multithreading - MailboxProcessor and interaction with GUI Thread -

i've created agent interacting gui means of synchronizationcontext:

type asyncworker(id:int) =     let someevent = new event<int * string>()     let errorevent = new event<_>()     let synccontext = synchronizationcontext.current      let f (inbox: mailboxprocessor<_>)  =          let rec loop () = async {                     let! message = inbox.receive ()             ...             synccontext.raiseevent someevent (id, str)         } 

is there danger in that? if had 20 agents? these raised events synchronized? suppose have long time calculating function event. can sure other agents' event handlers waiting termination?