DumpAllStacks produces a string dump of stack traces for all running goroutines.

Print is a trigger function that will emit a message to the given printf-style logger.

Watch creates a Watcher that will fire the specified trigger when the deadline specified by the duration argument expires, unless End() is called beforehand.

Watcher contains a timer that fires if an operation fails to complete within a deadline.

Trigger is a function that is fired when a deadline is missed.