[11u] RFR: 8226575: OperatingSystemMXBean should be made container aware

[Severin Gehwolf]

On Thu, 2020-07-16 at 11:57 +0100, Andrew Dinn wrote:
> Hi Severin,
> 
> On 15/07/2020 10:39, Severin Gehwolf wrote:
> > Could I please get a review of this container awareness backport for
> > OperatingSystemMXBean? I'd like to backport this since 8u will soon
> > receive a similar update and this would avoid regressions when
> > upgrading from JDK 8 to JDK 11 in the future.
> > 
> > The JDK 14 patch doesn't exactly apply since for an 11u backport it's
> > not appropriate to add new methods in OperatingSystemMXBean. Thus, for
> > this backport the old methods now return container aware values on an
> > OS which supports them (i.e. Linux only). I'm going to propse a test
> > fix, JDK-8236617, as a follow-up.
> > 
> > webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8226575/jdk11/02/webrev/
> > Bug: https://bugs.openjdk.java.net/browse/JDK-8226575
> > Corresponding CSR: https://bugs.openjdk.java.net/browse/JDK-8248804 (approved)
> > 
> > Testing: tier 1, :jdk_management, docker tests on Linux x86_64. All pass.
> Yes, the backport looks fine to me.

Thanks for the review, Andrew!

Cheers,
Severin