul 21 12:00:37 UTC 2022

Hi all,

  can I have reviews for this tiny optimization that does not enqueue the eager reclaim task if there were no eager reclaim candidates? This saves an iteration over all heap regions in applications that do not allocate humongous type arrays.

Testing: gha, gc/g1

Thanks,
  Thomas

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Commit messages:
 - Initial version

Changes: https://git.openjdk.org/jdk/pull/9590/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9590&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8290806
  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9590.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9590/head:pull/9590

PR: https://git.openjdk.org/jdk/pull/9590