dispatch_time_t An abstract representation of time. Declarationtypealias dispatch_time_t = UInt64 TopicsWell-Defined TimesDISPATCH_TIME_NOWDISPATCH_TIME_FOREVERTime Multiplier ConstantsUSEC_PER_SECNSEC_PER_SECNSEC_PER_MSECNSEC_PER_USEC See AlsoTime ConstructsDispatchTimeDispatchWallTimeDispatchTimeIntervalDispatchTimeoutResultDISPATCH_WALLTIME_NOWWall Time Constants