úÎÍ      +A value indicating there is no such event. KThe event system can either be initilized and passed as state or a global G system can be declared using gEvtSys = unsafePeformIO initEventSystem ?IDs the program can use to cancel previously scheduled events. SThe only way to get an event system is to initilize one, which sets internal TVars A and sparks two threads (one to expire events, one to look if you' ve added an + event expiring before the current alarm). NMain thread that delays till the alarm time then executes any expired events.  Asynchronous  @ exceptions might occur to indicate a new, earlier, alarm time. LWorker function for expireEvents - the parent simply catches the exceptions ?Determines which events are expired, running all their actions Execute expired events 3Runs all provided events (which must have expired) NAdd an *action* to be performed at *time* by *system*, returning a unique id. VAtomically add an action to be performed at specified time and returning a unique id. <Cancel an event from the system, returning True on success. GAtomically cancel an event from the system, returning True on success. LTracks the alarm time and the earliest event. If an earlier event is added N the alarm time is updated and TimerReset is thrown to the expireEvent thread LReturns the time difference in microseconds (potentially returning maxBound <= the real difference)   !   "      !"#$control-event-0.2 Control.EventControl.Event.Timeout EventSystemEventIdnoEventinitEventSystemaddEvent addEventSTM cancelEventcancelEventSTM evtSystemSize TimeoutTag addTimeoutaddTimeoutAtomic cancelTimeout TimerResetEvtSysesEventsesThreadesAlarm esNewAlarm esExpiredEvtIdEventSet EventNumber singletonSet expireEvents expireEvents' runExpiremonitorExpiredQueue runEvents trackAlarmtimeDiffToMicroSecTTag getExpireTime