best practices for testing JVM changes that may interact with CDS?

[harold seigel]

Hi John,

You could try creating a CDS region (-Xshare:dump) and then running the 
JTREG harness and the hotspot JTREG tests with -Xshare:on to test this.  
Unfortunately, even if your changes are fine, you will get 40+ failures 
because some of the tests can't handle -Xshare:on.

Harold

On 7/18/2013 2:59 PM, John Rose wrote:
> David Chase and I are testing a JVM change that may affect the layout of vtables.  I know vtables are special-cased in CDS (class data sharing) code, which dumps and reloads metadata including vtables.
>
> What is the best way to perform regression tests for changes that might interact with CDS?  Is it enough to run jtreg tests?  I notice that there appears to be a dump/load end-to-end test in test/runtime/SharedArchiveFile/.
>
> Thanks,
> — John