Re: [boost] Proposal to add a Boost.FSM library

From: Alexander Nasonov (alnsn_at_[hidden])
Date: 2006-12-19 15:41:09

Andrey Semashev wrote:
> ROM friendly? What is it?

This means in particular that the transition table should be initialized
at static phase of static initialization so that a compiler can store it
in read-only memory. I know it's very important in embedded environment
where fsm are often used, to store as much as possible in read-only
memory.

> > 4. Make sure it may scale beyond default mpl::vector capacity.
> 
> You may use any MPL sequence when expressing states and transition
> rules, including mpl::list which is far less limited. But speaking
> frankly, I think a compiler may die even before mpl::vector limit is
> reached.

I remember I compiled the "unique" metafunction for a list of more than
400 transitions. I thought about spliting my global transition table to
several smaller tables (for example, each table would represent all
transitions from given state) and instantiate each table in separate
translation units.

-- 
Alexander Nasonov
http://nasonov.blogspot.com
Humanity is acquiring all the right technology for all the wrong
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