RFR(xs): 8202073: MetaspaceAllocationTest gtest shall lock during space creation
thomas.stuefe at gmail.com
Fri Apr 20 14:20:09 UTC 2018
Thank you Coleen!
On Fri, Apr 20, 2018 at 2:38 PM, <coleen.phillimore at oracle.com> wrote:
> Looks good.
> On 4/20/18 3:11 AM, Thomas Stüfe wrote:
>> May I please have reviews for this small fix to the
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8202073
>> MetaspaceAllocationTest mimicks ClassLoaderMetaspace creation,
>> allocation and destruction to stress metaspace allocation.
>> So it runs outside the normal create-allocate-delete cycle in the VM.
>> For instance, there are no associated ClassLoaderData. So, the test
>> needs to mimick the surroundings of the VM.
>> This means, when creating ClassLoaderMetaspace objects, the test needs
>> to lock its associated lock. In the VM, this happens in
>> ClassLoaderData::metaspace_non_null(), and there the associated lock
>> is pulled before allocation too.
>> Thanks, Thomas
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