--- libev/ev.pod 2008/09/19 03:47:50 1.181 +++ libev/ev.pod 2008/09/19 03:52:56 1.182 @@ -3283,11 +3283,15 @@ better than you currently do :-) =item * often you need to talk to some other thread which blocks in the -event loop - C watchers can be used to wake them up from other -threads safely (or from signal contexts...). +event loop. -=item * some watcher types are only supported in the default loop - use -C watchers to tell your other loops about any such events. +C watchers can be used to wake them up from other threads safely +(or from signal contexts...). + +An example use would be to communicate signals or other events that only +work in the default loop by registering the signal watcher with the +default loop and triggering an C watcher from the default loop +watcher callback into the event loop interested in the signal. =back