Integrated: 8315560: GenShen: assert failed: Object klass pointer must go to metaspace

[William Kemper]

On Mon, 18 Sep 2023 16:21:22 GMT, William Kemper <wkemper at openjdk.org> wrote:

> The SATB barrier which is on during concurrent marking of old may cause pointers into the collection set to be held by the SATB buffer. When a concurrent cycle degenerates during or before the root scan, these buffers are purged. However, they must also be purged at the end of a degenerated cycle. The buffers cannot be purged unconditionally at the beginning of a degenerated cycle because it could lose pointers necessary to complete the concurrent mark of the young generation.

This pull request has now been integrated.

Changeset: 7f9b983d
Author:    William Kemper <wkemper at openjdk.org>
URL:       https://git.openjdk.org/shenandoah/commit/7f9b983d57da8a4416ce7a0d217cf516aaea7cd0
Stats:     7 lines in 1 file changed: 7 ins; 0 del; 0 mod

8315560: GenShen: assert failed: Object klass pointer must go to metaspace

Reviewed-by: kdnilsen

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PR: https://git.openjdk.org/shenandoah/pull/326