Hi Stefan,
I think a better fix is to find another operation that will throw an
exception. ThreadMXBean::getThreadInfo throws IAE and it can be a
candidate.
Mandy
On 5/31/18 6:38 AM, Stefan Karlsson wrote:
Hi all,
Please review this patch to deal with the case when all available
MemoryPoolMXBeans support usage thresholds.
http://cr.openjdk.java.net/~stefank/8204170/webrev.01/
https://bugs.openjdk.java.net/browse/JDK-8204170
The tests searches for a MemoryPoolMXBean that returns false for
isUsageThresholdSupported(), and then uses one of those pools to trigger
UnsupportedOperationExceptions when setUsageThreshold is used.
ZGC doesn't provide a pool that doesn't support usage threshold, and the
test therefore throws an NPE.
The suggested fix is to add:
if (pool == null) {
return; // All pools support usage threshold
}
An alternative fix would be to filter out the test if ZGC is used.
Thanks,
StefanK
