[libvirt] Re: [PATCH 2/6] Introduce monitor 'wait' command (v2)

The wait command will pause the monitor the command was issued in until a new event becomes available. Events are queued if there isn't a waiter present. The wait command completes after a single event is available. Today, we queue events indefinitely but in the future, I suspect we'll drop events that are older than a certain amount of time to avoid infinitely allocating memory for long running VMs. To make use of the new notification mechanism, this patch introduces a qemu_notify_event() API. This API takes three parameters: a class which is meant to classify the type of event being generated, a name which is meant to distinguish which event in the class that has been generated, and a details parameters which is meant to allow events to send arbitrary data with a given event. v1->v2 - Added a -d flag to poll for events instead of waiting - Made old events expire after 10 minutes