How to use fork_waitfor_timed method in autotest

Best Python code snippet using autotest_python

parallel.py

Source:parallel.py

...73    (pid, status) = os.waitpid(pid, 0)74    _check_for_subprocess_exception(tmp, pid)75    if status:76        raise error.TestError("Test subprocess failed rc=%d" % (status))77def fork_waitfor_timed(tmp, pid, timeout):78    """79    Waits for pid until it terminates or timeout expires.80    If timeout expires, test subprocess is killed.81    """82    timer_expired = True83    poll_time = 284    time_passed = 085    while time_passed < timeout:86        time.sleep(poll_time)87        (child_pid, status) = os.waitpid(pid, os.WNOHANG)88        if (child_pid, status) == (0, 0):89            time_passed = time_passed + poll_time90        else:91            timer_expired = False...

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