Commits on Jun 20, 2024

1. Implement CellRntiRingBuffer and fix sending delay …

   * Add RingBuffer to count most frequent RNTIs over mutliple iterations
   * Move mathematic utilitites from util to new module math_util
   * Add MatchingErrorHandling
     -> Reset traffic generator on matching error
     -> Make math functions return Result<>
   
   Debug CPU usage of rntimatcher.gen thread:
   
     In the traffic_generator thread, the TrafficPattern was in every
     sending iteration (a) cloned and (b) wrapped into a new Box instance
     which lead to high frequent memory allocation.
     This induced a high delay on the traffic pattern sending and high CPU
     usage of ~80% for the traffic_generator thread.
     With this fix, the sending rate for pattern A increased from
     ~800 Kbit/s to ~12 Mbit/s!!!

   

   bastian-src committed Jun 20, 2024
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