Python Threading in Ignition

Ignition
1

Hi,

I’d like to ask if there’s an equivalent Ignition module for python threading?
What i want to do is to run a checker for idle time while the application is connected to the actual tool.

I know this is possible to do in python threading. But i need the thread to keep running while the application is up. Should i fire up the thread on the start up script? will the thread or function be able to run until i close the application?

Any idea guys?

Thank you!
PS : I’ve researched about invokeasnychronous. Am i right that i creates a new thread for the function being called?

2

Hi Ella,

Yes, invokeasnychronous creates a new thread for the function that is called.

Best,

3

Thanks for confirming Nick.

So is invokeasynchronous same with threading in python?

4

They both use Java threads, so they are similar.

5

But is it possible to do multi threading in ignition?

6

Yes, you are doing multi-threaded programming when you use system.util.invokeAsynchronous and system.util.invokeLater functions.

Each time you call system.util.invokeAsynchronous you are creating a new Java thread to execute the function argument in.

The PA Power Scripting Module has more multi-threading tools, specifically the pa.thread.multiTask function and @run.

Best,