question: public void poll ( final UdpSocketStatisticsHandler handler ) { this . statisticsHandler = handler ; try { fileLoader . load ( ) ; final ByteBuffer buffer = fileLoader . getBuffer ( ) ; lineParser . reset ( ) ; lineParser . handleToken ( buffer , buffer . position ( ) , buffer . limit ( ) ) ; } finally { this . statisticsHandler = null ; } monitoredSockets . purgeEntriesOlderThan ( updateCount ) ; updateCount ++ ; }
target:  Read from monitored file, report any changed values for monitored socket statistics. Not thread-safe, only call from a single thread.