question: Poller ( UnixFileSystem fs , SolarisWatchService watcher , int port ) { this . watcher = watcher ; this . port = port ; this . bufferAddress = unsafe . allocateMemory ( SIZEOF_PORT_EVENT * MAX_EVENT_COUNT ) ; this . fileKey2WatchKey = new HashMap < UnixFileKey , SolarisWatchKey > ( ) ; this . object2Node = new HashMap < Long , Node > ( ) ; }
target:  Create a new instance