Request for review (S): 8005489: VM hangs during GC with ParallelGC and ParallelGCThreads=0

[Stefan Karlsson]

Looks good.

StefanK

On 01/08/2013 11:16 AM, Bengt Rutisson wrote:
>
> Hi all,
>
> Could I have a couple of reviews for this change. The parallel 
> collector needs at least one GC worker thread to function properly . 
> Setting ParallelGCThreads=0 on the command line causes the parallel 
> collector to hang in product builds and assert in debug builds. This 
> has been the case back to JDK6u14.
>
> The fix will instead print an error message and exit the VM if 
> ParallelGCThreads=0 is used with UseParallelGC. This is similar to 
> what we recently did for the ParNew collector.
>
> http://cr.openjdk.java.net/~brutisso/8005489/webrev.00/
>
> Thanks,
> Bengt