Getting summary task info without excessive memory use

dnadler · July 26, 2026, 7:34pm

Thanks to everyone at AWS who helped get this pull request in shape and merged!
Best Regards, Dave

github.com/FreeRTOS/FreeRTOS-Kernel

Add uxTaskCallForEachTask, and refactor uxTaskGetSystemState to use it. (#1439)

main ← DRNadler:main

opened 12:11AM - 29 Jun 26 UTC

DRNadler

+148 -75

Get task statistics for all tasks with less memory use, by doing it one task at …a time. Provide a public iterator over all tasks for diagnostics. @aggarg - This is a better refactoring and does not increase stack space use (from #1424): - The public iterator function is cleaner (passes task handle and state plus context to callback). - Does not replicate task location code as in your suggested patch. - Based on the latest development head for easier merge. - Retested in my application. Hope you approve! Description ----------- Add uxTaskCallForEachTask, which is the iteration portion of last released uxTaskGetSystemState. uxTaskCallForEachTask calls a user-provided callback once for each task (with the task handle and state, plus a context). Refactor uxTaskGetSystemState so that it uses uxTaskCallForEachTask to fill in the pre-allocated array of TaskStatus_t, preserving the existing uxTaskGetSystemState API for current users. Test Steps ----------- 1. Use uxTaskCallForEachTask to observe task statistics for each task in the system. 2. Compare existing uxTaskGetSystemState output to new version. Checklist: ---------- - [x ] I have tested my changes. No regression in existing tests. - [ ] I have modified and/or added unit-tests to cover the code changes in this Pull Request. Related Issue ----------- Discussed on forum but no Github Issues. By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

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Getting summary task info without excessive memory use

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