test_watchdog.py 文件源码

def test_wait_or_die_kills(self):
        """
        wait_or_die eventually falls back to KILLing a process, after waiting
        and terminating don't work.
        """
        output_filename = self.makeFile("NOT RUN")
        self._write_script(
            ("#!%s\n"
             "import signal, os\n"
             "signal.signal(signal.SIGTERM, signal.SIG_IGN)\n"
             "file = open(%r, 'w')\n"
             "file.write('RUN')\n"
             "file.close()\n"
             "os.kill(os.getpid(), signal.SIGSTOP)\n"
             ) % (sys.executable, output_filename))

        self.addCleanup(setattr,
                        landscape.client.watchdog, "SIGKILL_DELAY",
                        landscape.client.watchdog.SIGKILL_DELAY)
        self.addCleanup(setattr,
                        landscape.client.watchdog, "GRACEFUL_WAIT_PERIOD",
                        landscape.client.watchdog.GRACEFUL_WAIT_PERIOD)
        landscape.client.watchdog.GRACEFUL_WAIT_PERIOD = 1
        landscape.client.watchdog.SIGKILL_DELAY = 1

        waiter = FileChangeWaiter(output_filename)
        self.daemon.start()
        waiter.wait()
        self.assertEqual(open(output_filename).read(), "RUN")
        return self.daemon.wait_or_die()