def dumpStats(self):
        """
        Dump some plain-text informational messages to the log about the state
        of this L{ThreadPool}.
        """
        log.msg('waiters: %s' % (self.waiters,))
        log.msg('workers: %s' % (self.working,))
        log.msg('total: %s'   % (self.threads,))

        Dump some plain-text informational messages to the log about the state
        of this L{ThreadPool}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/threadpool.py