thread_util.py 文件源码

def inc(self):
        # Copy these references so on_thread_died needn't close over self
        ident = self.ident
        _counters = self._counters

        tid = ident.get()
        _counters.setdefault(tid, 0)
        _counters[tid] += 1

        if not ident.watching():
            # Before the tid is possibly reused, remove it from _counters
            def on_thread_died(ref):
                ident.unwatch(tid)
                _counters.pop(tid, None)

            ident.watch(on_thread_died)

        return _counters[tid]