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我有一个table过程,它创建 apid作为board其状态的一部分go()

我正在测试终止表也会终止董事会。但董事会并没有像预期的那样停止。

我的测试:

kills_board_test() ->
  {ok, Table} = table:go(),
  {BoardPid, _ ,_ } = s:s(Table, info),
  gen_server:stop(Table),
  undefined = process_info(BoardPid).

table.erl我实施:

handle_call(stop, _From, State = {Board, _, _}) ->
    gen_server:stop(Board),
    {stop, normal, shutdown_ok, State};

我的结果是:

> 6>table_test:test(). table_test: kills_board_test (module
> 'table_test')...*failed* in function table_test:kills_board_test/0
> (table_test.erl, line 8)
> **error:{badmatch,[{current_function,{gen_server,loop,6}},
>            {initial_call,{proc_lib,init_p,5}},
>            {status,waiting},
>            {message_queue_len,0},
>            {messages,[]},
>            {links,[]},
>            {dictionary,[{'$initial_call',{board,init,1}},
>                         {'$ancestors',[<0.351.0>,<0.349.0>]}]},
>            {trap_exit,false},
>            {error_handler,error_handler},
>            {priority,normal},
>            {group_leader,<0.350.0>},
>            {total_heap_size,233},
>            {heap_size,233},
>            {stack_size,9},
>            {reductions,152},
>            {garbage_collection,...},
>            {...}]}   output:<<"Table Terminating.{<0.352.0>,
>                    #{current_player => x,result => playing},
>                    #{o => {<0.355.0>,<0.356.0>},x => {<0.353.0>,<0.354.0>}}} ">>
> 
> =======================================================   Failed: 1.  Skipped: 0.  Passed: 0. error 

编辑:

我看到文字“终止”,但我知道停止会在返回之前等待终止完成。

4

1 回答 1

1

您的自定义停止行为在handle_call(stop, ...)但您正在调用gen_server:stop/1它不会调用该代码。你可能打算这样做gen_server:call(Table, stop)

也就是说,您可能希望将此停止行为移至Module:terminate/2,它自动调用gen_server:stop(除非您有理由在 a 中实现此行为handle_call):

terminate(_Reason, _State = {Board, _, _}) ->
  gen_server:stop(Board)

现在,gen_server:stop(Table)将调用此回调并Board自动停止。

于 2017-07-18T15:26:59.013 回答