RFR: 8176472: Lazily create ModuleEntryTable

[Lois Foltan]

On 4/17/2017 4:04 PM, Rachel Protacio wrote:
> Thanks for your comments, Lois and Coleen. Here's the updated webrev: 
> http://cr.openjdk.java.net/~rprotacio/8176472.02

Reviewed, thank you for making the changes!
Lois

>
> Rachel
>
>
> On 4/14/2017 10:34 AM, Rachel Protacio wrote:
>> Hello!
>>
>> Please review this enhancement which moves the unnamed module out of 
>> the ModuleEntryTable and into the ClassLoaderData so that the MET can 
>> be lazily created only when other modules are present. The 
>> PackageTable size has also been updated to be more realistic. These 
>> two changes save the VM from losing memory space unnecessarily in the 
>> module data structures.
>>
>> Tested with JPRT and RBT tiers 2-5.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8176472
>> Open webrev: http://cr.openjdk.java.net/~rprotacio/8176472.00/
>>
>> Thank you,
>> Rachel
>