Packing 2 data points into 1 field in ThreadPoolExecutor

Alex Yursha alexyursha at
Sat Nov 29 16:13:19 UTC 2014

Hi all,

According to javadoc current implementation of ThreadPoolExecutor packs two conceptual fields ‘workerCount’ and ‘runState’ into one actual field ‘ctl’ of type AtomicInteger.

Could you please explain are there any performance or other benefits for this? It seems to complicate the class design and I can’t find the positive side of this.


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