RFR 8005704: Update ConcurrentHashMap to v8 (original) (raw)

Chris Hegarty chris.hegarty at oracle.com
Mon May 27 14:30:17 UTC 2013


Since my previous failed attempt to update the j.u.c. world, this review is for the update to j.u.c.ConcurrentHashMap v8 from Doug's CVS.

http://cr.openjdk.java.net/~chegar/8005704/ver.00/specdiff/java/util/concurrent/package-summary.html http://cr.openjdk.java.net/~chegar/8005704/ver.00/webrev/

A few initial comments:

  1. CHM no longer extends AbstractMap. I guess this should not be a problem in the real world, and I guess users would not be too surprised by instanceof checks. Just worth highlighting the change for compatibility.

  2. KeySetView.spliterator()

    I guess the API should also report CONCURRENT, NONNULL & SUBSIZED? And the implementation should return SIZED too?

  3. Value/EntrySpliterator.spliterator() should return SIZED?

  4. Does is make sense for KeySetView to be Serializable? It looks a little odd with value as its only field.

-Chris.



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