【发布时间】:2012-05-07 03:05:44
【问题描述】:
我写了一些代码来测试simple_one_for_one supervisor,但它不能工作,代码是:
-module(test_simple_one_for_one).
-behaviour(supervisor).
%% API
-export([start_link/0, start_fun_test/0]).
%% Supervisor callbacks
-export([init/1]).
-define(SERVER, ?MODULE).
%%--------------------------------------------------------------------
start_link() ->
{ok, Pid} = supervisor:start_link({local, ?SERVER}, ?MODULE, []).
start_fun_test() ->
supervisor:start_child(test_simple_one_for_one, []).
init([]) ->
RestartStrategy = simple_one_for_one,
MaxRestarts = 1000,
MaxSecondsBetweenRestarts = 3600,
SupFlags = {RestartStrategy, MaxRestarts, MaxSecondsBetweenRestarts},
Restart = permanent,
Shutdown = 2000,
Type = worker,
AChild = {fun_test_sup, {fun_test, run, []},
Restart, Shutdown, Type, [fun_test]},
io:format("start supervisor------ ~n"),
{ok, {SupFlags, [AChild]}}.
当我跑步时
test_simple_one_for_one:start_link().
和
test_simple_one_for_one:start_fun_test().
在 erl shell 中,它给了我错误:
test_simple_one_for_one:start_fun_test()。 ** 异常退出:{noproc,{gen_server,call, [test_simple_one_for_one,{start_child,[]},infinity]}} 在函数 gen_server:call/3 (gen_server.erl, line 188)
【问题讨论】:
-
当 start_link 和 start_fun_test 被调用时,代码看起来还可以并且工作得很好。这个错误告诉你在 start_link 之前运行 start_fun_test。