Integrated: 8267257: Shenandoah: Always deduplicate strings when it is enabled during full gc

[Zhengyu Gu]

On Tue, 18 May 2021 15:18:32 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

> Full GC should recover as much memory as possible, so it should deduplicate all string candidates regardless their ages, when it is enabled. Also enhanced TestStringDedup.java test to ensure all candidates are deduplicated.
> 
> Note: Full GC does not preserve age bits, so current implementation will not deduplicate any strings even with back-to-back full GCs.
> 
> Test:
> - [x] hotspot_gc_shenandoah

This pull request has now been integrated.

Changeset: 0b49f5ae
Author:    Zhengyu Gu <zgu at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/0b49f5ae19b51d7ff7548b8492ea0f58dfe53180
Stats:     140 lines in 9 files changed: 58 ins; 45 del; 37 mod

8267257: Shenandoah: Always deduplicate strings when it is enabled during full gc

Reviewed-by: rkennke

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PR: https://git.openjdk.java.net/jdk/pull/4096