Review Request JDK-8175797: (ref) Reference::enqueue method should clear referent before enqueuing

Alan Bateman Alan.Bateman at
Wed Mar 8 14:52:53 UTC 2017

On 07/03/2017 15:35, Mandy Chung wrote:

> This proposes to update Reference::enqueue method to clear this reference
> object before enqueuing it to the registered queue consistent with what
> the garbage collector does that clears the reference object before putting
> it in the pending queue for enqueuing.  It has been a common pattern that
> Reference::clear is called before or after enqueuing.  I consider this
> a follow-up to JDK-8071507 that soft, weak, phantom references are
> automatically cleared references when implicitly or explicitly enqueued.
> Webrev at:
This looks okay to me, I'm just wondering if FinalReference::enqueue 
should throw InternalError rather than UOE as it should never be called. 
Also I'm wondering if the property should jdk.lang.ref.XXXX to be 
consistent with other jdk.* properties.


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