RFR: 8203028: Simplify reference processing in light of JDK-8175797

[Thomas Schatzl]

Hi,

On Sun, 2018-05-20 at 17:12 +0200, Kim Barrett wrote:
> > On May 15, 2018, at 12:09 AM, Kim Barrett <kim.barrett at oracle.com>
> > wrote:
> > New webrev, rebased to include JDK-8201491:
> > http://cr.openjdk.java.net/~kbarrett/8203028/open.01/
> > 
> > New webrevs with above changes:
> > full: http://cr.openjdk.java.net/~kbarrett/8203028/open.02/
> > incr: http://cr.openjdk.java.net/~kbarrett/8203028/open.02.inc/
> 
> Following up on a suggestion from Mark Reinhold in the discussion of
> JDK-8203327
> on the core-libs list, I’ve added the following comment to the
> Reference.queue field.
> 
> diff -r 98982cddbac0 -r 2429129c4d48
> src/java.base/share/classes/java/lang/ref/Reference.java
> --- a/src/java.base/share/classes/java/lang/ref/Reference.java	
> Mon May 14 18:01:36 2018 -0400
> +++ b/src/java.base/share/classes/java/lang/ref/Reference.java	
> Sun May 20 11:06:48 2018 -0400
> @@ -131,6 +131,14 @@
>  
>      private T referent;         /* Treated specially by GC */
>  
> +    /* The queue this reference gets enqueued to by GC notification
> or by
> +     * calling enqueue().
> +     *
> +     * When registered: the queue with which this reference is
> registered.
> +     *        enqueued: ReferenceQueue.ENQUEUE
> +     *        dequeued: ReferenceQueue.NULL
> +     *    unregistered: ReferenceQueue.NULL
> +     */
>      volatile ReferenceQueue<? super T> queue;
>  
>      /* The link in a ReferenceQueue's list of Reference objects.
> 

  looks good to me.

Thomas