[9] RFR (L): 8015774: Add support for multiple code heaps

[Tobias Hartmann]

Thank you, Erik.

Best,
Tobias

On 29.08.2014 15:36, Erik Gahlin wrote:
> Only looked at event tracing metadata, but trace.xml and 
> tracetypes.xml looks good
>
> /Erik
>
> Tobias Hartmann skrev 2014-08-28 14:09:
>> Hi,
>>
>> the segmented code cache JEP is now targeted. Please review the final 
>> implementation before integration. The previous RFR, including a 
>> short description, can be found here [1].
>>
>> JEP: https://bugs.openjdk.java.net/browse/JDK-8043304
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8015774
>> Implementation: http://cr.openjdk.java.net/~thartmann/8015774/webrev.03/
>> JDK-Test fix: 
>> http://cr.openjdk.java.net/~thartmann/8015774_jdk_test/webrev.00/
>>
>> Changes since the last review:
>> - Merged with other changes (for example, G1 class unloading changes 
>> [2])
>> - Fixed some minor bugs that showed up during testing
>> - Refactoring of 'NMethodIterator' and CodeCache implementation
>> - Non-method CodeHeap size increased to 5 MB
>> - Fallback solution: Store non-method code in the non-profiled code 
>> heap if there is not enough space in the non-method code heap (see 
>> 'CodeCache::allocate')
>>
>> Additional testing:
>> - BigApps (Weblogic, Dacapo, runThese, Kitchensink)
>> - Compiler and GC nightlies
>> - jtreg tests
>> - VM (NSK) Testbase
>> - More performance testing (results attached to the bug)
>>
>> Thanks,
>> Tobias
>>
>> [1] 
>> http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2014-April/014098.html
>> [2] https://bugs.openjdk.java.net/browse/JDK-8049421
>