RFR[xxs] 8195065 runtime/appcds/ProhibitedPackage.java intermittent failure

[Mikhailo Seledtsov]

Fix looks good to me.
I believe this qualifies for a trivial rule.

Thank you,
Misha

On 2/23/18, 4:13 PM, Ioi Lam wrote:
> https://bugs.openjdk.java.net/browse/JDK-8195065
> http://cr.openjdk.java.net/~iklam/jdk11/8195065-cds-prohibited-package-intermittent-failure.v01/ 
>
>
> Summary:
>
> The test uses -Xshare:auto to launch a JVM process. In this sub 
> process, the CDS archive would sometimes be disabled due to Address 
> Space Layout Randomization, and the process would continue to 
> execution without using the archive.
>
> However, the variant of TestCommon.checkExec() used by the test 
> assumes that -Xshare:on is used, so the test incorrectly required that 
> that sub process must execute with the CDS archive.
>
> The fix is to use a different variant of TestCommon.checkExec() that 
> knows that -Xshare:auto is being used.
>
> ( You can see this coding pattern in other tests, e.g.,
> http://hg.openjdk.java.net/jdk/hs/file/4aa67aba6c85/test/hotspot/jtreg/runtime/appcds/jvmti/ClassFileLoadHookTest.java#l88 
> )
>
>
> Thanks
> - Ioi