RFR: JDK-8211270: GC abstraction to get real object and headers size

[Roman Kennke]

Any opinions on that one?

Roman

> Duh.
> 
> Webrev:
> http://cr.openjdk.java.net/~rkennke/JDK-8211270/webrev.00/
> 
> Thanks,
> Roman
> 
> Am 28.09.18 um 12:11 schrieb Roman Kennke:
>> Shenandoah GC uses one extra word per object. Some places need to know
>> the real object or header size (fwd ptr plus object).
>>
>> The affected code paths are WB_GetObjectSize(),
>> JvmtiEnv::GetObjectSize() and the PLAB constructor. The patch also adds
>> an assert later in PLAB that uses the header_size().
>>
>> Bug:
>> https://bugs.openjdk.java.net/browse/JDK-8211270
>> Webrev:
>> file:///home/rkennke/src/openjdk/webrev/JDK-8211270/webrev.00/
>>
>> Can I please get reviews?
>>
>> Thanks,
>> Roman
>>
> 

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