def spawn_process(self):
        # we only need to generate the lease file the first time dnsmasq starts
        # rather than on every reload since dnsmasq will keep the file current
        self._output_init_lease_file()
        self._spawn_or_reload_process(reload_with_HUP=False)
Spawn the process, if it's not spawned already.
dataset/ETHPy150Open openstack/neutron/neutron/agent/linux/dhcp.py/Dnsmasq.spawn_process