skynet.kill(address)可以将服务退出吗

[ericzhanchina]

msgagent的退出我原来在logout的方法中执行的，后来我把他改到了gate里面，调用skynet.kill(u.agent)来结束msgagent，现在跑了一段时间，发现这些服务并没有被终止，还都存活着呢，请教高手，是这个skynet.kill没有起作用吗。
gated.lua

-- call by login server
function server.kick_handler(uid, subid)
	log.info("[2]gate try to kick %s",uid)
	local u = users[uid]
	if u then
		if not subid then
			subid = u.subid
		end
		local username = msgserver.username(uid, subid, servername)
		assert(u.username == username)
		-- NOTICE: logout may call skynet.exit, so you should use pcall.
		local ok, result = pcall(skynet.call, u.agent, "lua", "logout")
		if ok then
			skynet.kill(u.agent)
			log.info("[7]%s is kicked by gate and agent %s is killed", username,u.agent)
			return uid
		else
			log.error("%s is not kicked by gate %s,try to kick by hand",username,result)
			msgserver.logout(u.username)
			users[uid] = nil
			username_map[u.username] = nil
			local ok = cluster.call(nodename, "@" .. servicename, "logout", uid, subid)
			skynet.kill(u.agent)
			log.info("[7]%s is kicked by hand and agent %s is killed", username,u.agent)
			return uid
		end

msgagent.lua

local function logout(args)
    save2mysql()
    if gate then
        --clean the msgagent status
        local ok = skynet.call(gate, "lua", "logout", userid, subid)
        log.info("[6]agent %s call gated logout %s return = %s",skynet.self(),userid,util.dump(ok))
    end
    local runtime = skynet.getenv("runtime")
    if userdata.user and userdata.user[tok_game.t_user.id] then 
        proxy.asyncdata("srem",string.format("analysis:userid:hot:%s:all",runtime),userdata.user[tok_game.t_user.id])
    end
    unsubscribe()
    --clean userdata here if we don't call skynet.exit()
    -- skynet.exit()  
end