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Thoric

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Everything posted by Thoric

  1. For this to be useful in my application, which is networked and takes advantage of the TCP Messenger, the UDP port would need to be configurable. Also, our network admins have strict policies which could interfere with UDP. Although it's allowed, it can't cross certain hardware boundaries between networks. So although we can get TCP Messenger to cross networks, UDP would likely fail.
  2. 2017SP1 is fine for me. We have a generic configuration actor that uses JSON. Will be interested to compare your approach, if you include one in the toolkit.
  3. I've narrowed this down to this probable cause: If an actor in a library that's drawn in as an unneeded dependency uses "TCP Actor" to make it remotely accessible then the build of the structure fails when "Remove unused elements from Libraries" is set in the app builder, as is the default for LabVIEW. I've attached code that demonstrates the build error (LV2017) and if you remove the TCP Service subVI from the actor UnusedClassWithinLibrary.lvclass the build then succeeds. @drjdpowell Any clues as to why using the TCP service features on an unused actor within a library could c
  4. My fix for now is to move the "IGOR_Sync.lvclass" actor out of the containing library "IGOR Sync.lvlib". This ensures the actor isn't present and therefore not "removed as an unused item from the library" during build. But I think I need to get to the bottom of why this perfectly valid situation is creating a build failure. Any thoughts? Is the class structure/tree being broken in the builder when the unneeded actor is removed from the library? That would be a LabVIEW builder bug.
  5. OK, so I made a Source Distribution out of the failing actor, which included all it's references/dependencies. Wrapped this one actor and the copied dependencies into a new project, created a build spec and it fails. Good. So I have a test environment. Checked into SCC. Remove ActorNR.vi from Class I removed ActorNR.vi from the class (with the rest of the class content to maintain accessibility) changed the DD terminal to Optional. It still fails. If I run ActorNR.vi it works fine. So this problem isn't necessarily related to the DD requirement. Mass Compile I don't think this is
  6. So I started by cloning the first actor that has a problem and creating a build spec for it, then removing content bit by bit until it built OK. It was only happy when I removed the last reference to a typedef cluster that belongs to another library (which I'll call LibraryA). I started again with the same actor, cloned it, checked it still doesn't build, removed only references to LibraryA's typedef by "disconnecting from typedef" wherever it appears in the actor and it then built ok straight away. The fix has nothing to do with all the other things I'd removed, just typedef linkages to
  7. OK, good idea. So I painstakingly built each actor independently and 11 built fine, 10 failed. I think some of those that failed are only failing because they call one of the other failing child actors, so of the 10 failures only 5 are at the bottom of the tree hierarchy and I think these are the culprits. So now, the question is "What about these 5 failing actors is causing a build failure?". Do they exclusively have something in common? Their roles are: One is Dialogue style GUI Editor for populating an Array - a relatively simple actor. Another is a Dialogue style GU
  8. I wanted to get back to this thread because you've effectively said that by using dynamic-despatch the actor launcher is pulling in virtually all my code and therefore it is near impossible to tell what's wrong; implying that there is a broken VI somewhere in my code that prevents the app builder from completing. But I'm certain there isn't anything broken. The code runs in the IDE. If I open all VIs there are none broken. None. So I don't see how your argument stands. I need to discuss further because I'm encountering annoyances associated with the workaround to disable "Remove unused members
  9. Thanks JKSH: Closed LabVIEW and cleared the compile cache - same error Altered the Build Spec to not "Remove unused polymorphic VI instances" - same error Altered the Build Spec to not "Remove unused members of project libraries" - it built Rechecked "Remove unused polymorphic VI instances" - it still built. In Short: The key is disable "Remove unused members of project libraries". Can't recall having to do this before, but hey ho. Whatever works!
  10. James, Can you advise on the following build error using Messenger library please. My code is not broken. It runs from source perfectly fine.
  11. Hi Igor. In your Readme you state "If input string is 38, 39, 86, 87, 134 or 135 bytes long, the output is incorrect." I tested all string lengths up to 1608 and it failed for 67 strings (various lengths). Do you know why your library doesn't work for certain length input strings, and might it also be wrong for other lengths too? Maybe I can help determine a fix if you have any clues where to look?
