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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _reload(self):
 """reload all children posix only """

        self._run_hooks('reload')

        # Reset forktimes to respawn services quickly
        self._forktimes = []
        signal.signal(signal.SIGHUP, signal.SIG_IGN)
        os.killpg(0, signal.SIGHUP)
        signal.signal(signal.SIGHUP, self._signal_catcher)