core/cib: Add a prominent warning about thread safety#21401
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maribu merged 1 commit intoRIOT-OS:masterfrom Apr 14, 2025
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Users of CIB may easily be mislead to believing that it is generally thread safe, or at least thread safe as long as there is a single consumer and producer. Neither is the case, which now is clearly communicated in the API doc. Co-authored-by: mguetschow <[email protected]>
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Contribution description
Users of CIB may easily be mislead to believing that it is generally thread safe, or at least thread safe as long as there is a single consumer and producer. Neither is the case, which now is clearly communicated in the API doc.
Testing procedure
The generated API should now make it clear that CIB is not thread safe. It should especially be clear that thread safety cannot even be assumed in special cases (such as single consumer, single producer, inherently atomic access to
unsigned int), but requires the caller to ensure exclusive access tocib_tunder any circumstances.Issues/PRs references
See e.g. #21400 for an example where the calling side got their feet shot.