RFR: JDK-8202788: Explicitly reclaim cached thread-local direct buffers at thread exit

[Alan Bateman]

On 21/06/2018 18:29, Peter Levart wrote:
>
>
> On 06/21/2018 07:01 PM, Tony Printezis wrote:
>> I’m trying exactly that. :-)
>
> Sorry, I didn't know. Here's my attempt:
>
> http://cr.openjdk.java.net/~plevart/jdk-dev/DBBCache_Cleanup/webrev.07/
>
> I also added @run main/othervm to TempDirectBuffersReclamation test.
Right, tests depending on BufferPoolMXBean::getXXX do need to be 
/othervm to avoid interference from free'ing buffers that were used by 
previous tests in the same VM. If the name of the direct buffer pool is 
changed then it would be useful for this test to fail so that it can be 
updated. For that reason, I think it should fail if "direct" is not 
found, maybe just add orElseThrow to the pipeline.

The rest looks okay to me (and although it took many iterations, I think 
we got it to a good place).

-Alan