RFR: 8238665: Add JFR event for direct memory statistics

[Alan Bateman]

On 05/03/2020 09:54, Denghui Dong wrote:
> Hi Alan,
>
> If I use ManagementFactoryHelper to get memory pools, I still need to 
> modify src/java.management/share/classes/module-info.java
> to export sun.management, right?
>
I should have been clearer in my comment. I think it should be possible 
to put a helper in somewhere like jdk.internal.misc to replace 
ManagementFactoryHelper.getBufferPoolMXBeans(). It can return an 
unmodifable list of the MXBeans for the buffer pools. This should allow 
periodic stats/events for buffer pools other than the direct buffer pool.

-Alan.