RFR: 8254623: gc/g1/TestHumongousConcurrentStartUndo.java still fails sometimes

[Kim Barrett]

> On Oct 13, 2020, at 12:25 PM, Thomas Schatzl <tschatzl at openjdk.java.net> wrote:
> 
> On Tue, 13 Oct 2020 11:33:14 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:
> 
> I will look into that code, but I need triggering of concurrent mark via humongous object allocation specifically.

I think it should work to acquire control, set up the state you want, release control, and
perform the triggering humongous allocation.