RFR: [8u] Bulk backports to sh/jdk8u

[Zhengyu Gu]

Good to me. Can not say about barrier stuffs.

-Zhengyu

On 01/16/2018 12:38 PM, Roman Kennke wrote:
> Am 16.01.2018 um 00:10 schrieb Aleksey Shipilev:
>> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk8u-20180116/webrev.01/ 
>>
>>
>> This backports all outstanding work to sh/jdk8u. This passes a few 
>> nightlies in sh/jdk10. Some
>> changes, notably moving the VM operations around required some 
>> fiddling to match the code in sh/jdk8u.
>>
>> Changes include:
>>
>>   [backport] Increase test timeouts
>>   [backport] Report fwdptr size in JNI GetObjectSize
>>   [backport] Disable verification from non-Shenandoah VMOps.
>>   [backport] Cleanup reset_{next|complete}_mark_bitmap
>>   [backport] Verifier should check klass pointers before attempting to 
>> reach for object size
>>   [backport] TestSelectiveBarrierFlags times out due to too aggressive 
>> compilation mode
>>   [backport] Shenandoah SA implementation
>>   [backport] Allow use of fp spills around write barrier
>>   [backport] Rehash VMOperations and cycle driver mechanics for 
>> consistency
>>   [backport] Minor cleanup, uses latest Atomic API
>>   [backport] Match barrier fastpath checks better
>>   [backport] ShenandoahWriteBarrierRB flag to conditionally disable RB 
>> on WB fastpath
>>
>> NIO checkIndex fix, and assorted Windows compilation fixes were already
>> backported by Zhengyu and Roman.
>>
>> Testing: hotspot_gc_shenandoah {fastdebug|release}, some benchmarks
>>
>> Thanks,
>> -Aleksey
>>
> 
> Looks good to me. Can't say for sure about C2 changes.
> 
> Roman
>