RFR: JDK-8202776: Modularize GC allocations in runtime

[Roman Kennke]

Hi Aleksey, Erik,

thanks for reviewing and helping with this!

Moved mem_allocate() under protected:
Incremental:
http://cr.openjdk.java.net/~rkennke/JDK-8202776/webrev.01.diff/
Full:
http://cr.openjdk.java.net/~rkennke/JDK-8202776/webrev.01/

Good now?

Thanks,
Roman


> Hi Aleksey,
> 
> Sounds like a good idea.
> 
> /Erik
> 
>> On 4 Jun 2018, at 17:56, Aleksey Shipilev <shade at redhat.com> wrote:
>>
>> On 06/04/2018 05:29 PM, Erik Österlund wrote:
>>>>> I agree the GC should be able to perform arbitrary allocations the way
>>>>> it wants to.
>>>>> However, I would prefer to do it this way:
>>>>> http://cr.openjdk.java.net/~eosterlund/8202776/webrev.00/
>>
>> This looks good. I think we better hide mem_allocate under "protected" now, so we would have:
>>
>> protected:
>>   // TLAB path
>>   inline static HeapWord* allocate_from_tlab(Klass* klass, size_t size, TRAPS);
>>   static HeapWord* allocate_from_tlab_slow(Klass* klass, size_t size, TRAPS);
>>
>>   // Out-of-TLAB path
>>   virtual HeapWord* mem_allocate(size_t size,
>>                                  bool* gc_overhead_limit_was_exceeded) = 0;
>>
>> public:
>>   // Entry point
>>   virtual HeapWord* obj_allocate_raw(Klass* klass, size_t size,
>>                                      bool* gc_overhead_limit_was_exceeded, TRAPS);
>>
>> -Aleksey
>>
>