  12. I was adding a 'quick' feature to my framework - in retrospect it wasn't the right approach so I've changed my tactic and now I have a better implementation that doesn't require this actor knowing the message origins. I appreciate knowing now though that the addresses are directly identifiable, even if we cannot extract any information about the address from it. Thanks James
  13. James, Is it possible to glean information about the sender of a message? In my Actor I receive a message and it would be useful if I could learn some originator details, namely the Name of the Actor (VI Name perhaps). I wonder if it's possible to learn this info from the Reply to... indicator of a Read Reply Address call? A little bit of background - I want my actor to be smart enough to recognise where a message has come from. It's 'actor agnostic', except for one in particular, and if packets come from that one particular actor I want to perform additional tasks. I can't pla
  14. Yeah, playing with this I can see that there's no native way to gracefully handle this. There are tools out there for creating custom popup menus, you can use one of these to generate a dynamic menu that appears beneath the ring control, just as the native control would?
  15. Now I'm intrigued. I want to play to discover, but I might not get to a PC for a while, so apologies if it takes me a little while to reply.
  16. What's wrong with using the Mouse Down? filter event to detect a click?
  17. Interesting - these offerings are significant effort. I was hoping for something simpler, but I wonder perhaps if the use of a 'globalised' notifier is the solution I need. As you state, it's for a limited and clearly defined purpose. I'd be interested to see suggestion 1, (the helper loop, with the main actor template becoming the manager of an internalised worker), provided as another template option from the scripting tools. Thanks for the advice James - professional as always!
  18. James, This may have been answered before, so forgive me if it has. The actor model you use ensures sequential execution of the Event Structure and State Machine. This means the state machine can complete its task(s) without interference from the event structure, because the event structure literally cannot react to any incoming messages until the state machine completes its stack and yields execution. But what if you have a case where this is unhelpful? For example, consider that the state machine is in the middle of a series of state changes, controlling hardware and taking me
  19. And the problem has returned. No changes. This has to be a race condition. Sadly I no longer have the diagnostic code in there so I have no way to see if the Register had any Observers. I'll reintroduce the code and do some repeat testing (multiple reboots of CompactRIO). Update: I can no longer get it to fail. With or without the code segment above looking at the register, it now always works. And I've literally changed nothing else. ...I wonder if a career shift into crop farming would prove less stressful...
  20. OK, so I think I worked it out. I recover the DVR and run ObsReg to Table.vi and export to file. Unfortunately, introducing this diagnosis code caused the problem to vanish. With this code in place, the issue does not occur. Out of interest, the resultant table contains: All State ObserverSet; 0: EventMessenger (0x79B00000) All Events ObserverSet; 0: EventMessenger (0x79B00000) All Errors -- We have one Event Observer established. Hence the message was received and no problem occurred. For sanity I removed the diagnostic code and recompiled it, and the problem is still gon
  21. Hi James, I tried your probe anyway - unfortunately it causes a deployment error (see image). Without investigating, I'm guessing there's something in there not compatible with RT? I already log the 'states' to a log file, which is how I know if the appropriate states are being fired in each actor. Plus I log all errors to a separate log file. Trying your ideas: 1) Already made that change, just in case 2) Double checked wiring - it's fine. So I took a look at "vi.lib\drjdpowell\Messenging\ObserverRegister\ObsReg Core\ObsReg to Table.vi” which shows how to take an ObsRe
  22. James, the code works in development mode, so using the probe (assuming it works on RT) will show no issues. It's only once built into an executable and deployed that the problem occurs. Once built, I don't see how I can use probes :-(
  23. So, the first thing I tried was a delay between registering for notifications, and sending the first message. This fixed it. So there's a race condition. Basically I can assume that the registration request is performed asynchronously and is not complete before the subactor sends back a message in response to the "Deploy_FPGA" message. James - how can I ensure a regsitration request is complete before the subactor sends a notification?
  24. Errors are captured in the final "" state, so if there was an error it would be sent to the caller (Main) where I log all errors. I don't see any such error. Also, no TCP usage. In the meantime I just quickly created a new project with two actors, one calls the other, and proven: 1. The Self:Initialise state cannot send a notification to the caller - it won't receive it (you knew this, bug 13) 2. Sending a message to the subactor directly after registering for notifications, which gets the subactor to send a reply, does work. But it didn't in my actual project work, only in the
  25. I tried avoiding the use of Self:Initialise by sending a message to the subactor immediately after registering for notifications. It still didn't work:
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