Dispatch I/O An object that manages operations on a file descriptor using either stream-based or random-access semantics. TopicsCreating a Dispatch I/O Objectdispatch_io_tManaging the File DescriptorfileDescriptorsetLimit(lowWater:)setLimit(highWater:)Synchronizing File Operationsbarrier(execute:) See AlsoSystem Event MonitoringDispatchSourceDispatch SourceDispatchIODispatchDataDispatchDataIteratorDispatch DataDispatchSourceProtocol