In my App code, I am creating a timer object with a callback function.
The timer looks something like this:
app.tenMinuteTimer = timer('ExecutionMode', 'fixedRate', 'Period', 600, 'TimerFcn', @(~,~)app.createNewLogFile())
start(app.tenMinuteTimer);
The callback looks something like this:
function createNewLogFile(app)
if isempty(app) || ~isvalid(app)
error('WARNING: App object is invalid in createNewLogFile context');
I am seeing the error message intermittently with this code, but only intermittently (about ~5% of the time over long durations of running the App). I would really like to understand what could be causing this to happen intermittently, how to confirm a root cause, and/or how to do this in a more robust way altogether.
I believe that memory issues can be ruled out, or any other issues relating to long-duration testing. I can observe this problem within a relatively short test. I suspect it may have to do with task scheduling on the host running the App, since the App is doing multiple things.
Heavy apologies for editing this post multiple times.. I will not change it again from now.
