RFR: 8264640: CMS ParScanClosure misses a barrier

Hohensee, Paul hohensee at amazon.com
Tue Apr 27 13:17:42 UTC 2021



-----Original Message-----
From: jdk8u-dev <jdk8u-dev-retn at openjdk.java.net> on behalf of Anton Kozlov <akozlov at azul.com>
Date: Tuesday, April 27, 2021 at 4:38 AM
To: "jdk8u-dev at openjdk.java.net" <jdk8u-dev at openjdk.java.net>
Subject: Re: RFR: 8264640: CMS ParScanClosure misses a barrier


On 4/19/21 10:04 AM, Anton Kozlov wrote:
> Hi,
> Original bug:
>    https://bugs.openjdk.java.net/browse/JDK-8264640
>    https://github.com/openjdk/jdk13u-dev/commit/efc81a3d
> Please review a backport of the fix for CMS. The issue originally manifested in
> 8u. Original patch applied almost cleanly, except adjustments for very minor
> context differences (obj->mark vs obj->mark_raw).
> 8u webrev:
>    http://cr.openjdk.java.net/~akozlov/8264640/8.webrev/
> Testing: x86_64 build, hotspot tier1 (2 test failures before and after this patch)
> Thanks,
> Anton

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