srecord noeq FastCollabWorker(ICollab collab) extends Thread {
  volatile gettable long errorCount;
  volatile gettable long spinWaits;
  volatile gettable long workCount;
  volatile gettable Throwable lastError;
  
  run {
    Runnable work;
    
    while ((work = collab.grabWork()) != collab.DONE) {
      try {
        if (work != null) {
          ++workCount;
          work.run();
        } else
          ++spinWaits;
      } catch e {
        ++errorCount;
        lastError = e;
      }
    }
  }
}