Request for Review (xs) - 8155966: Assertion failures when -XX:+UseParallelGC -XX:ParallelGCThreads=1

[Derek White]

On 5/3/16 6:51 PM, Jon Masamitsu wrote:
> 8155966: Assertion failures when -XX:+UseParallelGC 
> -XX:ParallelGCThreads=1
> https://bugs.openjdk.java.net/browse/JDK-8155966
>
> The change for 8150994 change the stealing task to the main task for 
> compaction.
> Mistakenly left in the stealing task definition was code to skip the 
> stealing task
> if there was only 1 GC thread (no other GC thread from which to steal).
>
> The code changes are an improved assertion message and removal of the 
> code
> from the stealing tasks for the special case of 1 GC worker.
>
>
> http://cr.openjdk.java.net/~jmasa/8155966/webrev.00/
>
> Failure was reproducible with GCOld and ran GCOld with
> ParallelGCThreads=1 and default number of GC threads for
> testing.
Hi Jon,

The fix looks good.

  - Derek