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!7

cmodule SaveStackTracesIfHighCPUUse > DynPrintLogAndEnabled {
  double period = 10.0;
  transient WaitForStableValue<Bool> high;
  
  start {
    high = WaitForStableValue(period);
    doEvery(2.0, r check);
  }
  
  void check enter {
    if (dm_osLoading()) ret;
    int load = iround(dm_processCPUPercentageRelativeToAllCores());
    high.set(load >= 50);
    if (high!) {
      time {
        S traces = renderAllThreadsWithStackTraces();
        programLog(traces);
      }
      done_always("CPU load: " + load + "%, saving stack trace");
      high.set(false); // wait another 10 seconds
    }
  }
}