Integrated: 8352969: G1: Improve testability of optional collections

[Guanqiang Han]

On Thu, 21 Aug 2025 10:10:23 GMT, Guanqiang Han <ghan at openjdk.org> wrote:

> This PR introduces a new diagnostic flag EvacuateAllOptionalRegions to force G1 GC to evacuate all optional regions regardless of the predicted pause time. The motivation is to allow testing and validation of optional region evacuation behavior without being constrained by the remaining pause time.

This pull request has now been integrated.

Changeset: e172e6a4
Author:    Guanqiang Han <ghan at openjdk.org>
Committer: Albert Mingkun Yang <ayang at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/e172e6a4e37cf06afee662625a01193f5528a2b1
Stats:     156 lines in 5 files changed: 146 ins; 0 del; 10 mod

8352969: G1: Improve testability of optional collections

Reviewed-by: ayang, tschatzl

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PR: https://git.openjdk.org/jdk/pull/26880