RFR: 8341913: Support CDS heap dumping for Shenandoah and Epsilon [v2]

[Aleksey Shipilev]

On Tue, 22 Oct 2024 15:55:17 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Wrap test with Shenandoah check
>
> test/hotspot/jtreg/runtime/cds/appcds/sharedStrings/IncompatibleOptions.java line 116:
> 
>> 114:         if (GC.Shenandoah.isSupported()) {
>> 115:             testDump(4, "-XX:+UseShenandoahGC", "", "", false);
>> 116:         }
> 
> I didn't realize that Epsilon is also included in this PR. Should we add a test case for Epsilon as well?

I don't really want to add Epsilon tests, because we are playing with potential OOMs, and that would likely manifest as test bugs in future, once we create _a little bit more_ garbage in tests. So I just tested Epsilon manually.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/21457#discussion_r1811006570