RFR: 8194759: Support caching class mirror objects

[Jiangli Zhou]

Thank you, Coleen!

I filed JDK-8198717 <https://bugs.openjdk.java.net/browse/JDK-8198717> for those compute_optional_offset() functions.

Thanks again!
Jiangli

> On Feb 26, 2018, at 12:43 PM, coleen.phillimore at oracle.com wrote:
> 
> 
> http://cr.openjdk.java.net/~jiangli/8194759/webrev.01.inc/src/hotspot/share/classfile/javaClasses.cpp.udiff.html
> 
> This was a good suggestion.   We need to file a follow-up RFE to remove the compute_optional_offsets.  These were for hotspot express and when we didn't build the jdk with the jvm.
> 
> The Klass change looks great.  This whole change looks good to me.
> 
> Thanks,
> Coleen
> 
> On 2/23/18 1:24 AM, Jiangli Zhou wrote:
>> Here is the new webrev with updates that address feedbacks from Misha, Ioi, Coleen and Thomas:
>> 
>> http://cr.openjdk.java.net/~jiangli/8194759/webrev.01/ <http://cr.openjdk.java.net/~jiangli/8194759/webrev.01/>
>> 
>> Incremental webrev:
>> http://cr.openjdk.java.net/~jiangli/8194759/webrev.01.inc/ <http://cr.openjdk.java.net/~jiangli/8194759/webrev.01.inc/>
>> 
>> Rerunning tiered testing ...
>> 
>> Thanks,
>> Jiangli
>> 
>