Re: [Boost-users] [statechart] - delay of handlinmg a specific event?

From: Andreas Huber (ahd6974-spamgroupstrap_at_[hidden])
Date: 2007-01-20 05:58:31

Hi Oliver

Oliver.Kowalke_at_[hidden] wrote:
> Hello,
> Is it possible to delay the handling of an event?
>
> If I've three states X, Y and Z; initial state is X.
> State Y is entered if X receives event y1.
> State Z is entered if X receives event z1.
> X is entered if Y receives event y2.
> Y is entered if Z receives event z2.
>
> If Y is entered then it executes a function which will generate event
> y2 during ist processing (function will be executed in another thread
> - thread passes event y2 to state machine).
> It is possible that event z1 is passed to the state machine before
> event y2.
>
> How can I delay processing of event z1 until y2 event handling has
> taken place?

How about adding a z1 deferral reaction to Y, see 
<http://www.boost-consulting.com/boost/libs/statechart/doc/tutorial.html#DeferringEvents>?

Regards,

-- 
Andreas Huber
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