code: def omp_master():
      import omp
  
      threads = 0
      executing_thread = -1
  
      if "omp parallel":
          if "omp master":
              if "omp critical":
                  threads += 1
              executing_thread = omp.get_thread_num()
      return threads == 1 and executing_thread == 0
  
label_desc: Use image node_id 1 for calling a global function with example usage: omp_master() and returns: unknown