RFR: 8355756: G1HeapSizingPolicy::full_collection_resize_amount should consider allocation size

Tue Apr 29 09:09:57 UTC 2025

Hi,

Please review this change to account for pending allocations when deciding how much to shrink the heap after a full gc. Otherwise, we shrink the heap only to trigger an expansion to satisfy the allocation request that triggered the full gc.

Testing: Tier 1-3

-------------

Commit messages:
 - nit
 - refactor full collection

Changes: https://git.openjdk.org/jdk/pull/24944/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24944&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8355756
  Stats: 44 lines in 8 files changed: 14 ins; 0 del; 30 mod
  Patch: https://git.openjdk.org/jdk/pull/24944.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24944/head:pull/24944

PR: https://git.openjdk.org/jdk/pull/24944