arbiter.py 文件源码

def init_signals(self):
        """\
        Initialize master signal handling. Most of the signals
        are queued. Child signals only wake up the master.
        """
        # close old PIPE
        if self.PIPE:
            [os.close(p) for p in self.PIPE]

        # initialize the pipe
        self.PIPE = pair = os.pipe()
        for p in pair:
            util.set_non_blocking(p)
            util.close_on_exec(p)

        self.log.close_on_exec()

        # initialize all signals
        [signal.signal(s, self.signal) for s in self.SIGNALS]
        signal.signal(signal.SIGCHLD, self.handle_chld)