It is impossible, but it happens.

LV2013, Win7

OK, I'm working on a project that has a container window ("MegaMonitor").

On the window is a simple TAB control with 12 pages.

On each page are 6 sub-panels, nothing else.

There is a single VI, called "block" VI.

I put a single instance of this VI into each of these 72 sub-panels, and it should work.

There is a TCP stream to 10 Hz, which gets decimated in various history paintings.  Each school chooses a way to display a certain set of channels that stream.

The problem is, sometimes the process works fine and dandy, the window opens and begins to run in 3-4 seconds, it stops in less than 1 second.

Sometimes, it's like walking through mud - it takes 20-30 seconds to open and run, it takes about 60 seconds to close and recover.

I do not know what will make this work fast or slow - a reboot TENDS to run quickly the first time, but not always.

Here's the code to launch, in the container window:

I tried CALL and FORGET and CALL and COLLECT the methods, rather than the method RUN a VI - no real difference in behavior.

I tried AUTO ARRANGE REF bothe REAL and FAKE - no difference.

I need to know when the process is stopped.  BLOCK Vi, as the first thing he does, put a value in a queue of the JUDGMENT, and as the last thing he does, he takes a value.

If the CONTAINER window can find an empty queue to determine it's done.

Here's that stop Code:

There is an EVENT that triggers the window - each block stop sees this event and stops:

After hearing the event, we record a debug message:

Save us a few things in a structure PREFS:

We record another debug message:

And, as the last thing we do, queue us an element to the queue of the JUDGMENT:

The 'SAVE SOME OBJECTS' part is quite simple - simply store a structure in a table:

The thing just SEND DEBUG formats a string and sends it via UDP to a receiver somewhere else.  The behavior of sludge that happens if debugging is enabled or not.

Stay Tuned for part impossible...


Tags: NI Software

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