Why not store the reference to notifying global
Hi all
I work with the authors of the notifications and the queues in several screws. I have strange behaviors, when I store the queue references and to notify in the global variables.
I read some entries in this forum, and some say, it's a "bad idea" that "do not", to store the arbitrators in globals.
Can someone tell me what is the real origin?
concerning
mitulatbati
Furthermore this globals is a simply bad (just a little more higher education that I really recommend to minimize the use of globals for nothing other than a State of the boolean or sometimes some scalar value), all refnums LabVIEW use a garbage collection operation.
The reason to use globals generally implies that you want to create the resource granting to one place and use somewhere else. But that often does not work with LabVIEW refnums if the producer and the consumer are not in the same VI hierarchy (for example, you create the resource in a startup VI and then spawn a VI plugin that continues while the boot VI ends). All refnums LabVIEW are automatically removed at the moment the highest level including the hierarchy VI opened refnum goes inactive. So both your plugin VI starts to work, the refnum and its object has already been deleted and therefore is not valid.
Tags: NI Software
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