龙卷风中断系统调用

Question

我不时得到这个错误，不知道如何调试。

Traceback (most recent call last): 
    File "/usr/lib/python2.7/dist-packages/tornado/ioloop.py", line 662, in start 
    event_pairs = self._impl.poll(poll_timeout) 
IOError: [Errno 4] Interrupted system call 

有人知道这意味着什么/什么时候发生？

我使用python 2.7和3.2.1龙卷风

更新：此代码是ioloop.py

try: 
    event_pairs = self._impl.poll(poll_timeout) 
except Exception as e: 
    # Depending on python version and IOLoop implementation, 
    # different exception types may be thrown and there are 
    # two ways EINTR might be signaled: 
    # * e.errno == errno.EINTR 
    # * e.args is like (errno.EINTR, 'Interrupted system call') 
    if (getattr(e, 'errno', None) == errno.EINTR or 
      (isinstance(getattr(e, 'args', None), tuple) and 
      len(e.args) == 2 and e.args[0] == errno.EINTR)): 
     continue 
    else: 
     raise 

Answer 1

看来你应该升级你的龙卷风的版本;此错误（EINTR从poll返回）似乎是fixed in the latest versions。