[riot-notifications] [RIOT-OS/RIOT] sys/sched_rr: Add a round robin scheduler module (#16126)
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Thu Apr 8 12:23:32 CEST 2021
@kfessel commented on this pull request.
+ * @brief count the number of threads in a runqueue up to 2
+ * @param[in] prio the priority of the runqueue to get the length from
+ * @returns number of threads in a runqueue up to 2
+ * @retval 0 The runqueue is empty
+ * @retval 1 There is exactly one thread in the runqueue
+ * @retval 2 There are at least two threads in the runqueue
+ * @warning This API is not intended for out of tree users.
+ * Breaking API changes will be done without notice and
+ * without deprecation. Consider yourself warned!
+static inline uint_fast8_t sched_runqueue_len2(uint8_t prio)
this thing is threre to avoid the O(n) complexity by limiting n thus making its formal complexity O(1)
i will check if "count upto n" is optimized the same way.
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