RFR (S) 8240440: Implement get_safepoint_workers() for parallel GC

[Thomas Schatzl]

Hi,

On 05.03.20 15:40, Thomas Schatzl wrote:
> Hi Ralf,
> 
> On 05.03.20 14:29, Schmelter, Ralf wrote:
>> Hi,
>>
>> could you review the small change. It implements 
>> get_safepoint_workers() for the ParallelScavengeHeap, so that the 
>> worker threads could be used for other tasks. This is already 
>> implemented for G1, Z and Shenandoah. Since the parallel GC does used 
>> the worker threads only in the collection VM operation it can safely 
>> share them.
>>
>> bugreport: https://bugs.openjdk.java.net/browse/JDK-8240440
>> webrev: http://cr.openjdk.java.net/~rschmelter/webrevs/8240440/webrev.0/
>>
> 
>    looks good to me. Let me run it through testing.
> 

  hs-tier1-5 look good. Ship it.

Thanks,
   Thomas