From: Doug Lea <dl(a)cs.oswego.edu&gt; Subject: [concurrency-interest] ConcurrentHashMapV8 now supports Spliterator Date: July 4, 2012 1:47:51 AM GMT+02:00 To: &quot;Concurrency-interest(a)cs.oswego.edu&quot; <Concurrency-interest(a)cs.oswego.edu&gt; In addition to including the compute/computeIfAbsent changes discussed on this list last week, the updated version of ConcurrentHashMapV8 contains basic support for performing parallel (normally via ForkJoin) operations on the keys, values, or entries of a map. The added Spliterator interface (see http://gee.cs.oswego.edu/dl/jsr166/dist/jsr166edocs/jsr166e/ConcurrentHas...) is for now a nested interface that contains a subset of some functionality likely to be available in JDK8. There are also three new methods to provide them: public Spliterator<K> keySpliterator() public Spliterator<V> valueSpliterator() public Spliterator<Map.Entry<K,V>> entrySpliterator() See the Spliterator javadocs for a usage example. These methods only provide a foothold for writing your own parallel operations. CHMV8 doesn't now itself supply the map, filter, reduce, forEach, etc operations expected to be supported under JDK8 lambda-ized collections. However, they do enable those familiar with ForkJoin programming to get a head start evaluating such code you write yourself. If you do this, please report back any interesting experiences. The usual links: * API specs: http://gee.cs.oswego.edu/dl/jsr166/dist/jsr166edocs/ * jar file: http://gee.cs.oswego.edu/dl/jsr166/dist/jsr166e.jar (compiled using Java7 javac). * Browsable CVS sources: http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/jsr166e/ -Doug _______________________________________________ Concurrency-interest mailing list Concurrency-interest(a)cs.oswego.edu http://cs.oswego.edu/mailman/listinfo/concurrency-interest