我尝试将相应的线程与时间戳（从现在开始的微秒数函数）匹配，就像 *jill从john [739000]收到介绍消息**和john从jill [739000]收到回复消息 *

if
     I == true ->
         M_pid!{lists:concat([Self_name," received intro message from ", Process_name , "[",erlang:now(),"]"]), self()},
         %io:fwrite(I),
         whereis(Process_name)!{Self_name, "reply",self()},
         friends(Msg, M_pid, State + 1, Self_name);
     R == true ->
         M_pid!{lists:concat([Self_name," received reply message from ", Process_name , "[",pid_to_list(Process_id),"]"]), self()},
         friends(Msg, M_pid, State + 1, Self_name)
 end

我试着从process_id改到微秒从now()。我是一个新手到厄兰。提前感谢大家！