[8u] RFR (S) 8223177: Data race on JvmtiEnvBase::_tag_map in double-checked locking

Andrew John Hughes gnu.andrew at redhat.com
Wed Aug 21 13:18:12 UTC 2019

On 07/08/2019 11:53, Aleksey Shipilev wrote:
> Original bug:
>   https://bugs.openjdk.java.net/browse/JDK-8223177
>   https://hg.openjdk.java.net/jdk/jdk/rev/27c8a2e0b0e5
> This patch applies to 8u, but does not compile, because regular OrderAccess methods do not accept
> pointers. We need to use the *_ptr_* versions of the same methods and do casts from void*.
> 8u webrev:
>   http://cr.openjdk.java.net/~shade/8223177/webrev.8u.01/
> Testing: tier1

Looks good to me.

The OrderAccess method change is necessary because 8u lacks JDK-8188813:

You're missing "that full template experience" ;-)

Andrew :)

Senior Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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