Re: [boost] [msm] on_entry must be implemented for every initial events for every states in substatemachines.

Subject: Re: [boost] [msm] on_entry must be implemented for every initial events for every states in substatemachines.
From: Christophe Henry (christophe.j.henry_at_[hidden])
Date: 2010-09-01 13:34:33

> Hi All
>
> In the following little example see attachment,
> I have a problem that in the RunningStateMachine::State2 the on_entry
> function must be implemented with event1 and with event3 as well
> but from the logic point of view there is no possibility to call
> on_entry in RunningStateMachine::State2 with event1.
>
> actually at runtime there is no call is happening to to the function :
> void on_entry(event1 const&,FSM& ) {std::cout << "entering:
> State2:Event1" << std::endl;}
>
> but it must be defined and even implemented ( if no implementation
> provided linker error occurs).
>
> Is it a restriction/bug or I'm missing something ?
> It is only happening with initial events for substatemachines ?
> Or is there a kind of pattern to know what events can enter exit a
> state in a top of the ones present in the transition tables ?.
>
> Br.
> Richie

Hi,

I don't find this entry function or a State2. Am I missing something
or did you attach the wrong file?

Regards,
Christophe