Required Instance Methodswift 6.1.2Dispatch
setCancelHandler(qos:flags:handler:)
func setCancelHandler(qos: DispatchQoS, flags: DispatchWorkItemFlags, handler: DispatchSourceHandler?) func setCancelHandler(qos: DispatchQoS, flags: DispatchWorkItemFlags, handler: DispatchSourceHandler?) s8Dispatch0A14SourceProtocolP16setCancelHandler3qos5flags7handleryAA0A3QoSV_AA0A13WorkItemFlagsVyyXLSgtF What are these?9HW5Kimport Dispatchprotocol DispatchSourceProtocolstruct DispatchQoSqos_class_t
struct DispatchWorkItemFlagstypealias DispatchSourceHandler = () -> Voidvar data: UInt { get }var handle: UInt { get }var isCancelled: Bool { get }var mask: UInt { get }func cancel() func resume() func setCancelHandler(handler: DispatchWorkItem) func setEventHandler(handler: DispatchWorkItem) func setEventHandler(qos: DispatchQoS, flags: DispatchWorkItemFlags, handler: DispatchSourceHandler?) func setRegistrationHandler(handler: DispatchWorkItem) func setRegistrationHandler(qos: DispatchQoS, flags: DispatchWorkItemFlags, handler: DispatchSourceHandler?) func suspend() func setCancelHandler(qos: DispatchQoS = .unspecified, flags: DispatchWorkItemFlags = [], handler: DispatchSourceHandler?)