RFR: 6823565: Excessive use of HandleList class in de-serialization code causes OutOfMemory

[Aleksey Shipilev]

On 10/25/2015 04:27 AM, Claes Redestad wrote:
> when deserializing objects with references to themselves,
> ObjectInputStream pointlessly marks the object as a dependency of
> itself, which increases memory required to deserialize certain memory
> graphs.
> 
> bug: https://bugs.openjdk.java.net/browse/JDK-6823565
> webrev: http://cr.openjdk.java.net/~redestad/6823565/webrev.01/

Looks fine. A comment in markDependency should probably be updated to
explain that self-referenced objects are skipped.

Thanks,
-Aleksey