supervise.py 文件源码

def __handle_event(self, msg, code):
        """Handle a single event"""
        # starting up
        if msg == b"pid":
            self.pid = code
        # main child process exiting normally
        elif msg == b"exited":
            self.returncode = code
        # main child process was signalled
        elif msg == b"killed":
            self.returncode = -code
        elif msg == b"dumped":
            self.returncode = -code
        # notification about no children
        elif msg == b"no_children":
            self.childfree = True
        # supervise exiting, in one of two ways
        elif msg == b"terminating":
            # normal termination
            self.childfree = True
            self.close()
        elif msg == b"":
            # hangup! This can only happen if supervise was SIGKILL'd (or worse)
            self.hangup = True
            self.close()