preforkserver.py 文件源码

def _reapChildren(self):
        """Cleans up self._children whenever children die."""
        while True:
            try:
                pid, status = os.waitpid(-1, os.WNOHANG)
            except OSError, e:
                if e[0] == errno.ECHILD:
                    break
                raise
            if pid <= 0:
                break
            if self._children.has_key(pid): # Sanity check.
                if self._children[pid]['file'] is not None:
                    self._children[pid]['file'].close()
                del self._children[pid]