[concurrency-interest] ConcurrentHashMapV8

Jason T. Greene jason.greene at redhat.com
Tue Aug 30 12:13:31 EDT 2011


On 8/28/11 2:24 PM, Doug Lea wrote:
>
> A candidate replacement for java.util.concurrent.ConcurrentHashMap
> is now available as jsr166e.ConcurrentHashMapV8. This version
> is much more amenable to upcoming support for aggregate
> parallel operations (including, already, method "computeIfAbsent'
> using a stand-in MappingFunction type).
>
> The internal design is interestingly different.
> Read the internal documentation for details.
> (http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/jsr166e/ConcurrentHashMapV8.java?view=log)

Wow! This implementation has a very nice set of attributes, in 
particular the memory efficiency. I look forward to giving it a spin.

-- 
Jason T. Greene
JBoss, a division of Red Hat


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