question: public void finished ( long work , long latency ) { finishedUpdater . getAndIncrement ( this ) ; totalWorkUpdater . getAndAdd ( this , work ) ; totalWorkSquaredUpdater . getAndAdd ( this , work * work ) ; totalLatencyUpdater . getAndAdd ( this , latency ) ; totalLatencySquaredUpdater . getAndAdd ( this , latency * latency ) ; }
target:  Indicate that we have just finished an operation on this resource