Integrated: 8257701: Shenandoah: objArrayKlass metadata is not marked with chunked arrays

[Zhengyu Gu]

On Thu, 3 Dec 2020 17:51:05 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

> Usually, marking code calls Klass::oop_oop_iterate(), where it marks object klass metadata.
> 
> Shenandoah introduced chunked array processing a while ago to breakup marking a large array into chunks, then call oop_iterate_range() to mark individual chunk. Unfortunately, oop_iterate_range() does not iterate over object klass metadata, so we end up missing the mark of object array klass metadata.
> 
> Thanks for @lmao (Liang Mao) reporting the bug.
> 
> - [x] hotspot_gc_shenandoah

This pull request has now been integrated.

Changeset: 7c7facc2
Author:    Zhengyu Gu <zgu at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/7c7facc2
Stats:     5 lines in 1 file changed: 5 ins; 0 del; 0 mod

8257701: Shenandoah: objArrayKlass metadata is not marked with chunked arrays

Reviewed-by: shade

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PR: https://git.openjdk.java.net/jdk/pull/1602