RFR(xs): 8040245: G1: VM hangs during shutdown
Bengt Rutisson
bengt.rutisson at oracle.com
Thu Apr 17 13:26:47 UTC 2014
Hi Per,
Looks good.
Bengt
On 2014-04-17 14:27, Per Liden wrote:
> Hi,
>
> Could I please have this fix reviewed.
>
> Summary: JDK-8037112 added controlled shutdown of concurrent marking
> threads in G1 during VM exit, to prevent these threads from using
> resources that are destroyed later in the shutdown phase. However, it
> turns out there are at least two unrelated bugs (I've filed
> JDK-8040803 and JDK-8040804) in the concurrent mark code which under
> some circumstances can provoke the concurrent mark threads to hang,
> and thus prevent the VM from exiting. This patch temporarily disables
> the controlled shutdown of the CM threads (because it causes timeouts
> in our testing) until those other bugs have been sorted out, at which
> point we should enabled this again (filed JDK-8040807 to track that).
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8040245
> Webrev: http://cr.openjdk.java.net/~pliden/8040245/webrev.0/
>
> Thanks!
> /Per
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