How can I shutdown a nested actor

[xiaoyou_1314]

How can I shutdown a nested actor automatically, while the root actor exit.

I'm an AF beginner

I saw the prject template in LabVIEW named actor framwork in "create project", in which there are two nested actors are auto-shutdown when root actor exit.

I have written an actor framwork demo by myself and it runs ok without the N2 actor, but when I create the actor N2 in Actor Core.vi of the root actor, the program will not exit while I press the stop button.

I stop N1Actor by pass a normal stop msg,and I want to stop N2Actor automatically with the exit of root actor, but it doesn't work....

I've struggle with this problem for days, please help me......

[CaseyLamers1]

Without looking at the code...

If you set the boolean on "Launch Nested Actor.vi" to not stop by default you need to provide another way of stopping.

Here is the method I used prior to the automatic stopping:

When you launch the nested actor there is an enqueuer for that nested actor as an output from the "Launch Nested Actor.vi". You need to store that in the private data of your parent actor(N1Actor). So open the control for the private data of N1Actor and add a message enqueuer constant and name it appropriately (N2Actor Q). When you launch N2Actor wire the Enqueuer into a Bundle By Name on N1Actor into N2Actor Q.

Now you need to make sure that N1Actor sends a stop message at some point to N1Actor. A simple way to do this is to override Stop Core.vi. In the N1Actor override Stop Core.vi. In the override do an unbundle by name on N2Actor Q. Put a "Send Normal or EmergencyStop" with the code wired into it on the N2Actor Q.

Now when your N1Actor stops it will send N2Actor the stop message.

I suggest that once you go beyond a program convincing yourself that you can use AF that you spend some time thinking about how you want things to stop. You are about to do some real software engineering and usually you don't want to just pull the plug on the whole thing. Are you going to need to do a sequenced shutdown? Does something need to happen in one area before you can do something in another area. Map it out. Add booleans or other items to the private data of each actor that gives it the things it needs to know when and how to stop. Expect to spend some quality time doing this if you have anything sufficiently complex.

An example of a complex shutdown that has gone around previously is a drilling machine. Imagine that stopping means telling a drill to slow down, removing the drill from the hole, stopping the drill, moving the drill to a home position, powering down a motor, etc. You would not just send a stop to everything.

[DMurrayIRL]

It might just be a simple case that you are not wiring the "Launch Nested Actors" functions in series. Try below and see if that helps.

[xiaoyou_1314]

OOOh! Yes! I Got it ~ IT DOES WORK! Thank you very much~

[xiaoyou_1314]

I've got a lot of benefit from your reply, thank a lot. I feel it will take a loooong time for me to have a deeply understanding on  the AF so that I can use it expertly...