From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sage Weil <sweil@redhat.com>
Subject: Re: Ask help for boost::statechart in PG
Date: Sat, 30 Aug 2014 09:14:52 -0700 (PDT)
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To: star fan <jfanix@gmail.com>
Cc: Ceph-devel <ceph-devel@vger.kernel.org>, Loic Dachary <loic@dachary.org>

On Sat, 30 Aug 2014, star fan wrote:
> I ask the question because I am not good at  boost::statechart and I
> can't get answer from other way.
> 
> To help me to good understand the PG statechart, I hope someone answer
> below questions:
> In Initial state,
> 1.  why there is not react function for custom_reaction< NullEvt >
> 2. why there is not custom_reaction definition about
> boost::statechart::result react(const MNotifyRec&);

One thing to keep in mind is that the states form a hierarchy.  If a state 
doesn't explicitly handle/react to an event, the parent will.  You'll 
notice that Reset and Started both react to NullEvt, and the other states 
are substates/children of those.

sage