Hello,
I m using Keil RTX on STM32F411. My IDE is Keil too.
I have a task to maintain and upgrade previous code where RTX is being used.
I need to debug a Stack Overflow (seen in System and Thread Viewer) and for that I need to identify the first overflow event to dig in that thread.
We can learn about hooks in freeRTOS here: https://www.youtube.com/watch?v=vBoP4Q6rf5g&list=PLnMKNibPkDnFeFV4eBfDQ9e5IrGL_dx1Q&index=20
The idea of having a callback when a Stack Overflow event happens is great.
Can some one give me a Tip, how to implement Hook in RTX or any approach to deal with Stack Overflow in RTX?
Another question is, I see a lot of Stack Overflows in " System and Thread Viewer" but would expect my System to fail totally, but instead the majority (not all) of Threads keep running.
I mean, this code shouldn't be running, one stack overflow would be enough to ruin the application. Is " System and Thread Viewer" info reliable?
br
Another trick I have used is where the idler thread simply enumerates all threads and calls osThreadGetStackSpace for each, maintaining a list of minimum values and printing each time a thread lowers its space remaining. You could print to SWO or some other channel.Of course, the idler only runs when all real threads are asleep/blocked, so again this technique won't show you the MOST space used by any thread, but will give clues as to when a thread approaches using all of its allocated space.