RFR (M) 8210155: Lock ClassLoaderDataGraph

[coleen.phillimore at oracle.com]

On 8/30/18 1:31 PM, Erik Osterlund wrote:
> Hi Coleen,
>
> This looks good to me. I cherry picked this into my concurrent class unloading branch (and added the new lock around do_unloading). It passed GC test suite unloading and deleting classes concurrently, and also scanning the CLD roots concurrently. So that seems all good.

This is good!   Thank you for reviewing and taking it for a test drive.

Coleen

>
> Thanks for making this code more concurrency friendly.
>
> Thanks,
> /Erik
>
>> On 29 Aug 2018, at 18:07, coleen.phillimore at oracle.com wrote:
>>
>> Summary: In preparation for concurrent class unloading.
>>
>> open webrev at http://cr.openjdk.java.net/~coleenp/8210155.01/webrev
>> bug link https://bugs.openjdk.java.net/browse/JDK-8210155
>>
>> Tested with mach5 hs-tier1-7, which tests JFR and JVMTI changes. Also tested with performance dev-submit testing with no regression.
>>
>> Thanks,
>> Coleen