RFR (S/M): 8231670: Remove TaskExecutor abstraction used in preserved marks processing

[Stefan Johansson]

Hi Thomas,

Nice cleanup!

On 2019-12-17 14:19, Thomas Schatzl wrote:
> Hi all,
> 
>    can I get reviews for this cleanup of the preserved marks handling 
> that removes the unnecessary TaskExecutor "framework". This code is 
> obsolete since parallel gc also uses WorkGangs (JDK-8204951).
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8231670
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8231670/webrev/
Looks good,
StefanJ

> Testing:
> hs-tier1-5 almost completed without issues
> 
> Thanks,
>    Thomas