RFR(XS): 8213898: CDS dumping of springboot asserts in G1ArchiveAllocator::alloc_new_region

[Stefan Johansson]

Looks good to me too,
StefanJ

On 2018-11-15 19:30, Jiangli Zhou wrote:
> Thanks again, Thomas!
> 
> Jiangli
> 
> 
> On 11/15/18 10:11 AM, Thomas Schatzl wrote:
>> Hi,
>>
>> On Thu, 2018-11-15 at 10:05 -0800, Jiangli Zhou wrote:
>>> Please review the following small fix for the
>>> assert(is_available(index)) failure when dumping the classes for
>>> springboot (thanks Eric Caspole for reporting the issue!).
>>>
>>>     webrev: http://cr.openjdk.java.net/~jiangli/8213898/webrev.00/
>>>
>>>     bug: https://bugs.openjdk.java.net/browse/JDK-8213898
>>>
>>> HeapRegionManager::find_highest_free is used by
>>> G1ArchiveAllocator::alloc_new_region at CDS dump time for allocating
>>> a highest free GC region when archiving selected java heap objects.
>>> We need to check if the region obtained from the
>>> HeapRegionManager::_regions is available, as it might be uncommitted
>>> during heap shrinking. The fix has been reviewed by Thomas Schatzl
>>> in the bug report. Thanks Thomas!.
>>   looks good.
>>
>> Thomas
>>
>>
>